ADS7842E/1K集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS7842E/1K属于集成电路（IC）的模数转换器（ADC）。由德州仪器制造生产的ADS7842E/1K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。

FEATURES

SINGLE SUPPLY: 2.7V to 5V

4-CHANNEL INPUT MULTIPLEXER

UP TO 200kHz SAMPLING RATE

FULL 12-BIT PARALLEL INTERFACE

±1LSB INL AND DNL

NO MISSING CODES

72dB SINAD

LOW POWER: 2mW

SSOP-28 PACKAGE

APPLICATIONS

DATA ACQUISITION

TEST AND MEASUREMENT

INDUSTRIAL PROCESS CONTROL

MEDICAL INSTRUMENTS

LABORATORY EQUIPMENT

DESCRIPTION

The ADS7842 is a complete, 4-channel, 12-bit Analog-to-

Digital Converter (ADC). It contains a 12-bit, capacitorbased,

Successive Approximation Register (SAR) ADC with

a sample-and-hold amplifier, interface for microprocessor

use, and parallel, 3-state output drivers. The ADS7842 is

specified at a 200kHz sampling rate while dissipating only

2mW of power. The reference voltage can be varied from

100mV to VCC with a corresponding LSB resolution from

24μV to 1.22mV. The ADS7842 is tested down to 2.7V

operation.

Low power, high speed, and an onboard multiplexer make

the ADS7842 ideal for battery-operated systems such as

portable, multi-channel dataloggers and measurement equipment.

The ADS7842 is available in an SSOP-28 package

and is tested over the –40°C to +85°C temperature range.