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MAX189：+5V、低功耗、12位串行ADC

对于3V应用，请参考MAX1240

The MAX187/MAX189 serial 12-bit analog-to-digital converters (ADCs) operate from a single +5V supply and accept a 0 to 5V analog input. Both parts feature an 8.5µs successive-approximation ADC, a fast track/hold (1.5µs), an on-chip clock, and a high-speed 3-wire serial interface. The MAX187/MAX189 digitize signals at a 75ksps throughput rate. An external clock accesses data from the interface, which communicates without external hardware to most digital signal processors and microcontrollers. The interface is compatible with SPI, QSPI™, and MICROWIRE®. The MAX187 has an on-chip buffered reference, and the MAX189 requires an external reference. Both the MAX187 and MAX189 save space with 8-pin PDIP and 16-pin SO packages. Power consumption is 7.5mW and reduces to only 10µW in shutdown. Excellent AC characteristics and very low power consumption combined with ease of use and small package size make these converters ideal for remote DSP and sensor applications, or for circuits where power consumption and space are crucial.

关键特性 12-Bit Resolution ±½ LSB Integral Nonlinearity (MAX187A/MAX189A) Internal Track/Hold, 75kHz Sampling Rate Single +5V Operation Low Power 2µA Shutdown Current 1.5mA Operating Current Internal 4.096V Buffered Reference (MAX187) 3-Wire Serial Interface, Compatible with SPI, QSPI, and MICROWIRE Small-Footprint 8-Pin PDIP and 16-Pin SO

MAX187、MAX189：功能框图 应用 高精度过程控制 隔离型数据采集 便携式数据记录 远端数字信号处理

数据手册DataSheet

关键参数

开发工具

• MAX187EVKIT

质量和环境数据

• MAX189.pdf

相关产品

• MAX1272：带故障保护的12位ADC，具有软件可选的输入范围
• MAX1240：+2.7V、低功耗、12位串行ADC，8引脚SO封装
• MAX1241：+2.7V、低功耗、12位串行ADC，8引脚SO封装

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