The **TSOP932..DF1P** series is a high-performance miniaturized IR receiver module designed for infrared remote control systems. It is part of Vishay’s latest generation of IR sensors, featuring improved robustness against noise and interference. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Component Type** | IR Receiver Module (Photo detector + Preamplifier) | | **Supply Voltage (Vs)** | 2.0 V to 3.6 V (Low power consumption) | | **Supply Current (Is)** | 0.35 mA to 0.45 mA | | **Carrier Frequency** | 30 kHz to 56 kHz (Varies by sub-model, e.g., TSOP93238 is 38kHz) | | **Transmission Distance** | Up to 40 meters | | **Mounting Type** | Surface Mount (SMD) | --- ### 2. Internal Components & Functional Blocks The "electronic parts" inside this tiny 4-pin package include: 1. **PIN Photodiode:** Converts the incoming Infrared light into a tiny electrical current. 2. **Preamplifier:** Boosts the weak signal from the photodiode. 3. **Automatic Gain Control (AGC):** Dynamically adjusts sensitivity to handle both strong (close range) and weak (long range) signals. 4. **Band Pass Filter:** Specifically tuned to the carrier frequency (e.g., 38kHz) to block ambient light and noise from fluorescent lamps. 5. **Demodulator:** Removes the carrier wave and outputs the original digital data signal. --- ### 3. Features and Advantages * **Noise Immunity:** It is highly resistant to "optical noise" like sunlight or CFL/LED bulb interference. * **Low Power:** Ideal for battery-operated devices (remotes, IoT sensors). * **DF1P Package:** This refers to the specific physical dimensions and lead-frame design, which is a side-view surface mount package. --- ### 4. Typical Application Circuit To use the TSOP932..DF1P, a simple external circuit is recommended to protect against power supply ripples: ```cpp // Basic Pinout Connection: // Pin 1: OUT (Connects to Microcontroller GPIO) // Pin 2: GND (Ground) // Pin 3: VS (Power Supply 2.0V - 3.6V) // Pin 4: GND (Additional Ground for Shielding) // Suggested filtering: // 1. Place a 100 Ohm resistor in series with the VS line. // 2. Place a 4.7 uF capacitor between VS and GND. ``` ---