DESCRIPTION

The CAT5132 is a high voltage Digitally Programmable Potentiometer (DPP) with non-volatile wiper setting memory, operating like a mechanical potentiometer. The tap points between the 127 equal resistive elements are connected to the wiper output via CMOS switches. The switches are controlled by a 7-bit Wiper Control Register (WCR). The wiper setting can be stored in a 7-bit non-volatile Data Register (DR). The WCR is accessed via the I2C serial bus.

FEATURES

■ Single linear DPP with 128 taps

■ End-to-end resistance of 10k?, 50k? or 100k?

■ I2C interface

■ Fast Up/Down wiper control mode

■ Non-volatile wiper setting storage

■ Automatic wiper setting recall at power-up

■ Digital Supply range (VCC): 2.7V to 5.5V

■ Analog Supply range (V+): +8V to +16V

■ Low Standby Current: 15μA

■ 100 Year wiper setting memory

■ Industrial Temperature range: -40°C to +85°C

■ RoHS-compliant 10-pin MSOP package

APPLICATIONS

■ LCD screen adjustment

■ Volume control

■ Mechanical potentiometer replacement

■ Gain adjustment

■ Line impedance matching

■ VCOM setting adjustments