RFSA2714 - mouser.com

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Functional Block Diagram

RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2012, RF Micro Devices, Inc.

Product Description

7628 Thorndike Road, Greensboro, NC 21127409-9421 · For sales or techni-cal support, contact RFMD at ((+1) 336-678-5570 or ccustomerser-

Ordering Information

1

2

3

4

5

6

18

17

16

15

14

13

7 8 9 10 11 12

24 23 22 21 20 19

7 Bit DSA

Logic Circuit

C0.25

VDD

N/C

RF1

N/C

N/C

N/C

N/C

N/C

RF2

N/C

N/C

ACG1

ACG2

ACG3

ACG4

ACG5

N/C

C0.5

C1

C2

C4

C8

C16

RFSA2714Parallel Controlled Digital Step Attenuator,

50MHz to 4000MHz

RFMD's RFSA2714 is a 7-bit digital step attenuator (DSA) that features high linearityover the entire 31.75dB gain control range with excellent step accuracy in 0.25dBsteps. The parallel-controlled RFSA2714 has an on-chip decoder that is both 3V and5V compatible. The RFSA2714 also offers a rugged Class 1B HBM ESD rating viaon-chip ESD circuitry.

Features� Frequency Range 50MHz to

4000MHz

� 7-Bit, 31.75dB Range, 0.25dB Step

� High Linearity, IP3 >50dBm

� 3V and 5V Logic Compatible

� On-chip Parallel Decoder

� Parallel Programming Interface

� On-chip ESD Protection >500V HBM

� Single Supply, 3V to 5V Operation

Applications� Transceiver IF Applications

� Cellular, PCS, GSM, UMTS, LTE,

� WiMax/WiFi

� Wireless Data, Satellite Terminals

� Test Equipment

DS130211

Package: QFN, 24-Pin, 4.2mm x 4.2mm

RFSA2714Par-allel Controlled Digital Step Attenuator, 50MHz to 4000MHz

RFSA2714SR 7” Sample reel with 100 piecesRFSA2714SQ Sample bag with 25 piecesRFSA2714TR13 13” Reel with 2500 piecesRFSA2714PCK-410 50MHz to 4GHz PCBA with 5-piece sample bag

2 of 9

RFSA2714

DS1302117628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at ((+1) 336-678-5570 or [email protected].

Absolute Maximum Ratings

Parameter Rating UnitSupply Voltage +5.5 V

DC Supply Current 15 mA

Power Dissipation 83 mW

Max RF Input Power 27 dBm

Operating Temperature (TCASE) -40 to +85 °C

Storage Temperature -40 to +150 °C

Junction Temperature 150 °C

ESD Rating (HBM) Class 1B

Moisture Sensitivity Level MSL1

ParameterSpecification

Unit ConditionMin. Typ. Max.

Frequency Range 50 4000 MHz

Insertion Loss 0.85 dB 150MHz, 0dB attenuation

1.1 dB 850MHz, 0dB attenuation

1.7 dB 2700MHz, 0dB attenuation

2.1 dB 3800MHz, 0dB attenuation

Gain Control Range 31.75 dB 0.25dB step size

Step Accuracy ±(0.1 + 5% attenuation setting) dB

Input IP3 50 dBm 100MHz to 4000MHz

Input P0.1dB 25 dBm 1000MHz

Return Loss 15 dB DC to 3000MHz, all states

Control Interface 7-bit, Parallel Parallel Interface

Settling Time 200 ns tRISE, tFALL (10%/90% RF)

Switching Speed 200 ns tON, tOFF (50% CTL to 10%/90% RF)

Supply Voltage (VDD) 4.75 5.0 5.25 V

Supply Current 7.5 mA

Control Voltage (VCTL) Low, VCTL = 0 to 0.8High, VCTL = 2.0 to VDD

V

Notes:1. VDD = 5V, VCTL= 5V, T = 25°C.2. Broadband Application Circuit (with ACG caps).3. IIP3 measured with PIN = +10dBm/tone, 1MHz spacing.

Caution! ESD sensitive device.Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical perfor-mance or functional operation of the device under Absolute Maximum Rating condi-tions is not implied.

The information in this publication is believed to be accurate and reliable. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended appli-cation circuitry and specifications at any time without prior notice.

3 of 9

RFSA2714

DS1302117628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at ((+1) 336-678-5570 or [email protected].

Typical Performance: Broadband Application Circuit (25°C)

4 of 9

RFSA2714

DS1302117628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at ((+1) 336-678-5570 or [email protected].

Typical Performance: Broadband Application Circuit (25°C)

5 of 9

RFSA2714

DS1302117628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at ((+1) 336-678-5570 or [email protected].

Truth Table

Control Bit Relative Gain SettingC16 C8 C4 C2 C1 C0.5 C0.25

1 1 1 1 1 1 1 Max gain

1 1 1 1 1 1 0 -0.25dB

1 1 1 1 1 0 1 -0.5dB

1 1 1 1 0 1 1 -1dB

1 1 1 0 1 1 1 -2dB

1 1 0 1 1 1 1 -4dB

1 0 1 1 1 1 1 -8dB

0 1 1 1 1 1 1 -16dB

0 0 0 0 0 0 0 -31.75dB

Note: C0.25 = D0, C0.5 = D1, …, C16 = D6 (for the purpose of the example below)

Logic Voltage LevelsState Logic

Low 0V to 0.8V

High 2.0V to 5.0V

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RFSA2714

DS1302117628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at ((+1) 336-678-5570 or [email protected].

Pin Names and DescriptionPin Name Description1 C0.25 0.25dB Control Bit.

