X9319 Ver la hoja de datos (PDF) - Renesas Electronics

Número de pieza

componentes Descripción

Fabricante

X9319

Digitally Controlled Potentiometer (XDCP™)

Renesas Electronics 

X9319

Digitally Controlled Potentiometer (XDCP™)

The Intersil X9319 is a digitally controlled potentiometer

(XDCP). The device consists of a resistor array, wiper

switches, a control section, and nonvolatile memory. The

wiper position is controlled by a 3-wire interface.

The potentiometer is implemented by a resistor array

composed of 99 resistive elements and a wiper switching

network. Between each element and at either end are tap

points accessible to the wiper terminal. The position of the

wiper element is controlled by the CS, U/D, and INC inputs.

The position of the wiper can be stored in nonvolatile

memory and then be recalled upon a subsequent power-up

operation.

The device can be used as a three-terminal potentiometer

for voltage control or as a two-terminal variable resistor for

current control in a wide variety of applications.

Applications

• LCD bias control

• DC bias adjustment

• Gain and offset trim

• Laser diode bias control

• Voltage regulator output control

DATASHEET

FN8185

Rev 3.00

July 31, 2014

Features

• Solid-state potentiometer

• 3-wire serial interface

• Terminal voltage, 0 to +10V

• 100 wiper tap points

- Wiper position stored in nonvolatile memory and

recalled on power-up

• 99 resistive elements

- Temperature compensated

- End-to-end resistance range ±20%

• Low power CMOS

- VCC = 5V

- Active current, 3mA max.

- Standby current, 1mA max.

• High reliability

- Endurance, 100,000 data changes per bit

- Register data retention, 100 years

• RTOTAL value = 10kΩ

• Package

- 8 Ld SOIC

• Pb-free (RoHS compliant)

Block Diagram

VCC (SUPPLY VOLTAGE)

U/D

INC

CS

UP/DOWN

COUNTER

99

98

RH

UP/DOWN

(U/D)

INCREMENT

(INC)

DEVICE SELECT

(CS)

CONTROL

AND

MEMORY

VSS (GROUND)

GENERAL

RH

97

7-BIT

96

NONVOLATILE

ONE OF

RW

MEMORY

ONE

HUNDRED

DECODER

WIPER

RESISTOR

SWITCHES

ARRAY

RL

2

STORE AND

RECALL

1

VCC

CONTROL

VSS

CIRCUITRY

0

RL

RW

DETAILED

FN8185 Rev 3.00

July 31, 2014

Page 1 of 8

Share Link: