HTP-8230 SERVICE MANUAL SERVICE MANUAL 5.1-CH HOME THEATER SPEAKER PACKAGE Silver model MODEL HTP-8230(S) 120 V AC, 60Hz SMDD Ref. No. 3815 082004 Front Speakers (L / R) "SKF-8230F" Center Speaker "SKC-8230C" Surround Speakers (L / R) "SKM-8230S" Powered Subwoofer "SKW-8230" SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.
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HTP-8230
SERVICE MANUALSERVICE MANUAL
5.1-CH HOME THEATER SPEAKER PACKAGE
Silver model
MODEL HTP-8230(S)
120 V AC, 60HzSMDD
Ref. No. 3815082004
Front Speakers (L / R)"SKF-8230F"
Center Speaker"SKC-8230C"
Surround Speakers (L / R)"SKM-8230S"
Powered Subwoofer"SKW-8230"
SAFETY-RELATED COMPONENT WARNING!!COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
HTP-8230
SPECIFICATIONS
Type :Input sensitivity / impedance :Maximum output power :Frequency response :Cabinet capacity :Dimensions (W x H x D) :
Weight :Speaker unit :Power supply :Power consumption :Other :
Powered Bass-reflex
220 mV / 15 k ohm
100 W (Dynamic Power)
35 Hz - 150 Hz
0.91 cubic feet (26 Litter)
9-1/16 x 17-13/16 x 15-7/8
inch
(230 x 436 x 404 mm)
24.7 lbs. (11.2 kg)
8 inch Cone
AC 120 V, 60 Hz
75 W
Auto Standby function
Front Speaker (SKF-8230F)
Type :Impedance :Maximum input power :Output sound pressure level :Frequency response :Crossover frequency :Cabinet capacity :Dimensions (W x H x D) :
Weight :Speaker unit : Woofer : Tweeter :Terminal :Other :
2 Way Bass-reflex
8 ohm
100 W
76 dB/W/m
70 Hz - 50 kHz
4.5 kHz
0.035 cubic feet (1.0 Litter)
4 x 6-5/8 x 4-15/16 inch
(101 x 169 x 126 mm)
2.6 lbs. (1.2 kg)
3-1/8 inch Cone
1 inch Balanced Dome
Spring type Color coded
Magnetic shielding
Type :Impedance :Maximum input power :Output sound pressure level :Frequency response :Crossover frequency :Cabinet capacity :Dimensions (W x H x D) :
Weight :Speaker unit : Woofer TweeterTerminal :Other :
2 Way Bass-reflex
8 ohm
100 W
78 dB/W/m
70 Hz - 50 kHz
4.5 kHz
0.057 cubic feet (1.6 Litter)
10-3/8 x 4 x 4-15/16 inch
(264 x 101 x 126 mm)
4.4 lbs. (2.0 kg)
3-1/8" inch Cone x 2
1 inch Balanced Dome
Spring type Color coded
Magnetic shielding
Surround Speaker (SKM-8230S)
Type :Impedance :Maximum input power :Output sound pressure level :Frequency response :Crossover frequency :Cabinet capacity :Dimensions (W x H x D) :
Weight :Speaker unit : Woofer : Tweeter :Terminal :
2 Way Bass-reflex
8 ohm
100 W
79 dB/W/m
70 Hz - 30 kHz
10 kHz
0.035 cubic feet (1.0 Litter)
4 x 6-5/8 x 4-15/16 inch
(101 x 169 x 126 mm)
1.8 lbs. (0.8 kg)
3-1/8 inch Cone Woofer
3/4 inch Ceramic Tweeter
Spring type Color coded
Specifications and appearance are subject to change
without prior notice.
Powered Subwoofer (SKW-8230) Center Speaker (SKC-8230C)
HTP-8230
EXPLODED VIEWS-1SKW-8230 : POWERED SUBWOOFER
HT
P-8230
A02
SP06x 10 pcs.
A05 x 4 pcs.
A04F903
A03
U02
U03
F902
A01
U01
<Note>IC501---> Refer to "PRINTED CIRCUIT BOARD PARTS LIST"
Refer to "EXPLODED VIEWS-2"
HTP-8230
EXPLODED VIEWS-2SKW-8230 : POWERED SUBWOOFER
HT
P-8230
SP06x 8 pcs.
SP08
SP04
SP01
SP03
SP05x 8 pcs.
SP02x 4 pcs.
