PAM8124RHR

Overview

The PAM8124RHR is a Class-D audio power amplifier manufactured by Diodes Incorporated, housed in a TSSOP-24-EP surface-mount package. It operates on a supply voltage ranging from 10V to 26V and delivers up to 30W per channel into an 8Ω load in bridge-tied-load (BTL) configuration, or 15W per channel into a 4Ω load in single-ended (SE) mode. The device features four selectable fixed gain settings of 20dB, 26dB, 32dB, and 36dB controlled via GAIN0 and GAIN1 pins. It includes internal thermal and short-circuit protection with auto-recovery, supports pop-free startup/shutdown sequences, and achieves high efficiency up to 95%.

Feature Summary

• Supports multiple output configurations including two-channel single-ended and one-channel bridge-tied-load modes.
• Features four selectable fixed-gain settings for flexible system integration.
• Incorporates internal oscillator requiring no external timing components.
• Provides thermal and short-circuit protection with automatic recovery functionality.

Applications

• Televisions
• Home Sound Systems
• Active Speakers

Procurement Notes

Verify the component authenticity through authorized Diodes Incorporated distribution channels. Confirm that the specific order code matches the required TSSOP-24-EP package variant. Ensure compliance with RoHS standards as indicated in official documentation. Validate that the intended operating environment remains within the specified temperature range and voltage limits to maintain performance reliability.

Selection Notes

Select this amplifier when high efficiency and minimal heat dissipation are critical requirements. Consider the available gain settings and input impedance variations when designing the preceding signal stage. Evaluate the PCB layout capabilities for thermal management, as the design relies on copper area for heat spreading rather than external heatsinks. Verify compatibility with the target speaker impedance and supply voltage constraints.

Part Context

This component belongs to the PAM8124 product line of high-power audio amplifiers from Diodes Incorporated. It is designed specifically for driving stereo speakers in single-ended configurations or mono speakers in bridge-tied-load setups. The device utilizes a CMOS process to achieve high efficiency and low power dissipation, making it suitable for space-constrained consumer electronics applications.

Replacement Considerations

Consult official manufacturer documentation for confirmed substitute part numbers. Verify pinout compatibility and electrical specifications before implementation.

FAQ

How is the amplifier gain configured?

The gain is set using the GAIN0 and GAIN1 logic input pins, offering four selectable fixed settings: 20dB, 26dB, 32dB, and 36dB.

What protection mechanisms are included?

The device includes thermal protection with auto-recovery at 160°C and short-circuit protection for output-to-output, output-to-ground, and output-to-VCC faults.

Does the amplifier require an external oscillator?

No, the PAM8124 contains an internal oscillator, eliminating the need for external timing components.