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MAX9761 Datasheet

  • MAX9761

  • "Stereo 3W Audio Power Amplifiers with Headphone Drive, Inpu...

  • Maxim   Maxim

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19-2744; Rev 0; 1/03
Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
General Description
The MAX9760鈥揗AX9763 family combines a stereo or
mono 3W bridge-tied load (BTL) audio power amplifier,
stereo single-ended headphone amplifier, headphone
sensing, and a 2:1 input multiplexer all in a tiny 28-pin
thin QFN package. These devices operate from a sin-
gle 4.5V to 5.5V supply and feature an industry-leading
100dB PSRR, allowing these devices to operate from
noisy supplies without the addition of a linear regulator.
An ultra-low 0.002% THD+N ensures clean, low-distor-
tion amplification of the audio signal. Patented click-
and-pop suppression eliminates audible transients on
power and shutdown cycles. Power-saving features
include low 4mV V
OS
(minimizes DC current drain
through the speakers), low 13mA supply current, and a
10碌A(chǔ) shutdown mode. A MUTE function allows the out-
puts to be quickly enabled or disabled.
A headphone sense input detects the presence of a
headphone jack and automatically configures the
amplifiers for either speaker or headphone mode. In
speaker mode, the amplifiers can deliver up to 3W of
continuous average power into a 3鈩?load. In head-
phone mode, the amplifier can deliver up to 200mW of
continuous average power into a 16鈩?load. The gain of
the amplifiers is externally set, allowing maximum flexi-
bility in optimizing output levels for a given load. The
amplifiers also feature a 2:1 input multiplexer, allowing
multiple audio sources to be selected. The multiplexer
can also be used to compensate for limitations in the
frequency response of the loud speakers by selecting
an external equalizer network. The various functions are
controlled by either an I
2
C-compatible or simple parallel
control interface.
The MAX9760鈥揗AX9763 are available in either a ther-
mally efficient 28-pin thin QFN package (5mm
鉁?/div>
5mm
鉁?/div>
0.8mm) or a TSSOP-EP package. All devices have ther-
mal overload protection (OVP) and are specified over
the extended -40擄C to +85擄C temperature range.
o
PC99/01 Compliant
o
3W BTL Stereo Speaker Amplifier
o
200mW Stereo Headphone Amplifier
o
Low 0.002% THD+N
o
Patented Click-and-Pop Suppression
o
ESD-Protected Outputs
o
Low Quiescent Current: 13mA
o
Low-Power Shutdown Mode: 10碌A(chǔ)
o
MUTE Function
o
Headphone Sense Input
o
Stereo 2:1 Input Multiplexer
o
Optional 2-Wire, I
2
C-Compatible or Parallel
Interface
o
Tiny 28-Pin Thin QFN (5mm
鉁?/div>
5mm
鉁?/div>
0.8mm) and
TSSOP-EP Packages
Features
o
Industry-Leading, Ultra-High 100dB PSRR
MAX9760鈥揗AX9763
Ordering Information
PART
MAX9760ETI
MAX9760EUI
TEMP RANGE
-40擄C to +85擄C
-40擄C to +85擄C
PIN-PACKAGE
28 Thin QFN-EP*
28 TSSOP-EP*
*EP = Exposed paddle.
Ordering Information continued at end of data sheet.
Simplified Block Diagram
SINGLE SUPPLY
4.5V TO 5.5V
Applications
Notebooks
Portable DVD Players
Tablet PCs
PC Audio Peripherals
Camcorders
LEFT IN
1
LEFT IN
2
SE/
BTL
RIGHT IN
1
RIGHT IN
2
CONTROL
I
2
C-
COMPATIBLE
Pin Configurations and Functional Diagrams appear at end
of data sheet.
MAX9760
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

MAX9761 PDF文件相關(guān)型號

MAX9762,MAX9763

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