TI PGA308模拟传感器信号调理方案

TI公司的PGA308是可编程的模拟传感器信号调理控制器,能放大传感器信号和数字校准失调和增益.校准通过数字的One-Wire, UART兼容的接口进行.片内有七组OTP存储器,用来存储增益和失调校准参数.器件工作电压从+2.7V 到+5.5V.主要应用在桥式传感器,遥控4-20mA发送器,应力,负荷和称重仪以北及汽车电子传感器.本文介绍了PGA308的主要特性, 详细方框图, 典型的三线应用电路,测试板方框图以及PGA308EVM评估板方框图, 电路图和评估板材料清单.

The PGA308 is a programmable analog sensor signal conditioner. The analog signal path amplifies the sensor signal and provides digital calibration for offset and gain. Calibration is done via the 1W pin, a digital One-Wire, UART-compatible interface. For three-terminal sensor modules, 1W may be connected to VOUT and the assembly programmed through the VOUT pin. Gain and offset calibration parameters are stored onboard in seven banks of one-time programmable (OTP) memory. The power-on reset (POR) OTP bank may be programmed a total of four times.
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