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10位、20Msps ADC

低功耗、低失真、10位ADC,提供61dB SNR

产品详情

主要特征

应用/用途

简化框图

技术文档

数据资料 10位、20Msps ADC Aug 02, 2011
设计指南 Understanding Pipelined ADCs
应用笔记 Understanding Pipelined ADCs

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主要特征

  • Differential Inputs for High Common-Mode Noise Rejection
  • Signal-to-Noise Ratio
    • 61dB (at fIN = 2MHz)
    • 59.3dB (at fIN = 10MHz)
  • Internal +2.5V Reference
  • 150MHz Input Bandwidth
  • Wide ±2V Input Range
  • Low Power Consumption: 172mW
  • Separate Digital Supply Input for 3V Logic Compatibility
  • Single +5V Supply Operation Possible

应用/用途

  • CCD像素处理
  • 中频与基带数字化
  • IR焦平面矩阵
  • 医疗超声成像
  • 雷达
  • 机顶盒

描述

The MAX1425 10-bit, monolithic analog-to-digital converter (ADC) is capable of a 20Msps sampling rate. This device features an internal track-and-hold (T/H) amplifier for excellent dynamic performance; at the same time, it minimizes the number of external components. Low input capacitance of only 8pF minimizes input drive requirements. A wide input bandwidth (up to 150MHz) makes this device suitable for digital RF/IF downconverter applications employing undersampling techniques.

The MAX1425 employs a differential pipelined architecture with a wideband T/H amplifier to maximize throughput while limiting power consumption to only 172mW. The MAX1425 generates an internal +2.5V reference that supplies three additional reference voltages (+3.25V, +2.25V, and +1.25V). These reference voltages provide a differential input range of +2V to -2V. The analog inputs are biased internally to correct the DC level, eliminating the need for external biasing on AC-coupled applications.

A separate +3V digital logic supply input allows for separation of digital and analog circuitry. The output data is in two's complement format. The MAX1425 is available in the space-saving 28-pin SSOP package. For a pin-compatible version at a lower data rate, refer to the MAX1426 data sheet. For a higher data rate, refer to the MAX1424 data sheet.

简化框图

MAX1425:功能框图 MAX1425:功能框图 Zoom icon

技术文档

数据资料 10位、20Msps ADC Aug 02, 2011
设计指南 Understanding Pipelined ADCs
应用笔记 Understanding Pipelined ADCs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心