MAX9718FEBL+T

Audio Amplifiers Overview

The MAX9718FEBL+T is a mono-channel, low-cost audio power amplifier manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single 2.7V to 5.5V supply and delivers 1.4W continuous average power per channel into a 4Ω load with less than 1% THD+N at +5V. The device features a differential input structure for improved noise rejection and includes internal fixed gain options of 0dB, 3dB, or 6dB to reduce component count. It incorporates comprehensive click-and-pop suppression circuitry and offers a low-power shutdown mode that reduces quiescent current consumption to less than 100nA. The part is available in a 9-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 providing high-quality audio amplification.
• Integrated industry-leading click-and-pop suppression circuitry reduces audible artifacts during startup and shutdown.
• Low-power shutdown mode disables bias generators and amplifiers, reducing quiescent current to under 100nA.
• Differential input structure improves noise rejection and provides common-mode rejection capabilities.

Audio Amplifiers Applications

• Mobile Phones
• PDAs
• Portable Devices

Audio Amplifiers Procurement Notes

Verify the specific suffix 'FE' against official documentation to confirm the exact gain configuration and pinout compatibility before procurement. Ensure the selected package variant matches the intended PCB layout requirements. Confirm availability status through authorized distributors as supply levels may fluctuate. Cross-reference the thermal dissipation characteristics with the target application's heat sinking capabilities to ensure reliable operation within the specified temperature range.

Audio Amplifiers Selection Notes

Select this component for portable applications requiring high efficiency and minimal external components. The fixed gain variants simplify design by eliminating external resistors. Consider the BTL configuration for higher output power compared to single-ended designs. Evaluate the thermal performance based on the chosen package type and ambient conditions. Verify that the supply voltage range aligns with the system's power source constraints.

Audio Amplifiers Part Context

This component belongs to the MAX9718/MAX9719 family of low-cost, mono/stereo audio power amplifiers designed for portable devices. The MAX9718 series specifically targets single-channel applications, offering flexibility through adjustable or fixed gain options. These amplifiers are engineered to replace legacy parts like the LM4895, providing improved performance and pin compatibility. The family emphasizes low power consumption and high sound quality in compact packages suitable for space-constrained mobile electronics.

Audio Amplifiers Replacement Considerations

The MAX9718 is pin-compatible with the LM4895. Verify electrical specifications and gain settings when substituting other mono audio amplifiers in the same package type.