MAX9679BETG+

Video Processing Overview

The MAX9679BETG+ is a specialized integrated circuit providing 12 programmable gamma reference voltages and one VCOM voltage for TFT LCD panels. It features 10-bit resolution DACs with high-current buffers to reduce recovery times during critical display patterns. The device integrates a programmable internal reference voltage, eliminating the need for external references. It supports two independent sets of gamma curves and VCOM codes stored in volatile memory, selectable via the BKSEL signal. Nonvolatile multiple-time programmable (MTP) memory stores configuration data, removing the requirement for external EEPROM.

Video Processing Feature Summary

• Integrates 12-channel gamma correction and VCOM adjustment with 10-bit digital-to-analog converters.
• Includes an internal programmable reference voltage generator to simplify system design.
• Features nonvolatile MTP memory to store calibration codes without external storage components.
• Supports rapid switching between two independent sets of gamma and VCOM configurations.

Video Processing Applications

• TFT LCD panel driver circuits
• Display timing controller (TCON) systems
• Source driver chip integration

Video Processing Procurement Notes

Verify the specific suffix ETG+ corresponds to the TQFN-EP package and lead-free/RoHS compliance status required for your assembly process. Confirm that the operating temperature range of -40°C to +85°C aligns with your environmental specifications. Ensure I2C interface compatibility with your host controller's voltage levels and clock speeds before finalizing procurement.

Video Processing Selection Notes

Select this component when a single-chip solution for gamma and VCOM generation is required to minimize board space and component count. It is suitable for applications needing high-speed voltage recovery and precise 10-bit resolution control. Consider the separate AVDD supplies if thermal management or power sequencing flexibility is a priority for the display driver architecture.

Video Processing Part Context

This part belongs to the Maxim Integrated MAX9679 family of display reference voltage generators. It is designed to replace discrete resistor networks and external reference chips previously used in LCD driver designs. The device consolidates gamma, VCOM, and reference functions into a single TQFN package, streamlining the power delivery network for TFT-LCD source drivers.

Video Processing Replacement Considerations

Direct pin-compatible replacements are not explicitly listed in the provided documentation. When evaluating alternatives, ensure the substitute supports 12-channel gamma output, 10-bit resolution, and I2C control. Verify that the alternative offers comparable current sourcing capabilities for VCOM and gamma buffers.