X93255

DATASHEET X93255 Dual Digitally Controlled Potentiometers (XDCPs™) FN8187 Rev 1.00 February 4, 2008 The Intersil X93255 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 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 X93255 (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 ± 25% - Terminal voltage, 0 to VCC Low power CMOS - VCC = 5V ± 10% - Active current, 200µA typ. - Standby current, 4µA max High reliability - Endurance 200,000 data changes per bit - Register data retention, 10...