The **TSSP53038DF1P** is a high-performance infrared (IR) sensor module designed for proximity sensing and object detection. It belongs to the TSSP530 series manufactured by Vishay Semiconductors. --- ### 1. Key Technical Specifications Below are the primary electrical and physical characteristics: | Property | Value/Description | | :--- | :--- | | **Carrier Frequency** | 38 kHz | | **Supply Voltage (Vs)** | 2.0 V to 5.5 V | | **Supply Current (Is)** | 0.7 mA (typical) | | **Transmission Distance** | Up to 40 meters (with emitter) | | **Package Type** | Belobog (Surface Mount - SMD) | | **Optical Filter** | Integrated Daylight Filter (blocks visible light) | | **Output Type** | Active Low (CMOS logic) | --- ### 2. Functional Components The device integrates several electronic components into a single miniaturized package: * **Photodiode:** Converts infrared light pulses into electrical signals. * **Preamplifier:** Boosts the weak signal from the photodiode. * **Band Pass Filter:** Specifically tuned to **38 kHz** to eliminate noise from other light sources (like sunlight or fluorescent bulbs). * **Demodulator:** Converts the carrier frequency pulses into a clean logic signal for a microcontroller (MCU). --- ### 3. Pin Configuration The "DF1P" designation typically refers to a specific lead-bending and packaging style (Top View). | Pin Number | Name | Function | | :--- | :--- | :--- | | **1** | OUT | Output signal (connects to MCU GPIO) | | **2** | GND | Ground connection | | **3** | Vs | Power supply (2.0V - 5.5V) | --- ### 4. Primary Applications Unlike standard IR receivers (like the TSOP series) which are used for remote control decoding, the **TSSP** series is optimized for continuous signal detection: * **Proximity Sensors:** Detecting if an object is near a device (e.g., automatic faucets). * **Light Barriers:** Used in security systems or industrial counting lines. * **Reflective Sensors:** Used in robotics for floor detection or obstacle avoidance. --- ### 5. Implementation Example To use this part, you typically pair it with a 940nm IR LED pulsing at 38kHz. ```c // Pseudo-code for MCU detection if (digitalRead(SENSOR_PIN) == LOW) { // Object detected (Path is blocked or reflected) triggerAction(); } else { // No object detected standby(); } ```