## Overview of the 4614H-R2R-503 The **4614H-R2R-503** is a specific electronic component belonging to the family of **Resistor Networks**, manufactured primarily by **Bourns**. It is designed as a thick-film, conformal coated R-2R Ladder Network, commonly used in digital-to-analog conversion applications. --- ### 1. Part Number Breakdown To understand the specifications, we can decode the part number: | Segment | Code | Meaning | | :--- | :--- | :--- | | **Series** | 4614H | 4600 Series, 14 Pins, High Profile (Conformal Coat) | | **Circuit** | R2R | R-2R Ladder Configuration | | **Resistance** | 503 | 50,000 Ohms (50kΩ) | --- ### 2. Technical Specifications The component is characterized by its precision and physical layout. * **Package Type:** Single In-line Package (SIP). * **Pin Count:** 14 Pins. * **Resistance Value (R):** 50kΩ. * **Tolerance:** Typically ±1% or ±2%. * **Temperature Coefficient:** ±100 ppm/°C. * **Profile:** High profile (approx. 8.89mm height) to allow for better heat dissipation and specific voltage ratings. * **Operating Temperature:** -55°C to +125°C. --- ### 3. The R-2R Ladder Circuit The "R2R" designation is the most critical functional aspect of this part. In an R-2R ladder, the network uses only two resistance values: **R** (50kΩ) and **2R** (100kΩ). #### How it works: 1. **Digital-to-Analog Conversion (DAC):** It acts as a binary-weighted voltage divider. 2. **Input/Output:** Digital signals are applied to the input pins, and the ladder produces an output voltage proportional to the binary value of the inputs. 3. **Advantages:** Unlike binary-weighted resistor networks that require many different resistor values, the R-2R ladder only requires two values, making it easier to maintain precision and temperature tracking. --- ### 4. Common Applications Due to its SIP form factor and ladder configuration, the 4614H-R2R-503 is typically found in: * **Legacy Audio Equipment:** Early digital audio synthesis. * **Industrial Controls:** Generating analog control signals from microcontrollers. * **Voltage Dividers:** Where precise, ratiometric voltage steps are required. * **Testing Equipment:** Calibration circuits requiring variable reference voltages. --- ### 5. Physical Dimensions (Typical) | Dimension | Measurement (Approx.) | | :--- | :--- | | Length | 35.56 mm | | Height | 8.89 mm | | Thickness | 2.49 mm | | Pin Pitch | 2.54 mm (0.1 inch) |