描述 Description

The PS?81 is a system on chip for ultra low power and high resolution applications. It was designed especially for weight scales but fits also to any kind of force or torque measurements based on metal strain gauges. It takes full advantage of the digital measuring principle of PICOSTRAIN. Thus, it combines the performance of a 28-bit signal converter with a 24-bit microprocessor. Additional elements like an LCD driver, 3K ROM with many complex pre-defined functions, 2k EEPROM program memory and an integrated 10kHz oscillator round off the device. A small amount of external components is sufficient to build a complete weighing electronic.

特性 Features

? RMS noise 8.9nV SINC5, 5Hz

? Up to 250000 peak-peak divisions (2mV/V strain)

? Scalable udapte rate from <1Hz to 1000Hz

? Resolution: 28-bit ENOB (RMS)

? 24-bit internal microprocessor with 2 kB EEPROM

? Internal LCD controller for 4×14, 3×15 and 2×16 segments

? 4-wire serial SPI interface

? Current consumption ~5μA PS081 itself at low current configuration

? Power supply voltage: 2.1V to 3.6V

應(yīng)用 Application

? Torque wrenches

? Pressure indicators

? Legal for trade scales

? Counting scales

簡介

PS081屬于集成電路（IC）的傳感器檢測器接口。由制造生產(chǎn)的PS081傳感器和檢測器接口該系列產(chǎn)品可執(zhí)行信號調(diào)節(jié)、數(shù)據(jù)轉(zhuǎn)換、激勵生成和/或各種將傳感器或變送器機(jī)構(gòu)連接到主機(jī)設(shè)備所需的其他功能。示例包括用于 CCD 圖像傳感器的控制器、用于 4-20 mA 接口和類似應(yīng)用的電流變送器、超聲變送器前端、惠斯通電橋接口等。