AD5175

PRODUCTION

Single-Channel, 1024-Position, Digital Rheostat with I²C Interface and 50-TP Memory

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Overview

  • Single-channel, 1024-position resolution
  • 10 kΩ nominal resistance
  • 50-times programmable (50-TP) wiper memory
  • Rheostat mode temperature coefficient: 35 ppm/°C
  • Compact MSOP, 10-lead 3 mm × 4.9 mm × 1.1 mm package
  • ±2.5 V to ±2.75 V dual-supply operation for ac or bipolar operations
  • I2C-compatible interface
  • Wiper setting and memory readback
  • Power on refreshed from memory
  • Resistor Tolerance Stored in Memory
  • Thin LFCSP, 10-lead, 3 mm x 3 mm x 0.8 mm package
  • 2.7 V to 5.5 V single-supply operation

The AD5175 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 AD5175 device wiper settings are controllable through the I2C–compatible digital interface. Unlimited adjustments are allowed before programming the resistance value into the 50-TP memory. The AD5175 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 trimmer).

The AD5175 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.

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

AD5175
Single-Channel, 1024-Position, Digital Rheostat with I²C Interface and 50-TP Memory
AD5175 Functional Block Diagram AD5175 Pin Configuration
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