TC7129中文资料4-1/2 Digit ADC with On-Chip LCD Drivers数据手册Microchip规格书

描述 Description

The TC7129 is a 4-1/2 digit analog-to-digital converter (ADC) that directly drives a multiplexed liquid crystal display (LCD).Fabricated in high-performance, low-power CMOS, the TC7129 ADC is designed specifically for high-resolution, battery-powered digital multimeter applications. The traditional dual-slope method of A/D conversion has been enhanced with a successive integration technique to produce readings accurate to better than 0.005% of full scale, and resolution down to 10µV per count. The TC7129 includes features important to multimeter applications. It detects and indicates low-battery condition. A continuity output drives an annunciator on the display, and can be used with an external driver to sound an audible alarm. Overrange and underrange outputs and a range-change input provide the ability to create auto-ranging instruments. For snapshot readings, the TC7129 includes a latch-and-hold input to freeze the present reading. This combination of features makes the TC7129 the ideal choice for full-featured multimeter and digital measurement applications.

特性 Features

Count Resolution: ±19,999
Resolution on 200 mV Scale: 10 µV
True Differential Input and Reference
Low Power Consumption: 500 µA at 9V
Direct LCD Driver for 4-1/2 Digits
Low Battery Indicator, and Continuity Indicator
Overrange and Underrange Outputs
Range Select Input: 10:1
High Common Mode Rejection Ratio: 110 dB
External Phase Compensation Not Required

简介

TC7129属于集成电路（IC）的显示驱动器。由制造生产的TC7129显示驱动器显示驱动器是一种集成电路 (IC)，可在微处理器 (MPU)、微控制器 (MCU) 或其他电路系统之间提供转换、接口和控制，用于 LCD、LED、OLED、DLP、真空荧光和 AMOLED 等显示器。可能的通信接口和协议包括模拟、BCD、I2C、并行、串行、SMBus、SPI 和 QSPI。