FN8222 Rev 3.00

Page 1 of 10

July 20, 2009

FN8222

Rev 3.00

July 20, 2009

X9C102, X9C103, X9C104, X9C503

Digitally Controlled Potentiometer (XDCP™)

DATASHEET

The X9C102, X9C103, X9C104, X9C503 are Intersils’

digitally controlled (XDCP) potentiometers. The device

consists of a resistor array, wiper switches, a control section,

and non-volatile memory. The wiper position is controlled by

a three-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 non-volatile

memory and then be recalled upon a subsequent power-up

operation.

The device can be used as a three-terminal potentiometer or

as a two-terminal variable resistor in a wide variety of

applications ranging from control to signal processing to

parameter adjustment.

Pinout

X9C102, X9C103, X9C104, X9C503

(8 LD SOIC, 8 LD PDIP)

TOP VIEW

Features

• Solid-State Potentiometer

• Three-Wire Serial Interface

• 100 Wiper Tap Points

- Wiper Position Stored in Non-volatile Memory and

Recalled on Power-up

• 99 Resistive Elements

- Temperature Compensated

- End-to-End Resistance, ±20%

- Terminal Voltages, ±5V

• Low Power CMOS

- Active Current, 3mA max.

- Standby Current, 750µA max.

• High Reliability

- Endurance, 100,000 Data Changes per Bit

- Register Data Retention, 100 years

• X9C102 = 1k



• X9C103 = 10k



• X9C503 = 50k



• X9C104 = 100k



• Packages

- 8 Ld SOIC

- 8 Ld PDIP

• Pb-Free Available (RoHS Compliant)

Block Diagram

CS

INC

U/D

1

2

3

4

8

7

6

5

7-BIT

UP/DOWN

COUNTER

7-BIT

NON-VOLATILE

MEMORY

STORE AND

RECALL

CONTROL

CIRCUITRY

ONE

OF

HUNDRED

DECODER

RESISTOR

ARRAY

U/D

INC

CS

TRANSFER

ONE-

GATES

99

98

97

96

2

1

0

GND

UP/DOWN

(INC)

INCREMENT

DEVICE

(U/D)

(CS)

CONTROL

AND

MEMORY

GENERAL

SELECT

DETAILED