GENERAL DESCRIPTION

The AD7851 is a high speed, 14-bit ADC that operates from a single 5 V power supply. The ADC powers up with a set of default conditions at which time it can be operated as a read-only ADC. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature and has a number of power-down options for low power applications.

FEATURES

Single 5 V Supply

333 kSPS Throughput Rate/
±2 LSB DNL—A Grade

285 kSPS Throughput Rate/
±1 LSB DNL—K Grade

A and K Grades Guaranteed to 125°C/238 kSPS Throughput Rate

Pseudo-Differential Input with Two Input Ranges

System and Self-Calibration with Autocalibration on Power-Up

Read/Write Capability of Calibration Data

Low Power: 60 mW Typ

Power-Down Mode: 5 μW Typ Power Consumption

Flexible Serial Interface: 8051/SPI?/QSPI?/μP Compatible

24-Lead PDIP, SOIC, and SSOP Packages

APPLICATIONS

Digital Signal Processing

Speech Recognition and Synthesis

Spectrum Analysis

DSP Servo Control

Instrumentation and Control Systems

High Speed Modems

Automotive

AD7851屬于集成電路（IC） > 模數(shù)轉(zhuǎn)換器（ADC）。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD7851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、SAR、三角積分、兩步式）進(jìn)行選擇。