ADS7822IDGKRQ1屬于集成電路（IC）的模數(shù)轉(zhuǎn)換器（ADC）。由美國(guó)德州儀器公司制造生產(chǎn)的ADS7822IDGKRQ1模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對(duì)模擬信號(hào)進(jìn)行采樣，例如由麥克風(fēng)采集的聲音或傳感器的輸出，然后將其轉(zhuǎn)換為數(shù)字信號(hào)。一般來說，數(shù)字輸出是二進(jìn)制補(bǔ)碼二進(jìn)制數(shù)，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數(shù)轉(zhuǎn)換器可按照位數(shù)、采樣率、輸入數(shù)、接口、轉(zhuǎn)換器數(shù)和架構(gòu)（例如自適應(yīng)增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進(jìn)行選擇。

1FEATURES

2· Qualified for Automotive Applications

· 200-kHz Sampling Rate

· Micropower:

1.6 mW at 200 kHz

0.54 mW at 75 kHz

0.06 mW at 7.5 kHz

· Power-Down Current: 3 mA Max

· MSOP-8 Package

· Pseudo-Differential Input

· Serial Interface

APPLICATIONS

· Battery-Operated Systems

· Remote Data Acquisition

· Isolated Data Acquisition

· Simultaneous Sampling, Multichannel Systems

DESCRIPTION

The ADS7822 is a 12-bit sampling analog-to-digital (A/D) converter with ensured specifications over a 2.7-V to

5.25-V supply range. It requires very little power even when operating at the full 200-kHz rate. At lower

conversion rates, the high speed of the device enables it to spend most of its time in the power-down mode—the

power dissipation is less than 60 mW at 7.5 kHz.

The ADS7822 also features operation from 2.0 V to 5 V, a synchronous serial interface, and a pseudo-differential

input. The reference voltage can be set to any level within the range of 50 mV to VCC.

Ultra low power and small size make the ADS7822 ideal for battery-operated systems. It is also a perfect fit for

remote data-acquisition modules, simultaneous multichannel systems, and isolated data acquisition. The

ADS7822 is available in an MSOP-8 package.