X9430WV24I-2.7 datasheet(3/21 Pages) XICOR

Part #	X9430WV24I-2.7

Description	Dual Digitally Controlled Potentiometer (XDCP?? with Operational Amplifier

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X9430

– Preliminary Information

Characteristics subject to change without notice.

3 of 21

REV 1.0 6/20/00

www.xicor.com

PIN CONFIGURATION

PIN NAMES

PRINCIPLES OF OPERATION

The X9430 is an integrated microcircuit incorporating two

digitally controlled potentiometers, two operational

amplifiers and their associated registers and counters;

and the serial interface logic providing direct communica-

tion between the host and the digitally controlled

potentiometers.

Serial Interface

The X9430 supports the SPI interface hardware con-

ventions. The device is accessed via the SI input with

data clocked in on the rising edge of SCK. CS must be

LOW and the HOLD and WP pins must be HIGH dur-

ing the entire operation.

VCC

RL0

RH0

WP

A1

1

2

3

4

5

6

7

8

9

10

24

23

22

21

20

19

18

17

16

15

V+

VOUT0

VNI0

VINV0

A0

S0

HOLD

SCK

VINV1

VNI1

SOIC

X9430

VSS

RW0

14

13

11

12

CS

RL1

RH1

RW1

VOUT1

V-

SI

V-

VINV0

VNI0

HOLD

SO

SCK

1

2

3

4

5

6

7

8

9

10

24

23

22

21

20

19

18

17

16

CS

VCC

RW0

TSSOP

X9430

V+

VOUT0

11

12

A0

VOUT1

VNI1

VINV1

RL0

RH0

VSS

RW1

RH1

RL1

A1

SI

WP

15

14

13

Symbol

Description

SCK

Serial Clock

SI

Serial Input

SO

Serial Output

A0-A1

Device Address

CS

Chip Select

HOLD

Hold

RH0–RH1, RL0–RL1

Potentiometers (terminal

equivalent)

RW0–RW1

Potentiometers (wiper

equivalent)

VNI(0,1), VINV(0,1)

Amplifier Input Voltages

VOUT0, VOUT1

Amplifier Outputs

WP

Hardware Write Protection

V+,V-

Analog and Voltage Amplifier

Supplies

VCC

System/Digital Supply Voltage

VSS

System Ground

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X9430WV24I-2.7 Datasheet(PDF) 3 Page - Xicor Inc.

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