VISHAY TSOP2238 Infrared Receiver Module 38kHz

The VISHAY TSOP2238 Infrared Receiver Module 38kHz is a miniaturised infrared receiver designed for remote control systems, with a 38kHz carrier frequency. It integrates a PIN photodiode and a preamplifier within a single epoxy package fitted with an infrared filter, simplifying circuit design and saving board space. Its primary function is to receive and demodulate remote control signals, outputting a clean signal that can be interfaced directly with a microprocessor for decoding.

Key Features

• Combines the photo detector and preamplifier in one compact package
• Internal filter for PCM frequency
• Improved shielding against electromagnetic interference (EMI)
• Enhanced immunity against ambient light, reducing the chance of false triggering
• Transmission range of up to 45 metres
• Automatic gain control (AGC2) for consistent performance

Technical Specifications

• Carrier frequency: 38kHz
• Supply voltage: 2.5V to 5.5V
• Supply current: 950µA
• Directivity: 45°
• Operating temperature: -25°C to 85°C
• Detection sensitivity: 0.12mW/m²
• Mounting: Side view through-hole package
• Dimensions: 3.3 (width) x 1.5 (depth) x 4.3 (height)
• Weight: 0.485 gm

Compatibility and Applications

The module supports decoding for popular remote control protocols including RC-5, RC-6, Panasonic, NEC, Sharp, r-step, and Thomson RCA. It is designed for remote control applications in consumer electronics and industrial settings. Its 45° directivity provides a suitable reception angle, and its low 950µA supply current supports energy-efficient designs.