MAX9718DEBL+T

Audio Amplifiers Overview

The MAX9718DEBL+T is a mono-channel, low-cost audio power amplifier manufactured by Analog Devices (Maxim Integrated). It operates on a single supply voltage ranging from 2.7V to 5.5V and delivers 1.4W of continuous average power into a 4Ω load with less than 1% THD+N at +5V. The device features a differential input structure for improved noise rejection and utilizes a bridge-tied load (BTL) architecture to minimize external component count. It includes an internally fixed gain of 6dB, a low-power shutdown mode reducing quiescent current to under 100nA, and comprehensive click-and-pop suppression circuitry.

Audio Amplifiers Feature Summary

• Differential input structure providing high common-mode rejection and noise immunity
• Integrated bridge-tied load (BTL) architecture eliminating the need for DC-blocking output capacitors
• Internal fixed gain configuration to reduce external component requirements
• Low-power shutdown mode with configurable polarity via SHDM pin

Audio Amplifiers Applications

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

Audio Amplifiers Procurement Notes

Verify the ordering suffix 'BL' corresponds to the 3x3 UCSP package and fixed 6dB gain variant. Confirm lead-free/RoHS compliance indicated by the '+' suffix. Ensure the supplier provides traceability documentation matching the manufacturer's specifications for the -40°C to +85°C temperature range.

Audio Amplifiers Selection Notes

Select this part when a single-channel BTL amplifier is required for portable applications. Choose this specific gain variant if no external feedback resistors are desired. Consider the exposed pad thermal requirements for heat dissipation in compact layouts.

Audio Amplifiers Part Context

This component belongs to the MAX9718/MAX9719 family of low-cost, mono/stereo audio power amplifiers. The MAX9718 series offers mono configurations with selectable gain and shutdown polarity options, while the MAX9719 provides stereo capabilities. Both families share core technologies including industry-leading click-and-pop suppression and high PSRR.

Audio Amplifiers Replacement Considerations

The datasheet identifies the LM4895 as a pin-compatible upgrade target. Verify that the replacement supports the required BTL configuration and gain settings.