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MAX145：+2.7V、低功耗、2通道、108ksps、串行12位ADC，8引脚µMAX封装

The MAX144/MAX145 low-power, 12-bit analog-to-digital converters (ADCs) are available in 8-pin µMAX® and DIP packages. Both devices operate with a single +2.7V to +5.25V supply and feature a 7.4µs successive- approximation ADC, automatic power-down, fast wake-up (2.5µs), an on-chip clock, and a high-speed, 3-wire serial interface. Power consumption is only 3.2mW (VDD = +3.6V) at the maximum sampling rate of 108ksps. At slower throughput rates, the automatic shutdown (0.2µA) further reduces power consumption. The MAX144 provides 2-channel, single-ended operation and accepts input signals from 0 to VREF. The MAX145 accepts pseudo-differential inputs ranging from 0 to VREF. An external clock accesses data-through the 3-wire serial interface, which is SPI™, QSPI™, and MICROWIRE™-compatible. Excellent dynamic performance and low power, combined with ease of use and small package size, make these converters ideal for battery-powered and data-acquisition applications, or for other circuits with demanding power-consumption and space requirements. For pin-compatible 10-bit ADCs, see the MAX157 and MAX159 data sheets.

关键特性 Single-Supply Operation (+2.7V to +5.25V) Two Single-Ended Channels (MAX144) One Pseudo-Differential Channel (MAX145) Low Power 0.9mA (108ksps, +3V Supply) 100µA (10ksps, +3V Supply) 10µA (1ksps, +3V Supply) 0.2µA (Power-Down Mode) Internal Track/Hold 108ksps Sampling Rate SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial Interface Space-Saving 8-Pin µMAX Package Pin-Compatible 10-Bit Versions Available

MAX144、MAX145：引脚配置 应用 电池供电应用 仪表 隔离型数据采集 医疗仪器 便携式数据记录 过程控制监视 系统监控 测试设备

数据手册DataSheet

关键参数

质量和环境数据

• MAX145.pdf

相关产品

• MAX1329：12/16位DAS，具有ADC、DAC、DPIO、APIO、基准、电压监测器和温度传感器
• MAX1393：1.5V至3.6V、312.5ksps、单通道真差分/双通道单端、12位SAR ADC
• MAX1288：150ksps、12位、双通道单端及单通道真差分ADC
• MAX1284：400ksps/300ksps、单电源、低功耗、串行12位ADC，内置电压基准
• MAX157：+2.7V、低功耗、2通道、108ksps、串行10位ADC，8引脚µMAX封装
• MAX159：+2.7V、低功耗、2通道、108ksps、串行10位ADC，8引脚µMAX封装
• MAX1330：12/16位DAS，具有ADC、DAC、DPIO、APIO、基准、电压监测器和温度传感器

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