HTP-8230H
TP
-8230
EXPLODED VIEWS-3SKF-8230F / SKC-8230C / SKM-8230S
SP13
SP10 SP12
SP17 SP19
SP16 SP18
SP14
SP15
SP11
"SKF-8230F (L)" "SKF-8230F (R)""SKC-8230C"
"SKM-8230S (R)""SKM-8230S (L)"
TERMINAL :
White / Black
TERMINAL :
Red / Black
TERMINAL :
Green / Black
TERMINAL :
Blue / Black
TERMINAL :
Gray / Black
NOT MAGNETICALLY SHIELDED NOT MAGNETICALLY SHIELDED
HTP-8230
BLOCK DIAGRAMSKW-8230 : POWERED SUBWOOFER
HT
P-8230
HTP-8230
SCHEMATIC DIAGRAMSKW-8230 : POWERED SUBWOOFER
HTP-8230A
1
2
3
4
5
B C D E F G H
LINEINPUT
OUTPUTLEVEL
AC 120V / 60Hz
SPEAKER
INPUT PC BOARDU02 MAIN PC BOARDU01VR / LED PC BOARDU03
LEDRED : STANDBYGREEN : ON
HTP-8230
SCHEMATIC DIAGRAMSKW-8230 : POWERED SUBWOOFER
HTP-8230A
1
2
3
4
5
B C D E F G H
LINEINPUT
OUTPUTLEVEL
AC 120V / 60Hz
SPEAKER
INPUT PC BOARDU02 MAIN PC BOARDU01VR / LED PC BOARDU03
LEDRED : STANDBYGREEN : ON
HTP-8230
SCHEMATIC DIAGRAMSKW-8230 : POWERED SUBWOOFER
A
1
2
3
4
5
B C D E F G H
LINEINPUT
OUTPUTLEVEL
AC 120V / 60Hz
SPEAKER
INPUT PC BOARDU02 MAIN PC BOARDU01VR / LED PC BOARDU03
LEDRED : STANDBYGREEN : ON
HTP-8230
PC BOARD CONNECTION DIAGRAMSKW-8230 : POWERED SUBWOOFER
No PC board viewLook over the actual PC board on hand
TDA7293
120V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY
VERY HIGH OPERATING VOLTAGE RANGE(±50V)DMOS POWER STAGEHIGH OUTPUT POWER (100W @ THD =10%, RL = 8Ω, VS = ±40V)MUTING/STAND-BY FUNCTIONSNO SWITCH ON/OFF NOISEVERY LOW DISTORTIONVERY LOW NOISESHORT CIRCUIT PROTECTED (WITH NO IN-PUT SIGNAL APPLIED)THERMAL SHUTDOWNCLIP DETECTORMODULARITY (MORE DEVICES CAN BEEASILY CONNECTED IN PARALLEL TODRIVE VERY LOW IMPEDANCES)
DESCRIPTIONThe TDA7293 is a monolithic integrated circuit inMultiwatt15 package, intended for use as audioclass AB amplifier in Hi-Fi field applications(Home Stereo, self powered loudspeakers, Top-
class TV). Thanks to the wide voltage range andto the high out current capability it is able to sup-ply the highest power into both 4Ω and 8Ω loads.The built in muting function with turn on delaysimplifies the remote operation avoiding switchingon-off noises.Parallel mode is made possible by connectingmore device through of pin11. High output powercan be delivered to very low impedance loads, sooptimizing the thermal dissipation of the system.
January 2003
®
IN- 2R2
680Ω
C222µF
C1 470nFIN+
R1 22K
3
R3 22K
-
+
MUTE
STBY
4
VMUTE
VSTBY
10
9
SGND
MUTE
STBY
R4 22K
THERMALSHUTDOWN
S/CPROTECTION
R5 10K
C3 10µF C4 10µF
1
STBY-GND
C522µF
7 13
14
6
158
-Vs -PWVs
BOOTSTRAP
OUT
+PWVs+Vs
C9 100nF C8 1000µF
-VsD97AU805A
+VsC7 100nF C6 1000µF
BUFFER DRIVER
11
BOOTLOADER12
5VCLIP
CLIP DET
(*)
(*) see Application note(**) for SLAVE function
(**)
Figure 1: Typical Application and Test Circuit
Multiwatt15V Multiwatt15HORDERING NUMBERS:
TDA7293V TDA7293HS
MULTIPOWER BCD TECHNOLOGY
1/15
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VS Supply Voltage (No Signal) ±60 V
V1 VSTAND-BY GND Voltage Referred to -VS (pin 8) 90 V
V2 Input Voltage (inverting) Referred to -VS 90 V
V2 - V3 Maximum Differential Inputs ±30 V
V3 Input Voltage (non inverting) Referred to -VS 90 V
V4 Signal GND Voltage Referred to -VS 90 V
V5 Clip Detector Voltage Referred to -VS 120 V
V6 Bootstrap Voltage Referred to -VS 120 V
V9 Stand-by Voltage Referred to -VS 120 V
V10 Mute Voltage Referred to -VS 120 V
V11 Buffer Voltage Referred to -VS 120 V
V12 Bootstrap Loader Voltage Referred to -VS 100 V
IO Output Peak Current 10 A
Ptot Power Dissipation Tcase = 70°C 50 W
Top Operating Ambient Temperature Range 0 to 70 °CTstg, Tj Storage and Junction Temperature 150 °C
APPLICATION SUGGESTIONS (see Test and Application Circuits of the Fig. 1)The recommended values of the external components are those shown on the application circuit of Fig-ure 1. Different values can be used; the following table can help the designer.
