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
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Data Sheets
Application Notes
User Guides
Frequently Asked Questions
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD5174BCPZ-10-RL7 Production | 10 ld LFCSP (3x3mm) | REEL 1500 | -40 to 125C | 0 | 1.45 | Y |
| AD5174BRMZ-10 Production | 10 ld MSOP | OTH 50 | -40 to 125C | 1.77 | 1.45 | Y |
| AD5174BRMZ-10-RL7 Production | 10 ld MSOP | REEL 1000 | -40 to 125C | 0 | 1.45 | Y |
Reference Materials
