AD5274
256-Position, 1% Resistor Tolerance Error, I2C Interface and 50-TP Memory Digital Rheostat
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Overview
Features and Benefits
- Single-channel, 1024-/256-position resolution
- 20 kΩ, 50 kΩ, 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
- I2C-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
Product Details
The AD5272 / AD5274 are single-channel, 1024-/256-position digital rheostats that combine industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package.
The AD5272 / AD5274 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 AD5272 / AD5274 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 AD5272/AD5274 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 wiper position (analogous to placing epoxy on a mechanical trimmer).
The AD5272 / AD5274 are available in a 3 mm × 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 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
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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UG-094: Evaluation Board for 10-Bit, Serial Input, High Precision Digital Rheostats6/30/2010PDF432 kB
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FAQs7/26/2017
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Choosing the Correct digiPOT for Your Application6/7/2013PDF311 K
Software & Systems Requirements
Device Drivers
Tools & Simulations
IBIS Models
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD5274BCPZ-100-RL7 | Material Declaration | Reliability Data | 10-Lead LFCSP (3mm x 3mm) | |
| AD5274BCPZ-20-RL7 | Material Declaration | Reliability Data | 10-Lead LFCSP (3mm x 3mm) | |
| AD5274BRMZ-100 | Material Declaration | Reliability Data | 10-Lead MSOP | |
| AD5274BRMZ-20 | Material Declaration | Reliability Data | 10-Lead MSOP | |
| AD5274BRMZ-20-RL7 | Material Declaration | Reliability Data | 10-Lead MSOP | |
| Wafer Fabrication Data |
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.