COMPONENTS SUGGESTED VALUE PURPOSE LARGER THANSUGGESTED
C5 22µFXN (***) BOOTSTRAPPING SIGNALDEGRADATION ATLOW FREQUENCY
C6, C8 1000µF SUPPLY VOLTAGEBYPASS
C7, C9 0.1µF SUPPLY VOLTAGEBYPASS
DANGER OFOSCILLATION
(*) R1 = R3 for pop optimization
(**) Closed Loop Gain has to be ≥ 26dB
(***) Multiplay this value for the number of modular part connected
MASTER
UNDEFINED
SLAVE
-VS +3V
-VS +1V
-VSD98AU821
Slave function: pin 4 (Ref to pin 8 -V S) Note:If in the application, the speakers are connectedvia long wires, it is a good rule to add betweenthe output and GND, a Boucherot Cell, in order toavoid dangerous spurious oscillations when thespeakers terminal are shorted.The suggested Boucherot Resistor is 3.9Ω/2Wand the capacitor is 1µF.
TDA7293
5/15
INTRODUCTIONIn consumer electronics, an increasing demandhas arisen for very high power monolithic audioamplifiers able to match, with a low cost, the per-formance obtained from the best discrete de-signs.The task of realizing this linear integrated circuitin conventional bipolar technology is made ex-tremely difficult by the occurence of 2nd break-down phoenomenon. It limits the safe operatingarea (SOA) of the power devices, and, as a con-sequence, the maximum attainable output power,especially in presence of highly reactive loads.Moreover, full exploitation of the SOA translatesinto a substantial increase in circuit and layoutcomplexity due to the need of sophisticated pro-tection circuits.To overcome these substantial drawbacks, theuse of power MOS devices, which are immunefrom secondary breakdown is highly desirable. The device described has therefore been devel-oped in a mixed bipolar-MOS high voltage tech-nology called BCDII 100/120.
1) Output StageThe main design task in developping a power op-erational amplifier, independently of the technol-ogy used, is that of realization of the output stage.The solution shown as a principle shematic byFig3 represents the DMOS unity - gain outputbuffer of the TDA7293.This large-signal, high-power buffer must be ca-pable of handling extremely high current and volt-age levels while maintaining acceptably low har-monic distortion and good behaviour over
frequency response; moreover, an accurate con-trol of quiescent current is required.A local linearizing feedback, provided by differen-tial amplifier A, is used to fullfil the above require-ments, allowing a simple and effective quiescentcurrent setting.Proper biasing of the power output transistorsalone is however not enough to guarantee the ab-sence of crossover distortion.While a linearization of the DC transfer charac-teristic of the stage is obtained, the dynamic be-haviour of the system must be taken into account.A significant aid in keeping the distortion contrib-uted by the final stage as low as possible is pro-vided by the compensation scheme, which ex-ploits the direct connection of the Miller capacitorat the amplifier’s output to introduce a local ACfeedback path enclosing the output stage itself.
2) ProtectionsIn designing a power IC, particular attention mustbe reserved to the circuits devoted to protectionof the device from short circuit or overload condi-tions. Due to the absence of the 2nd breakdown phe-nomenon, the SOA of the power DMOS transis-tors is delimited only by a maximum dissipationcurve dependent on the duration of the appliedstimulus.In order to fully exploit the capabilities of thepower transistors, the protection scheme imple-mented in this device combines a conventionalSOA protection circuit with a novel local tempera-ture sensing technique which " dynamically" con-trols the maximum dissipation.
Figure 3: Principle Schematic of a DMOS unity-gain buffer.
