ADI AD5292BRUZ-100-RL7

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 ensuring less than 1% end-to-end resistor tolerance error and offering 20-time programmable (20-TP) memory. The guaranteed industry leading low resistor tolerance error feature simplifies open-loop applications as well as precision calibration and tolerance matching applications. The AD5291/AD5292 device wiper settings are controllable through the SPI digital interface. Unlimited adjustments are allowed before programming the resistance value into the 20-TP memory. The AD5291/AD5292 do not require any external voltage supply to facilitate fuse blow, and there are 20 opportunities for permanent programming. During 20-TP activation, a permanent blow fuse command freezes the wiper position (analogous to placing epoxy on a mechanical trimmer). The AD5291/AD5292 are available in a compact 14-lead TSSOP package. The part is guaranteed to operate over the extended industrial temperature range of -40°C to +105°C. In this data sheet, the digital potentiometer and RDAC terms are used interchangeably.

• Single-channel, 256-/1024-position resolution
• 20 kΩ, 50 kΩ, and 100 kΩ nominal resistance
• Maximum ±1% nominal resistor tolerance error (resistor performance mode)
• 20-times programmable wiper memory
• Rheostat mode temperature coefficient: 35 ppm/°C
• Voltage divider temperature coefficient: 5 ppm/°C
• +9V to +33V 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

• 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