Maxim > Products > Audio > MAX9765, MAX9766, MAX9767

MAX9765, MAX9766, MAX9767

750mW Audio Amplifiers with Headphone Amp, Microphone Preamp, and Input Mux

750mW Audio Amplifier with Headphone Amp, Microphone Preamp, and Mux Optimized for Portable Audio Applications

Overview

Technical Documents

Ordering Info

Status

All versions are No Longer Available.

Description

The MAX9765/MAX9766/MAX9767 family combines speaker, headphone, and microphone amplifiers, all in a small thin QFN package. The MAX9765 is targeted at stereo speaker playback applications and includes a stereo bridge-tied load (BTL) speaker amp, stereo headphone amp, single-ended output mic amp, input MUX, and I²C control. The MAX9766 is targeted at mono speaker playback applications and includes a mono BTL speaker amp, stereo headphone amp, differential output mic amp, input MUX, and I²C control. The MAX9767 is targeted at applications that do not require a headphone amp and includes a stereo BTL speaker amp, differential output mic amp, and parallel control.

These devices operate from a single 2.7V to 5.5V supply. A high 95dB PSRR allows these devices to operate from noisy supplies without additional power conditioning. An ultra-low 0.003% THD+N ensures clean, low distortion amplification of the audio signal. Click-and-pop suppression eliminates audible transients on power and shutdown cycles.

In speaker mode, the amplifiers can deliver up to 750mW of continuous average power into a 4Ω load. In headphone mode, the amplifier can deliver up to 65mW of continuous average power into a 16Ω load. The gain of the amplifiers is externally set, allowing maximum flexibility in optimizing output levels for a given load. The MAX9765/MAX9766 also feature a 2:1 input multiplexer, allowing multiple audio sources to be selected. The various functions are controlled by either an I²C-compatible (MAX9765/MAX9766) or simple parallel control interface (MAX9767).

All devices include two low-noise microphone preamps, a differential amp for internal microphones, and a single-ended amplifier for additional external microphones. A microphone bias output is provided, reducing external component count.

The MAX9765/MAX9766/MAX9767 are available in a thermally efficient 32-pin thin QFN package (5mm x 5mm x 0.8mm). All devices have short-circuit and thermal-overload protection (OVP) and are specified over the extended -40°C to +85°C temperature range.

Data Sheet

Download	Rev 2	(PDF, 864kB)
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Key Features

750mW BTL Stereo Speaker Amplifier
65mW Stereo Headphone Amplifier
2.7V to 5.5V Single-Supply Operation
Click-and-Pop Suppression
Low 0.003% THD+N
Low Quiescent Current: 13mA
Low-Power Shutdown Mode: 5µA
MUTE Function
Headphone Sense Input
Stereo 2:1 Input Multiplexer
Optional 2-Wire, I²C-Compatible, or Parallel Interface
Small 32-Pin Thin QFN (5mm x 5mm x 0.8mm) Package

Applications/Uses

Cell Phones
Digital Cameras
Notebook Computers
PDA Audio Systems
Tablet PCs

Product Guides

Audio (PDF)

Video (PDF)

Reliability Reports

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Software/Models

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Ordering Information

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Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9765ETJ		N/A	No Longer Available	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9765ETJ+		N/A	No Longer Available	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9765ETJ+T		N/A	No Longer Available	QFN;32 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9765ETJ-T		N/A	No Longer Available	QFN;32 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9766ETJ		N/A	No Longer Available	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9766ETJ+		N/A	No Longer Available	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9766ETJ+T		N/A	No Longer Available	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9766ETJ-T		N/A	No Longer Available	QFN;32 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9767ETJ		N/A	No Longer Available	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9767ETJ+		N/A	No Longer Available	TQFN;32 pin;26 mm² Outline Drawing:21-0140 (PDF) Land Pattern: 90-0012 (PDF) Use pkgcode/variation: T3255+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9767ETJ+T		N/A	No Longer Available	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9767ETJ-T		N/A	No Longer Available	QFN;32 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Products with Similar Part Numbers

MAX9765EVCMAXQU, MAX9765EVKIT

Evaluation System/Evaluation Kit for the MAX9765

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-2832 Rev 2; 2007-04-19
This page last modified: 2010-05-14