TPA2034D1YZFT

Overview

The TPA2034D1YZFT is a 2.75-W fixed-gain mono filter-free Class-D audio power amplifier from Texas Instruments, housed in a 9-ball WCSP (YZF) package. It operates on a single supply voltage ranging from 2.5 V to 5.5 V and features a fixed gain of 4 V/V (12 dB). The device delivers high efficiency, reaching 88% at 400 mW into an 8-Ω load, with a quiescent current of 3.0 mA and a shutdown current of 0.5 μA. It includes thermal and short-circuit protection, pop suppression, and differential inputs.

Feature Summary

• Fully differential architecture eliminates the need for input coupling capacitors and mid-supply bypass capacitors when used with properly biased sources.
• High RF immunity provided by differential design, effectively canceling GSM interference signals picked up on traces.
• Integrated thermal and short-circuit protection safeguards the device during fault conditions.
• Fast startup time with minimal pop noise generation suitable for battery-powered mobile devices.

Applications

• Wireless handsets
• Personal Digital Assistants (PDAs)
• Mobile devices requiring space-constrained audio amplification

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging containing 250 units, distinct from the 'R' suffix which denotes a reel of 3000 units. Confirm the YZF package type matches the required wafer chip scale footprint. Ensure the fixed gain version corresponds to the system requirement for 4 V/V amplification rather than other variants in the family.

Selection Notes

Select this component when a fixed gain of 4 V/V is required for the audio signal path. The fully differential input allows direct connection to differential sources without external biasing components. Consider the 9-ball DSBGA package constraints for PCB layout. Verify that the application environment does not require output filtering beyond ferrite beads for long speaker traces.

Part Context

This part belongs to the TPA203xD1 family of NanoFree™ Class-D amplifiers. It shares the same pinout as the TPA2010D1 but integrates internal gain-setting resistors. Other family members include the TPA2032D1 (2 V/V gain) and TPA2033D1 (3 V/V gain), all offering identical performance characteristics except for their fixed voltage gains.

Replacement Considerations

TPA2034D1YZFR serves as the equivalent alternative differing only in reel quantity packaging.

FAQ

Does the TPA2034D1 require input coupling capacitors?

No, input coupling capacitors are not required if the differential source is biased within the common-mode input voltage range. They are necessary only if using a single-ended source or if the input bias falls outside the recommended range.

What is the purpose of the SHUTDOWN pin?

The SHUTDOWN pin controls the device's operating state. Driving this pin low places the device into shutdown mode, reducing the supply current to approximately 0.5 μA.