AD5271BCPZ-20-RL7

1024 / 256位， 1 ％电阻容差误差， SPI接口和50 -TP存储器数字电位器 1024-/256-Position, 1% Resistor Tolerance Error, SPI Interface and 50-TP Memory Digital Rheostat

Product Details

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**

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Mechanical potentiometer replacements

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Op-amp: variable gain control

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Instrumentation: gain, offset adjustment

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Programmable voltage-to-current conversions

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Programmable filters, delays, time constants

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Programmable power supply

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Sensor calibration

### Features and Benefits

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Single-channel, 1024-/256-position resolution

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20 kΩ, 50 kΩ and 100 kΩ

nominal resistance

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Maximum ±1% nominal resistor tolerance error

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50-times programmable 50-TP wiper memory

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Rheostat mode temperature coefficient: 5 ppm/°C

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2.7 V to 5.5 V single-supply operation

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±2.5 V to ±2.75 V dual-supply operation for ac or bipolar operations

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SPI-compatible interface

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Wiper setting readback

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Power on refreshed from 50-TP memory

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Thin LFCSP, 10-lead,

3 mm × 3 mm × 0.8 mm package

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Compact MSOP, 10-lead,

3 mm × 4.9 mm × 1.1 mm package