ADS5421中文資料14 位、40MSPS 模數(shù)轉(zhuǎn)換器 (ADC)數(shù)據(jù)手冊TI規(guī)格書

描述 Description

The ADS5421 is a high-dynamic range 14-bit, 40MHz, pipelined Analog-to-Digital Converter (ADC). It includes a high-bandwidth linear track-and-hold amplifier that gives excellent spurious performance up to and beyond the Nyquist rate. The clock input can accept a low-level differential sine wave or square wave signal down to 0.5VPP, further improving the Signal-to-Noise Ratio (SNR) performance.

The ADS5421 has a 4VPP differential input range (2VPP ? 2 inputs) for optimum Spurious-Free Dynamic Range (SFDR). The differential operation gives the lowest even-order harmonic components. A lower input voltage can also be selected using the internal references, further optimizing SFDR.

The ADS5421 is available in a small LQFP-64 package.

特性 Features

? HIGH DYNAMIC RANGE: ???High SFDR: 83dB at 10MHz fIN ???High SNR: 75dB at 10MHz fIN
? ON-BOARD TRACK-AND-HOLD: ???Differential Inputs ???Selectable Full-Scale Input Range
? LOW POWER: 850mW
? FLEXIBLE CLOCKING: ???Differential or Single-Ended ???Accepts Sine or Square Wave Clocking Down to 0.5VPP ???Variable Threshold Level
? APPLICATIONS
? COMMUNICATIONS RECEIVERS
? TEST INSTRUMENTATION
? PROFESSIONAL CCD IMAGING

簡介

ADS5421屬于集成電路（IC）的模數(shù)轉(zhuǎn)換器（ADC）。由TI制造生產(chǎn)的ADS5421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。