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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RFSA3613

Pin Names and Descriptions

Pin

Name

Description

1

VDD

Supply Voltage

2

A0

A0 External Address Pin

3

GND

Ground Pin

4

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.

5

GND

Ground Pin

6

GND

Ground Pin

7

GND

Ground Pin

8

GND

Ground Pin

9

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.

10

GND

Ground Pin

11

GND

Ground Pin

12

LE

Latch Enable

The leading edge of signal on LE causes the attenuator to change state

13

CLK

Serial Clock Input

14

SI

Serial data Input

15

A1

A1 External Address Pin

16

A2

A2 External Address Pin

Serial Addressable Mode Attenuation Word Truth Table

Attenuation Word

Attenuation State

D7

D6

D5

D4

D3

D2

D1

(LSB)

D0

X

L

L

L

L

L

L

X

0dB / Reference Insertion Loss

X

L

L

L

L

L

H

X

0.5dB

X

L

L

L

L

H

L

X

1dB

X

L

L

L

H

L

L

X

2dB

X

L

L

H

L

L

L

X

4dB

X

L

H

L

L

L

L

X

8dB

X

H

L

L

L

L

L

X

16dB

X

H

H

H

H

H

H

X

31.5dB