AD5174 Single-Channel, 1024-Position, Digital Rheostat with SPI interface and 50-TP Memory

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 trimmer).

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.

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
Features and Benefits
  • Single-channel, 1024-position resolution
  • 10 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 x 3 mm x 0.8 mm package
  • Compact MSOP, 10-lead,
    3 mm × 4.9 mm × 1.1 mm package
Digital to Analog Converters
Data Sheets
Documentnote
AD5174: Single-Channel, 1024-Position, Digital Rheostat with SPI Interface and 50-TP Memory Data Sheet (Rev. B)PDF 1002 kB
Application Notes
Documentnote
AN-1291: Digital Potentiometers: Frequently Asked Questions (Rev. A)PDF 805 kB
User Guides
Documentnote
UG-094: Evaluation Board for 10-Bit, Serial Input, High Precision Digital RheostatsPDF 432 kB
Frequently Asked Questions
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD5174BCPZ-10-RL7 Production10 ld LFCSP (3x3mm)REEL 1500-40 to 125C01.45Y
AD5174BRMZ-10 Production10 ld MSOPOTH 50-40 to 125C1.771.45Y
AD5174BRMZ-10-RL7 Production10 ld MSOPREEL 1000-40 to 125C01.45Y
Reference Materials
AD5174: Single-Channel, 1024-Position, Digital Rheostat with SPI Interface and 50-TP Memory Data Sheet (Rev. B) ad5174
AN-1291:数字电位计:常见问题解答 (Rev. A) ad8402
AN-1291: Digital Potentiometers: Frequently Asked Questions (Rev. A) ad8402
UG-094: Evaluation Board for 10-Bit, Serial Input, High Precision Digital Rheostats ad5270
为您的应用选择合适的数字电位计 ad8402