TC850中文资料15-Bit, Fast Integrating CMOS A/D Converter数据手册Microchip规格书

描述 Description

The TC850 is a monolithic CMOS analog-to-digital converter (ADC) with resolution of 15-bits plus sign. It combines a chopper-stabilized buffer and integrator with a unique multiple-slope integration technique that increases conversion speed. The result is 16 times improvement in speed over previous 15-bit, monolithic integrating ADCs (from 2.5 conversions per sec up to 40 per sec). Only a voltage reference and a few noncritical passive components are required to form a complete 15-bit plus sign ADC. CMOS processing provides the TC850 with high-impedance differential inputs. Input bias current is typically only 30pA, permitting direct interface to sensors. Input sensitivity of 100 µV per least significant bit (LSB) eliminates the need for precision external amplifiers. The internal amplifiers are auto-zeroed, guaranteeing a zero digital output with 0V analog input. Conversions can be performed continuously or on command. Operating from ±5V supplies, the TC850 dissipates only 20mW. It is packaged in 40-pin plastic or ceramic dual-in-line packages (DIPs) and in a 44-pin plastic leaded chip carrier (PLCC), surface-mount package.

特性 Features

15-bit Resolution Plus Sign Bit
Up to 40 Conversions per Second
Monotonic
High Noise Immunity
Auto-Zeroed Amplifiers Eliminate Offset Trimming
Wide Dynamic Range: 96dB
Low Input Bias Current: 30pA
Low Input Noise: 30µVp-p
Sensitivity: 100µV
Flexible Operational Control
Continuous or On-Demand Conversions
Data Valid Output
± 5V Power Supply Operation, 20mW

简介

TC850属于集成电路（IC）的模数转换器（ADC）。由Microchip制造生产的TC850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。