MAX1458中文资料1%精确度、数字调节传感器信号调理器数据手册ADI规格书

描述 Description

The MAX1458 highly integrated analog-sensor signal processor is optimized for piezoresistive sensor calibration and compensation without any external components. It includes a programmable current source for sensor excitation, a 3-bit programmable-gain amplifier (PGA), a 128-bit internal EEPROM, and four 12-bit DACs. Achieving a total error factor within 1% of the sensor's repeatability errors, the MAX1458 compensates offset, offset temperature coefficient, full-span output (FSO), FSO temperature coefficient (FSOTC), and FSO nonlinearity of silicon piezoresistive sensors.
The MAX1458 calibrates and compensates first-order temperature errors by adjusting the offset and span of the input signal via digital-to-analog converters (DACs), thereby eliminating quantization noise. Built-in testability features on the MAX1458 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 (in an internal EEPROM) of calibration and compensation coefficients computed by the test computer and downloaded to the MAX1458.
Final test operation:Verification of transducer calibration and compensation without removal from the pretest socket.
Although optimized for use with piezoresistive sensors, the MAX1458 may also be used with other resistive sensors (i.e., accelerometers and strain gauges) with some additional external components.

特性 Features

• Medium Accuracy (±1%), Single-Chip Sensor Signal Conditioning
• Sensor Errors Trimmed Using Correction Coefficients Stored in Internal EEPROM- Eliminates the Need for Laser Trimming and Potentiometers
• Compensates Offset, Offset-TC, FSO, FSOTC, FSO Linearity
• Programmable Current Source (0.1mA to 2.0mA) for Sensor Excitation
• Fast Signal-Path Settling Time (

应用 Application

• 水压系统
• 歧管绝对压力(MAP)传感器
• 压阻式压力及加速度传感器
• 变送器与发送器

简介

MAX1458属于集成电路（IC）的驱动器接收器收发器。由ADI制造生产的MAX1458驱动器，接收器，收发器该系列产品的主要功能是提供必需的硬件资源，以通过延长电缆或印制线进行通信。确切的功能会因所采用的通信协议而异，可能包括诸如瞬态抑制之类的功能，这些功能对于通信用途可能并非绝对必要，但对于可能的使用环境却是明智之选。