ADS7865IPBSR集成电路（IC）的模数转换器（ADC）规格书PDF中文资料

ADS7865IPBSR属于集成电路（IC）的模数转换器（ADC）。由美国德州仪器公司制造生产的ADS7865IPBSR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。

1FEATURES

2• Six Pseudo- or Four Fully Differential Inputs

• SNR: 71.7dB, THD: –87dB

• Programmable Channel Sequencer

• Programmable and Buffered Internal 2.5V

Reference

• Flexible Power-Down Features

• Variable Power-Supply Ranges: 2.7V to 5.5V

• Low-Power Operation: 44mW Maximum at 5V

• Operating Temperature Range:

–40°C to +125°C

• Pin-Compatible Upgrade for the ADS7862

APPLICATIONS

• Motor Control

• Multi-Axis Positioning Systems

• Three-Phase Power Control

DESCRIPTION

The ADS7865 is a dual, 12-bit, 2MSPS analog-to-

digital converter (ADC) with four fully differential or six

pseudo-differential input channels grouped into two

pairs for high-speed, simultaneous signal acquisition.

Inputs to the sample-and-hold (S/H) amplifiers are

fully differential and are maintained differentially to

the input of the ADC. This architecture provides

excellent common-mode rejection of 72dB at 100kHz,

which is a critical performance characteristic in noisy

environments.

The ADS7865 is pin-compatible with the ADS7862,

but offers additional features such as a

programmable channel sequencer and reference

output, flexible supply voltage (2.7V to 5.5V for AVDD

and BVDD), a pseudo-differential input multiplexer with three channels per ADC, and several power-down

features.

The ADS7865 is offered in a TQFP-32 package. It is

specified over the extended operating temperature

range of –40°C to +125°C.