TSOP33133

Series:	TSOP33
Packaging:	Bulk
Part Status:	Active
Sensing Distance:	45m
B.P.F. Center Frequency:	33.0kHz
Voltage - Supply:	2.5V ~ 5.5V
Current - Supply:	450µA
Orientation:	Side View
Mounting Type:	Through Hole
Operating Temperature:	-25°C ~ 85°C (TA)

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TSOP33133 Application Field and Working Principle

Remote receivers, like the TSOP33133, are optical sensors used to sense and receive signals from remote controls. These sensors are widely used, especially for consumer electronic applications such as TV remotes, garage door openers and remote controls for toys or video games. The TSOP33133 is a surface mount type optical receiver targeted to receive signals from infrared remote controls with a carrier frequency of 33KHz. This device is capable of operating from 1.5V supply voltage with low power consumption, and is packaged in 16-pin flat packages.

The TSOP33133 is a near infrared receiver, meaning that it only senses near infrared light signals and ignores visible light. The device consists of a PIN diode and preamplifier, which are embedded into an epoxy package with an infrared filter to pass only the desired signal spectrum. Its receiver section provides a gain control to adjust the amplitude of signal peaks to a suitable output level. The TSOP33133 even has an internal output current limiting for more efficient operation. When used in a circuit, the TSOP33133\'s output is connected to a processor or other logic circuit, which will interpret the transmitted codes from the remote control.

The TSOP33133\'s working principle is relatively simple. When a signal is received by the sensor\'s PIN diode, it is amplified by the preamplifier and passed to the receiver section. Here, an amplitude comparison between the received signal and a reference level feedback is used to detect a signal peak. If a peak is detected, the output of the TSOP33133 will go low momentarily. This action is repeated during the whole duration of signal transmission, thus converting the sequence of signal pulses into a digital output. The output can then be used by the processing logic for further actions.

In conclusion, the TSOP33133 is a widely used receiver target for remote control signals of 33KHz frequency and near infrared wavelength. The device includes a PIN diode and preamplifier embedded in an epoxy packaging with an infrared filter, and provides a gain control and output current limiting for more efficient operation. The device works by receiving a signal, comparing its amplitude to a reference level feedback for a peak detection, and then sending out a digital output for further interpretation. The TSOP33133 is an indispensable component in many consumer electronic applications requiring remote control.

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