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[原创] Microchip MCP37220-200 14位ADC评估方案

关键词:模数转换器 ADC 通信技术 蜂窝基站 工业和消费类数据采集系统

时间:2015-05-29 10:19:21       作者:Microchip       来源:中电网

Microchip公司的MCP37220-200是单路200MSPS 14位ADC,内置了高阶数字抽取滤波器,增益和失调调整,取样速率200MSPS,SNR为67.8dBFS,SFDR为96dBc,工作电压1.2V,1.8V,满刻度输入1.8VP-P,模拟输入带宽650MHz,主要用在通信基础设备,微波数字无线电,蜂窝基站,雷达,工业和消费类数据采集系统和扫描仪和低功耗手持设备.本文介绍MCP37220-200主要特性, 功能框图,以及MCP37XX0-200评估板(ADM00652) 主要特性,电路图,材料清单和PCB设计图.

The MCP37220-200 is a single-channel 200 Msps 14-bit pipelined ADC, with built-in high-order digital decimation filters, gain and offset adjustment. The MCP37D20-200 is also a single-channel 200 Msps 14-bit pipelined ADC, with built-in digital down-conversion in addition to the features offered by the MCP37220-200.

Both devices feature harmonic distortion correction and DAC noise cancellation that enables high performance specifications with SNR of 67.8 dBFS (typical) and SFDR of 96 dBc (typical).

The output decimation filter option improves SNR performance up to 83.9 dBFS with the 512x decimation setting.

The digital down-conversion option in the MCP37D20-200 can be utilized with the decimation and quadrature output (I and Q data) options and offers great flexibility in digital communication system design, including cellular base-stations and narrow-band communication systems.
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