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 4x14, 3x15 and 2x16 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