X9314 Datasheet, PDF (1/10 Pages) Xicor Inc. – E2POT™ Nonvolatile Digital Potentiometer

APPLICATION NOTES
AVA I L A B L E
AN42 • AN44–50 • AN52 • AN53 • AN71 • AN73
TXe9r3m14inal Voltage ±5V, 32 Taps, Log Taper
X9314
E²POT^™ Nonvolatile Digital Potentiometer
FEATURES
• Low Power CMOS
—V_CC = 3V to 5.5V
—Active Current, 3mA Max
—Standby Current, 500µA Max
• 31 Resistive Elements
—Temperature Compensated
—±20% End to End Resistance Range
— –5V to +5V Range
• 32 Wiper Tap Points
—Wiper Positioned via Three-Wire Interface
—Similar to TTL Up/Down Counter
—Wiper Position Stored in Nonvolatile
Memory and Recalled on Power-Up
• 100 Year Wiper Position Data Retention
• X9314W = 10KΩ
• Packages
—8-Lead MSOP
—8-Lead PDIP
—8-Lead SOIC
DESCRIPTION
The Xicor X9314 is a solid state nonvolatile potentiom-
eter and is ideal for digitally controlled resistance trim-
ming.
The X9314 is a resistor array composed of 31 resistive
elements. Between each element and at either end are
tap points accessible to the wiper element. 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 nonvola-
tile memory and then be recalled upon a subsequent
power-up operation.
All Xicor nonvolatile Digitally Controlled Potentiometers
are designed and tested for applications requiring ex-
tended endurance and data retention.
FUNCTIONAL DIAGRAM
U/D
5-BIT
INC
UP/DOWN
CS
COUNTER
5-BIT
NONVOLATILE
MEMORY
VCC
GND
STORE AND
RECALL
CONTROL
CIRCUITRY
E²POT™ is a trademark of Xicor, Inc.
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
6427-1.7 6/12/96 T3/C1/D8 NS
31
30
29
ONE ²⁸
OF
THIRTY-
TWO
DECODER
2
1
0
VH
TRANSFER
GATES
RESISTOR
ARRAY
VL
VW
6427 FHD F01
1
Characteristics subject to change without notice