TDA7293
6/15
In addition to the overload protection describedabove, the device features a thermal shutdowncircuit which initially puts the device into a mutingstate (@ Tj = 150 oC) and then into stand-by (@Tj = 160 oC).Full protection against electrostatic discharges onevery pin is included.
3) Other Features The device is provided with both stand-by and
mute functions, independently driven by twoCMOS logic compatible input pins. The circuits dedicated to the switching on and offof the amplifier have been carefully optimized toavoid any kind of uncontrolled audible transient atthe output.The sequence that we recommend during theON/OFF transients is shown by Figure 4.The application of figure 5 shows the possibility ofusing only one command for both st-by and mutefunctions. On both the pins, the maximum appli-cable range corresponds to the operating supplyvoltage.
APPLICATION INFORMATIONHIGH-EFFICIENCYConstraints of implementing high power solutionsare the power dissipation and the size of thepower supply. These are both due to the low effi-ciency of conventional AB class amplifier ap-proaches.Here below (figure 6) is described a circuit pro-posal for a high efficiency amplifier which can beadopted for both HI-FI and CAR-RADIO applica-tions.
1N4148
10K 30K
20K
10µF10µF
MUTE STBY
D93AU014
MUTE/ST-BY
Figure 5: Single Signal ST-BY/MUTE ControlCircuit
PLAY
OFF
ST-BY
MUTE MUTE
ST-BY OFF
D98AU817
5V
5V
+Vs(V)
+40
-40
VMUTEPIN #10
(V)
VST-BYPIN #9
(V)
-VsVIN(mV)
IQ(mA)
VOUT(V)
Figure 4: Turn ON/OFF Suggested Sequence
TDA7293
7/15
The TDA7293 is a monolithic MOS power ampli-fier which can be operated at 100V supply voltage(120V with no signal applied) while delivering out-put currents up to ±6.5 A.This allows the use of this device as a very highpower amplifier (up to 180W as peak power withT.H.D.=10 % and Rl = 4 Ohm); the only drawbackis the power dissipation, hardly manageable inthe above power range.The typical junction-to-case thermal resistance ofthe TDA7293 is 1 oC/W (max= 1.5 oC/W). Toavoid that, in worst case conditions, the chip tem-perature exceedes 150 oC, the thermal resistanceof the heatsink must be 0.038 oC/W (@ max am-bient temperature of 50 oC).As the above value is pratically unreachable; ahigh efficiency system is needed in those caseswhere the continuous RMS output power is higherthan 50-60 W.The TDA7293 was designed to work also inhigher efficiency way.For this reason there are four power supply pins:two intended for the signal part and two for thepower part.T1 and T2 are two power transistors that onlyoperate when the output power reaches a certainthreshold (e.g. 20 W). If the output power in-creases, these transistors are switched on duringthe portion of the signal where more output volt-age swing is needed, thus "bootstrapping" thepower supply pins (#13 and #15).The current generators formed by T4, T7, zenerdiodes Z1, Z2 and resistors R7,R8 define theminimum drop across the power MOS transistorsof the TDA7293. L1, L2, L3 and the snubbers C9,R1 and C10, R2 stabilize the loops formed by the"bootstrap" circuits and the output stage of theTDA7293.By considering again a maximum averageoutput power (music signal) of 20W, in caseof the high efficiency application, the thermalresistance value needed from the heatsink is2.2oC/W (Vs =±50 V and Rl= 8 Ohm).All components (TDA7293 and power transis-tors T1 and T2) can be placed on a 1.5oC/Wheatsink, with the power darlingtons electricallyinsulated from the heatsink.Since the total power dissipation is less than thatof a usual class AB amplifier, additional cost sav-ings can be obtained while optimizing the powersupply, even with a high heatsink .
BRIDGE APPLICATIONAnother application suggestion is the BRIDGEconfiguration, where two TDA7293 are used.In this application, the value of the load must notbe lower than 8 Ohm for dissipation and currentcapability reasons.A suitable field of application includes HI-FI/TVsubwoofers realizations.
The main advantages offered by this solution are:- High power performances with limited supply voltage level.- Considerably high output power even with high load values (i.e. 16 Ohm).With Rl= 8 Ohm, Vs = ±25V the maximum outputpower obtainable is 150 W, while with Rl=16Ohm, Vs = ±40V the maximum Pout is 200 W.
