Flexible, 4 mA-to-20 mA Pressure Sensor Transmitter with Voltage or Current Drive (CN0295)
The circuit shown in Figure 1 is a flexible current transmitter that converts the differential voltage output from a pressure sensor to a 4 mA-to-20 mA current output.
The circuit is optimized for a wide variety of bridge-based voltage or current driven pressure sensors, utilizes only five active devices, and has a total unadjusted error of less than 1%. The power supply voltage can range from 7 V to 36 V depending on the component and sensor driver configuration.
The input of the circuit is protected for ESD and voltages beyond the supply rail, making it ideal for industrial applications.
- 4-20mA transmitter
- Voltage or current drive
- Optimized for pressure sensors
- Low Power
Схемы и диаграммы
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