MCP3550中文资料Delta Sigma A/D Converters Products数据手册Microchip规格书

描述 Description

The MCP355X devices are 2.7V to 5.5V low-power, 22-bit delta-sigma A/D converters. The devices offer output noise as low as 2.5 µVrms with a total unadjusted error of less than 10 ppm. The family exhibits less than 6 ppm integral non-linearity (INL) error, 3 µV offset error, and 2 ppm full scale error. The MCP355X devices provide high accuracy and low noise performance for applications where sensor measurements such as pressure, temperature and humidity are performed. With the internal oscillator and high oversampling rate, minimal external components are required for high accuracy applications. The fully differential analog inputs make it compatible with a wide variety of sensor and measurement applications. The MCP355X devices operate from -40°C to +125°C and are available in the space-saving 8-pin MSOP and SOIC packages.

特性 Features

·22-bit ADC with automatic internal offset and gain calibration
· Low output noise 2.5 µVrms
· 3 µV offset error
· 2 ppm typical full-scale error
· 6 ppm maximum INL error
· Total unadjusted error less than 10 ppm
· Sample rate 12.5 sps
· >120 dB rejection of 50 Hz noise
· No digital filter settling time, single command conversions through 3-wire SPI™ interface
· Low conversion current·100 µA typical (VDD = 2.7V)
·120 µA typical (VDD = 5.0V)

· 8-pin MSOP and SOIC packages
· Differential inputs with VSS to VDD common mode range
· 2.7V to 5.5V single supply operation
· Extended temperature range: -40°C to +125°C

简介

MCP3550属于集成电路（IC）的模数转换器（ADC）。由制造生产的MCP3550模数转换器（ADC）模数转换器（ADC、A/D 或 A 转 D）对模拟信号进行采样，例如由麦克风采集的声音或传感器的输出，然后将其转换为数字信号。一般来说，数字输出是二进制补码二进制数，与输入成比例。输入类型可能是差分、伪差分或单端输入。模数转换器可按照位数、采样率、输入数、接口、转换器数和架构（例如自适应增量、双斜率、折叠、流水线、SAR、三角积分、两步式）进行选择。