The TSOP1738 is an IR receiver module tuned to a carrier frequency of 38kHz. Unlike a standard photodiode, the TSOP1738 has an internal demodulator, preamplifier, and bandpass filter. This means it only responds to IR signals modulated at 38kHz, making it immune to ambient light interference from sources like sunlight or room lighting.

Key Features:

Copy both the .LIB and .IDX files (if available) into the above folder.

This paper examines the TSOP1738 infrared (IR) receiver: its electrical/optical characteristics, timing and demodulation behavior, noise sources, and how to model it for circuit simulation. It then describes creating and using a Proteus-compatible library part (symbol + footprint + behavioral model) so designers can validate IR remote receiver interfaces in mixed-signal simulations.

Infrared (IR) communication is a staple in embedded systems projects, from remote-controlled cars to home automation systems. The heart of most IR receiver circuits is the TSOP1738, a standard IR receiver module from Vishay. However, for electronics students and engineers using Proteus Design Suite, simulating this component can be a major hurdle. The standard Proteus library often lacks specific breakout boards for IR receivers, leading to frustration when trying to visualize a 38kHz signal.

This guide covers everything you need to know about the TSOP1738 Proteus library, including why you need it, how to download and install it, and how to properly set up the simulation to ensure your virtual IR remote actually works.

Some Proteus enthusiasts use the SFH5110 or TFMS5360 models (similar pinout and function). Tweak the frequency parameter to 38 kHz.

Before you simulate, you need to understand the real component. The TSOP1738 is a miniaturized IR receiver with a built-in photodetector, preamplifier, and demodulator. Its key features include: