ADV7194KST

Overview

The ADV7194KST is a digital video encoder manufactured by Analog Devices Inc. It converts CCIR-601/656 4:2:2 YCrCb data into analog composite, S-video (Y/C), RGB, or YUV signals for NTSC and PAL standards. The device features six 10-bit DACs, a 54 MHz internal PLL with 4x oversampling, and supports both interlaced and progressive scan inputs. It operates on 3.3 V or 5 V supplies within a temperature range of 0°C to 70°C.

Feature Summary

• Integrates six high-quality 10-bit video DACs for component output generation.
• Supports multistandard video input including ITU-R BT.656 and progressive scan formats.
• Includes programmable video controls such as digital noise reduction and gamma correction.
• Features an I2C-compatible serial interface for register configuration.

Applications

• Professional DVD playback systems
• PC video and multimedia playback systems
• Progressive scan playback systems
• Professional studio equipment

Procurement Notes

Verify the specific ordering suffix KST corresponds to the 80-lead LQFP package and the commercial temperature range of 0°C to 70°C. Confirm that the component meets the required ESD protection standards during handling and installation to prevent performance degradation.

Selection Notes

Select this model when interfacing with devices requiring standard analog baseband television signal outputs from digital CCIR-601/656 sources. Ensure the system design accommodates the necessary external resistors for DAC current setting and capacitors for compensation pins to maintain signal integrity.

Part Context

This component belongs to the ADV7194 series of professional video encoders. It is designed to replace older encoding solutions by offering extended 10-bit processing capabilities and support for modern display interfaces while maintaining compatibility with legacy broadcast standards.

Replacement Considerations

The datasheet indicates register compatibility with the ADV7172 and ADV7173 models. These may serve as functional substitutes in existing designs requiring similar encoding capabilities without significant hardware modifications.

FAQ

What clock frequency is required for standard operation?

A stable 27 MHz reference clock is required at the CLKIN pin for standard operation.

Can the ADV7194 handle progressive scan inputs?

Yes, it accepts 3 × 10-bit YCrCb progressive scan format to facilitate interfacing with progressive scan devices.

How is the MPU interface configured?

It uses a 2-wire serial bidirectional port compatible with I2C and Fast I2C protocols, featuring two slave addresses.