AX5689GRK-P

Overview

The AX5689GRK-P is a Class-D digital audio amplifier controller manufactured by Monolithic Power Systems. It integrates a digital audio converter and amplifier control logic in a QFN-64 package. The device operates on a supply voltage range of 1.1 V to 1.3 V and supports four output channels. Key electrical specifications include a gain-bandwidth product of 60 kHz, a slew rate of 14 mA/us, and a THD+N performance of -100 dB. It functions within an operating temperature range of -40°C to +85°C and includes shutdown capabilities for power management.

Feature Summary

• Integrates digital audio conversion with Class-D amplifier control logic
• Supports high-order digital control loops with post-filter feedback
• Delivers low power consumption with excellent audio fidelity
• Features I2C interface for configuration and monitoring

Applications

• High-fidelity digital audio systems requiring integrated control
• Multi-channel audio processing units
• Consumer electronics with strict power constraints

Procurement Notes

Verify the exact suffix (Z vs P) as availability varies. Confirm current lifecycle status, as some variants are marked obsolete. Check moisture sensitivity levels for handling requirements. Ensure compatibility with existing I2C addresses and clock frequencies. Validate package dimensions against PCB footprint designs before ordering.

Selection Notes

Select this component when a combined digital-to-analog and amplifier control solution is required in a compact form factor. Consider the 1.1V to 1.3V supply constraint for system design. Evaluate the 64-pin QFN package for thermal and space limitations. Compare channel count requirements against other family members if fewer channels suffice.

Part Context

This part belongs to the Axign series of digital audio controllers from Monolithic Power Systems. It is designed to replace discrete solutions by integrating conversion and control. The AX5689 series focuses on high-performance audio applications where size and power efficiency are critical parameters for modern electronic devices.

Replacement Considerations

The AX5688GRK-P is a related variant offering mono or stereo output configurations. Verify pinout compatibility and software register maps when substituting. Note that the AX5689GRK-Z is another suffix variant; confirm functional equivalence before replacement.