Dual Digitally Potentiometer
DATASHEET
X93254
Dual Digitally Controlled Potentiometers (XDCPs™)
FN8186 Rev 1.00 February 4, 2008
The Intersil X932...
Description
DATASHEET
X93254
Dual Digitally Controlled Potentiometers (XDCPs™)
FN8186 Rev 1.00 February 4, 2008
The Intersil X93254 is a dual digitally controlled potentiometer (XDCP). The device consists of two resistor arrays, wiper switches, a control section, and nonvolatile memory. The wiper positions are controlled by individual Up/Down interfaces.
A potentiometer is implemented by a resistor array composed of 31 resistive elements and a wiper switching network. The position of each wiper element is controlled by a set of independent CS, U/D, and INC inputs. The position of the wiper can be stored in nonvolatile memory and then be recalled upon during a subsequent power-up operation.
Each potentiometer is connected as a two-terminal variable resistor and can be used in a wide variety of applications including:
Bias and Gain control
LCD Contrast Adjustment
Pinout
X93254 (14 LD TSSOP)
TOP VIEW
DNC*
RL1 CS1 INC2 U/D2 RH2 VSS
1 2 3 4 5 6 7
14 RH1
13 U/D1 12 INC1 11 VCC 10 CS2
9 RL2 8 DNC*
Features
Dual solid-state potentiometers
Independent Up/Down interfaces
32 wiper tap points per potentiometer - Wiper position stored in nonvolatile memory and recalled on power-up
31 resistive elements per potentiometer - Temperature compensated - Maximum resistance tolerance of ± 30% - Terminal voltage, 0 to VCC
Low power CMOS - VCC = 3V ±10% - Active current, 250µA max - Standby current, 1µA max
High reliability - Endurance 200,000 data changes per bit - Register data reten...
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