A
PPLICATION
N
OTES
A V A I L A B L E
AN42 鈥?AN44鈥?8 鈥?AN50 鈥?AN52 鈥?AN53 鈥?AN71 鈥?AN73
Terminal Voltage 0V to +15V, 100 Taps
X9312
X9312
E
2
POT鈩?Nonvolatile Digital Potentiometer
FEATURES
DESCRIPTION
The Xicor X9312 is a solid state nonvolatile potentiom-
eter and is ideal for digitally controlled resistance trim-
ming.
The X9312 is a resistor array composed of 99 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.
The resolution of the X9312 is equal to the maximum
resistance value divided by 99. As an example, for the
X9312U (50K鈩? each tap point represents 505鈩?
All Xicor nonvolatile memories are designed and tested
for applications requiring extended endurance and data
retention.
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Compatible with X9C102/103/104/503
Low Power CMOS
鈥擜ctive Current, 3mA Max
鈥擲tandby Current, 1mA Max
99 Resistive Elements
鈥擳emperature Compensated
鈥?/div>
鹵
20% End to End Resistance Range
鈥?0 to +15V Range
100 Wiper Tap Points
鈥擶iper Positioned via Three-Wire Interface
鈥擲imilar to TTL Up/Down Counter
鈥擶iper Position Stored in Nonvolatile
Memory and Recalled on Power-Up
100 Year Wiper Position Data Retention
X9312Z = 1K
鈩?/div>
X9312W = 10K
鈩?/div>
X9312U = 50K
鈩?/div>
X9312T = 100K
鈩?/div>
FUNCTIONAL DIAGRAM
U/D
INC
CS
7-BIT
UP/DOWN
COUNTER
99
98
97
VH
7-BIT
NONVOLATILE
MEMORY
ONE
OF
ONE-
HUNDRED
DECODER
96
TRANSFER
GATES
2
RESISTOR
ARRAY
VCC
GND
STORE AND
RECALL
CONTROL
CIRCUITRY
1
0
VL
VW
3865 FHD F01
E
2
POT鈩?is a trademark of Xicor, Inc.
漏Xicor, Inc. 1994, 1995 Patents Pending
3865-2.4 12/1/95 T1/C0/D0 NS
1
Characteristics subject to change without notice
X9312ZSM相關(guān)型號PDF文件下載
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英文版
Terminal Voltage 0V to + 15V, 100 Taps
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