ADS774HIDW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ADS774HIDW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(lái)說(shuō)，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(lèi)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(xiàn)、SAR、三角積分、兩步式）進(jìn)行選擇。

1FEATURES

2· Drop-In Replacement for the ADS774

· Complete Sampling ADC with Reference,

Clock, and Microprocessor Interface

· Fast Acquisition and Conversion: 8.5ms Max

Over Temperature

· Eliminates External Sample/Hold in Most

Applications

· Ensured AC and DC Performance

· Single +5V Supply Operation

· Low Power: 120mW Max

· Package Options: SO, 0.6in and 0.3in DIPs(1)

APPLICATIONS

· Medical Instrumentation

· Data Acquisition Systems

· Robotics

· Industrial Control

· Test Equipment

· Digital Signal Processing

· DSP Servo Control

DESCRIPTION

The ADS774H is a 12-bit, successive-approximation

analog-to-digital converter (ADC) that uses an

innovative capacitor array (CDAC) implemented in

low-power CMOS technology. This device is a drop-in

replacement for the ADS774, with internal sampling, much lower power consumption, and the ability to

operate from a single +5V supply.

The ADS774H is complete with an internal clock,

microprocessor interface, three-state outputs, and

internal scaling resistors for input ranges of 0V to

+10V, 0V to +20V, ±5V, or ±10V. The maximum

throughput time is 8.5ms over the full operating

temperature range, including both acquisition and

conversion.

Complete user control over the internal sampling function facilitates elimination of external sample/hold

amplifiers in most existing designs.

The ADS774H requires +5V, with –15V optional. No

+15V supply is required. Packages include a 28-pin

SO, and 0.3in-wide or 0.6in-wide 28-pin DIPs(1).