PAM8012AZN

Overview

The PAM8012AZN is a mono filterless Class-D audio power amplifier manufactured by Diodes Incorporated. It delivers 2.0W output into a 4Ω load and 1.0W into an 8Ω load at a 5V supply voltage with less than 1% THD. The device operates on a supply voltage range of 2.5V to 5.5V and features high PSRR and differential inputs to reduce noise. Key electrical parameters include a peak efficiency of up to 90%, a signal-to-noise ratio of 95dB, and a switching frequency of 250kHz. It incorporates anti-saturation functionality, auto-recovering short-circuit protection, and overtemperature protection.

Feature Summary

• Filterless architecture eliminates the need for external output filters, reducing component count and PCB area.
• Anti-saturation function automatically detects output signal clipping and adjusts gain to maintain sound quality and prevent speaker damage.
• Maximum output power can be configured using a single external resistor connected to the PL pin.
• Includes auto-recovering short-circuit protection and overtemperature protection to ensure device reliability.

Applications

• Wireless or cellular handsets
• Portable navigation devices
• General portable audio devices

Procurement Notes

Verify that the specific part number matches the required package type, as the PAM8012 series includes both WCSP9 and eMSOP10 options. Confirm compliance with automotive qualification standards if intended for such environments, as standard parts may not meet AEC-Q100 requirements. Ensure design compatibility with the recommended operating conditions regarding supply voltage and ambient temperature ranges specified in the datasheet.

Selection Notes

Select this component for applications requiring a compact, high-efficiency mono audio solution without external filtering. Consider the available packages, specifically the tiny WCSP9 (1.3mm x 1.3mm) or eMSOP10, based on space constraints. Note that the datasheet explicitly states the PAM8012 is not recommended for new designs and suggests using the PAM8014 instead.

Part Context

The PAM8012AZN belongs to the PAM8012 family of mono Class-D audio amplifiers from Diodes Incorporated. This series is designed for portable electronics where size and efficiency are critical. The 'AZN' suffix indicates the WCSP9 package variant. The product line emphasizes low noise performance and simplified application design through integrated protection features and minimal external components.

Replacement Considerations

The datasheet explicitly recommends using the PAM8014 as a replacement for new designs. Verify if the PAM8014 offers compatible pinouts and electrical characteristics for your specific application before substituting.

FAQ

How is the maximum output power limited?

The maximum output power can be set by connecting a single external resistor to the PL pin.

What happens during a short circuit?

The device enters a shutdown state immediately. Once the short is removed, the device will automatically reactivate.

Is the PAM8012 suitable for new designs?

No, the datasheet states that the PAM8012 is not recommended for new designs and suggests using the PAM8014 instead.