LM136AH-2.5

Series:	--
Packaging:	Bulk
Part Status:	Active
Reference Type:	Shunt
Output Type:	Fixed
Voltage - Output (Min/Fixed):	2.49V
Current - Output:	10mA
Tolerance:	±1%
Temperature Coefficient:	--
Noise - 0.1Hz to 10Hz:	--
Noise - 10Hz to 10kHz:	--
Voltage - Input:	--
Current - Supply:	--
Current - Cathode:	400µA
Operating Temperature:	-55°C ~ 125°C (TA)
Mounting Type:	Through Hole
Package / Case:	TO-206AB, TO-46-3 Metal Can
Supplier Device Package:	TO-46-3
Base Part Number:	LM136

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Introduction

The LM136AH-2.5 is a voltage reference circuit that fits into a small package with low power dissipation. It is part of the wide range of voltage regulators manufactured by National Semiconductor Corporation, and it is capable of providing an accurate, stable and relatively low output voltage. It is a suitable choice for applications in computers, communications and other industries which require a stable reference voltage reference source.

Application Field

The LM136AH-2.5 voltage reference consists of an internally trimmed 2.5 volt reference source, driving two voltage comparators. These two comparators can be used to define two reference voltages, a high (2.5V) and a low (0.5V) one.The resistors and the capacitor can be adjusted to provide automatic DC voltage regulation from 0.2V to 12V. This type of voltage regulators is a very cost effective solution for small systems, and its low dissipation makes it suitable for battery powered applications.It is especially suitable for products that require a low cost, low noise, high accuracy, and fast transient performance. Some typical applications of the LM136AH-2.5 include linear post-regulators, active filters, transducer amplifiers, and computer systems and communications systems.

Working Principle

The LM136AH-2.5 voltage reference consists of an internally trimmed 2.5 volt reference source, driving two voltage comparators. The output voltage is adjusted by a potentiometer while the capacitor and resistor set are used to maintain the output during abrupt input voltage changes.The two voltage comparators take the 2.5V reference voltage and compare it with the output voltage of the regulator. The output from the comparators is used to control the resistance of an adjustable current source, which in turn regulates the output voltage. This regulates the output voltage within a certain range and ensures that the output voltage does not drop even when the input voltage changes drastically.

Conclusion

The LM136AH-2.5 is a useful voltage reference circuit that is capable of providing a stable and accurate voltage output. It is an ideal choice for cost effective and low noise applications such as linear post-regulators, active filters, transducer amplifiers, and computer systems and communications systems. The working principle of the voltage reference involves the use of two voltage comparators to compare the output voltage to the reference voltage and adjust the output voltage automatically in case of sudden input variations.

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