ADI AD5174BRMZ-10-RL7

The AD5174 is a single-channel, 1024-position digital rheostat that combines industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package. This device supports both dual-supply operation at ±2.5 V to ±2.75 V and single-supply operation at 2.7 V to 5.5 V and offers 50-times programmable (50-TP) memory. The AD5174 device wiper settings are controllable through the SPI digital interface. Unlimited adjustments are allowed before programming the resistance value into the 50-TP memory. The AD5174 does not require any external voltage supply to facilitate fuse blow and there are 50 opportunities for permanent programming. During 50-TP activation, a permanent blow fuse command freezes the resistance position (analogous to placing epoxy on a mechanical rheostat). The AD5174 is available in a 3 mm×3 mm 10 -lead LFCSP package and in a 10-lead MSOP package. The part is guaranteed to operate over the extended industrial temperature range of -40°C to +125°C.

• Single-channel, 1024-position resolution
• 70 kΩ nominal resistance
• 50-times programmable (50-TP) wiper memory
• Rheostat mode temperature coefficient: 35 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 and memory readback
• Power on refreshed from memory
• Resistor tolerance stored in 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

• 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