ADAU1513ACPZ

Overview

The ADAU1513ACPZ is a 2-channel bridge-tied load (BTL) Class-D audio power stage manufactured by Analog Devices Inc. It operates from a power supply voltage range of 9 V to 18 V, with digital and analog logic supplied at 3.3 V. The device delivers up to 19 W per channel into a 4 Ω load at 1% THD+N. Key electrical parameters include an efficiency of 90%, a signal-to-noise ratio of 96 dB, and a total harmonic distortion plus noise of 0.1%. Thermal protection activates at 135°C for warning and 150°C for shutdown.

Feature Summary

• Integrated stereo power stage with built-in thermal warning, thermal shutdown, overcurrent, and short-circuit protection circuits.
• Accepts 3.3 V logic differential PWM inputs directly from pulse-width modulator processors.
• Features open-drain error flag outputs (ERR and OTW) for system microcontroller interfacing and status monitoring.
• Includes undervoltage lockout logic on both digital and power supplies to prevent operation under insufficient voltage conditions.

Applications

• Flat panel televisions
• PC audio systems
• Mini components

Procurement Notes

Verify the specific package variant required, as the ACPZ suffix denotes the Lead Frame Chip Scale Package. Confirm RoHS compliance status through official documentation. Check current availability as the component may be subject to limited supply or obsolescence notices. Ensure the ordering suffix matches the desired tape and reel quantity if applicable.

Selection Notes

Select this component for applications requiring high-efficiency Class-D amplification driven by external PWM modulators like the ADAV4201. Consider the thermal resistance and heat-sinking requirements when designing for output powers exceeding 15 W at 4 Ω loads. Ensure the system supports the necessary 3.3 V logic levels for control inputs and PWM signals.

Part Context

The ADAU1513 belongs to Analog Devices' line of integrated audio power stages designed for direct interface with SigmaDSP audio processors. It simplifies design by integrating gate drive and protection logic, eliminating the need for bootstrap capacitors or separate gate driver supplies typically found in discrete Class-D implementations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices sales for potential alternatives or updated product recommendations.