DRV632PW

Audio Special Purpose Overview

The DRV632PW is a stereo DirectPath audio line driver from Texas Instruments, housed in a 14-pin TSSOP package. It delivers 2 Vrms into a 10 kΩ load using a single 3.3 V supply, eliminating the need for output DC-blocking capacitors. The device features differential inputs and single-ended outputs with adjustable gain ranging from ±1 V/V to ±10 V/V via external resistors. Key electrical parameters include a typical supply current of 14 mA at 3.3 V, an output offset voltage under 1 mV, and a signal-to-noise ratio exceeding 90 dB. It operates within a temperature range of -40°C to +85°C.

Audio Special Purpose Feature Summary

• DirectPath technology enables ground-referenced outputs, removing the need for bulky DC-blocking capacitors to save board space and cost.
• Supports adjustable gain from ±1 V/V to ±10 V/V per channel using external resistors.
• Integrates active mute control and undervoltage protection for pop-free audio switching.
• Includes internal charge pump to generate negative rail for split-supply performance on a single 3V–3.6V source.

Audio Special Purpose Applications

• Set-Top Boxes
• Blu-ray Disc and DVD Players
• LCD and PDP TVs
• Mini/Micro Combo Systems
• Sound Cards

Audio Special Purpose Procurement Notes

Verify the ordering suffix 'PW' corresponds to the 14-TSSOP tube packaging as specified in the datasheet. Confirm that the application design accommodates the required external components, including charge-pump flying capacitors and input blocking capacitors, to ensure optimal performance and stability.

Audio Special Purpose Selection Notes

Select this component when designing single-supply audio systems requiring high output swing without large output capacitors. Ensure the load impedance meets the minimum 600 Ω requirement. Verify that the available supply voltage stays within the 3 V to 3.6 V range to maintain specified THD+N and SNR performance levels.

Audio Special Purpose Part Context

The DRV632 belongs to TI's DirectPath family of audio line drivers. It shares architectural similarities with the DRV612 but offers adjustable gain rather than fixed gain. This series is designed to replace conventional line drivers that require split rails or large coupling capacitors, simplifying the bill of materials for portable and consumer audio electronics.

Audio Special Purpose Replacement Considerations

The DRV632PW is functionally compatible with the DRV632PWR (Tape & Reel) for identical electrical performance. For fixed-gain applications, the DRV612 serves as a related alternative within the same product family.