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PDF MAX9761 Data sheet ( Hoja de datos )
| Número de pieza | MAX9761 | |
| Descripción | (MAX9760 - MAX9763) Stereo 3W Audio Power Amplifiers | |
| Fabricantes | Maxim Integrated Products | |
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Hay una vista previa y un enlace de descarga de MAX9761 (archivo pdf) en la parte inferior de esta página. Total 31 Páginas | ||
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19-2744; Rev 0; 1/03
Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
www.datasheet4u.com
General Description
The MAX9760–MAX9763 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 VOS (minimizes DC current drain
through the speakers), low 13mA supply current, and a
10µA 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 3Ω load. In head-
phone mode, the amplifier can deliver up to 200mW of
continuous average power into a 16Ω 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 I2C-compatible or simple parallel
control interface.
The MAX9760–MAX9763 are available in either a ther-
mally efficient 28-pin thin QFN package (5mm ✕ 5mm ✕
0.8mm) or a TSSOP-EP package. All devices have ther-
mal overload protection (OVP) and are specified over
the extended -40°C to +85°C temperature range.
Applications
Notebooks
Portable DVD Players
Tablet PCs
PC Audio Peripherals
Camcorders
Pin Configurations and Functional Diagrams appear at end
of data sheet.
Features
o Industry-Leading, Ultra-High 100dB PSRR
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: 10µA
o MUTE Function
o Headphone Sense Input
o Stereo 2:1 Input Multiplexer
o Optional 2-Wire, I2C-Compatible or Parallel
Interface
o Tiny 28-Pin Thin QFN (5mm ✕ 5mm ✕ 0.8mm) and
TSSOP-EP Packages
Ordering Information
PART
TEMP RANGE
MAX9760ETI
-40°C to +85°C
MAX9760EUI
-40°C to +85°C
*EP = Exposed paddle.
PIN-PACKAGE
28 Thin QFN-EP*
28 TSSOP-EP*
Ordering Information continued at end of data sheet.
Simplified Block Diagram
SINGLE SUPPLY
4.5V TO 5.5V
LEFT IN1
LEFT IN2
RIGHT IN1
RIGHT IN2
CONTROL
SE/
BTL
I2C-
COMPATIBLE
MAX9760
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1 page  
Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
www.datasheet4u.com
(VDD = PVDD = 5V, TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
1
RL = 3Ω
AV = 2V/V
0.1
POUT = 500mW POUT = 1W
0.01
POUT = 2W POUT = 2.5W
0.001
10
100 1k 10k
FREQUENCY (Hz)
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
1
RL = 4Ω
AV = 4V/V
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
1
RL = 3Ω
AV = 4V/V
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
1
RL = 4Ω
AV = 2V/V
0.1
POUT = 500mW POUT = 1W
0.01
POUT = 2W
POUT = 2.5W
0.001
10
100 1k 10k
FREQUENCY (Hz)
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
1
RL = 8Ω
AV = 2V/V
0.1
POUT = 250mW POUT = 500mW
0.01
POUT = 1W
POUT = 2W
0.001
10
100 1k 10k
FREQUENCY (Hz)
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (SPEAKER MODE)
1
RL = 8Ω
AV = 4V/V
0.1
POUT = 250mW POUT = 500mW
0.01
POUT = 1W
POUT = 2W
0.001
10
100 1k 10k
FREQUENCY (Hz)
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (SPEAKER MODE)
100
AV = 2V/V
RL = 3Ω
10
0.1
POUT = 250mW POUT = 500mW
0.01
0.001
10
POUT = 1W POUT = 1.2W
100 1k 10k
FREQUENCY (Hz)
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (SPEAKER MODE)
100
AV = 4V/V
RL = 3Ω
10
0.1
POUT = 250mW POUT = 500mW
0.01
0.001
10
POUT = 1W POUT = 1.2W
100 1k 10k
FREQUENCY (Hz)
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (SPEAKER MODE)
100
AV = 2V/V
RL = 4Ω
10
1
0.1
0.01
0.001
0
f = 10kHz
f = 20Hz
f = 1kHz
123
OUTPUT POWER (W)
1 f = 10kHz
f = 1kHz
0.1
0.01
f = 20Hz
0.001
40
123
OUTPUT POWER (W)
1
0.1
f = 10kHz
f = 1kHz
0.01
f = 20Hz
0.001
4 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
OUTPUT POWER (W)
_______________________________________________________________________________________ 5
5 Page 
Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
www.datasheet4u.com
Pin Description
MAX9760
QFN TSSOP
1 26
2 27
3 28
41
5
6
7
8
9, 13,
23, 27
2
3
4
5
6, 10,
20, 24
PIN
MAX9761
MAX9762
QFN TSSOP QFN TSSOP
— — 1 26
— — 2 27
3 28 3 28
MAX9763
QFN TSSOP
——
——
3 28
4 141 4 1
5
6
7
8
9, 13,
23, 27
2
3
4
5
6, 10, 20,
24
5
6
7
8
9, 23,
27
252
363
474
585
6, 20, 24 9, 23, 27 6, 20, 24
NAME
SDA
INT
VDD
SVDD
INL1
INL2
GAINLA
GAINLB
PGND
FUNCTION
Bidirectional Serial Data I/O
µC Interrupt Output
Power Supply
Standby Power Supply. Connect
to a standby power supply that is
always on, or connect to VDD
through a Schottky diode and
bypass with 220µF capacitor to
GND. Short to VDD if clickless
operation is not essential.
Left-Channel Input 1
Left-Channel Input 2
Left-Channel Gain Set A
Left-Channel Gain Set B
Power Ground
10
11, 25
12
14
15
7 10 7 10 7
8, 22
9
11, 25
12
8, 22
9
11, 25
—
8, 22
—
11 14 11 14 11
12 — — 15 12
10
11, 25
—
14
—
7
8, 22
—
11
—
OUTL+
PVDD
OUTL-
SHDN
ADD
Left-Channel Bridged Amplifier
Positive Output. OUTL+ also
serves as the left-channel
headphone amplifier output.
Output Amplifier Power Supply
Left-Channel Bridged Amplifier
Negative Output
Active-Low Shutdown. Connect
SHDN to VDD for normal operation.
Address Select. A logic high sets
the address LSB to 1, a logic low
sets the address LSB to zero.
Headphone Sense Input. A logic
high configures the device as a
16 13 16 13 16 13 16 13 HPS single-ended headphone amp. A
logic low configures the device as
a BTL speaker amp.
DC Bias Bypass. See BIAS
17
14 17 14 17 14
17
14
BIAS
Capacitor Selection section for
capacitor selection. Connect
CBIAS from BIAS to GND.
18 15 18 15 13 10 13 10 GND Ground
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 31 Páginas | |
| PDF Descargar | [ Datasheet MAX9761.PDF ] | |
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