RF Micro Devices Inc.

7628 Thorndike Road, Greensboro, NC 27409-9421

DS131204

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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RFDA2046

Programming Example: 6-Bit

SPI Timing Diagram Specifications

Parameter

Limit

Unit

Comment

t1

25

MHz max

CLK Frequency

t2

20

ns min

CLK High

t3

20

ns min

CLK Low

t4

5

ns min

DATA to CLK Setup Time

t5

5

ns min

DATA to CLK Hold Time

t6

30

ns min

DATA Valid

t7

5

ns min

LE to CLK Setup Time

t8

5

ns min

CLK to LE Setup Time

t9

10

ns min

LE Pulse Width

t10

20

ns min

Output Set

Power-up Programming Truth Table

PUP

Attenuator Setting

Low

Attenuation at max, 31.5dB

High

Attenuation at min, 0dB

Logic Voltage Levels

State

Logic

Low

0V to 0.8V

High

2.0V to 5.0V