Overview
The AD8195ACPZ-R7, produced by Analog Devices Inc., is an HDMI/DVI buffer integrated circuit designed to enhance signal integrity in systems requiring high-speed video transmission. This device features equalized TMDS (Transition-Minimized Differential Signaling) inputs and preemphasized TMDS outputs, making it ideal for applications with long cable runs. The AD8195 supports HDMI 1.3a and DVI standards, ensuring compliance with high-definition video requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | −40°C to +85°C | °C |
| Package Type | 40-Lead LFCSP (6mm x 6mm) | |
| Data Rate | 250 Mbps to 2.25 Gbps | bps |
| Pixel Clock Range | 25 MHz to 225 MHz | Hz |
| Input Voltage Swing (Differential) | 150 mV to 1200 mV | mV |
| Input Common-Mode Voltage (VICM) | AVCC − 800 mV to AVCC + 800 mV | mV |
| Output Termination Resistance (Single-ended) | 50 Ω | Ω |
| Rise/Fall Time (20% to 80%) at 2.25 Gbps | 50 ps to 150 ps | ps |
| Power Dissipation (Maximum) | 1047 mW | mW |
Key Features
- Supports HDMI 1.3a and DVI standards.
- Equalized TMDS inputs for operation with long HDMI cables (up to 20 meters at 2.25 Gbps).
- Preemphasized TMDS outputs to enhance signal integrity.
- Fully buffered unidirectional inputs/outputs with 50 Ω on-chip terminations.
- Low added jitter and transmitter disable feature to reduce power dissipation.
- Bidirectional buffering for the DDC bus and CEC line with integrated pull-up resistors.
- Logic level translation (3.3 V, 5 V) and input/output capacitance isolation.
- Auxiliary buffer powered independently from the TMDS link to maintain DDC/CEC functionality when the system is powered off.
Applications
The AD8195ACPZ-R7 is primarily used in applications requiring high-speed video signal transmission and processing, such as:
- Front panel buffers for advanced television (HDTV) sets.
- Game consoles and other consumer electronics requiring HDMI/DVI connectivity.
- Professional video equipment and broadcast systems.
Q & A
- What is the primary function of the AD8195ACPZ-R7?
The AD8195ACPZ-R7 is an HDMI/DVI buffer with equalization, designed to enhance signal integrity in high-speed video transmission systems.
- What are the supported data rates for the AD8195ACPZ-R7?
The device supports data rates from 250 Mbps to 2.25 Gbps.
- What is the maximum length of HDMI cables supported by the AD8195ACPZ-R7?
The device can operate with HDMI cables up to 20 meters long at data rates of up to 2.25 Gbps.
- Does the AD8195ACPZ-R7 support bidirectional buffering for DDC and CEC lines?
- How is the auxiliary buffer powered in the AD8195ACPZ-R7?
The auxiliary buffer is powered independently from the TMDS link, allowing DDC/CEC functionality to be maintained even when the system is powered off.
- What is the operating temperature range of the AD8195ACPZ-R7?
The device operates over a temperature range of −40°C to +85°C.
- What package type is used for the AD8195ACPZ-R7?
The device is packaged in a 40-Lead LFCSP (6mm x 6mm).
- Does the AD8195ACPZ-R7 support logic level translation?
- What are some typical applications for the AD8195ACPZ-R7?
Typical applications include front panel buffers for HDTV sets, game consoles, and professional video equipment.
- How does the AD8195ACPZ-R7 reduce power dissipation?
The device features a transmitter disable function that reduces power dissipation and disables input termination.
