ZXCD1000EQ16TA

Overview

The ZXCD1000EQ16TA is a Class D audio amplifier controller IC in a 16-pin exposed pad QSOP package. It operates with a supply voltage range of 12V to 18V and features an internal oscillator set by an external capacitor, typically yielding a switching frequency around 200kHz. The device provides high gate drive capability for external MOSFETs and includes dedicated pins for synchronization in multi-channel applications.

Feature Summary

• Proprietary circuit design eliminates traditional crossover distortion artifacts found in other Class D solutions.
• Integrated oscillator generates triangular waveforms for PWM comparison, enabling high-fidelity audio reproduction.
• Dedicated synchronization outputs allow multiple units to be slaved together to prevent audible beat frequencies in stereo systems.

Applications

• DVD Players
• Automotive audio systems
• Home Theatre
• Wireless speakers
• Sub woofer systems

Procurement Notes

Verify the datasheet revision level matches your design requirements, as specifications may evolve. Confirm that the TA suffix corresponds to the tape and reel packaging format required for your assembly line. Ensure the 16-pin QSOP footprint aligns with your PCB layout guidelines.

Selection Notes

Select this component when designing high-efficiency Class D amplifiers requiring low total harmonic distortion. It is suitable for bridge-tied load configurations driving 4 or 8 ohm loads. Consider the need for external phase splitters and output filter networks to complete the amplifier solution.

Part Context

This part is a Class D controller manufactured by Zetex Semiconductors, now part of Diodes Incorporated. It serves as the core modulation unit for high-performance audio amplifier designs, relying on external power MOSFETs and magnetics to deliver audio power to speaker loads.

Replacement Considerations

The ZXCD1000EQ16 is functionally equivalent to the ZXCD1000EQ16TA. Verify pin compatibility and thermal performance if substituting between these variants.

FAQ

How is the switching frequency determined?

The switching frequency is set by connecting an external timing capacitor (Cosc) to Pin 5. A typical value of 330pF results in a frequency around 200kHz.

Can this IC be used for stereo applications?

Yes, two units can be synchronized by linking the triangle waveform from a master device to a slave device to prevent audible beat frequencies.