[CN0151] Build a programmable current source with DAC, op amp, and MOSFET by zrk787
[CN0151] Build a programmable current source using DACs, operational amplifiers, and MOSFETs
Circuit function and advantage
Digitally controlled current sources are critical in many applications such as power management, solenoid valve control, motor control, impedance measurement, sensor excitation, and pulse oximetry.
This article describes three current sources that use DACs, op amps, and MOSFET transistors to support serial interface digital control.
