RF Micro Devices Inc.

7628 Thorndike Road, Greensboro, NC 27409-9421

DS140902

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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RFDA4005

Serial Attenuation Word Truth Table

Control Bit

Gain Relative to

Max Gain

D5

D4

D3

D2

D1

D0

1

1

1

1

1

1

0dB / Reference Insertion Loss

1

1

1

1

1

0

-0.5dB

1

1

1

1

0

1

-1dB

1

1

1

0

1

1

-2dB

1

1

0

1

1

1

-4dB

1

0

1

1

1

1

-8dB

0

1

1

1

1

1

-16dB

0

0

0

0

0

0

-31,5dB Max Attenuation

Timing Diagrams

CLK

DATA

t6

LE

t1

t2

t3

t4

t5

t7

t8

DOUT

t9

t10