MAX9719CEUE+

Audio Amplifiers Overview

The MAX9719CEUE+ is a stereo audio power amplifier from the MAX9718/MAX9719 family, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single supply voltage ranging from 2.7V to 5.5V and delivers 1.4W of continuous average power per channel into a 4Ω load with less than 1% THD+N at a +5V supply. The device features a bridge-tied load (BTL) architecture, differential inputs for improved noise rejection, and internally fixed gain options including 0dB, 3dB, and 6dB. It includes a low-power shutdown mode reducing quiescent current to under 100nA, comprehensive click-and-pop suppression circuitry, and thermal-shutdown protection. The component is housed in a 16-bump UCSP package and operates over an extended temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• Bridge-tied load (BTL) architecture minimizes external component count while delivering high-quality audio amplification.
• Differential input structure enhances noise rejection and provides common-mode rejection capabilities.
• Integrated industry-leading click-and-pop suppression reduces audible artifacts during startup and shutdown sequences.
• Low-power shutdown mode disables bias generators and amplifiers, significantly reducing quiescent current consumption.

Audio Amplifiers Applications

• Mobile phones
• Personal digital assistants (PDAs)
• Portable electronic devices

Audio Amplifiers Procurement Notes

Verify the specific ordering suffix 'CEUE+' against official manufacturer documentation to confirm the exact package type, gain configuration, and temperature rating. Ensure compatibility with the required PCB footprint for the 16-bump UCSP package. Confirm that the selected variant matches the system's gain requirements and shutdown logic needs before finalizing procurement.

Audio Amplifiers Selection Notes

Select this component for portable applications requiring stereo audio output with minimal external components. The internal fixed gain options simplify design and reduce board space. Consider the BTL configuration for higher power efficiency compared to single-ended designs. Verify that the 16-bump UCSP package fits within the mechanical constraints of the target device enclosure.

Audio Amplifiers Part Context

The MAX9719CEUE+ belongs to the MAX9718/MAX9719 series of low-cost mono and stereo audio power amplifiers designed for portable devices. While the MAX9718 offers mono configurations with selectable shutdown polarity, the MAX9719 provides dual-channel stereo amplification. This series is engineered to replace older solutions like the LM4895, offering improved performance and lower power consumption in compact packages suitable for modern mobile electronics.

Audio Amplifiers Replacement Considerations

The datasheet notes that the MAX9718 is pin-compatible with the LM4895. For direct replacements of the MAX9719, verify equivalent stereo BTL amplifiers with similar power output and package dimensions. Cross-reference specific gain settings and shutdown logic requirements when evaluating alternative part numbers.