深圳市中立信电子科技有限公司

AD5270BRMZ-20

1024-/256-Position, 1% Resistor Tolerance Error,  SPI Interface and 50-TP Memory Digital Rheostat

数字电位计 IC 1024-pos 5v SPI 50-TP Mem Digi Rstat

FEATURES AD5270BRMZ-20

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 AD5270BRMZ-20

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

GENERAL DESCRIPTION AD5270BRMZ-20

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.

The guaranteed industry leading low resistor tolerance error

feature simplifies open-loop applications as well as precision

calibration and tolerance matching applications.