ADV7173KST

Overview

The ADV7173KST is a digital PAL/NTSC video encoder manufactured by Analog Devices Inc. It converts digital CCIR-601 4:2:2 YCrCb data into standard analog baseband television signals. The device integrates six 10-bit DACs, supporting composite, S-Video (Y/C), and YUV outputs. It operates on a single 5 V or 3.3 V supply with an operating temperature range of 0°C to 70°C. Key specifications include an 80 dB video SNR, a 27 MHz clock requirement for standard operation, and a 48-lead LQFP package.

Feature Summary

• Integrates Super Sub-Alias Filter (SSAF) for extended luminance frequency response and sharp stopband attenuation.
• Features advanced power management with individual DAC ON/OFF control and ultralow sleep mode current.
• Supports multiple video output formats including Composite, Component S-Video, YUV, and EuroSCART RGB.
• Includes programmable color controls for hue, brightness, contrast, and saturation via I2C interface.

Applications

• High performance DVD playback systems
• Portable video equipment such as digital still cameras and laptop PCs
• Video game consoles
• PC video and multimedia applications
• Digital satellite and cable set-top boxes

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. Ensure compatibility with system voltage requirements, as the device supports both 3.3 V and 5 V supplies. Confirm that the design accounts for ESD sensitivity during handling and installation procedures.

Selection Notes

Select the ADV7173KST when conversion from digital CCIR-601 component video to analog baseband is required. Choose this model over the ADV7172 if Macrovision anti-copy functionality is not needed. Consider the available DAC configurations and power consumption levels relative to the target application's thermal and electrical constraints.

Part Context

The ADV7173KST belongs to the ADV7172/ADV7173 family of digital video encoders. Functionally identical to the ADV7172, it lacks the integrated Macrovision anti-taping algorithm found in the ADV7172 variant. Both devices share the same 48-lead LQFP package and core encoding capabilities for NTSC and PAL standards.

Replacement Considerations

The ADV7172KST is a functional substitute within the same family, differing primarily in the inclusion of Macrovision support. Verify pinout and software register compatibility before substitution. No other direct cross-model replacements are documented in the provided datasheet.

FAQ

What is the difference between the ADV7173 and ADV7172?

The ADV7173 and ADV7172 are functionally identical except that the ADV7172 includes Macrovision anti-copy algorithm support, which the ADV7173 does not.

What clock frequencies are supported by the ADV7173?

Standard operation requires a 27 MHz clock. For square pixel mode, it supports 24.5454 MHz for NTSC and 29.5 MHz for PAL.

How many DACs are integrated in the ADV7173?

The device contains six 10-bit DACs, which can be configured to output various combinations of composite, S-Video, and YUV signals.