AD5292

Data Sheet AD5291/AD5292 256-/1024-Position, Digital Potentiometers with Maximum ±1% R-Tolerance Error and 20-TP Memory FEATURES FUNCTIONAL BLOCK DIAGRAM ► Single-channel, 256-/1024-position resolution ► 20 kΩ, 50 kΩ, and 100 kΩ nominal resistance ► Maximum ±1% nominal resistor tolerance error (resistor perform- ance mode) ► 20-times programmable wiper memory ► Rheostat mode temperature coefficient: 35 ppm/°C ► Voltage divider temperature coefficient: 5 ppm/°C ► +9 V to +33 V single-supply operation ► ±9 V to ±16.5 V dual-supply operation ► SPI-compatible serial interface ► Wiper setting readback ► Power-on refreshed from 20-TP memory APPLICATIONS ► Mechanical potentiometer replacement ► Instrumentation: gain and offset adjustment ► Programmable voltage-to-current conversion ► Programmable filters, delays, and time constants ► Programmable power supply ► Low resolution DAC replacement ► Sensor calibration VLOGIC SCLK SYNC DIN SDO RDY VDD POWER-ON RESET RESET AD5291/ AD5292 RDAC REGISTER A SERIAL DATA INTERFACE W OTP MEMORY BLOCK B VSS EXT_CAP GND Figure 1. 07674-001 GENERAL DESCRIPTION The AD5291/AD5292 are single-channel, 256-/1024-position digital potentiometers that combine industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package. These devices are capable of operating across a wide voltage range, supporting both dual supply operation at ±10.5 V to ±16.5 V and single supply operation at +21 V to +33 V, while ...