TI AFE4110精度0.1度C数字温度计解决方案
TI公司的AFE4110是基于超低功耗MSP430 RISC处理器,配置有两个16位计时器,48段LCD驱动器,可编程模拟池,电源监视器和基准电压源,特别适合采用单颗SR60电池的低成本数字温度计,工作电压1.1V-1.55V,3mA 1.85V内部电荷泵用于外接EEPROM和内部LCD驱动器,工作时功耗45µA/MHz (1.55V),深度睡眠功耗小于0.4µA,主要用于数字温度计,计步器,温度调节器和其它手持设备.本文介绍了AFE4110主要特性,功能框图,AFE4110温度计演示板主要特性,电路图,材料清单和PCB元件布局图.
The Texas Instruments MSP430 family of low-power mixed signal ASSPs consists of many devices featuring different sets of peripherals targeted for various consumer medical applications. The AFE4110 CPU architecture is based on the popular ultra low power Texas Instruments MSP430 RISC processor.
The AFE4110 configuration with two 16-bit timers, integrated 48-segment LCD driver, programmable Analog Pool, supply voltage monitor and internal reference voltage source is particularly well suited for implementation of low cost digital thermometers operating from a single cell SR60 battery. The capability to correct the on chip high frequency oscillator output facilitates the generation and measurement of real time intervals. For many applications, this capability allows system designers to eliminate a clock crystal from the system BOM.
AFE4110主要特性:
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