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PDF MAX9736 Data sheet ( Hoja de datos )
| Número de pieza | MAX9736 | |
| Descripción | Mono/Stereo High-Power Class D Amplifier | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-3108; Rev 1; 10/08
EVAALVUAAILTAIOBNLEKIT
Mono/Stereo High-Power Class D Amplifier
General Description
The MAX9736A/B Class D amplifiers provide high-per-
formance, thermally efficient amplifier solutions. The
MAX9736A delivers 2 x 15W into 8Ω loads, or 1 x 30W
into a 4Ω load. The MAX9736B delivers 2 x 6W into 8Ω
loads or 1 x 12W into a 4Ω load. These devices are pin-
for-pin compatible, allowing a single audio design to
work across a broad range of platforms, simplifying
design efforts, and reducing PCB inventory.
Both devices operate from 8V to 28V and provide a
high PSRR, eliminating the need for a regulated power
supply. The MAX9736 offers up to 88% efficiency at
12V supply.
Pin-selectable modulation schemes select between fil-
terless modulation and classic PWM modulation.
Filterless modulation allows the MAX9736 to pass CE
EMI limits with 1m cables using only a low-cost ferrite
bead and capacitor on each output. Classic PWM mod-
ulation is optimized for best audio performance when
using a full LC filter.
A pin-selectable stereo/mono mode allows stereo oper-
ation into 8Ω loads or mono operation into 4Ω loads. In
mono mode, the right input op amp becomes available
as a spare device, allowing flexibility in system design.
Comprehensive click-and-pop reduction circuitry mini-
mizes noise coming into and out of shutdown or mute.
Input op amps allow the user to create summing amplifiers,
lowpass or highpass filters, and select an optimal gain.
The MAX9736A/B are available in 32-pin TQFN pack-
www.DaatgaSehseeatn4Ud.csopmecified over the -40°C to +85°C tempera-
ture range.
Features
♦ Wide 8V to 28V Supply Voltage Range
♦ Spread-Spectrum Modulation Enables Low EMI
Solution
♦ Passes CE EMI Limits with Low-Cost Ferrite
Bead/Capacitor Filter
♦ Low BOM Cost, Pin-for-Pin Compatible Family
♦ High 67dB PSRR at 1kHz Reduces Supply Cost
♦ 88% Efficiency Eliminates Heatsink
♦ Thermal and Output Current Protection
♦ < 1µA Shutdown Mode
♦ Mute Function
♦ Space-Saving, 7mm x 7mm x 0.8mm, 32-Pin TQFN
Package
Applications
LCD/PDP/CRT Monitors
LCD/PDP/CRT TVs
MP3 Docking Stations
Notebook PCs
PC Speakers
All-in-One PCs
Ordering Information
PART
STEREO/MONO
OUTPUT POWER
PIN-PACKAGE
MAX9736AETJ+
15W stereo/
30W mono
32 TQFN-EP*
MAX9736BETJ+
6W stereo/
12W mono
32 TQFN-EP*
Note: All devices are specified over the -40°C to +85°C oper-
ating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Simplified Diagram
8V TO 28V
AUDIO
INPUTS
INPUT RESISTORS AND
SHDN
CAPACITORS SELECT GAIN MUTE
AND CUTOFF FREQUENCY
MONO
MAX9736
8Ω
8Ω
________________________________________________________________ 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.
1 page  
Mono/Stereo High-Power Class D Amplifier
Typical Operating Characteristics
(MAX9736A, PVDD = 12V, MOD = high, spread-spectrum modulation mode, VGND = VPGND = 0V, VSHDN = VMUTE = 5V, unless oth-
erwise noted.)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
1
PVDD = 12V,
FIXED FREQUENCY,
8Ω LOAD
POUT = 5W
0.1
POUT = 3W
0.01
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
1
PVDD = 12V,
SPREAD SPECTRUM,
8Ω LOAD
0.1 POUT = 5W
POUT = 3W
0.01
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
1
PVDD = 12V,
FIXED FREQUENCY,
4Ω LOAD
POUT = 5W
0.1
POUT = 3W
0.01
0.001
10
100 1k 10k
FREQUENCY (Hz)
100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
1
PVDD = 12V,
SPREAD SPECTRUM,
4Ω LOAD
0.1
POUT = 5W
0.01
www.DataSheet4U.com
POUT = 3W
0.001
10
100 1k 10k
FREQUENCY (Hz)
100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
10
PVDD = 18V,
FIXED FREQUENCY,
8Ω LOAD
1
6kHz
0.1 1kHz
0.001
10
100 1k 10k
FREQUENCY (Hz)
100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
10
PVDD = 12V,
FIXED FREQUENCY,
8Ω LOAD
1
6kHz
0.1
1kHz
0.01
20Hz
0.001
0 1 2 3 4 5 6 7 8 9 10
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
10
PVDD = 18V,
SPREAD SPECTRUM,
8Ω LOAD
1
1kHz 6kHz
0.1
0.001
10
100 1k 10k
FREQUENCY (Hz)
100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
10
PVDD = 12V,
SPREAD SPECTRUM,
8Ω LOAD
1
6kHz
1kHz
0.1
0.01 20Hz
0.001
0 1 2 3 4 5 6 7 8 9 10
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
10
PVDD = 24V,
FIXED FREQUENCY,
8Ω LOAD
1
6kHz
0.1
0.01 0.01
20Hz
20Hz
0.01
20Hz
1kHz
0.001
0 2 4 6 8 10 12 14 16 18 20
OUTPUT POWER (W)
0.001
0 2 4 6 8 10 12 14 16 18 20
OUTPUT POWER (W)
0.001
0
4 8 12
OUTPUT POWER (W)
16
_______________________________________________________________________________________ 5
5 Page 
Mono/Stereo High-Power Class D Amplifier
Typical Operating Characteristics (continued)
(MAX9736A, PVDD = 12V, MOD = high, spread-spectrum modulation mode, VGND = VPGND = 0V, VSHDN = VMUTE = 5V, unless oth-
erwise noted.)
20
18
16
14
12
10
8
6
4
2
0
0
OUTPUT POWER
vs. LOAD RESISTANCE
PVDD = 12V, MONO,
SPREAD SPECTRUM
10% THD+N
1% THD+N
5 10 15 20 25
LOAD RESISTANCE (Ω)
30
40
35
30
25
20
15
10
5
0
0
OUTPUT POWER
vs. LOAD RESISTANCE
PVDD = 18V, MONO,
SPREAD SPECTRUM
10% THD+N
1% THD+N
5 10 15 20 25
LOAD RESISTANCE (Ω)
30
40
35
30
25
20
15
10
5
0
0
OUTPUT POWER
vs. LOAD RESISTANCE
PVDD = 24V, MONO,
SPREAD SPECTRUM
10% THD+N
1% THD+N
5 10 15 20 25
LOAD RESISTANCE (Ω)
30
SUPPLY CURRENT
vs. PVDD SUPPLY VOLTAGE
45
VREGEN = VMUTE = VSHDN = 3.3V, MONO
30
www.DataSheet4U.com
15
0
8 13 18 23 28
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. PVDD SUPPLY VOLTAGE
20
VREGEN = 0V,
VMUTE = VSHDN = 3.3V,
VS = 5V, MONO
15
10
5
0
8 13 18 23 28
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. VS VOLTAGE
20
VREGEN = 0V,
VMUTE = VSHDN = 3.3V,
MONO
15
10
5
0
4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5
VS VOLTAGE (V)
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet MAX9736.PDF ] | |
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