AD5272集成电路（IC）的数字电位计规格书PDF中文资料

AD5272属于集成电路（IC）的数字电位计。由亚德诺半导体技术有限公司制造生产的AD5272数字电位计数字电位器是一系列集成电路器件，可提供类似于传统机械电位器或变阻器的可调节电阻，但通过电子信号而非机械输入来进行控制。虽然这些器件的电阻可耗散的电能相对有限，但其电子控制能力有助于小型化、自动化和远程控制信号级模拟电路，而这些电路本来可能会使用机械电位器。

GENERAL DESCRIPTION

The AD5272/AD52741 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.

FEATURES

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

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