APPLICATION NOTE: (ref. fig. 7)
Modular Application (more Devices in Parallel)The use of the modular application lets very highpower be delivered to very low impedance loads.The modular application implies one device to actas a master and the others as slaves.The slave power stages are driven by the masterdevice and work in parallel all together, while the in-put and the gain stages of the slave device are dis-abled, the figure below shows the connections re-quired to configure two devices to work together.
The master chip connections are the same asthe normal single ones.The outputs can be connected together with-out the need of any ballast resistance.The slave SGND pin must be tied to the nega-tive supply.The slave ST-BY and MUTE pins must be con-nected to the master ST-BY and MUTE pins.The bootstrap lines must be connected to-gether and the bootstrap capacitor must be in-creased: for N devices the boostrap capacitormust be 22µF times N.The slave IN-pin must be connected to thenegative supply.
THE BOOTSTRAP CAPACITORFor compatibility purpose with the previous de-vices of the family, the boostrap capacitor can beconnected both between the bootstrap pin (6) andthe output pin (14) or between the boostrap pin(6) and the bootstrap loader pin (12).When the bootcap is connected between pin 6and 14, the maximum supply voltage in presenceof output signal is limited to 100V, due the boot-strap capacitor overvoltage.When the bootcap is connected between pins 6and 12 the maximum supply voltage extend to thefull voltage that the technology can stand: 120V.This is accomplished by the clamp introduced atthe bootstrap loader pin (12): this pin follows theoutput voltage up to 100V and remains clampedat 100V for higher output voltages. This featurelets the output voltage swing up to a gate-sourcevoltage from the positive supply (VS -3 to 6V).
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequencesof use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license isgranted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication aresubject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics productsare not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
STMicroelectronics GROUP OF COMPANIESAustralia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco -
Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.http://www.st.com
TDA7293
15/15
LM124/LM224/LM324/LM2902Low Power Quad Operational AmplifiersGeneral DescriptionThe LM124 series consists of four independent, high gain,internally frequency compensated operational amplifierswhich were designed specifically to operate from a singlepower supply over a wide range of voltages. Operation fromsplit power supplies is also possible and the low power sup-ply current drain is independent of the magnitude of thepower supply voltage.
Application areas include transducer amplifiers, DC gainblocks and all the conventional op amp circuits which nowcan be more easily implemented in single power supply sys-tems. For example, the LM124 series can be directly oper-ated off of the standard +5V power supply voltage which isused in digital systems and will easily provide the requiredinterface electronics without requiring the additional ±15Vpower supplies.
Unique Characteristicsn In the linear mode the input common-mode voltage
range includes ground and the output voltage can alsoswing to ground, even though operated from only asingle power supply voltage
n The unity gain cross frequency is temperaturecompensated
n The input bias current is also temperature compensated
Advantagesn Eliminates need for dual suppliesn Four internally compensated op amps in a single
packagen Allows directly sensing near GND and VOUT also goes
to GNDn Compatible with all forms of logicn Power drain suitable for battery operation
Featuresn Internally frequency compensated for unity gainn Large DC voltage gain 100 dBn Wide bandwidth (unity gain) 1 MHz
(temperature compensated)n Wide power supply range:
Single supply 3V to 32Vor dual supplies ±1.5V to ±16V
n Very low supply current drain (700 µA) — essentiallyindependent of supply voltage
n Low input biasing current 45 nA(temperature compensated)
n Low input offset voltage 2 mVand offset current: 5 nA
n Input common-mode voltage range includes groundn Differential input voltage range equal to the power
supply voltagen Large output voltage swing 0V to V+ − 1.5V
Connection Diagram
Note 1: LM124A available per JM38510/11006
Note 2: LM124 available per JM38510/11005
Dual-In-Line Package
DS009299-1
Top ViewOrder Number LM124J, LM124AJ, LM124J/883 (Note 2), LM124AJ/883 (Note 1), LM224J,
LM224AJ, LM324J, LM324M, LM324MX, LM324AM, LM324AMX, LM2902M, LM2902MX, LM324N, LM324AN,LM324MT, LM324MTX or LM2902N LM124AJRQML and LM124AJRQMLV (Note 3)
Note 3: See STD Mil DWG 5962R99504 for Radiation Tolerant Device
Schematic Diagram (Each Amplifier)
DS009299-33
Order Number LM124AW/883, LM124AWG/883, LM124W/883 or LM124WG/883LM124AWRQML and LM124AWRQMLV (Note 3)
See NS Package Number W14BLM124AWGRQML and LM124AWGRQMLV (Note 3)
See NS Package Number WG14A
DS009299-2
LM12
4/LM
224/
LM32
4/LM
2902
www.national.com 2
Absolute Maximum Ratings (Note 12)
If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distributors for availability and specifications.
