General Description
The LM136-2.5/LM236-2.5 and LM336-2.5 integrated circuits are precision 2.5V shunt regulator diodes. These
monolithic IC voltage references operate as a lowtemperature-coefficient 2.5V zener with 0.2? dynamic impedance. A third terminal on the LM136-2.5 allows the reference voltage and temperature coefficient to be trimmed
easily.
The LM136-2.5 series is useful as a precision 2.5V low
voltage reference for digital voltmeters, power supplies or op
amp circuitry. The 2.5V make it convenient to obtain a stable
reference from 5V logic supplies. Further, since the LM136-
2.5 operates as a shunt regulator, it can be used as either a
positive or negative voltage reference.
The LM136-2.5 is rated for operation over ?55?C to +125?C
while the LM236-2.5 is rated over a ?25?C to +85?C temperature range.
The LM336-2.5 is rated for operation over a 0?C to +70?C
temperature range. See the connection diagrams for available packages.
Features
n Low temperature coefficient
n Wide operating current of 400 ?A to 10 mA
n 0.2? dynamic impedance
n ?1% initial tolerance available
n Guaranteed temperature stability
n Easily trimmed for minimum temperature drift
n Fast turn-on