MAX9717CEUA+

Audio Amplifiers Overview

The MAX9717CEUA+ is a mono audio power amplifier in an 8-pin µMAX package. It delivers 1.4W continuous power into a 4Ω load at 5V supply with less than 1% THD+N, and 1W into an 8Ω load. Operating from a single 2.7V to 5.5V supply, it features internally fixed gain of 9dB. The device includes a low-power shutdown mode reducing quiescent current to under 10nA, comprehensive click-and-pop suppression, and a headphone sense input for BTL/SE switching.

Audio Amplifiers Feature Summary

• Bridge-tied load architecture minimizes external component count while providing high-quality audio reproduction
• Headphone sense input automatically disables the BTL slave driver to drive headphones as a single-ended load
• Internally fixed gain reduces component count and simplifies design
• Low-power shutdown mode disables bias generator and amplifiers to minimize current consumption

Audio Amplifiers Applications

• Mobile phones
• PDAs
• Portable devices

Audio Amplifiers Procurement Notes

Verify the specific suffix 'EUA+' corresponds to the lead-free/RoHS-compliant 8-pin µMAX package variant. Confirm the internal gain setting matches the required circuit design, as this part has a fixed 9dB gain unlike adjustable variants. Ensure the application supports the specified operating temperature range and supply voltage requirements.

Audio Amplifiers Selection Notes

Select this part when a fixed 9dB gain is required for mono speaker applications. It is suitable for designs needing automatic headphone detection via the BTL/SE pin. Consider thermal dissipation limits if driving low-impedance loads at high volumes. Verify compatibility with the system's single-supply voltage range between 2.7V and 5.5V.

Audio Amplifiers Part Context

This component belongs to the MAX9716/MAX9717 family of low-cost, mono, 1.4W BTL audio power amplifiers. The MAX9717 variants specifically include a headphone sense input, distinguishing them from the MAX9716. The 'C' suffix indicates an internally fixed gain of 9dB, while 'EUA+' denotes the 8-pin µMAX package with lead-free/RoHS compliance.

Audio Amplifiers Replacement Considerations

MAX9717BEUA+ (Fixed 6dB Gain)

Audio Amplifiers FAQ

How does the MAX9717CEUA+ handle headphone connection?

It uses the BTL/SE input to sense when a headphone is connected. Driving this pin high disables the BTL slave driver, muting the speaker and allowing the device to drive the headphone as a single-ended load.

What is the internal gain setting for the MAX9717CEUA+?

The MAX9717CEUA+ features an internally fixed gain of 9dB. This eliminates the need for external gain-setting resistors, reducing the component count compared to adjustable gain versions.