EEWORLDEEWORLDEEWORLD

Part Number

Search

MAX9789_09

Description
Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers
File Size499KB,28 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Compare View All

MAX9789_09 Overview

Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers

19-0606; Rev 3; 9/09
Windows Vista-Compliant, Stereo Class AB Speaker
Amplifiers and DirectDrive Headphone Amplifiers
General Description
The MAX9789/MAX9790 combine a stereo, 2W Class AB
speaker power amplifier with a stereo 100mW
DirectDrive
®
headphone amplifier in a single device. The
MAX9789/MAX9790 are designed for use with the
Microsoft Windows Vista
®
operating system and are fully
compliant with Microsoft’s Windows Vista specifications.
The headphone amplifier features Maxim’s patented
DirectDrive architecture that produces a ground-refer-
enced output from a single supply to eliminate the need
for large DC-blocking capacitors, as well as save cost,
board space, and component height. A high +90dB
PSRR and low 0.002% THD+N ensures clean, low-distor-
tion amplification of the audio signal.
Separate speaker and headphone amplifier control
inputs provide independent shutdown of the speaker
and headphone amplifiers, allowing speaker and head-
phone amplifiers to be active simultaneously, if
required. The industry-leading click-and-pop suppres-
sion circuitry reduces audible transients during startup
and shutdown cycles.
The MAX9789 features an internal LDO that can be used
as a clean power supply for a CODEC or other circuits.
The LDO output voltage is set internally at 4.75V or can
be adjusted between 1.21V and 4.75V using a simple
resistive divider. The LDO is protected against thermal
overloads and short circuits while providing 120mA of
continuous output current and can be enabled indepen-
dently of the audio amplifiers.
By disabling the speaker and headphone amplifiers, and
the LDO (for MAX9789), the MAX9789/MAX9790 enter
low-power shutdown mode and draw only 0.3µA.
The MAX9789/MAX9790 operate from a single 4.5V to
5.5V supply and feature thermal-overload and output
short-circuit protection. Devices are specified over the
-40°C to +85°C extended temperature range.
Features
o
Microsoft Windows Vista Compliant
o
Class AB 2W Stereo BTL Speaker Amplifier
o
100mW DirectDrive Headphone Amplifier
Eliminates Costly, Bulky DC-Blocking Capacitors
o
Excellent RF Immunity
o
Integrated 120mA LDO (MAX9789)
o
High +90dB PSRR, Low 0.002% THD+N
o
Low-Power Shutdown Mode
o
Click-and-Pop Suppression
o
Short-Circuit and Thermal-Overload Protection
o
Available in 32-Pin Thin QFN (5mm x 5mm x
0.8mm) Package
MAX9789/MAX9790
Ordering Information
PART
MAX9789AETJ+
MAX9789CETJ+
MAX9790AETJ+
PIN-PACKAGE INTERNAL LDO t
ON
(ms)
32 TQFN-EP*
Yes
100
Yes
Yes
No
25
100
100
32 TQFN-EP*
32 TQFN-EP*
MAX9789BETJ+** 32 TQFN-EP*
MAX9790BETJ+** 32 TQFN-EP*
No
25
Note:
All devices are specified over the -40°C to +85°C extended
temperature range.
+Denotes
a lead-free/RoHS-compliant package.
*EP
= Exposed pad.
**Future
product—contact factory for availability.
Simplified Block Diagrams
SPEAKER SUPPLY
4.5V TO 5.5V
HEADPHONE SUPPLY
3.0V TO 5.5V
SPKR_INR
Applications
Notebook Computers
Tablet PCs
Portable Multimedia Players
Pin Configurations appear at end of data sheet.
U.S. Patent # 7,061,327.
MAX9789
SPKR_INL
HP_INR
HP_INL
SPKR_EN
HP_EN
MUTE
GAIN1
GAIN2
4.5V TO 5.5V
LDO
1.21V TO 4.75V
Windows Vista is a registered trademark of Microsoft Corp.
DirectDrive is a registered trademark of Maxim Integrated
Products, Inc.
Simplified Block Diagrams continued at end of data sheet.
1
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

MAX9789_09 Related Products

MAX9789_09 MAX9789 MAX9789BETJ+ MAX9790 MAX9790BETJ
Description Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers Windows Vista-Compliant, Stereo Class AB Speaker Amplifiers and DirectDrive Headphone Amplifiers
Signal integrity testing and analysis of high-speed FPGA systems
[table][tr][td]1. Introduction With the significant increase in FPGA design speed and capacity, the current popular FPGA chips all provide high-speed buses, such as DDR memory bus, PCI-X bus, and SPI ...
eeleader FPGA/CPLD
MCU keyboard scanning state machine implementation
1. Overview In the process of writing microcontroller programs, keyboards are commonly used as a way to implement human-machine interfaces. The general implementation methods are as follows: 1. Connec...
原野之狼 MCU
[EEWORLD 41st] The community star of August 2012 is announced!
Thank you for your attention and support to the forum. Here we have selected the netizens who have made outstanding contributions to the forum in August.[img]https://bbs.eeworld.com.cn/images/default/...
EEWORLD社区 Suggestions & Announcements
【Uncle T's Library】Embedded Linux Development Tutorial--Zhou Ligong
[i=s]This post was last edited by tyw on 2017-9-20 11:40[/i] I recently found some information about embedded Linux and found this set of tutorials to be the best. I posted it here to share with you. ...
tyw Download Centre
Please ask a question about IEEE802.1Q
Are there any current Ethernet chips that support IEEE802.1Q? I mean, are there any chips that can automatically identify VLANs? If none of them support it, should it be implemented through a switch? ...
探索者 Embedded System
F28335 core board: Core28335 full set of CD data [open source]
Core28335 front view Core28335 front view Core28335 front view Core28335 front view Core28335 front view Core28335 front view Core28335 front view Core28335 front view Core28335 front view Core28335 f...
zswlh Microcontroller MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 520  2552  1880  446  2054  11  52  38  9  42 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号