AD9271 datasheet(40/58 Pages) AD

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AD9271

Preliminary Technical Data

Rev. PrA | Page 40 of 58

Addr.

(Hex)

Parameter Name

Bit 7

(MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

(LSB)

Default

Value

(Hex)

Default Notes/

Comments

serial_control

LSB first

1 = on

0 = off

(default)

<10

MSPS,

low

encode

rate

mode

1 = on

0 = off

(default)

000 = 12 bits (default, normal

bit stream)

001 = 8 bits

010 = 10 bits

011 = 12 bits

100 = 14 bits

0x00

Serial stream

control. Default

causes MSB first

and the native bit

stream (global).

serial_ch_stat

Channel

output

reset

1 = on

0 = off

(default)

Channel

power-

down

1 = on

0 = off

(default)

0x00

Used to power

down individual

sections of a

converter (local).

Flex_filter

Enable

automatic

low-pass

tuning

1 = on

0 = off

(default)

High-pass filter

cutoff

00 = dc (default)

01 = 700 kHz

10 = 350 kHz

0x00

Filter cutoff

(global)

Analog_Input

LOSW

1 = on

0 = off

(default)

0x00

LNA active

termination/input

impedance

(global)

Cross_point_Switch

Crosspoint switch enable

0 0000 = CDW0p/n

0 0001 = CDW1p/n

0 0010 = CDW2p/n

0 0011 = CDW3p/n

0 0100 = CDW4p/n

0 0101 = CDW5p/n

0 0111 = power down CW channel

1 0000 = CDW0p SE

1 0001 = CDW1p SE

1 0010 = CDW2p SE

1 0011 = CDW3p SE

1 0100 = CDW4p SE

1 0101 = CDW5p SE

1 0111 = power down CW channel

1 1000 = CDW0n SE

1 1001 = CDW1n SE

1 1010 = CDW2n SE

1 1011 = CDW3n SE

1 1100 = CDW4n SE

1 1101 = CDW5n SE

1 1111 = power down CW channel

0x07

Crosspoint switch

enable (local)

AD9271 Datasheet(PDF) 40 Page - Analog Devices

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