AD6674 datasheet(78/91 Pages) AD

78 / 91 page

AD6674

Data Sheet

Reg.

Addr.

(Hex)

Name

Bit 7

(MSB)

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0 (LSB)

Default

Notes

0x019

Buffer

Control 2

(local)

0100 = Setting 1 (default for AD6674-750)

0101 = Setting 2 (default for AD6674-1000)

0110 = Setting 3 (default for AD6674-500)

0111 = Setting 4

(see Table 10 for setting per frequency range)

0xXX

0x01A

Buffer

Control 3

(local)

1000 = Setting 1

1001 = Setting 2 (default for AD6674-750 and

AD6674-1000)

1010 = Setting 3 (default for AD6674-500)

(see Table 10 for setting per frequency range)

0x09;

0x0A

for

AD6674

-500

0x11A

Buffer

Control 4

(local)

High

frequency

setting

0 = off

(default)

1 = on

0x00

0x935

Buffer

Control 5

(local)

Low

frequency

operation

0 = off

1 = on

(default)

0x04

0x025

Input full-

scale range

(local)

Full-scale adjust

0000 = 1.94 V

1000 = 1.46 V

1001 = 1.58 V

1010 = 1.70 V (default for AD6674-750 and

AD6674-1000)

1011 = 1.82 V

1100 = 2.06 V (default for AD6674-500)

0x0A;

0x0C

for

AD6674

-500

V p-p

differ-

ential;

use in

con-

junction

with

Reg.

0x030

Input full-

scale control

(local)

Full-scale control

See Table 10 for recommended settings

for different frequency bands;

default values:

AD6674-1000 = 110

AD6674-750 = 101

AD6674-500 = 001

AD6674-500 = 110 (for <1.82 V)

0xXX

Used in

conjunc-

tion

with

Reg.

0x025

ADC Function Registers

0x024

V_1P0

control

1.0 V

reference

select

0 =

internal

1 =

external

0x00

0x028

Temp-

erature

diode

Diode

selection

0 = no

diode

selected

1 =

temper-

ature diode

selected

0x00

0x03F

PDWN/

STBY pin

control

(local)

0 =

PDWN/

STBY

enabled

1 =

disabled

0x00

Used in

conjunc-

tion

with

Reg.

0x040

Rev. B | Page 78 of 91

AD6674 Datasheet(PDF) 78 Page - Analog Devices

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