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LM134

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3 端子可調(diào)節(jié)電流源

產(chǎn)品詳情

Rating Military Iout/Iz (max) (mA) 10 Vin (min) (V) 0.8 Vin (max) (V) 40 Initial accuracy (max) (%) 3 Operating temperature range (°C) -55 to 125
Rating Military Iout/Iz (max) (mA) 10 Vin (min) (V) 0.8 Vin (max) (V) 40 Initial accuracy (max) (%) 3 Operating temperature range (°C) -55 to 125
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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類型 標(biāo)題 下載最新的英語版本 日期
* 數(shù)據(jù)表 LM134/LM234/LM334 3-Terminal Adjustable Current Sources 數(shù)據(jù)表 (Rev. E) 2013年 6月 20日
應(yīng)用手冊 Precision Current Sources and Sinks Using Voltage References 2020年 6月 30日
應(yīng)用手冊 AN-211 New Op Amp Ideas (Rev. A) 2013年 5月 6日
應(yīng)用手冊 LB-41 Precision Reference Uses Only Ten Microamperes (Rev. B) 2013年 5月 3日
應(yīng)用手冊 AN-460 LM34/LM35 Precision Monolithic Temperature Sensors (Rev. C) 2013年 5月 1日
更多文獻(xiàn)資料 Die D/S LM134 MDC 3-Terminal Adj Current Source 2012年 9月 14日

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產(chǎn)品
裸片和晶圓服務(wù)
LM336-2.5-MIL — 并聯(lián)電壓基準(zhǔn)
并聯(lián)電壓基準(zhǔn)
ATL431 — 2.5V 低 IQ 可調(diào)節(jié)精密并聯(lián)穩(wěn)壓器 LM136-2.5-N — 電壓基準(zhǔn)二極管 LM136-5.0 — 5.0V 基準(zhǔn)二極管 LM136-5.0QML — 5.0V 基準(zhǔn)二極管 LM136A-2.5QML — 2.5V 基準(zhǔn)二極管 LM136A-2.5QML-SP — 耐輻射 QMLV、2.5V 并聯(lián)電壓基準(zhǔn) LM136A-5.0QML — 5.0V 基準(zhǔn)二極管 LM185-1.2-N — 微功耗電壓基準(zhǔn)二極管 LM185-1.2QML — 微功耗電壓基準(zhǔn)二極管 LM185-1.2QML-SP — 耐輻射 QMLV、1.2V 并聯(lián)電壓基準(zhǔn) LM185-2.5-N — 微功耗電壓基準(zhǔn)二極管 LM185-2.5QML — 微功耗電壓基準(zhǔn)二極管 LM185-2.5QML-SP — 航天級 QMLV 2.5V 并聯(lián)電壓基準(zhǔn) LM185-ADJ — 可調(diào)節(jié)微功耗電壓基準(zhǔn) LM185QML — 可調(diào)節(jié)微功耗電壓基準(zhǔn) LM285-1.2 — 具有 -40°C 至 +85°C 工作溫度范圍的 1.235V 微功耗基準(zhǔn)電壓 LM285-1.2-N — 溫度范圍為 -40°C 至 +85°C 的 1.235V 微功耗基準(zhǔn)電壓二極管 LM285-2.5 — 具有 -40°C 至 +85°C 工作溫度范圍的 2.5V 微功耗基準(zhǔn)電壓 LM285-2.5-N — 溫度范圍為 -40°C 至 +85°C 的 2.5V 微功耗基準(zhǔn)電壓二極管 LM285-ADJ — 可調(diào)節(jié)、85°C、微功耗電壓基準(zhǔn) LM336-2.5 — 具有 0°C 至 70°C 工作溫度范圍的 2.5V 集成參考電路 LM336-2.5-N — 電壓基準(zhǔn)二極管 LM336-5.0 — 5V 基準(zhǔn)電壓二極管 LM385-1.2 — 具有 0°C 至 70°C 工作溫度范圍的 1.235V、2%、微功耗基準(zhǔn)電壓 LM385-1.2-MIL — 微功耗電壓基準(zhǔn)源 LM385-1.2-N — 溫度范圍為 0°C 至 70°C 的 1.235V 微功耗基準(zhǔn)電壓二極管 LM385-2.5 — 2.5V、2%、70°C、微功耗基準(zhǔn)電壓 LM385-2.5-N — 溫度范圍為 0°C 至 70°C 的 2.5V 微功耗基準(zhǔn)電壓二極管 LM385-ADJ — 可調(diào)節(jié)、70°C、微功耗電壓基準(zhǔn) LM4030 — 超高精度并聯(lián)電壓基準(zhǔn) LM4040 — 固定和電壓、45μA、精密微功耗并聯(lián)電壓基準(zhǔn) LM4040-N — 100ppm/°C 精密微功耗并聯(lián)電壓基準(zhǔn) LM4040-N-Q1 — 汽車類 100ppm/°C 精密微功耗并聯(lián)電壓基準(zhǔn) LM4041-N — 固定和可調(diào)節(jié)、45μA、精密微功耗并聯(lián)電壓基準(zhǔn) LM4041-N-Q1 — 汽車類精密微功耗并聯(lián)電壓基準(zhǔn) LM4050-N — 50ppm/°C 精密微功耗并聯(lián)電壓基準(zhǔn) LM4050-N-Q1 — 汽車類 50ppm/°C 精密微功耗并聯(lián)電壓基準(zhǔn) LM4050QML-SP — 耐輻射 QMLV、2.5V 或 5V 并聯(lián)電壓基準(zhǔn) LM4051-N — 固定和可調(diào)節(jié)、精密微功耗并聯(lián)電壓基準(zhǔn) LM431 — 精度為 2%、1% 或 0.5% 的可調(diào)精密齊納并聯(lián)穩(wěn)壓器 LM4431 — 微功耗并聯(lián)電壓基準(zhǔn) LMV431 — 1.5%、低電壓 (1.24V) 可調(diào)節(jié)精密并聯(lián)穩(wěn)壓器 LMV431A — 1%、低電壓 (1.24V) 可調(diào)節(jié)精密并聯(lián)穩(wěn)壓器 LMV431B — 0.5%、低電壓 (1.24V) 可調(diào)節(jié)精密并聯(lián)穩(wěn)壓器
電流基準(zhǔn)和電流源
LM134 — 3 端子可調(diào)節(jié)電流源 LM234 — 100°C 3 引腳可調(diào)節(jié)電流源 LM334 — 具有 0°C 至 70°C 工作溫度范圍的 3 引腳可調(diào)節(jié)電流源
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