LM124/LM224/LM324 LM2902
LM124A/LM224A/LM324A
Supply Voltage, V+ 32V 26V
Differential Input Voltage 32V 26V
Input Voltage −0.3V to +32V −0.3V to +26V
Input Current
(VIN < −0.3V) (Note 6) 50 mA 50 mA
Power Dissipation (Note 4)
Molded DIP 1130 mW 1130 mW
Cavity DIP 1260 mW 1260 mW
Small Outline Package 800 mW 800 mW
Output Short-Circuit to GND
(One Amplifier) (Note 5)
V+ ≤ 15V and TA = 25˚C Continuous Continuous
Operating Temperature Range −40˚C to +85˚C
LM324/LM324A 0˚C to +70˚C
LM224/LM224A −25˚C to +85˚C
LM124/LM124A −55˚C to +125˚C
Storage Temperature Range −65˚C to +150˚C −65˚C to +150˚C
Lead Temperature (Soldering, 10 seconds) 260˚C 260˚C
Soldering Information
Dual-In-Line Package
Soldering (10 seconds) 260˚C 260˚C
Small Outline Package
Vapor Phase (60 seconds) 215˚C 215˚C
Infrared (15 seconds) 220˚C 220˚C
See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mountdevices.
Output Current Source VO = 2V VIN+ = +1V, 10 20 10 20 10 20
VIN− = 0V,
V+ = 15V mA
Sink VIN− = +1V, 5 8 5 8 5 8
VIN+ = 0V,
V+ = 15V
Note 4: For operating at high temperatures, the LM324/LM324A/LM2902 must be derated based on a +125˚C maximum junction temperature and a thermal resis-tance of 88˚C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient. The LM224/LM224A and LM124/LM124A can be de-rated based on a +150˚C maximum junction temperature. The dissipation is the total of all four amplifiers — use external resistors, where possible, to allow the am-plifier to saturate of to reduce the power which is dissipated in the integrated circuit.
Note 5: Short circuits from the output to V+ can cause excessive heating and eventual destruction. When considering short circuits to ground, the maximum outputcurrent is approximately 40 mA independent of the magnitude of V+. At values of supply voltage in excess of +15V, continuous short-circuits can exceed the powerdissipation ratings and cause eventual destruction. Destructive dissipation can result from simultaneous shorts on all amplifiers.
Note 6: This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP tran-sistors becoming forward biased and thereby acting as input diode clamps. In addition to this diode action, there is also lateral NPN parasitic transistor action on theIC chip. This transistor action can cause the output voltages of the op amps to go to the V+voltage level (or to ground for a large overdrive) for the time duration thatan input is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which was negative, again returns to a valuegreater than −0.3V (at 25˚C).
Note 7: These specifications are limited to −55˚C ≤ TA ≤ +125˚C for the LM124/LM124A. With the LM224/LM224A, all temperature specifications are limited to −25˚C≤ TA ≤ +85˚C, the LM324/LM324A temperature specifications are limited to 0˚C ≤ TA ≤ +70˚C, and the LM2902 specifications are limited to −40˚C ≤ TA ≤ +85˚C.
Note 8: VO . 1.4V, RS = 0Ω with V+ from 5V to 30V; and over the full input common-mode range (0V to V+ − 1.5V) for LM2902, V+ from 5V to 26V.
Note 9: The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output sono loading change exists on the input lines.
Note 10: The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V (at 25˚C). The upper end of thecommon-mode voltage range is V+ − 1.5V (at 25˚C), but either or both inputs can go to +32V without damage (+26V for LM2902), independent of the magnitude ofV+.
Note 11: Due to proximity of external components, insure that coupling is not originating via stray capacitance between these external parts. This typically can bedetected as this type of capacitance increases at higher frequencies.
Note 12: Refer to RETS124AX for LM124A military specifications and refer to RETS124X for LM124 military specifications.
Note 13: Human body model, 1.5 kΩ in series with 100 pF.
