ADS7812UB集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS7812UB属于集成电路（IC）的模数转换器（ADC）。由德州仪器制造生产的ADS7812UB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

20μs max CONVERSION TIME

SINGLE +5V SUPPLY OPERATION

PIN-COMPATIBLE WITH 16-BIT ADS7813

EASY-TO-USE SERIAL INTERFACE

0.3 DIP-16 AND SO-16

±0.5LSB max INL AND DNL

72dB min SINAD

USES INTERNAL OR EXTERNAL

REFERENCE

MULTIPLE INPUT RANGES

35mW max POWER DISSIPATION

NO MISSING CODES

50μW POWER DOWN MODE

APPLICATIONS

DATA ACQUISITION SYSTEMS

INDUSTRIAL CONTROL

TEST EQUIPMENT

DIGITAL SIGNAL PROCESSING

DESCRIPTION

The ADS7812 is a low-power, single +5V supply, 12-bit

sampling analog-to-digital converter. It contains a complete

12-bit capacitor-based SAR A/D with a sample/hold, clock,

reference, and serial data interface.

The converter can be configured for a variety of input ranges

including ±10V, ±5V, 0V to 10V, and 0.5V to 4.5V. A high

impedance 0.3V to 2.8V input range is also available (input

impedance > 10MΩ). For most input ranges, the input

voltage can swing to +16.5V or –16.5V without damage to

the converter.

A flexible SPI compatible serial interface allows data to be

synchronized to an internal or external clock. The ADS7812

is specified at a 40kHz sampling rate over the –40°C to

+85°C temperature range. It is available in a 0.3 DIP-16 or

an SO-16 package.