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Maxim产品 - MAX1422介绍

MAX1422 - 12位、20Msps、+3.3V、低功耗ADC，内置电压基准

MAX1422是Maxim美信半导体公司的一款数据转换器和采样-保持电路产品，MAX1422是12位、20Msps、+3.3V、低功耗ADC，内置电压基准，本站介绍了MAX1422的封装应用图解、特点和优点、功能等，并给出了与MAX1422相关的Maxim元器件型号供参考。

MAX1422 - 12位、20Msps、+3.3V、低功耗ADC，内置电压基准 - 数据转换器和采样-保持电路 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX1422 3.3V, 12-bit analog-to-digital converter(ADC) features a fully differential input, pipelined, 12-stage ADC architecture with wideband track-and-hold(T/H) and digital error correction incorporating a fully-differentialsignal path. The MAX1422 is optimized for lowpower,high dynamic performance applications inimaging and digital communications. The converteroperates from a single 3.3V supply, consuming only137mW while delivering a 67dB (typ) signal-to-noiseratio (SNR) at a 5MHz input frequency and a 20Mspssampling frequency. The fully-differential input stagehas a small signal -3dB bandwidth of 400MHz and maybe operated with single-ended inputs.

An internal 2.048V precision bandgap reference setsthe ADCs full-scale range. A flexible reference structureaccommodates an internally or externally appliedbuffered or unbuffered reference for applicationsrequiring increased accuracy or a different input voltagerange.

In addition to low operating power, the MAX1422 featurestwo power-down modes, a reference power-down, and ashutdown mode. In reference power-down, the internalbandgap reference is deactivated, resulting in a 2mA(typ) supply current reduction. For idle periods, a fullshutdown mode is available to maximize power savings.

The MAX1422 provides parallel, offset binary, CMOS-compatiblethree-state outputs.

The MAX1422 is available in a 7mm x 7mm x 1.4mm,48-pin TQFP package and is specified over the commercial(0°C to +70°C) and extended industrial (-40°Cto +85°C) temperature ranges.

Pin-compatible higher-speed versions of the MAX1422are also available. Please refer to the MAX1421 datasheet for 40Msps and the MAX1420 data sheet for60Msps.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Single 3.3V Power Supply
  • 67dB SNR at fIN = 5MHz
  • Internal 2.048V Precision Bandgap Reference
  • Differential Wideband Input T/H Amplifier
  • Power-Down Modes
  • 130mW (Reference Shutdown Mode)
  • 10µW (Shutdown Mode)
  • Space-Saving 48-Pin TQFP Package
    • 热门应用
  • CCD像素处理
  • 数据采集
  • 中频与基带数字化
  • 医疗超声成像
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