MAX9761EVKIT Maxim Integrated, MAX9761EVKIT Datasheet

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MAX9761EVKIT

Manufacturer Part Number
MAX9761EVKIT
Description
Amplifier IC Development Tools
Manufacturer
Maxim Integrated
Series
MAX9760, MAX9761, MAX9762, MAX9763r
Datasheet
1.MAX9763ETI.pdf (31 pages)
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. Click-and-pop
suppression eliminates audible transients on power and
shutdown cycles. Power-saving features include low
4mV V
speakers), low 13mA supply current, and a 10µA shut-
down mode. A MUTE function allows the outputs 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 I
control interface.
The MAX9760–MAX9763 are available in either a ther-
mally efficient 28-pin thin QFN package (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.
19-2744; Rev 0; 1/03
Pin Configurations and Functional Diagrams appear at end
of data sheet.
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.
Notebooks
Portable DVD Players
Tablet PCs
PC Audio Peripherals
Camcorders
OS
(minimizes DC current drain through the
________________________________________________________________ Maxim Integrated Products
Stereo 3W Audio Power Amplifiers with
General Description
2
C-compatible or simple parallel
Applications
Headphone Drive and Input Mux
✕
5mm
✕
♦ Industry-Leading, Ultra-High 100dB PSRR
♦ PC99/01 Compliant
♦ 3W BTL Stereo Speaker Amplifier
♦ 200mW Stereo Headphone Amplifier
♦ Low 0.002% THD+N
♦ Click-and-Pop Suppression
♦ ESD-Protected Outputs
♦ Low Quiescent Current: 13mA
♦ Low-Power Shutdown Mode: 10µA
♦ MUTE Function
♦ Headphone Sense Input
♦ Stereo 2:1 Input Multiplexer
♦ Optional 2-Wire, I
♦ Tiny 28-Pin Thin QFN (5mm
*EP = Exposed paddle.
Ordering Information continued at end of data sheet.
MAX9760ETI
MAX9760EUI
RIGHT IN
RIGHT IN
CONTROL
Interface
TSSOP-EP Packages
LEFT IN
LEFT IN
PART
1
2
1
2
Simplified Block Diagram
COMPATIBLE
BTL
SE/
I
2
C-
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
SINGLE SUPPLY
2
4.5V TO 5.5V
C-Compatible or Parallel
Ordering Information
MAX9760
✕
5mm
PIN-PACKAGE
28 Thin QFN-EP*
28 TSSOP-EP*
✕
Features
0.8mm) and
1

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MAX9761EVKIT Summary of contents

Page 1

... PC Audio Peripherals Camcorders Pin Configurations and Functional Diagrams appear at end of data sheet. ________________________________________________________________ Maxim Integrated Products 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. Headphone Drive and Input Mux ♦ Industry-Leading, Ultra-High 100dB PSRR ♦ ...

Page 2

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................................+ GND .........................................................................+ .........................................................................-0. .......................................................................±0. PGND to GND.....................................................................±0.3V All ...

Page 3

Stereo 3W Audio Power Amplifiers with ELECTRICAL CHARACTERISTICS (continued) = 5.0V, GND = PGND = 0V, SHDN = 5V noted. Typical values are +25°C.) (Note 1) A PARAMETER SYMBOL OUTPUT AMPLIFIERS ...

Page 4

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux ELECTRICAL CHARACTERISTICS (continued) = 5.0V, GND = PGND = 0V, SHDN = 5V noted. Typical values are +25°C.) (Note 1) ...

Page 5

Stereo 3W Audio Power Amplifiers with ( 5V +25°C, unless otherwise noted TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY (SPEAKER MODE 3Ω 2V/V V 0.1 P ...

Page 6

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux ( 5V +25°C, unless otherwise noted TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER (SPEAKER MODE) 100 A = 4V/V V ...

Page 7

Stereo 3W Audio Power Amplifiers with ( 5V +25°C, unless otherwise noted POWER-SUPPLY REJECTION RATIO vs. FREQUENCY (SPEAKER MODE 200mV RIPPLE P 100 10 ...

Page 8

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux ( 5V +25°C, unless otherwise noted TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY (HEADPHONE MODE 16Ω ...

Page 9

Stereo 3W Audio Power Amplifiers with ( 5V +25°C, unless otherwise noted OUTPUT POWER vs. LOAD RESISTANCE (HEADPHONE MODE) 600 f = 1kHz 500 THD+N = 10% 400 300 200 THD+N = ...

Page 10

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux ( 5V +25°C, unless otherwise noted ENTERING POWER-DOWN (HEADPHONE MODE OUT_+ HP JACK 100ms/div R = 16Ω L INPUT ...

Page 11

Stereo 3W Audio Power Amplifiers with PIN MAX9760 MAX9761 QFN TSSOP QFN TSSOP 1 26 — — — — ...

