max9752aetit Maxim Integrated Products, Inc., max9752aetit Datasheet

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max9752aetit

Manufacturer Part Number
max9752aetit
Description
2.2w, Low-emi, Stereo, Class D Power Amplifiers With Directdrive Headphone Amplifiers
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
The MAX9752/MAX9753/MAX9754 combine a high-effi-
ciency, filterless, stereo Class D audio power amplifier
with a DirectDrive™ headphone amplifier in a single
device. The Class D amplifier operates from a single
4.5V to 5.5V supply and provides 2.2W per channel into
a 4Ω load. The headphone amplifier operates from a
single 3V to 5.5V supply, and uses Maxim’s patented
DirectDrive architecture to produce a ground-refer-
enced output from a single supply.
The MAX9754 features a Class D stereo speaker ampli-
fier and headphone driver. The MAX9752 adds an ana-
log volume control and a BEEP input. The MAX9753
adds a stereo 2:1 input multiplexer. All devices feature
logic-selectable gain, and a headphone sense input
that detects the presence of a headphone.
The MAX9752/MAX9753/MAX9754 come in 28-pin thin
QFN (5mm x 5mm x 0.8mm) packages, and are speci-
fied over the extended -40°C to +85°C temperature
range. For a pin-for-pin-compatible Class AB version of
these devices, refer to the MAX9750/MAX9751/
MAX9755 data sheet.
19-3666; Rev 0; 9/05
Pin Configurations 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.
U.S. Patent# 7,061,327
2.2W, Low-EMI, Stereo, Class D Power Amplifiers
Notebook PCs
Tablet PCs
Portable DVDs
VOL
BEEP
S
S
MAX9752
________________________________________________________________ Maxim Integrated Products
CLASS
AMP
General Description
D
HPS
with DirectDrive Headphone Amplifiers
Flat-Panel TVs
PC Displays
LCD Projectors
Applications
INPUT
MUX
SELECT
MAX9753
CLASS
♦ PC2001 Compliant
♦ 2.2W Class D Stereo Speaker Amplifier
♦ Pin-for-Pin Compatible with Class AB
♦ 85% Efficiency (R
♦ 62mW DirectDrive Headphone Amplifier
♦ High PSRR (70dB at 1kHz)
♦ Analog Volume Control (MAX9752)
♦ Beep Input with Glitch Filter (MAX9752)
♦ 2:1 Stereo Input MUX (MAX9753)
♦ ±8kV ESD-Protected Headphone Outputs
♦ No Output DC-Blocking Capacitors
♦ Industry-Leading Click-and-Pop Suppression
AMP
Note: All devices specified for -40°C to +85°C operation.
+Denotes lead-free package.
*EP = Exposed paddle.
MAX9752AETI+
MAX9752BETI+
MAX9752CETI+
MAX9753ETI+
MAX9754ETI+
D
MAX9750/MAX9751/MAX9755
HPS
PART
PIN-PACKAGE
28 TQFN-EP*
28 TQFN-EP*
28 TQFN-EP*
28 TQFN-EP*
28 TQFN-EP*
L
Ordering Information
= 8Ω, P
MAX9754
Block Diagrams
OUT
CLASS
AMP
D
= 1W)
T2855-1
T2855-1
T2855-1
T2855-1
T2855-1
CODE
PKG
HPS
Features
M A XIM U M
G A I N ( d B )
13.5
19.5
10.5
13.5
13.5
1

Related parts for max9752aetit

max9752aetit Summary of contents

Page 1

Rev 0; 9/05 2.2W, Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers General Description The MAX9752/MAX9753/MAX9754 combine a high-effi- ciency, filterless, stereo Class D audio power amplifier with a DirectDrive™ headphone amplifier in a single device. The ...

Page 2

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers ABSOLUTE MAXIMUM RATINGS HPV , CPV to GND ....................... -0. GND to PGND or CPGND .................................... -0.3V to +0.3V ...

Page 3

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers ELECTRICAL CHARACTERISTICS (continued HPV = CPV = +5.0V, GND = PGND = HPGND = 0V 1µ ...

Page 4

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers ELECTRICAL CHARACTERISTICS (continued HPV = CPV = +5.0V, GND = PGND = HPGND = 0V 1µ ...

Page 5

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers ELECTRICAL CHARACTERISTICS (continued HPV = CPV = +5.0V, GND = PGND = HPGND = 0V 1µ ...

Page 6

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers ( HPV = CPV = 5.0V, GND = PGND = HPGND = 0V 1µ 1µF, speaker impedance ...

Page 7

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers ( HPV = CPV 1µ 1µF, speaker impedance = 8Ω connected between OUT_+ and OUT_-, headphone load is ...

Page 8

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers ( HPV = CPV = 5.0V, GND = PGND = HPGND = 0V 1µ 1µF, speaker impedance ...

