EVAL-AD5254SDZ开发板套件编程器的评估演示板及套件规格书PDF中文资料

EVAL-AD5254SDZ属于开发板套件编程器的评估演示板及套件。由亚德诺半导体技术有限公司制造生产的EVAL-AD5254SDZ评估和演示板及套件该系列产品提供了一种方便的方法，在经过验证的实施环境中评估某些重点器件的性能或特性。评估方法通常有完善的文档说明，并且视乎具体情况由评估软件提供支持。产品通常由印刷电路板组成，板上已装有重点器件以及必要或有用的支持元器件，另外也可能包括其他组件，例如电缆或电源。对于数量特别多或类别独特的器件类别(如 ADC、DAC 和开关模式电源)，评估平台可组合为一个单独的产品系列。

GENERAL DESCRIPTION

The AD5253/AD5254 are quad channel, I2C, nonvolatile memory, digitally controlled potentiometers with 64/256 positions, respectively. These devices perform the same electronic adjust ment functions as mechanical potentiometers, trimmers, and variable resistors.

FEATURES

AD5253: Quad 64-position resolution

AD5254: Quad 256-position resolution

1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ

Nonvolatile memory1 stores wiper settings with write protection

Power-on refreshed to EEMEM settings in 300 µs typ

EEMEM rewrite time = 540 µs typ

Resistance tolerance stored in nonvolatile memory

12 extra bytes in EEMEM for user-defined information

I2C® compatible serial interface

Direct read/write accesses of RDAC2 and EEMEM registers

Predefined linear increment/decrement commands

Predefined ±6 dB step change commands

Synchronous or asynchronous quad channel update

Wiper setting readback

4 MHz bandwidth—1 kΩ version

Single supply 2.7 V to 5.5 V

Dual supply ±2.25 V to ±2.75 V

2 slave address decoding bits allow operation of 4 devices

100-year typical data retention, TA = 55°C

Operating temperature: –40°C to +85°C

APPLICATIONS

Mechanical potentiometer replacement

Low resolution DAC replacement

RGB LED backlight control

White LED brightness adjustment

RF base station power amp bias control

Programmable gain and offset control

Programmable attenuators

Programmable voltage-to-current conversion

Programmable power supply

Programmable filters

Sensor calibrations