TSOP39138

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Sensing Distance:	45m
B.P.F. Center Frequency:	38.0kHz
Voltage - Supply:	2.5V ~ 5.5V
Current - Supply:	350µA
Orientation:	Side View
Mounting Type:	Through Hole
Operating Temperature:	--

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Introduction to TSOP39138

TSOP39138 is a type of infrared remote receiver integrated circuit (IC) developed by the company Vishay Intertechnology, Inc. This type of IC is mainly used in commercial remote-control systems devices used in household audio and video equipment, as well as in other types of consumer electronics. The TSOP39138 is designed to convert an incoming modulated infrared signal to the logic levels necessary for the system to control the device.

Application Field and Working Principle of TSOP39138

The TSOP39138 is primarily used in remote-control systems for consumer applications. It is designed to receive infrared modulated signals from remote controls and convert them into logic levels required by the device it is controlling. The TSOP39138 is a pin-compatible variant of the TSOP39125 and has similar features.This type of photo receiver is mainly used in the remote control applications due to its wide acceptance range, high output current, and low power consumption. The wide acceptance range of 39.125 kHz +/- 20% enables a receiver to accept different signal frequencies from the remote controls which are commonly available. The TSOP39138 is also well suited for infrared applications where shorter detection times are needed due to its fast response time of 200 μsec.The TSOP39138 consists of an oscillator, two NAND gates, two amplifiers, and two detectors. It is typically used with internal or external oscillator circuitry which converts the incoming modulated infrared signal into a square wave. The square wave is then amplified and detected by the IC’s two detectors, which produces narrow pulses when a transmitter is in close proximity. The NAND gates combine these pulses and produces a logic 0 to the output pin when a transmitter is in the field of view.

Conclusion

The TSOP39138 is an integrated circuit designed to convert incoming modulated infrared signals from remote controls into logic levels required for the device it is controlling. This type of photo receiver is mainly used in remote control applications due to its wide acceptance range, high output current, and low power consumption. By combining two detectors, two amplifiers, two NAND gates, and an oscillator, the TSOP39138 is able to detect the signal from a transmitter, convert it into the logic levels required, and produce a logic 0 to the output pin when a transmitter is in the field of view.

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