Update: 01 October, 2023
The LM134/LM234/LM334 are 3-terminal adjustable current sources characterized by a operating current range of 10000:1, an excellent current regulation and a wide dynamic voltage range of 1V to 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 ≈ 0.33%/°C temperature dependence. Zero drift can be obtained by adding an additional resistor and a diode to the external circuit.
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MD5 Checksum: AB833FE0D105C4D7695B7A3247DA1865
Publication date: 09 May, 2012
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PDF Link: STMICROELECTRONICS - LM134 LM234 - LM334 THREE TERMINAL ADJUSTABLE CURRENT SOURCES handbook PDF