Page 9

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers ( HPV = CPV 1µ 1µF, speaker impedance = 8Ω connected between OUT_+ and OUT_-, headphone load is ...

Page 10

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers ( HPV = CPV = 5.0V, GND = PGND = HPGND = 0V 1µ 1µF, speaker impedance ...

Page 11

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers PIN MAX9752 MAX9753 MAX9754 1 — — — ...

Page 12

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers MAX9752 ONLY IN_ BIAS BIAS VOLUME VOL CONTROL BIAS GND Figure 1. MAX9752/MAX9753/MAX9754 Signal Path Detailed Description The MAX9752/MAX9753/MAX9754 combine a 2.2W, Class D speaker amplifier and a 62mW ...

Page 13

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers Figure 3. MAX9752/MAX9753/MAX9754 Radiated Emissions with 76mm of Speaker Cable V IN_ = 0V OUT_- ...

Page 14

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers Headphone Amplifier Conventional single-supply headphone amplifiers have their outputs biased about a nominal DC voltage (typi- cally half the supply) for maximum dynamic range. Large coupling capacitors are needed ...

Page 15

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers ADDITIONAL THD+N DUE TO DC-BLOCKING CAPACITORS 10 1 0.1 TANTALUM 0.01 0.001 ALUM/ELEC 0.0001 10 100 1k FREQUENCY (Hz) Figure 7. Distortion Contributed by DC-Blocking Capacitors Table 1. MAX9752 ...

Page 16

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers Table 2. MAX9752 Speaker Amplifier Gain Settings for Maximum Output Power GAIN INPUT R (dB (Ω) RMS MAX9752A 9.0 1.004 4 10.5 0.844 4 12.0 0.710 4 ...

Page 17

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers Table 5a. MAX9752A Volume Levels V (V) VOL FRACTION OF GAIN1 = MIN MAX HPV DD 0 0.4900 0.074 0.4900 0.5673 0.160 0.5673 0.6447 ...

Page 18

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers Table 5b. MAX9752B Volume Levels V (V) VOL FRACTION OF GAIN1 = MIN MAX HPV DD GAIN2 = 0 0 0.4900 0.074 0.4900 0.5673 ...

Page 19

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers Table 5c. MAX9752C Volume Levels V (V) VOL FRACTION MIN MAX HPV DD 0 0.4900 0.074 0.4900 0.5673 0.160 0.5673 0.6447 0.183 0.6447 0.7220 ...

Page 20

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers MAX9752 HPV DD V REF DAC VOL Figure 9. MAX9752 Volume-Control Circuit MAX9752A VOLUME-CONTROL TRANSFER FUNCTION 20 GAIN1 = GAIN2 = SPEAKER MODE -10 -20 -30 ...

Page 21

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers 0.47μF SOURCE 1 0.47μF SOURCE 2 0.47μF SOURCE 3 Figure 11. MAX9752 Beep Summing Circuit Click-and-Pop Suppression The MAX9752/MAX9753/MAX9754 feature Maxim’s comprehensive, industry-leading click-and-pop sup- pression eliminating audible transients ...

Page 22

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers The MAX9752/MAX9753/MAX9754 have different sup- plies for each portion of the device allowing for the opti- mum combination of headroom, power dissipation, and noise immunity. The speaker amplifiers are ...

Page 23

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers Connect all components associated with the charge pump (C2 and C3) to CPGND. Connect V together at C2. Place the charge-pump capacitors (C1, C2, and C3) as close to ...

Page 24

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers C IN 1μF INL 1 LEFT-CHANNEL AUDIO INPUT C IN 1μF INR 27 RIGHT-CHANNEL AUDIO INPUT BIAS 21 C BIAS 1μF VOL 28 GAIN1 GAIN2 23 ...

Page 25

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers C IN 1μF INL1 1 LEFT-CHANNEL AUDIO INPUT INL2 2 LEFT-CHANNEL AUDIO INPUT C IN 1μ 1μF INR1 27 RIGHT-CHANNEL AUDIO INPUT INR2 28 RIGHT-CHANNEL AUDIO INPUT ...

Page 26

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers C IN 1μF INL 2 LEFT-CHANNEL AUDIO INPUT C IN 1μF INR 28 RIGHT-CHANNEL AUDIO INPUT BIAS 21 C BIAS 1μF GAIN SHDN ...

Page 27

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers TOP VIEW SHDN 22 GAIN2 23 24 GAIN1 MAX9752 GND 26 INR 27 VOL THIN ...

Page 28

Low-EMI, Stereo, Class D Power Amplifiers with DirectDrive Headphone Amplifiers (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.) 28 ______________________________________________________________________________________ Package Information ...

Page 29

... 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 ____________________ 29 © 2005 Maxim Integrated Products Package Information (continued registered trademark of Maxim Integrated Products, Inc. ...

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