厂商：Freescale
类别：16位单片机
厂商：SGmicro
类别：音频放大器
厂商：Realtek
类别：PHYceivers
厂商：TDK
类别：脉冲变压器
厂商：Panasonic
类别：PhotoMOS(MOSFET输出光电耦合器)
厂商：Linear
类别：隔离型收发器模块
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特点1μA to 10mA Operation0.02%/V Regulation0.8V to 30V Operating VoltageCan Be Used as Linear Temperature SensorDraws No Reverse CurrentSupplied in Standard Transistor Packages典型应用典型应用描述Most H (Metal Can), J (Ceramic), and K (Metal Can) Packages from Linear Technology Are Now ObsoleteDownload Complete Datasheet for DetailsThe LM134 is a three-terminal current source designed to operate at current levels from 1μA to 10mA, as set by an external resistor. The device operates as a true two-terminal current source, requiring no extra power connections or input signals. Regulation is typically 0.02%/V and terminal-to-terminal voltage can range from 800mV to 40V.Because the operating current is directly proportional to absolute temperature in degrees Kelvin, the device will also find wide applications as a temperature sensor. The temperature dependence of the operating current is 0.336%/°C at room temperature. For example, a device operating at 298μA will have a temperature coefficient of 1μA/°C. The temperature dependence is extremely accurate and repeatable. Devices specified as temperature sensors in the 100μA to 1mA range are the LM134-3, LM234-3 and the LM134-6, LM234-6, with the dash numbers indicating ±3°C and ±6°C accuracies, respectively.If a zero temperature coefficient current source is required, this is easily achieved by adding a diode and a resistor.?