The LM134/LM234/LM334 are 3-terminal adjustable current sources characterized by:an operating current range of 10000: 1an excellent current regulationa 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.

For the LM134/LM234/LM334, the voltage on the control pin is 64mV at +25°C and is directly proportional to the absolute temperature (°K). The simplest external resistor connection generates a current with approximately 0.33%/°C temperature dependence. Zero drift can be obtained by adding an additional resistor and a diode to the external circuit.

lm134 / lm234 / lm334是三端可調電流源的特點是：工作電流范圍10000：1良好的電流調整寬動態(tài)電壓范圍為1V T 10V

電流由一個外部電阻器確定，而不需要其他外部元件。

反向電壓20V只會畫幾個微安的電流。這使得電路作為一個整流器和交流應用的電流源。

為lm134 / lm234 / lm334，控制引腳上的電壓在±25°C 64mV是絕對溫度成正比（°K）。最簡單的外部電阻連接產生的電流約為0.33% /°C的溫度依賴性。可以通過增加一個額外的電阻和二極管的外部電路的零漂移。

Key Features

• Operates from 1V to 40V

• 0.02%/V current regulation

• Programmable from 1μA to 10mA

• ±3% initial accuracy

主要特點

工作在1V至40V

0.02% /五電流調節(jié)

可編程從1μ為10mA

3%初始精度