The **ADV3003ACPZ-R7** is a high-performance HDMI/DVI switch produced by Analog Devices. It is specifically designed as a 3-to-1 switch, allowing multiple digital video sources to be routed to a single display or receiver. --- ## 1. Core Technical Specifications The following table summarizes the primary electrical and physical characteristics of the ADV3003ACPZ-R7: | Parameter | Specification | | :--- | :--- | | **Function** | 3:1 HDMI/DVI Switch | | **Max Data Rate** | 2.25 Gbps per channel (Total 6.75 Gbps) | | **Supported Resolution** | Up to 1080p (60Hz) or UXGA (1600x1200) | | **Operating Voltage** | 3.3 V | | **Package Type** | LFCSP-40 (Lead Frame Chip Scale Package) | | **Mounting Type** | Surface Mount (SMT) | | **Temperature Range** | -40°C to +85°C | --- ## 2. Key Electronic Components & Features The ADV3003 integrates several critical sub-systems to ensure signal integrity across digital interfaces: ### A. TMDS Equalization The chip includes **Adaptive Equalization** on its inputs. This circuitry compensates for signal loss caused by long HDMI cables (up to 20 meters at 1080p). It reconstructs the Transition Minimized Differential Signaling (TMDS) to ensure a "clean" signal reaches the receiver. ### B. DDC Buffers It features integrated buffers for the **Display Data Channel (DDC)**. These buffers allow the EDID (Extended Display Identification Data) information to pass between the source and the sink while protecting the delicate I2C bus from capacitance issues. ### C. Pre-emphasis On the output side, the device utilizes **Programmable Pre-emphasis**. This boosts the high-frequency components of the signal, helping it travel through the PCB traces and connectors of the output device without significant jitter. ### D. ESD Protection The ADV3003 is equipped with robust internal ESD (Electrostatic Discharge) protection, which is critical for HDMI ports that are frequently plugged and unplugged by users. --- ## 3. Typical Application Circuit When designing with this part, engineers typically follow this functional block layout: ```mermaid graph LR S1[HDMI Source 1] --> ADV[ADV3003 Switch] S2[HDMI Source 2] --> ADV S3[HDMI Source 3] --> ADV ADV --> TV[HDMI Sink / Display] MCU[Microcontroller] -- I2C/GPIO --> ADV ``` ### Pin Configuration Highlights * **VCC:** Power supply pins (3.3V). * **IN_A/B/C:** Differential pairs for the three HDMI inputs. * **OUT:** Differential pairs for the single HDMI output. * **SEL:** Control pins used to toggle between the input sources. --- ## 4. Ordering Information The "R7" suffix in the part number `ADV3003ACPZ-R7` specifically refers to the packaging format: * **ADV3003:** Base Model Number. * **ACPZ:** Lead-free (RoHS compliant) LFCSP package. * **R7:** Provided on a **7-inch Reel** (typically contains 1,500 units). ---