MAX97200AEWC+T

Audio Amplifiers Overview

The MAX97200AEWC+T is a low-power, dual-mode Class H DirectDrive headphone amplifier operating from a single 1.8V supply. It features second-generation DirectDrive technology with an internal charge pump that dynamically switches between QPVIN/2 and QPVIN modes to optimize efficiency and output power. The device delivers 34mW into 32Ω and 45mW into 16Ω with THD+N of 1%. It includes a gain of 3dB, 105dB SNR, and ultra-low offset voltage for superior click-and-pop performance. Packaged in a compact 12-bump WLP (1.27mm x 1.65mm), it operates over the -40°C to +85°C temperature range.

Audio Amplifiers Feature Summary

• Second-generation DirectDrive architecture eliminates large DC-blocking capacitors by generating an internal negative rail.
• Dual-mode Class H operation dynamically adjusts charge-pump voltage rails based on signal amplitude for optimal power efficiency.
• Industry-leading click-and-pop suppression ensures high-fidelity audio during startup and shutdown transitions.
• Ultra-compact 12-bump wafer-level package minimizes board space requirements.

Audio Amplifiers Applications

• Cellular phones
• Smartphones
• MP3 players
• VoIP phones

Audio Amplifiers Procurement Notes

Verify the specific suffix 'A' indicates a fixed 3dB voltage gain configuration, distinct from the 'B' variant which offers unity gain. Confirm RoHS compliance via the '+' designation. Ensure the 12-bump WLP footprint matches the design layout. Validate thermal dissipation capabilities within the specified ambient temperature range.

Audio Amplifiers Selection Notes

Select this component when board space is constrained and battery life is critical. The fixed 3dB gain suits applications requiring signal amplification without external resistors. Consider the dynamic charge pump for varying load conditions. Verify input coupling capacitor values to maintain desired low-frequency response characteristics.

Audio Amplifiers Part Context

This part belongs to the MAX97200 series of DirectDrive headphone amplifiers. It utilizes Maxim's proprietary Class H technology to enhance efficiency compared to traditional linear drivers. The series is designed specifically for portable consumer electronics where power conservation and audio fidelity are paramount.

Audio Amplifiers Replacement Considerations

MAX97200BEWC+T

Audio Amplifiers FAQ

How does the Dual Mode charge pump improve efficiency?

The charge pump switches between QPVIN/2 for low-signal levels to minimize power consumption and QPVIN for high-signal demands to maximize output power swing.

What is the function of the SHDN pin?

Driving the SHDN pin low disables the drive amplifiers and charge pump, reducing quiescent current to 0.2µA and extending battery life.