MAX98400AEVKIT+ Maxim Integrated Products, MAX98400AEVKIT+ Datasheet

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MAX98400AEVKIT+

Manufacturer Part Number
MAX98400AEVKIT+
Description
Audio Modules & Development Tools MAX98400A KIT MAX98400A KIT
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX98400AEVKIT+

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
19-5286; Rev 0; 6/10
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.
The MAX98400A/MAX98400B Class D amplifiers provide
high-performance, thermally efficient amplifier solutions. The
MAX98400A delivers 2x20W into 8I loads or 1x40W into a
4I load. The MAX98400B delivers 2x12W into 8I loads.
An integrated limiting circuit prevents output clipping
distortion, protects small speakers from transient volt-
ages, and reduces power dissipation.
A thermal-foldback feature can be enabled to automati-
cally reduce the output power at above a junction tem-
perature of +120NC. Traditional thermal protection is also
available in addition to robust overcurrent protection.
The ICs operate from a single 8V to 28V supply and
provide a high 67dB PSRR, eliminating the need for a
regulated power supply. They offer up to 90% efficiency
from a 12V supply.
Filterless modulation allows the ICs to pass EN55022B
EMI limits with 1m cables using only a low-cost ferrite
bead and small-value capacitor on each output.
Both devices feature eight digitally controlled gain settings.
Comprehensive click-and-pop reduction circuitry mini-
mizes noise coming into and out of shutdown.
The MAX98400A/MAX98400B are available in 36-pin
and 24-pin TQFN packages, respectively, and are speci-
fied over the -40NC to +85NC temperature range.
_______________________________________________________________ Maxim Integrated Products 1
Stereo, High-Power, Class D Amplifiers
General Description
INL+
INR+
INL-
INR-
*MAX98400A ONLY
CLIPPING
CLIPPING
LIMITER
LIMITER
MAX98400A/B
PGA
PGA
Note: Devices operate over the -40°C to +85°C temperature
range.
*EP = Exposed pad.
S
S
S
S
S
S
S
AND H-BRIDGE
AND H-BRIDGE
MAX98400AETX+
MAX98400BETG+
MODULATOR
MODULATOR
Wide 8V to 28V Supply Voltage Range
Single-Supply Operation
Low EMI: Active Emissions Limiting
Clipping Limiter
Low Quiescent Current
Thermal Foldback
Thermal and Overcurrent Protection
CLASS D
CLASS D
LCD/PDP Televisions
LCD Monitors
MP3 Docking Stations
Notebook PCs
PART
OUTL-
OUTL+
MONO*
OUTR-
OUTR+
Simplified Block Diagram
Ordering Information
PIN-PACKAGE
36 TQFN-EP*
24 TQFN-EP*
Applications
Features
2x20W
2x12W
SPEC

Related parts for MAX98400AEVKIT+

MAX98400AEVKIT+ Summary of contents

Page 1

... TQFN packages, respectively, and are speci- fied over the -40NC to +85NC temperature range. INL- INL+ INR- INR+ _______________________________________________________________ Maxim Integrated Products 1 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. Wide 8V to 28V Supply Voltage Range S Single-Supply Operation ...

Page 2

Stereo, High-Power, Class D Amplifiers Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

Stereo, High-Power, Class D Amplifiers Figure 1. MAX98400B EMI Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

Stereo, High-Power, Class D Amplifiers ABSOLUTE MAXIMUM RATINGS PVDD to PGND ......................................................-0.3V to +30V V to GND ...............................................................-0.3V to +6V S SHDN, MONO to GND ............................................-0.3V to +6V IN_ to GND ..............................................................-0.3V to +6V G1, G2, RELEASE, TEMPLOCK, LIM_TH to ...

Page 5

Stereo, High-Power, Class D Amplifiers ELECTRICAL ChARACTERISTICS (continued 18V 1FF 5V, LIM_TH = V PVDD IN SHDN = 1FF 1FF measurement bandwidth 20Hz to 20kHz, differential ...

Page 6

Stereo, High-Power, Class D Amplifiers ELECTRICAL ChARACTERISTICS (continued 18V 1FF 5V, LIM_TH = V PVDD IN SHDN = 1FF 1FF measurement bandwidth 20Hz to 20kHz, differential ...

