TSOP38438

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Optical sensors utilize the optical transmission of information for the detection of objects. Photo detectors, such as TSOP38438, are used to detect objects that emit light. Remote receivers are specifically designed to detect signals from remote controls. The TSOP38438 is a widely used photo detector and remote receiver.

The TSOP38438 application field is largely dependent on its remittance frequency and sensitivity.The frequency of its reception ranges from 38 kHz to 56 kHz, making it suitable for remote control devices, as its frequency is compatible with most infrared (IR) remote controls. Part of the device’s appeal is its very low current consumption of only 6 μA; most competiting devices require more than 15 μA at comparable sensitivity. In addition, the TSOP38438 has a low forward current of only 800 nA and high reverse voltage rating of 35V, making it ideal for applications requiring low power and long-term reliability. The device’s relatively low cost of around $1 USD also makes it one of the most popular choices for remote receivers.

The TSOP38438 working principle is relatively simple and is based on the photo diode concept. The device consists of an infrared-sensitive photodiode combined with an amplifier and a noise filter. An infrared signal is received by the device’s photodiodes, transforming the power of the incoming signal into current. This amplified current is then passed through the noise filter to eliminate any interference, and an output signal of 38 kHz is generated. This output signal undergoes a threshold comparison, which means the output signal is enabled only when the received signal is detected above the lower threshold of the device. Once the received signal passes the threshold, it passes the signal’s digital properties to the amplifier, which amplifies it, and an output signal with a constant amplitude is sent to the receiving circuit.

With its fast response time, low current consumption, low forward current, high reverse voltage, and low price, the TSOP38438 is an ideal choice for most remote receivers and photo detectors. Due to its wide range of applications, this device can be used for a variety of purposes, such as in home entertainment systems, industrial automation, intelligent building, automotive safety systems, and retail control applications.

The specific data is subject to PDF, and the above content is for reference