MAX1462中文资料低电压、低功耗、16位智能ADC数据手册ADI规格书

描述 Description

The MAX1462 implements a revolutionary concept in signal conditioning, where the output of its 16-bit analog-to-digital converter (ADC) is digitally corrected over the specified temperature range. This feature can be readily exploited by industrial and medical market segments, in applications such as sensors and smart batteries. Digital correction is provided by an internal digital signal processor (DSP) and on-chip 128-bit EEPROM containing user-programmed calibration coefficients. The conditioned output is available as a 12-bit digital word and as a ratiometric (proportional to the supply voltage) analog voltage using an on-board 12-bit digital-to-analog converter (DAC). The uncommitted op amp can be used to filter the analog output.
The analog front end includes a 2-bit programmable-gain amplifier (PGA) and a 3-bit coarse-offset (CO) DAC, which condition the sensor's output. This coarsely corrected signal is digitized by a 16-bit ADC. The DSP uses the digitized sensor signal, the temperature sensor, and correction coefficients stored in the internal EEPROM to produce the conditioned output.
Multiple or batch manufacturing of sensors is supported with a completely digital test interface. Built-in testability features on the MAX1462 result in the integration of three traditional sensor-manufacturing operations into one automated process: Pretest: Data acquisition of sensor performance under the control of a host test computer. Calibration and compensation: Computation and storage of calibration and compensation coefficients determined from transducer pretest data. Final test operation: Verification of transducer calibration and compensation, without removal from the pretest socket. The MAX1462 evaluation kit (EV kit) allows fast evaluation and prototyping, using a piezoresistive transducer (PRT) and a Windows®-based PC. The user-friendly EV kit simplifies small-volume prototyping; it is not necessary to understand fully the test-system interface, the calibration algorithm, or many other details to evaluate the MAX1462 with a particular sensor. Plug the PRT into the EV kit, plug the EV kit into a PC parallel port, connect the sensor to an excitation source (such as a pressure controller), and run the MAX1462 EV kit software. An oven is required for thermal compensation.

特性 Features

• Low-Voltage Operation (2.4V to 3.6V)
• Low-Noise, 310µA Single-Chip Sensor Signal Conditioning
• High-Precision Front End Resolves

应用 Application

• 潜入式计算机与液位测量
• 流量计
• 手持式仪表(PDA、掌上电脑)
• 水压系统
• 工业压力传感器与校准器
• 压阻式压力及加速度变送器与发送器
• 智能电池组/充电器
• 称重仪与张力测量

简介

MAX1462属于开发板套件编程器的评估演示板及套件。由制造生产的MAX1462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。