TPA6203A1DRB

Overview

The TPA6203A1DRB is a 1.25-W mono fully differential Class-AB audio power amplifier designed for wireless handsets and PDAs. It operates from a single 2.5-V to 5.5-V supply, delivering 1.25 W into an 8-Ω load at 5 V with 1% THD+N. The device draws only 1.7 mA of quiescent current and features shutdown control consuming less than 10 μA. It utilizes a space-saving 3 mm x 3 mm SON-8 (DRB) package.

Feature Summary

• Fully differential design reduces RF rectification and eliminates input coupling capacitors.
• High power supply rejection ratio improves performance in noisy environments.
• Fast start-up time minimizes pop noise during activation.
• Optional bypass capacitor simplifies circuit design.

Applications

• Wireless handsets
• Cellular phones
• Personal Digital Assistants

Procurement Notes

Verify the specific DRB package variant against the manufacturer's latest datasheet to ensure compatibility with your PCB footprint and thermal requirements. Confirm that the ordering suffix matches the exact pin configuration and material specifications required for your assembly process. Cross-reference the part number with official distributor catalogs to validate authenticity and current production status before finalizing procurement.

Selection Notes

Select this component when a compact, low-power solution is needed for driving speakers in battery-operated devices. The fully differential architecture allows for direct connection to DACs without large coupling capacitors. Ensure the application voltage stays within the 2.5 V to 5.5 V range and that the load impedance matches the amplifier's capabilities for optimal power delivery and thermal performance.

Part Context

This device belongs to Texas Instruments' TPA6203A1 series of audio amplifiers. It is specifically engineered for portable electronics where board space and power consumption are critical constraints. The DRB package offers a robust thermal solution while maintaining a small footprint, making it suitable for dense PCB layouts in consumer mobile devices.

Replacement Considerations

Check for TPA6203A1DGN or TPA6203A1ZQVR if different package styles are preferred. Verify electrical equivalence and pinout compatibility before substitution.

FAQ

Does the TPA6203A1DRB require input coupling capacitors?

No, the fully differential design allows inputs to be biased directly, eliminating the need for input coupling capacitors if the source is properly biased.

What is the typical quiescent current consumption?

The typical quiescent supply current is 1.7 mA.