AD8197AASTZ

Overview

The AD8197AASTZ-RL is a 4:1 HDMI/DVI switch with equalization, manufactured by Analog Devices Inc. It operates within a temperature range of -40°C to +85°C and utilizes a 100-lead LQFP package. The device supports data rates up to 2.25 Gbps and pixel clocks from 25 MHz to 225 MHz. It features fully buffered unidirectional high-speed inputs/outputs and bidirectional auxiliary channels. Power supply requirements include single-supply operation at 3.3 V for main functions and flexible supply operation between 3.3 V and 5 V for auxiliary channels.

Feature Summary

• Enables HDMI 1.3-compliant receiver functionality through integrated input cable equalization and pre-emphasized outputs.
• Supports switching of DDC bus and two additional signals via auxiliary channels for a single-chip solution.
• Offers globally switchable 50 Ω on-chip terminations and output disable features to reduce power dissipation.
• Provides serial (I2C slave) and parallel control interfaces for configuration.

Applications

• Multiple input displays
• Projectors
• A/V receivers
• Set-top boxes
• Advanced television (HDTV) sets

Procurement Notes

Verify the specific suffix 'RL' indicates reel packaging when sourcing components. Confirm that the manufacturer is Analog Devices Inc. Ensure the part number matches the exact 100-lead LQFP specification. Check for RoHS compliance status as indicated in official documentation. Validate that the operating temperature range meets system requirements.

Selection Notes

Select this component for applications requiring long cable runs due to its equalization capabilities. Consider the pin-to-pin compatibility with the AD8191A if upgrading existing designs. Evaluate the need for serial versus parallel control interfaces based on system architecture. Ensure the 3.3 V and 5 V supply rails are available for proper operation.

Part Context

The AD8197A belongs to the Analog Devices HDMI/DVI switch family. It serves as a replacement for the AD8191A while adding equalization features. The device is designed to handle high-speed TMDS channels and low-speed auxiliary signals. It supports dual-link configurations when two devices are used together.

Replacement Considerations

The AD8197A is pin-to-pin compatible with the AD8191A. Verify that the original design supports the additional equalization features. Ensure that the control interface settings are correctly configured for the new device.

FAQ

What is the maximum data rate supported by the AD8197AASTZ-RL?

The device supports data rates up to 2.25 Gbps per channel.

How does the AD8197AASTZ-RL handle long HDMI cables?

It includes an input cable equalizer that enables operation with long HDMI cables, supporting more than 20 meters of 24 AWG cable at 2.25 Gbps.

Can the AD8197AASTZ-RL be controlled via I2C?

Yes, it provides a serial I2C slave control interface for configuration.