Table of Contents Section 1 – New and Featured Products

®
Signal Conditioning/Calibration and Control Products
X9319 10V Digital Potentiometer (Non-volatile)
Product Highlights
• Up/Down Digital Potentiometer works up to 10V
• Non-volatile wiper with 100-tap 10kΩ and 50kΩ total resistance
Key Features
• Non-volatile storage of wiper position
• 3-wire Up/Down digital interface
• Power On Recall of wiper position
• 8 pin DIP and SOIC
• Excellent Linearity
Benefits
• Digital Programmability
• Set and Forget Calibration
• Reliability
• Dynamic Controls
— Real time calibration
— Adaptive response
• Non-volatile storage and recall of wiper position
• Power On Recall circuits
• General purpose EEPROM
Description
The Xicor X9319 is a digitally controlled potentiometer (XDCP).
The device consists of a resistor array, wiper switches, a control
section, and non-volatile 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 non-volatile 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.
Pin Configuration
INC
U/D
R H
V SS
1
2
3
4
DIP/SOIC
X9319
8
7
6
5
V CC
CS
R L
R W
Block Diagram
V CC (Supply Voltage)
U/D
INC
CS
Up/Down
Counter
99
98
R H
Up/Down
(U/D)
Increment
(INC)
Device Select
(CS)
Control
and
Memory
V SS (Ground)
General
R H
R W
R L
V CC
V SS
7-Bit
Nonvolatile
Memory
Store and
Recall
Control
Circuitry
97
96
One of
One Hundred
Decoder
2
1
0
Wiper
Switches
Resistor
Array
R L
R W
Detailed
* for ordering information refer to page 1-45 See Product Family Tree
on page 2-1
1–36 www.xicor.com