The **RTS-2A11-R** is a high-performance **Fiber Optic Receiver** module, typically used in industrial automation, data communications, and power electronics. It is designed to convert optical signals back into electrical signals (TTL logic levels). ### 1. Technical Specifications The following table highlights the primary electrical and optical characteristics of the RTS-2A11-R: | Parameter | Specification | Unit | | :--- | :--- | :--- | | **Data Rate** | DC to 5 (or 10) | Mbps | | **Supply Voltage (Vcc)** | 4.75 to 5.25 | Volts | | **Output Type** | TTL / CMOS Compatible | - | | **Connector Type** | ST (Straight Tip) | - | | **Operating Temperature** | -40 to +85 | °C | | **Fiber Core Diameter** | 200 (HCS) / 62.5 / 50 | µm | --- ### 2. Internal Electronic Architecture The RTS-2A11-R integrates several key electronic components into a single shielded housing to ensure signal integrity: 1. **Photodiode:** A high-sensitivity PIN photodiode that converts incoming photons (light) from the fiber cable into a proportional electrical current. 2. **Transimpedance Amplifier (TIA):** Converts the low-level current from the photodiode into a measurable voltage. 3. **Quantizer / Schmitt Trigger:** This stage digitizes the analog voltage into a clean square wave (TTL), providing sharp edges and reducing jitter for the downstream microcontroller or logic circuit. 4. **Decoupling Circuitry:** Internal capacitors help filter noise from the power supply, which is critical in high-EMR (Electromagnetic Radiation) environments. --- ### 3. Key Features & Applications * **Electromagnetic Immunity:** Because the medium is fiber optics, the receiver is completely immune to EMI/RFI, making it ideal for high-voltage inverter control. * **Galvanic Isolation:** Provides total electrical isolation between the transmitter and receiver, protecting sensitive electronics from ground loops. * **Plug-and-Play Integration:** The TTL output allows it to be connected directly to the GPIO pins of an FPGA, PLC, or MCU without complex interface circuitry. --- ### 4. Connection Diagram (General) ```markdown [ Fiber Cable ] --> [ ST Connector ] | +-------V-------+ | RTS-2A11-R | +---------------+ | | | Vcc GND Data Out (TTL) ```