LM124/LM
224/LM324/LM
2902
www.national.com5
Typical Performance Characteristics
Input Voltage Range
DS009299-34
Input Current
DS009299-35
Supply Current
DS009299-36
Voltage Gain
DS009299-37
Open Loop FrequencyResponse
DS009299-38
Common Mode RejectionRatio
DS009299-39
LM12
4/LM
224/
LM32
4/LM
2902
www.national.com 6
Typical Performance Characteristics (Continued)
Voltage Follower PulseResponse
DS009299-40
Voltage Follower PulseResponse (Small Signal)
DS009299-41
Large Signal FrequencyResponse
DS009299-42
Output CharacteristicsCurrent Sourcing
DS009299-43
Output CharacteristicsCurrent Sinking
DS009299-44
Current Limiting
DS009299-45
LM124/LM
224/LM324/LM
2902
www.national.com7
Typical Performance Characteristics (Continued)
Application HintsThe LM124 series are op amps which operate with only asingle power supply voltage, have true-differential inputs,and remain in the linear mode with an input common-modevoltage of 0 VDC. These amplifiers operate over a wide rangeof power supply voltage with little change in performancecharacteristics. At 25˚C amplifier operation is possible downto a minimum supply voltage of 2.3 VDC.
The pinouts of the package have been designed to simplifyPC board layouts. Inverting inputs are adjacent to outputs forall of the amplifiers and the outputs have also been placed atthe corners of the package (pins 1, 7, 8, and 14).
Precautions should be taken to insure that the power supplyfor the integrated circuit never becomes reversed in polarityor that the unit is not inadvertently installed backwards in atest socket as an unlimited current surge through the result-ing forward diode within the IC could cause fusing of the in-ternal conductors and result in a destroyed unit.
Large differential input voltages can be easily accommo-dated and, as input differential voltage protection diodes arenot needed, no large input currents result from large differen-tial input voltages. The differential input voltage may belarger than V+ without damaging the device. Protectionshould be provided to prevent the input voltages from goingnegative more than −0.3 VDC (at 25˚C). An input clamp diodewith a resistor to the IC input terminal can be used.
To reduce the power supply drain, the amplifiers have aclass A output stage for small signal levels which converts toclass B in a large signal mode. This allows the amplifiers toboth source and sink large output currents. Therefore bothNPN and PNP external current boost transistors can be usedto extend the power capability of the basic amplifiers. Theoutput voltage needs to raise approximately 1 diode dropabove ground to bias the on-chip vertical PNP transistor foroutput current sinking applications.
For ac applications, where the load is capacitively coupled tothe output of the amplifier, a resistor should be used, fromthe output of the amplifier to ground to increase the class Abias current and prevent crossover distortion.
Where the load is directly coupled, as in dc applications,there is no crossover distortion.
Capacitive loads which are applied directly to the output ofthe amplifier reduce the loop stability margin. Values of50 pF can be accommodated using the worst-casenon-inverting unity gain connection. Large closed loop gainsor resistive isolation should be used if larger load capaci-tance must be driven by the amplifier.
The bias network of the LM124 establishes a drain currentwhich is independent of the magnitude of the power supplyvoltage over the range of from 3 VDC to 30 VDC.
Output short circuits either to ground or to the positive powersupply should be of short time duration. Units can be de-stroyed, not as a result of the short circuit current causingmetal fusing, but rather due to the large increase in IC chipdissipation which will cause eventual failure due to exces-sive junction temperatures. Putting direct short-circuits onmore than one amplifier at a time will increase the total ICpower dissipation to destructive levels, if not properly pro-tected with external dissipation limiting resistors in serieswith the output leads of the amplifiers. The larger value ofoutput source current which is available at 25˚C provides alarger output current capability at elevated temperatures(see typical performance characteristics) than a standard ICop amp.
The circuits presented in the section on typical applicationsemphasize operation on only a single power supply voltage.If complementary power supplies are available, all of thestandard op amp circuits can be used. In general, introduc-ing a pseudo-ground (a bias voltage reference of V+/2) willallow operation above and below this value in single powersupply systems. Many application circuits are shown whichtake advantage of the wide input common-mode voltagerange which includes ground. In most cases, input biasing isnot required and input voltages which range to ground caneasily be accommodated.
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORTDEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERALCOUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices orsystems which, (a) are intended for surgical implantinto the body, or (b) support or sustain life, andwhose failure to perform when properly used inaccordance with instructions for use provided in thelabeling, can be reasonably expected to result in asignificant injury to the user.
2. A critical component is any component of a lifesupport device or system whose failure to performcan be reasonably expected to cause the failure ofthe life support device or system, or to affect itssafety or effectiveness.
