DRV612RGTR

Audio Amplifiers Overview

The DRV612RGTR is a single-ended, 2-Vrms stereo line driver utilizing DirectPath technology to eliminate output DC-blocking capacitors. It operates from a single 3-V to 3.6-V supply, using an internal charge pump to generate a negative rail for ground-biased outputs. The device features programmable fixed gain via a single resistor, offering 13 settings from -1x to -10x. Key electrical parameters include an SNR greater than 105 dB at -1x gain and THD+N less than 0.003% into a 10-kΩ load. It provides active mute with over 80-dB attenuation and ±8-kV HBM ESD protection on outputs.

Audio Amplifiers Feature Summary

• DirectPath architecture eliminates the need for bulky output DC-blocking capacitors by generating an internal negative supply rail.
• Programmable gain selection reduces component count by allowing designers to choose from 13 internal gain values using a single external resistor.
• Built-in active mute control ensures pop-free turn-on and turn-off with significant signal attenuation.
• Outputs feature robust electrostatic discharge protection rated at ±8 kV human-body model.

Audio Amplifiers Applications

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

Audio Amplifiers Procurement Notes

Verify the ordering suffix 'RGTR' corresponds to the specific tape-and-reel packaging configuration required for automated assembly processes. Confirm that the selected package variant matches the intended PCB footprint constraints. Ensure the design accounts for the thermal characteristics associated with the VQFN package if applicable. Cross-reference the datasheet revision date to confirm compatibility with current manufacturing standards.

Audio Amplifiers Selection Notes

Select this component when board space and cost reduction are critical in single-supply audio designs. It is suitable for applications requiring high fidelity without split-rail power supplies. Consider the programmable gain pin for flexibility in matching codec output levels. Evaluate the thermal performance requirements against the junction-to-ambient resistance metrics provided in the datasheet specifications.

Audio Amplifiers Part Context

The DRV612 is part of Texas Instruments' DirectPath line driver family, designed to simplify audio circuitry by removing large passive components. It serves as a footprint-compatible alternative to headphone drivers like the TPA6139A2, allowing for flexible PCB layout strategies. The device integrates charge pump functionality to enable ground-referenced outputs from a low-voltage single supply.

Audio Amplifiers Replacement Considerations

The DRV612 is footprint compatible with the TPA6139A2 stereo headphone driver. Designers can utilize the same PCB layout for different stuffing options depending on whether a line driver or headphone amplifier is required. Verify pinout alignment before substitution to ensure functional equivalence in the target application.

Audio Amplifiers FAQ

How is the gain value determined for the DRV612?

The gain is set by connecting a single external resistor between the GAIN pin and ground. The device offers 13 selectable gain steps ranging from -1x to -10x based on the resistor value used.

Does the DRV612 require external DC-blocking capacitors at the output?

No, the DirectPath technology allows the DRV612 to produce a clean, ground-biased output without the need for costly and space-consuming output DC-blocking capacitors.

What is the function of the MUTE pin?

The MUTE pin provides active mute control with more than 80-dB attenuation. Pulling this pin low activates mute mode, ensuring pop-free operation during power-up and power-down sequences.