AD5271 256-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rheostat
The AD5270/AD5271 are single-channel, 1024-/ 256-position digital rheostats that combine industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package.
The AD5270/AD5271 ensure less than 1% end-to-end resistor tolerance error and offer 50-times programmable (50-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 AD5270/AD5271 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 AD5270/AD5271 do 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 AD5270/AD5271 are available in a 3 mm x 3 mm, 10-lead LFCSP package and in a 10-lead MSOP package. The parts are guaranteed to operate over the extended industrial temperature range of −40°C to +125°C.
Applications
- Mechanical potentiometer 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-/256-position resolution
- 20 kΩ, 50 kΩ and 100 kΩ
nominal resistance - Maximum ±1% nominal resistor tolerance error
- 50-times programmable (50-TP) wiper memory
- Rheostat mode temperature coefficient: 5 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 readback
- Power on refreshed from 50-TP 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
| IBIS ModelsSoftware & Systems Requirements |
Data Sheets
Application Notes
User Guides
Frequently Asked Questions
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD5271BCPZ-100-RL7 Last Time Buy | 10 ld LFCSP (3x3mm) | REEL 1500 | -40 to 125C | 0 | 0.95 | Y |
| AD5271BCPZ-20-RL7 Production | 10 ld LFCSP (3x3mm) | REEL 1500 | -40 to 125C | 0 | 0.95 | Y |
| AD5271BRMZ-100 Production | 10 ld MSOP | OTH 50 | -40 to 125C | 1.16 | 0.95 | Y |
| AD5271BRMZ-100-RL7 Production | 10 ld MSOP | REEL 1000 | -40 to 125C | 0 | 0.95 | Y |
| AD5271BRMZ-20 Production | 10 ld MSOP | OTH 50 | -40 to 125C | 1.16 | 0.95 | Y |
| AD5271BRMZ-20-RL7 Production | 10 ld MSOP | REEL 1000 | -40 to 125C | 0 | 0.95 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-AD5270SDZ | Evaluation Board | 59 | Y |
| EVAL-SDP-CB1Z | Evaluation Controller Board | 99 | Y |
Reference Materials