National SemiconductorCorporationAmericasTel: 1-800-272-9959Fax: 1-800-737-7018Email: [email protected]
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www.national.com
14-Pin TSSOPOrder NumberLM324MT or LM324MTX
NS Package Number MTC14
LM12
4/LM
224/
LM32
4/LM
2902
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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HTP-8230
EXPLODED VIEW PARTS LIST
REF. NO. PART NAME DESCRIPTION Q'TY PART NO. MARKEXPLODED SKW-8230 : POWERED SUBWOOFEREXPLODED SP01 CABINET ASS'Y SKW-8230 1 ANK8S404S-BM10EXPLODED SP02 PLASTIC FOOT D87.5 x D37.5 x H50 HIPS 4 BPE8000040001EXPLODED SP03 STAND BOARD F2905-GW 1 ANF860005-BM10EXPLODED SP04 LOGO PLATE SKW-8230 / ONKYO NAME PLATE 1 BPL800150-0001EXPLODED SP05 WOOD SCREW 8 x 4 x L75 PAN HEAD (FOR FOOT) 8 NST8550514750EXPLODED SP06 WOOD SCREW 4STT+20A (FOR AMPLIFIER / SP) 18 837440204EXPLODED SP08 WOOFER SPEAKER 20cm 4ohm 50W 1 W20178AEXPLODED A01 REAR PANEL "SKW-8230" SPCC 190 x 120 x T2.0mm 1 GSE400175-2006EXPLODED A02 AC CORD LINE CORD 2P 1800mm BLK POLARIZE 1 VPA0040120010 !EXPLODED A03 BUSHING AC LINE BUSHING 1 DBU001002-0011 !EXPLODED A04 POWER TRANSFORMER DC30V, DC2.3A, 120V / 60Hz 100W 1 TTI1120010120 !EXPLODED A05 SCREW M4.0 x P0.7 x L25mm (FOR TRANS) 4 HSD1431033250EXPLODED F902 FUSE 4A / 250V SLOW WALT 1 KSA0204000011 !EXPLODED F903 FUSE 4A / 250V SLOW WALT 1 KSA0204000011 !EXPLODED U01 MAIN PC BOARD ASS'Y MAIN PC BOARD ASS'Y 1 APE4012115001EXPLODED <Note>EXPLODED U01 : MAIN PC BOARD ASS'Y = PCB BRACKET + HEAT SINK + ALL PARTS FOR MAIN PC BOARDEXPLODED U02 INPUT PC BOARD ASS'Y INPUT PC BOARD ASS'Y 1 APE4012125001EXPLODED <Note>EXPLODED U02 : INPUT PC BOARD ASS'Y = INPUT PC BOARD with RCA JACK + CORD ASS'YEXPLODED U03 VR / LED PC BOARD ASS'Y VR / LED PC BOARD ASS'Y 1 APE4012135001EXPLODED <Note>EXPLODED U03 : VR / LED PC BOARD ASS'Y = VR / LED PC BOARD with VR / LED / CORD ASS'Y etc.EXPLODED SKF-8230F : FRONT SPEAKERS (L / R)EXPLODED SP10 COMPLETE UNIT "SKF-8230F (L)" 1 ASL8M404S-BM10EXPLODED SP11 BACK LABEL (L) without serial numbering 1 YLB810006-FL10EXPLODED SP12 COMPLETE UNIT "SKF-8230F (R)" 1 ASL8M404S-BM11EXPLODED SP13 BACK LABEL (R) without serial numbering 1 YLB810006-FR10EXPLODED SKC-8230C : CENTER SPEAKEREXPLODED SP14 COMPLETE UNIT "SKC-8230C" 1 ASL8C404S-BM10EXPLODED SP15 BACK LABEL without serial numbering 1 YLB810006-C010EXPLODED SKM-8230S : SURROUND SPEAKERS (L / R)EXPLODED SP16 COMPLETE UNIT "SKM-8230S (L)" 1 ASL8S404S-BM10EXPLODED SP17 BACK LABEL (L) without serial numbering 1 YLB810006-SL10EXPLODED SP18 COMPLETE UNIT "SKM-8230S (R)" 1 ASL8S404S-BM11EXPLODED SP19 BACK LABEL (R) without serial numbering 1 YLB810006-SR10
NOTE : THE COMPONENTS IDENTIFIED BY THE MARK ! ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE ONLY WITH PART NUMBER SPECIFIED.
2/2 PAGE
HTP-8230
PRINTED CIRCUIT BOARD PARTS LIST
CIRCUIT NO. PART NAME DESCRIPTION Q'TY PART NO. MARKPWB IC501 POWER IC IC 15 PIN TDA7293 1 RHI007293-0001PWB DB901 DIODE RS402L 4A 100V 1 RHD2040100011 !
HTP-8230
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