BUY LM334Z https://www.utsource.net/itm/p/1331331.html
Constant Current Source and Temperature Sensor
Description: The LM334Z is a three-terminal adjustable current source from Texas Instruments. Features: Output current range of 1.2 mA to 100 mA Output voltage range of 0.2 V to 1.2 V Low temperature coefficient High accuracy Low output impedance Low quiescent current Low cost TO-92 package Application: The LM334Z is used in many applications such as current sources, current mirrors, and temperature compensation circuits. It can also be used in battery-powered systems and portable applications. (For reference only)