[原创] Maxim MAX11950 20位1.6Msps全差分SAR ADC解决方案

Maxim公司的MAX11950是20位1.6Msps单路全差分SAR ADC,提供极好的静态和动态性能以及功耗性能,SNR=98.3dB,THD=-123dB,保证20位分辨率而不丢失码和6 LSB INL,器件具有SPI兼容的串口,主要用在测试测量,自动测量设备(ATE),医疗仪器,过程控制和工业自动化,数据采集系统,通信设备以及以电池为电源的设备.本文介绍了MAX11905主要优势和特性,功能框图, 单极和双极单端输入电路图, MAX11905差分评估板主要特性, 系统框图,电路图和材料清单以及PCB元件布局图.

The MAX11905 is a 20-bit, 1.6Msps, single-channel, fully differential SAR ADC with internal reference buffers. The MAX11905 provides excellent static and dynamic perfor­mance with best-in-class power consumption that directly scales with throughput. The device has a unipolar differ­ential ±VREF input range. Supplies include a 3.3V supply for the reference buffers, a 1.8V analog supply, a 1.8V digital supply, and a 1.5V to 3.6V digital interface supply.

This ADC achieves 98.3dB SNR and -123dB THD, guar­antees 20-bit resolution with no-missing codes and 6 LSB INL (max).

The MAX11905 communicates data using a SPI-compatible serial interface. The MAX11905 is offered in a 20-pin, 4mm x 4mm, TQFN package and is specified over the -40°C to +85°C operating temperature range.

MAX11905主要优势和特性:
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