Maxim MAX1240低功耗12位模数转换器(ADC)解决方案
摘要: Maxim公司的MAX1240/MAX1241是低功耗12位模数转换器(ADC),8引脚封装, MAX1240工作电压+2.7V到+3.6V,内部基准电压2.5V;MAX1241工作电压2.7V-5.25V.12位分辨率, SPI/QSPI/MICROWIRE三线串行接口,主要用在电池供电的系统,手持数据记录和隔离数据采集,过程控制和仪表.本文介绍了MAX1240/MAX1241主要特性,框图,以及评估板MAX1240 EVK主要特性,材料清单和PCB设计图.
The MAX1240/MAX1241 low-power, 12-bit analog-to digital converters (ADCs) are available in 8-pin packages.
The MAX1240 operates with a single +2.7V to +3.6V supply, and the MAX1241 operates with a single +2.7V to +5.25V supply. Both devices feature a 7.5μs successive-approximation ADC, a fast track/hold (1.5μs), an on-chip clock, and a high-speed, 3-wire serial interface.
Power consumption is only 37mW (VDD = 3V) at the 73ksps maximum sampling speed. A 2μA shutdown mode reduces power at slower throughput rates.
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