2 VDD Power Supply.

3 NC No Internal Connection. EVB can be ground or no connect.

4 RF1 RF Port. External DC Block Required.

5 NC No Internal Connection. EVB can be ground or no connect.

6 NC No Internal Connection. EVB can be ground or no connect.

7 ACG AC Ground Connection for Operation below 500MHz.

8 ACG AC Ground Connection for Operation below 500MHz.

9 ACG AC Ground Connection for Operation below 500MHz.

10 ACG AC Ground Connection for Operation below 500MHz.

11 ACG AC Ground Connection for Operation below 500MHz.

12 NC No Internal Connection. EVB can be ground or no connect.

13 NC No Internal Connection. EVB can be ground or no connect.

14 NC No Internal Connection. EVB can be ground or no connect.

15 RF2 RF Port. External DC Block Required.

16 NC No Internal Connection. EVB can be ground or no connect.

17 NC No Internal Connection. EVB can be ground or no connect.

18 NC No Internal Connection. EVB can be ground or no connect.

19 C16 16dB Control Bit.

20 C8 8dB Control Bit.

21 C4 4dB Control Bit.

22 C2 2dB Control Bit.

23 C1 1dB Control Bit.

24 C0.5 0.5dB Control Bit.

EPAD GND DC and RF Ground. Must be soldered to EVB ground plane over a bed of vias for thermal and RF performance.

7 of 9

RFSA2714

DS1302117628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at ((+1) 336-678-5570 or [email protected].

Evaluation Board Assembly Drawing

Board Edge

Trace width should be 17.25mils

Board Edge

Trace width should be 17.25mils

Board Edge

Trace width should be 17.25mils

Trace width should be 17.25mils

Board Edge

C025

SA2714410(A)

VDD

GND

C05/DATA C1

C2/LE

C4/CLK

C8/PUP

C16

C025

C4/CLK C1

C05/DATA

GND

C8/PUP

C16

C2/LE

J1RF1

J100J99

C20C19

R8

C11

J2RF2

C1C2C3C4C5C6C7

C9

C12C13

C14

C15

C16

U1

C17

C18R1

R2

R3

R4

R5

R6R7

C8

P2

P1

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RFSA2714

DS1302117628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at ((+1) 336-678-5570 or [email protected].

Evaluation Board Schematic

Evaluation Board Bill of Materials (BOM)Description Reference Designator Manufacturer Manufacturer’s P/N

SA2714410(A) Dynamic Details (DDI) Toronto SA2714410(A)

Digital Step Attenuator 50MHz to 4000MHz U1 RFMD RFSA2714SB

CAP, 1000pF, 10%, 50V, X7R, 0402 C7 Taiyo Yuden (USA), Inc. RM UMK105BJ102KV-F

CAP, 470pF, 10%, 50V, X7R, 0402 C11-C12 Murata Electronics GRM155R71H471KA01E

CAP, 680pF, 5%, 50V, C0G, 0402 C14, C15, C16 Murata Electronics GRM1555C1H681JA01D

RES, 0�, 0402 R1-R8 Kamaya, Inc RMC1/16SJPTH

CONN, SMA, END LNCH, UNIV, HYB MNT, FLT J1-J2, J99-J100 Molex SD-73251-4000

CONN, HDR, ST, PLRZD, 9-PIN P1 ITW Pancon MPSS100-9-C

CONN, SKT, 24-PIN DIP, .600", T/H P2 Aries Electronics Inc. 24-6518-10

MOD, USB TO SERIAL UART, SSOP-28 M1 (See Note Below) Future Technology Devices Int'l UM232R

DNP C1-C6, C8-C9, C13, C17-C20 NA NA

Note: M1 should be mounted into P2 with respect to the Pin 1 alignment of M1 and P2

C0.251

VDD2

GND/NC3

RF14

GND/NC5

NC6

GND/NC

7

GND/NC

8

GND/NC

9

GND/NC

10

GND/NC

11

GND/NC

12

NC 13

GND/NC 14

RF2 15

GND/NC 16

GND/NC 17

GND/NC 18

C16

19

C8

20

C4

21

C2

22

C1

23

C0.5

24U1

C7

C6

C5

C4 C3

C2

C1

GND

GND

GND

GND GND

GND

GND

C05/DATA C05/DATA

C1

C1

C2/LE

C2/LE

C4/CLK

C4/CLK

C8/PUP

C8/PUP

C16

C16

VDD

VDDGND

C13

GND

C15

GND

C16

GND

C14

GND

GND

GND GND

GND

GND

C11 C12

GND GND

GND GND

C17

GND

C18

GND

C19 C20

C025

C9

GND

C025

R3

R2

R1

R4

R6

R7

R5

123456789

P1

CON9

R8

C8

GND

1

2

J1RF1 1

2

J2RF2

1

2

J99SMA 1

2

J100SMA

CB212

TXD1

DTR#2

RTS#3

VIO4

RXD5

RI#6

GND7

DSR#8

DCD#9

CTS#10

CB411

GND 24

SLD 13USB 14VCC 15PU2 16PU1 17CB3 183V3 19RST 20VCC 21CB1 22CB0 23

P2

UM232R

C025

C4/CLK

C1

C05/DATA

GND

C8/PUP

C16

C2/LE

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RFSA2714

DS1302117628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at ((+1) 336-678-5570 or [email protected].

Branding Drawing

Package Drawing

SA2714 YYWW Trace

Pin 1 Indicator

Fill in the YYWW Notation with the Date Code

YY = Year

WW = Week

Trace to be assigned by SubCon

4.0004.000

4.0004.000

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Authorized Distributor

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