描述 Description

The TC7117A is a 3? digit CMOS analog-to-digital converter (ADC) containing all the active components necessary to construct a 0.05% resolution measurement system. Seven-segment decoders, polarity and digit drivers, voltage reference, and clock circuit are integrated on-chip. The TC7117A drives common anode light emitting diode (LED) displays directly with an 8mA drive current per segment. These devices incorporate a display hold (HLDR) function. The TC7117A reduces linearity error to less than 1 count. Roll-over error (the difference in readings for equal magnitude but opposite polarity input signals) is below ±1 count. High-impedance differential inputs offer 1 pA leakage current and a 1012 Ohm input impedance. The auto-zero cycle guarantees a zero display reading with a 0V input. The TC7117A features a precision, low-drift internal reference, and is functionally identical to the TC7117.

特性 Features

20 ppm/°C Typ.
Display Hold Function
Directly Drives LED Display
Guaranteed Zero Reading with Zero Input
Auto-Zero Cycle Eliminates Need for Zero Adjustment Potentiometer
True Polarity Indication for Precision Null Applications
High Impedance CMOS Differential Inputs: 1012 Ohm

簡(jiǎn)介

TC7117A屬于集成電路（IC）的顯示驅(qū)動(dòng)器。由制造生產(chǎn)的TC7117A顯示驅(qū)動(dòng)器顯示驅(qū)動(dòng)器是一種集成電路 (IC)，可在微處理器 (MPU)、微控制器 (MCU) 或其他電路系統(tǒng)之間提供轉(zhuǎn)換、接口和控制，用于 LCD、LED、OLED、DLP、真空熒光和 AMOLED 等顯示器。可能的通信接口和協(xié)議包括模擬、BCD、I2C、并行、串行、SMBus、SPI 和 QSPI。