GENERAL DESCRIPTION

The AD5270/AD52711 are single-channel, 1024-/256-position digital rheostats that combine industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package.

The AD5270/AD5271 ensure less than 1 end-to-end resistor tolerance error and offer 50-times programmable (50-TP) memory.

FEATURES

Single-channel, 1024-/256-position resolution

20 kΩ, 50 kΩ, 100 kΩ nominal resistance

Maximum ±1 nominal resistor tolerance error

50-times programmable (50-TP) wiper memory

Rheostat mode temperature coefficient: 5 ppm/°C

2.7 V to 5.5 V single-supply operation

±2.5 V to ±2.75 V dual-supply operation for ac or bipolar operations

SPI-compatible interface

Wiper setting readback

Power on refreshed from 50-TP memory

Thin LFCSP, 10-lead, 3 mm × 3 mm × 0.8 mm package

Compact MSOP, 10-lead, 3 mm × 4.9 mm × 1.1 mm package

APPLICATIONS

Mechanical rheostat replacements

Op-amp: variable gain control

Instrumentation: gain, offset adjustment

Programmable voltage to current conversions

Programmable filters, delays, time constants

Programmable power supply

Sensor calibration