LM134

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3 端子可调节电流源

产品详情

Iout/Iz (max) (mA) 0.01 Vin (min) (V) 0.8 Vin (max) (V) 40 Operating temperature range (°C) -55 to 125 Initial accuracy (max) (%) 3 Rating Military
Iout/Iz (max) (mA) 0.01 Vin (min) (V) 0.8 Vin (max) (V) 40 Operating temperature range (°C) -55 to 125 Initial accuracy (max) (%) 3 Rating Military
DIESALE (Y) See data sheet TO-CAN (NDV) 3 34.8704 mm² 6.41 x 5.44
  • Operates From 1V to 40V
  • 0.02%/V Current Regulation
  • Programmable From 1µA to 10mA
  • True 2-Terminal Operation
  • Available as Fully Specified Temperature Sensor
  • ±3% Initial Accuracy

All trademarks are the property of their respective owners.

  • Operates From 1V to 40V
  • 0.02%/V Current Regulation
  • Programmable From 1µA to 10mA
  • True 2-Terminal Operation
  • Available as Fully Specified Temperature Sensor
  • ±3% Initial Accuracy

All trademarks are the property of their respective owners.

The LM134/LM234/LM334 are 3-terminal adjustable current sources featuring 10,000:1 range in operating current, excellent current regulation and a wide dynamic voltage range of 1V to 40V. Current is established with one external resistor and no other parts are required. Initial current accuracy is ±3%. The LM134/LM234/LM334 are true floating current sources with no separate power supply connections. In addition, reverse applied voltages of up to 20V will draw only a few dozen microamperes of current, allowing the devices to act as both a rectifier and current source in AC applications.

The sense voltage used to establish operating current in the LM134 is 64mV at 25°C and is directly proportional to absolute temperature (°K). The simplest one external resistor connection, then, generates a current with ≈+0.33%/°C temperature dependence. Zero drift operation can be obtained by adding one extra resistor and a diode.

Applications for the current sources include bias networks, surge protection, low power reference, ramp generation, LED driver, and temperature sensing. The LM234-3 and LM234-6 are specified as true temperature sensors with ensured initial accuracy of ±3°C and ±6°C, respectively. These devices are ideal in remote sense applications because series resistance in long wire runs does not affect accuracy. In addition, only 2 wires are required.

The LM134 is specified over a temperature range of −55°C to +125°C, the LM234 from −25°C to +100°C and the LM334 from 0°C to +70°C. These devices are available in TO hermetic, TO-92 and SOIC-8 plastic packages.

The LM134/LM234/LM334 are 3-terminal adjustable current sources featuring 10,000:1 range in operating current, excellent current regulation and a wide dynamic voltage range of 1V to 40V. Current is established with one external resistor and no other parts are required. Initial current accuracy is ±3%. The LM134/LM234/LM334 are true floating current sources with no separate power supply connections. In addition, reverse applied voltages of up to 20V will draw only a few dozen microamperes of current, allowing the devices to act as both a rectifier and current source in AC applications.

The sense voltage used to establish operating current in the LM134 is 64mV at 25°C and is directly proportional to absolute temperature (°K). The simplest one external resistor connection, then, generates a current with ≈+0.33%/°C temperature dependence. Zero drift operation can be obtained by adding one extra resistor and a diode.

Applications for the current sources include bias networks, surge protection, low power reference, ramp generation, LED driver, and temperature sensing. The LM234-3 and LM234-6 are specified as true temperature sensors with ensured initial accuracy of ±3°C and ±6°C, respectively. These devices are ideal in remote sense applications because series resistance in long wire runs does not affect accuracy. In addition, only 2 wires are required.

The LM134 is specified over a temperature range of −55°C to +125°C, the LM234 from −25°C to +100°C and the LM334 from 0°C to +70°C. These devices are available in TO hermetic, TO-92 and SOIC-8 plastic packages.

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类型 标题 下载最新的英语版本 日期
* 数据表 LM134/LM234/LM334 3-Terminal Adjustable Current Sources 数据表 (Rev. E) 2013年 6月 20日
应用手册 Precision Current Sources and Sinks Using Voltage References 2020年 6月 30日
应用手册 AN-211 New Op Amp Ideas (Rev. A) 2013年 5月 6日
应用手册 LB-41 Precision Reference Uses Only Ten Microamperes (Rev. B) 2013年 5月 3日
应用手册 AN-460 LM34/LM35 Precision Monolithic Temperature Sensors (Rev. C) 2013年 5月 1日
更多文献资料 Die D/S LM134 MDC 3-Terminal Adj Current Source 2012年 9月 14日

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电流基准
LM134 3 端子可调节电流源 LM234 100°C 3 引脚可调节电流源 LM334 具有 0°C 至 70°C 工作温度范围的 3 引脚可调节电流源
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DIESALE (Y)
TO-CAN (NDV) 3 了解详情

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  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
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