### RI-TRP-R4FF-16 Technical Overview The **RI-TRP-R4FF-16** is a high-performance Radio Frequency Identification (RFID) transponder manufactured by Texas Instruments. It belongs to the **TIRIS™** (Texas Instruments Registration and Identification System) product line and is specifically designed for low-frequency (LF) applications. --- ### Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Frequency** | 134.2 kHz | | **Transponder Type** | Read-Only (RO) | | **Memory Size** | 64 bits | | **Form Factor** | 32 mm Glass Transponder (Cylindrical) | | **Operating Temperature** | -40°C to +85°C | | **Storage Temperature** | -40°C to +100°C | | **Encapsulation** | Hermetically sealed glass | --- ### Core Electronic Characteristics 1. **Passive Operation:** The device is passive, meaning it does not contain a battery. It derives its power from the electromagnetic field generated by the RFID reader (exciter). 2. **FM (FSK) Transmission:** Unlike many LF tags that use Amplitude Shift Keying (ASK), this part utilizes **Frequency Shift Keying (FSK)**. This provides superior resistance to electromagnetic interference (EMI) and noise common in industrial environments. 3. **Read-Only Functionality:** The "R4FF" variant is pre-programmed during the manufacturing process with a unique 64-bit identification code. This code cannot be altered or overwritten, ensuring high security and traceability. 4. **Resonance and Tuning:** The internal electronics consist of an LC resonant circuit (an inductive coil and a high-quality ceramic capacitor) integrated with a silicon chip. The components are tuned to exactly 134.2 kHz to maximize energy transfer efficiency. --- ### Mechanical Durability The electronic components are encased in a **hard glass capsule**. This provides: * **Hermetic Sealing:** Protection against moisture, chemicals, and bodily fluids. * **Pressure Resistance:** High structural integrity for industrial or underground use. * **Biocompatibility:** Suitable for certain animal tracking or harsh environment applications. --- ### Pinout / Internal Structure *Note: As a glass transponder, it does not have external pins. It communicates wirelessly via inductive coupling.* ```text [ Glass Capsule ] | +--- [ Copper Wire Coil (Antenna) ] | +--- [ Tuning Capacitor ] | +--- [ IC Chip (Logic + Memory) ] ``` ---