AD7657屬于集成電路（IC）的模數(shù)轉(zhuǎn)換器（ADC）。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD7657模數(shù)轉(zhuǎn)換器（ADC）模數(shù)轉(zhuǎn)換器（ADC、A/D 或 A 轉(zhuǎn) D）對模擬信號進(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。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。

GENERAL DESCRIPTION

The AD7656/AD7657/AD76581 contain six 16-/14-/12-bit, fast, low power, successive approximation ADCs all in the one package that is designed on the iCMOS? process (industrial CMOS). iCMOS is a process combining high voltage silicon with submicron CMOS and complementary bipolar technologies. It enables the development of a wide range of high performance analog ICs, capable of 33 V operation in a footprint that no previous generation of high voltage parts could achieve. Unlike analog ICs using conventional CMOS processes, iCMOS components can accept bipolar input signals while providing increased performance, which dramatically reduces power consumption and package size.

FEATURES

6 independent ADCs

True bipolar analog inputs

Pin-/software-selectable ranges: ±10 V, ±5 V

Fast throughput rate: 250 kSPS

iCMOS process technology

Low power 140 mW at 250 kSPS with 5 V supplies

Wide input bandwidth 86.5 dB SNR at 50 kHz input frequency

On-chip reference and reference buffers

Parallel, serial, and daisy-chain interface modes

High speed serial interface SPI-/QSPI?-/MICROWIRE?-/DSP-compatible

Standby mode: 100 μW maximum

64-lead LQFP

APPLICATIONS

Power line monitoring systems

Instrumentation and control systems

Multi-axis positioning systems