DRV612PWR

Audio Amplifiers Overview

The DRV612PWR is a single-ended, 2-Vrms stereo line driver utilizing DirectPath technology. It operates from a single 3 V to 3.6 V supply and eliminates the need for output DC-blocking capacitors. The device features programmable gain settings ranging from -1x to -10x via an external resistor. Key electrical parameters include a THD+N of less than 0.003% at 10-kΩ load, a signal-to-noise ratio exceeding 105 dB, and a typical noise voltage under 12 μVrms. It provides active mute with over 80-dB attenuation and includes short-circuit and thermal protection.

Audio Amplifiers Feature Summary

• DirectPath architecture generates a negative supply rail internally to enable ground-biased outputs without external DC-blocking capacitors.
• Programmable gain selection allows designers to choose from 13 internal gain values using a single external resistor.
• Built-in active mute control provides pop-free on/off switching with significant signal attenuation.
• Outputs feature ±8-kV HBM ESD protection and integrated short-circuit and thermal shutdown mechanisms.

Audio Amplifiers Applications

• PDP and LCD TVs
• DVD Players
• Mini and Micro Combo Systems
• Soundcards

Audio Amplifiers Procurement Notes

Verify the package type matches the specific order code; the PWR suffix indicates a 14-pin TSSOP package. Confirm that the application design accommodates the required charge pump flying capacitor and decoupling components as specified in the datasheet. Ensure the MUTE pin logic levels align with the driving controller during power-up sequences to prevent audible pops.

Audio Amplifiers Selection Notes

Select this component for designs requiring low component count and board space reduction by eliminating output coupling capacitors. It is suitable for single-supply systems where split-rail supplies are unavailable. Consider the programmable gain range when matching codec output levels. Verify that the load impedance falls within the recommended operating conditions for optimal performance.

Audio Amplifiers Part Context

The DRV612 belongs to Texas Instruments' DirectPath line driver family, designed to simplify audio circuit layouts. It shares footprint compatibility with the TPA6139A2 headphone amplifier, allowing for flexible PCB design options. The device integrates a charge pump to create a virtual negative rail, enabling full-swing operation from a standard 3.3 V supply.

Audio Amplifiers Replacement Considerations

The DRV612 is footprint compatible with the TPA6139A2. Designers may substitute one for the other if the application requires a headphone amplifier instead of a line driver, provided the pinout alignment is verified.