DESCRIPTION

The DS1801 is a dual audio taper potentiometer having logarithmic resistive characteristics over the device range. Each potentiometer provides 65 wiper positions with a 1 dB increment per step and device mute. The 3-wire serial interface, using a CPU, provides the user the ability of reading or writing exact wiper positions of the two potentiometers. Additionally, the part contains a zero-crossing detection feature that minimizes noise resulting from wiper transitions. Packages for the part include a 14-pin PDIP, 16-pin SOIC, and 14-pin TSSOP.

FEATURES

● Ultra-low power consumption

● Operates from 3V or 5V supplies

● Two digitally controlled, 65-position potentiometers including mute

● Logarithmic resistive characteristics (1 dB per step)

● Zero-crossing detection eliminates noise caused by wiper movement

● Serial port provides means for setting and reading both potentiometers wipers

● 14-pin PDIP, 16-pin SOIC, and 14-pin TSSOP packages

● Operating Temperature Range:

- Industrial: -40°C to +85°C

● Software mute

● Resistance available: 45 kΩ