The **4616H-R2R-503** is a high-reliability electronic component known as a **Resistor Network**, specifically designed as an **R-2R Ladder Network**. It is manufactured by Bourns and is commonly used in digital-to-analog conversion applications. --- ### 1. Key Specifications | Feature | Specification | | :--- | :--- | | **Part Number** | 4616H-R2R-503 | | **Network Type** | R-2R Ladder (Binary Weighted) | | **Resistance Value** | 50 kΩ ($R=50k, 2R=100k$) | | **Pin Count** | 16 Pins | | **Package Type** | SIP (Single In-line Package) | | **Profile** | High Profile (H) | | **Accuracy/Tolerance** | ±1% or ±2% (Typical for H series) | --- ### 2. Functional Description The "R-2R" designation refers to the internal architecture of the resistor arrangement. This specific part is used to convert digital signals into a proportional analog voltage. * **R and 2R Values:** In this specific model (503), the base resistance $R$ is **50 kΩ**. Therefore, the internal resistors are a combination of 50 kΩ and 100 kΩ. * **Bit Resolution:** Because it has 16 pins, it typically supports an **8-bit** or **14-bit** conversion process, depending on how the common and ground pins are allocated in the circuit design. --- ### 3. Pinout and Construction The **4616H** series belongs to the Conformal Coated SIP family. * **46:** Model series. * **16:** Number of pins. * **H:** High Profile (allows for better power dissipation and larger resistor elements). * **R2R:** The specific circuit configuration (Ladder). * **503:** Resistance code ($50 \times 10^3 = 50,000$ Ohms). --- ### 4. Common Applications 1. **Digital-to-Analog Converters (DAC):** Creating an analog output from a microcontroller’s digital pins. 2. **Voltage Dividers:** Providing precise, stepped voltage references. 3. **Signal Processing:** Used in audio equipment or instrumentation where a variable voltage is needed based on digital logic. --- ### 5. Advantages * **Space Saving:** Consolidates multiple discrete resistors into one small SIP package. * **Thermal Matching:** Since all resistors are on the same substrate, they track temperature changes identically, maintaining accuracy. * **Precision:** Much higher accuracy than using individual discrete resistors with varying tolerances.