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(diào)電流源的特點(diǎn)是：工作電流范圍10000：1良好的電流調(diào)整寬動(dòng)態(tài)電壓范圍為1V T 10V

電流由一個(gè)外部電阻器確定，而不需要其他外部元件。

反向電壓20V只會(huì)畫幾個(gè)微安的電流。這使得電路作為一個(gè)整流器和交流應(yīng)用的電流源。

為lm134 / lm234 / lm334，控制引腳上的電壓在±25°C 64mV是絕對(duì)溫度成正比（°K）。最簡(jiǎn)單的外部電阻連接產(chǎn)生的電流約為0.33% /°C的溫度依賴性?？梢酝ㄟ^增加一個(gè)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(diǎn)

工作在1V至40V

0.02% /五電流調(diào)節(jié)

可編程從1μ為10mA

3%初始精度