Page 12

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux MAX9760 MAX9761 QFN TSSOP QFN TSSOP ...

Page 13

Stereo 3W Audio Power Amplifiers with 15kΩ AUDIO INPUT 30kΩ Figure 1. Using the Input Multiplexer for Gain Setting When configured as a headphone (single-ended) ampli- fier, the slave amplifier is disabled, muting the speaker and the main amplifier drives ...

Page 14

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux GND. Driving SHDN low places the devices into shut- down mode, disables the interface, and resets the I registers to a default state. A logic high on SHDN enables ...

Page 15

Stereo 3W Audio Power Amplifiers with SDA t SU, DAT t LOW SCL t HIGH t HD, STA t R START CONDITION Figure 3. 2-Wire Serial Interface Timing Diagram The clickless power-down cycle only occurs when the device is in ...

Page 16

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux SCL SDA STOP START LEGAL STOP CONDITION SCL SDA START ILLEGAL STOP ILLEGAL EARLY STOP CONDITION Figure 5. Early STOP Condition Figure 6. ...

Page 17

Stereo 3W Audio Power Amplifiers with S ADDRESS 7 BITS SLAVE ADDRESS. SELECTS DEVICE. S ADDRESS 7 BITS SLAVE ADDRESS. SELECTS DEVICE. Figure 7. Write/Read Data Format Example 2 Table Slave ...

Page 18

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux Table 5. Control Register Format REGISTER 0000 0011 ADDRESS BIT NAME VALUE 7 X Don’t Care 6 X Don’t Care 5 X Don’t Care 0* Speaker mode selected 4 ...

Page 19

Stereo 3W Audio Power Amplifiers with Table 6. Status Register Format REGISTER ADDRESS BIT NAME 7 THRM 6 AMPR- 5 AMPR+ 4 AMPL- 3 AMPL+ 2 HPSTS When the MAX9760/MAX9762 are configured to auto- matically detect ...

Page 20

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux Component Selection Gain-Setting Resistors External feedback components set the gain of the MAX9760–MAX9763. Resistor R sets the gain of the IN input amplifier (A ) and resistor R VIN ...

Page 21

Stereo 3W Audio Power Amplifiers with BIAS Figure 9. Bass Boost Circuit depending on the status of the gain control input. The stereo MAX9760/MAX9761 feature two gain options per channel. The ...

Page 22

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux AUX_IN OUT BIAS MAX4060 CODEC IN+ IN- MICROCONTROLLER 22 ______________________________________________________________________________________ Typical Application Circuit V DD 0.1µ 0.047µF BIAS SV DD 1µF GAINLB GAINLA 15kΩ OUTL+ ...

Page 23

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux PV DD AUDIO INL1 2:1 INPUT INPUT INL2 AUDIO MUX INPUT BIAS BIAS AUDIO INR1 2:1 INPUT INPUT INR2 AUDIO MUX INPUT SHDN SCL SDA LOGIC ADD INT MAX9760 ...

Page 24

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux INL1 INL2 BIAS INR1 INR2 SHDN MUTE HP_EN GAINA/B IN1/IN2 24 ______________________________________________________________________________________ Functional Diagrams (continued GAIN Ω 10k SET MUX 2:1 Ω 10k ...

Page 25

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux INR1 2:1 MIXER INPUT INR2 MUX BIAS BIAS INL1 2:1 INPUT INL2 MUX SHDN SCL SDA LOGIC ADD INT MAX9762 ______________________________________________________________________________________ Functional Diagrams (continued) SV ...

Page 26

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux INR1 INR2 BIAS INL1 INL2 SHDN HP_EN MUTE IN1/IN2 GAINA/B 26 ______________________________________________________________________________________ Functional Diagrams (continued Ω 10k 2:1 MIXER 10k INPUT MUX BIAS ...

Page 27

Stereo 3W Audio Power Amplifiers with TOP VIEW SDA 1 INT MAX9760 5 INL1 6 INL2 GAINLA 7 THIN QFN INL1 2 27 INT INL2 3 26 SDA ...

Page 28

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux TOP VIEW SDA 1 INT MAX9762 5 INL1 6 INL2 GAINLA 7 THIN QFN INL1 2 INL2 3 GAINLA ...

Page 29

Stereo 3W Audio Power Amplifiers with Ordering Information (continued) PART TEMP RANGE MAX9761ETI -40°C to +85°C MAX9761EUI -40°C to +85°C MAX9762ETI -40°C to +85°C MAX9762EUI -40°C to +85°C MAX9763ETI -40°C to +85°C MAX9763EUI -40°C to +85°C *EP = Exposed paddle. ...

Page 30

Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) D PIN # 1 I.D. C ...

Page 31

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 31 © 2003 Maxim Integrated Products ...

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