VS1838B TSOP Infrared Receiver Module

VS1838B TSOP Infrared Receiver Module is a high-sensitivity miniaturized receiver for infrared remote control systems that operates at a carrier frequency of 38 kHz. This specialized component integrates a PIN photodiode and a preamplifier IC into a single package, which effectively filters out ambient light interference to ensure reliable data reception. Consequently, it serves as the primary interface for decoding signals from standard handheld IR remote controls. The internal shield design protects the module against electromagnetic interference (EMI). Furthermore, its low power consumption and wide supply voltage range make it compatible with 3.3 V and 5 V microcontroller platforms. Therefore, you can easily integrate this module into consumer electronics and DIY robotics projects to implement wireless control capabilities.

Key Features:

• High Sensitivity: The module detects infrared signals over long distances, providing a reliable range for typical indoor environments.
• Built-in Filter: It features an internal PCM frequency filter, which successfully blocks interference from sunlight and fluorescent lamps.
• TTL and CMOS Compatibility: The output signal directly interfaces with standard logic levels, requiring no additional level-shifting components.
• EMI Shielding: An integrated metal casing provides superior protection against electrical noise and surrounding wireless signals.
• Wide Viewing Angle: The design allows for a large reception angle, ensuring the device captures signals even when the remote is not perfectly aligned.

Technical Specifications:

• Carrier Frequency: 38.0 kHz
• Supply Voltage (V_CC): 2.7 V to 5.5 V
• Operating Current: ≈ 0.5 mA to 1.5 mA
• Reception Distance: Up to 18 meters (typical)
• Reception Angle: ±45°
• Low Level Output Voltage (V_OL): ≤ 0.5 V
• High Level Output Voltage (V_OH): ≥ V_CC − 0.5 V
• Center Frequency Accuracy: ±2%

Mechanical Specifications:

• Package Type: TSOP (Through-Hole Package)
• Shielding: Tin-plated internal/external metal shield
• Lead Finish: Lead-free (RoHS compliant)
• Durability: Designed for high resistance to mechanical stress and vibration.

Dimensions:

• Body Width: ≈ 6.0 mm
• Body Height: ≈ 7.0 mm
• Body Depth: ≈ 5.0 mm
• Lead Length: ≈ 22.0 mm
• Pin Pitch: 2.54 mm (Standard)

Pinout and Wiring:

• Pin 1 (OUT): Connect to the digital input pin of your microcontroller (e.g., Arduino Pin 11) for signal decoding.
• Pin 2 (GND): Connect to the system ground (0 V).
• Pin 3 (VCC): Connect to a 3.3 V or 5 V power supply.
• Wiring Note: However, for optimal noise reduction, you should place a 100 Ω resistor in series with VCC and a 4.7 μF capacitor between VCC and GND pins.

Datasheet Reference:

• Download VS1838B IR Receiver Datasheet

Commonly Used in:

• Consumer Electronics: Acting as the receiver for TVs, air conditioners, and DVD players.
• Microcontroller Projects: Enabling remote control for Arduino, ESP32, and Raspberry Pi systems.
• Smart Home Devices: Facilitating infrared bridge or gateway communication for legacy appliance control.

Applications:

• Wireless Data Transmission: Receiving low-bitrate data wirelessly over short distances.
• Remote Switching: Toggling relays or power outlets using standard IR remotes.
• Robotic Navigation: Detecting IR beacons for docking or localized positioning.

Equivalent Models:

• TSOP1738: A popular 38 kHz receiver, however, check the pinout carefully as it may differ from the VS1838B.
• TSOP38238: A smaller, modernized alternative from Vishay with similar performance characteristics.
• AX-1838HS: A high-performance equivalent often found in industrial remote control equipment.

Package Includes:

• 1 x VS1838B TSOP Infrared Receiver Module