Page 7

Stereo, High-Power, Class D Amplifiers (MAX98400A 18V 5V, LIM_TH = V PVDD SHDN 1FF, typical values are at T REL TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY ...

Page 8

Stereo, High-Power, Class D Amplifiers (MAX98400A 18V 5V, LIM_TH = V PVDD SHDN 1FF, typical values are at T REL EFFICIENCY vs. OUTPUT POWER 100 ...

Page 9

Stereo, High-Power, Class D Amplifiers (MAX98400A 18V 5V, LIM_TH = V PVDD SHDN 1FF, typical values are at T REL INBAND OUTPUT SPECTRUM 0 8I LOAD -20 -40 -60 -80 ...

Page 10

Stereo, High-Power, Class D Amplifiers (MAX98400A 18V 5V, LIM_TH = V PVDD SHDN 1FF, typical values are at T REL TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER (MONO) 10 ...

Page 11

Stereo, High-Power, Class D Amplifiers (MAX98400A 18V 5V, LIM_TH = V PVDD SHDN 1FF, typical values are at T REL OUTPUT POWER vs. LOAD (MONO ...

Page 12

Stereo, High-Power, Class D Amplifiers TOP VIEW N.C. 28 PGND 29 PGND 30 PVDD 31 MAX98400A PVDD 32 PVDD 33 PGND 34 PGND ...

Page 13

Stereo, High-Power, Class D Amplifiers PIN NAME MAX98400A MAX98400B 11 8 INL INL- 13 — MONO 14 GND 16 11 INR INR TEMPLOCK 20 14 RELEASE 21 15 SHDN 23 ...

Page 14

Stereo, High-Power, Class D Amplifiers C2 1.0µF MONO 1.0µF INL+ 11 LEFT C IN INPUT 1.0µF INL- 12 TEMPLOCK 1.0µF INR+ 17 RIGHT C IN INPUT 1.0µF INR Stereo Configuration for MAX98400A ...

Page 15

Stereo, High-Power, Class D Amplifiers C 1.0µ MONO 1µ F INL+ 11 LEFT INPUT INL 1µ TEMPLOCK C IN 1µ F INR+ 17 RIGHT INPUT INR ...

Page 16

Stereo, High-Power, Class D Amplifiers The MAX98400A/MAX98400B are available in 36-pin and 24-pin TQFN packages, respectively, and are specified over the -40NC to +85NC temperature range. The high efficiency of a Class D amplifier is due to the switching operation ...

Page 17

Stereo, High-Power, Class D Amplifiers Limiter Threshold Control (LIM_TH) There are three modes for the limiter, defined by V the voltage applied to the LIM_TH pin (Table 1). In Mode1, the limiter is disabled. The output clips when output peak ...

Page 18

Stereo, High-Power, Class D Amplifiers Preamplifier Gain Setting The ICs offer eight pin-selectable gain settings, select- able through the G1 and G2 pins. The ICs feature overcurrent protection and two types of thermal protection: thermal foldback and overtempera- ture protection. ...

Page 19

Stereo, High-Power, Class D Amplifiers Inductor-Based Output Filters Some applications use the ICs with a full inductor-/ capacitor-based (L/C) output filter. See Figure 4 for the correct connections of these components. The load impedance of the speaker determines the filter ...

Page 20

Stereo, High-Power, Class D Amplifiers MONO 13 INL+ 11 INL- 12 TEMPLOCK 19 INR+ 17 INR PVDD S 6 31, 32, 33 MAX98400A REGULATOR CLIPPING PGA LIMITER POWER THERMAL STAGE FOLDBACK WITH THERMAL CLIPPING AND PGA LIMITER ...

Page 21

Stereo, High-Power, Class D Amplifiers V PVDD S 4 21, 22 REGULATOR INL+ 8 CLIPPING PGA LIMITER INL- 9 TEMPLOCK 13 THERMAL FOLDBACK INR+ 12 CLIPPING PGA LIMITER INR- 11 LIMITER CONTROL SELECTION LIM_TH RELEASE G1 Functional ...

Page 22

Stereo, High-Power, Class D Amplifiers For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, ...

Page 23

Stereo, High-Power, Class D Amplifiers For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, ...

Page 24

Stereo, High-Power, Class D Amplifiers For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, ...

Page 25

Stereo, High-Power, Class D Amplifiers For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, ...

Page 26

... 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 26 2010 Maxim Integrated Products © ...

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