GENERAL DESCRIPTION

The main function of the SX8722 is to acquire signal from Wheatstone bridges or single ended sensors.

The input can be a pressure sensor, a GMR or AMR magnetic sensor, a chemical sensor, a thermistor or a mix of several of these sensors.

The SX8722 Sensor interface is totally configurable through an I2C compatible interface.

Several parameters are configurable through this interface such as alarms or signal post processing.

KEY PRODUCT FEATURES

◆ 16 + 10 bits differential acquisition

◆ Preamplifier programmable gain up to 1000

◆ Sensor offset compensation up to 15 times full scale of input signal

◆ 4 differential or 7 single ended signal inputs

◆ 2 differential reference inputs

◆ I2C compatible connection to application

◆ Internal RC and 32 kHz Oscillators

◆ Low power modes

- Sleep

- Shutdown

◆ 4 Full configuration pre selections including:

- ZoomingADC™ configuration

- 2 alarms with on & off thresholds

- Digital filtering

◆ I2C EEPROM interface

◆ Stand alone mode for alarm monitoring

◆ Clock out pin

◆ Calibration pin

◆ Reset pin

◆ Ready / Busy pin

APPLICATION

◆ Pressure sensing (industrial, altimeter, diving computer)

◆ Chemical sensing (monitoring, security)

◆ Magnetic sensing (compass)

SX8722属于集成电路（IC） > 传感器和检测器接口。Semtech Corporation制造生产的SX8722传感器和检测器接口该系列产品可执行信号调节、数据转换、激励生成和/或各种将传感器或变送器机构连接到主机设备所需的其他功能。示例包括用于 CCD 图像传感器的控制器、用于 4-20 mA 接口和类似应用的电流变送器、超声变送器前端、惠斯通电桥接口等。