LM234D

三端可调电流源 Three terminal adjustable current sources

Description

The LM134/LM234/LM334 are 3-terminal adjustable current sources characterized by:

■ an operating current range of 10000: 1

■ an excellent current regulation

■ a wide dynamic voltage range of 1V t 10V

The current is determined by an external resistor without requiring other external components.

Reverse voltages of up to 20V will only draw a current of several microamperes. This enables the circuit to operate as a rectifier and as a source of current in a.c. applications.

Features

■ Operates from 1V to 40V

■ 0.02%/V current regulation

■ Programmable from 1µA to 10mA

■ ±3% initial accuracy