[原创] Maxim MAX11905 20位单路全差分SAR ADC解决方案

Maxim公司的MAX11905是20位1.6Msps单路全差分SAR ADC,具有极好静态和动态性能,SNR为98.3dB,THD为-123dB,INL为6 LSB,不丢失码20位分辨率.主要用在测试和测量,自动化测试设备(ATE),医疗仪表,过程控制和工业自动化,数据采集系统,通信设备和以电池为能源的设备.本文介绍了MAX11905优势和主要特性,框图,应用框图以及MAX11905差分评估板主要特性,电路图,材料清单和PCB设计图.

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 ℃ to +85 ℃ operating temperature range.

MAX11905优势和主要特性:

High DC/AC Accuracy Provides Better Measurement Quality 20-Bit Resolution with No Missing Codes ..

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