RF Micro Devices Inc.

7628 Thorndike Road, Greensboro, NC 27409-9421

DS141203

For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.

The information in this publication is believed to be accurate. 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

application circuitry and specifications at any time without prior notice.

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RFSA3714

Pin Names and Descriptions

Pin

Name

Description

1

C0.25

0.25dB Parallel Control Bit

2

VDD

Supply Voltage

3

PBAR/S

Mode Select Pin

Logic Low = Parallel

Logic High = Serial

4

GND

Ground Pin

5

RFIN

RF Input Pin, Incident RF power must enter this pin for rated thermal performance and reliability. Do not apply

DC power to this pin. Pin may be DC grounded externally and is grounded thru resistors internal to the part.

6

GND

Ground Pin

7

GND

Ground Pin

8

GND

Ground Pin

9

GND

Ground Pin

10

GND

Ground Pin

11

GND

Ground Pin

12

GND

Ground Pin

13

GND

Ground Pin

14

RFOUT

RF Output Pin; Do not apply DC power to this pin. Pin may be DC grounded externally and is grounded thru

resistors internal to the part.

15

GND

Ground Pin

16

LE

Latch Enable, The leading edge of signal on LE causes the attenuator to change setting for serial and latched

parallel modes. For direct parallel mode keep LE at a logic high level.

17

CLK

Serial Clock Input

18

SI

Serial Data Input

19

C16

16dB Parallel Control Bit

20

C8

8dB Parallel Control Bit

21

C4

4dB Parallel Control Bit

22

C2

2dB Parallel Control Bit

23

C1

1dB Parallel Control Bit

24

C0.5

0.5dB Parallel Control Bit