MAX9736AETJ/V+-MAX9736AETJ+-MAX9736AETJ+T-MAX9736BETJ+T-MAX9736DETJ+-MAX9736DETJ+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX9736AETJ+T ,Mono/Stereo High-Power Class D AmplifierELECTRICAL CHARACTERISTICS(V = 20V, V = 5V, V = V = 0V, V = V = V = 5V, REGEN = MONO = AGND, C1 = 0 ..
MAX9736BETJ+T ,Mono/Stereo High-Power Class D AmplifierApplicationsA pin-selectable stereo/mono mode allows stereo oper-LCD/PDP/CRT Monitors Notebook PCsa ..
MAX9736DETJ+ ,Mono/Stereo High-Power Class D AmplifierFeaturesThe MAX9736A/B/D Class D amplifiers provide high- ♦ Wide 8V to 28V Supply Voltage Rangeperf ..
MAX9736DETJ+T ,Mono/Stereo High-Power Class D AmplifierELECTRICAL CHARACTERISTICS(V = 20V, V = 5V, V = V = 0V, V = V = V = 5V, REGEN = MONO = AGND, C1 = 0 ..
MAX9737ETG+T ,Mono 7W Class D AmplifierApplicationsOrdering Information2.1 Notebook PCs PART TEMP RANGE PIN-PACKAGELCD/PDP/CRT MonitorsMAX ..
MAX973CSA ,Ultra-Low-Power / Open-Drain / Single/Dual-Supply ComparatorsMAX971–MAX974/MAX981–MAX98419-0450; Rev 0; 11/95Ultra-Low-Power, Open-Drain,Single/Dual-Supply Comp ..
MB89475 ,F2MC-8L/Low Power/Low Voltage Microcontrollersapplications forconsumer product.2* : F MC stands for FUJITSU Flexible Microcontroller.n
MB89535A ,F2MC-8L/Low Power/Low Voltage MicrocontrollersFEATURES• Wide range of package options• Two types of QFP packages (1 mm pitch, 0.65 mm pitch) • LQ ..
MB89535A ,F2MC-8L/Low Power/Low Voltage MicrocontrollersFUJITSU SEMICONDUCTORDS07-12547-4EDATA SHEET8-bit Original Microcontroller CMOS2F MC-8L MB89530A Se ..
MB89537A , 8-bit Original Microcontroller CMOS, F-2MC-8L MB89530A Series
MB89537A , 8-bit Original Microcontroller CMOS, F-2MC-8L MB89530A Series
MB89537AC , 8-bit Original Microcontroller CMOS, F-2MC-8L MB89530A Series

MAX9736AETJ/V+-MAX9736AETJ+-MAX9736AETJ+T-MAX9736BETJ+T-MAX9736DETJ+-MAX9736DETJ+T
Mono/Stereo High-Power Class D Amplifier
General Description
The MAX9736A/B/D Class D amplifiers provide high-
performance, thermally efficient amplifier solutions. The
MAX9736A delivers 2 x 15W into 8Ωloads, or 1 x 30W
into a 4Ωload. The MAX9736B/D deliver 2 x 6W into 8Ω
loads or 1 x 12W into a 4Ωload.
These 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 8Ωloads or mono operation into 4Ωloads. 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/D are available in 32-pin TQFN pack-
ages and specified over the -40°C to +85°C tempera-
ture range.
FeaturesWide 8V to 28V Supply Voltage RangeSpread-Spectrum Modulation Enables Low EMI
SolutionPasses CE EMI Limits with Low-Cost Ferrite
Bead/Capacitor FilterLow BOM CostHigh 67dB PSRR at 1kHz Reduces Supply Cost88% Efficiency Eliminates HeatsinkThermal and Output Current Protection< 1µA Shutdown ModeMute FunctionSpace-Saving, 32-Pin TQFN Packages, 7mm x
7mm x 0.8mm (MAX9736A/B), 5mm x 5mm x
0.8mm (MAX9736D)
MAX9736
Mono/Stereo High-Power Class D Amplifier
Ordering Information
Applications
INPUT RESISTORS AND
CAPACITORS SELECT GAIN
AND CUTOFF FREQUENCY
AUDIO
INPUTS
SHDN
8V TO 28V
MAX9736MUTEMONO
Simplified Diagram
19-3108; Rev 3; 9/09
EVALUATION KIT
AVAILABLE
PARTSTEREO/MONO
OUTPUT POWERPIN-PACKAGE
MAX9736AETJ+2 x 15W/
1 x 30W
32 TQFN-EP*
7mm x 7mm
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.
LCD/PDP/CRT Monitors
LCD/PDP/CRT TVs
MP3 Docking Stations
Notebook PCs
PC Speakers
All-in-One PCs
Ordering Information continued at end of data sheet.
MAX9736
Mono/Stereo High-Power Class D Amplifier
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VPVDD= 20V, VVS= 5V, VAGND= VPGND= 0V, VMOD= VSHDN= VMUTE= 5V, REGEN = MONO = AGND, C1 = 0.1μF, C2 = 1μF,
RIN_ = 20kΩand RFB_= 20kΩ, RL= ∞, AC measurement bandwidth 22Hz to 22kHz, TA= TMINto TMAX, unless otherwise noted.
Typical values are at TA= +25°C.) (Notes 4, 5)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1:VS cannot exceed PVDD + 0.3V. See the Power Sequencingsection.
Note 2:Thermal performance of this device is highly dependant on PCB layout. See the Applications Informationsection for more details.
Note 3:Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a 4-layer
board. For detailed information on package thermal considerations, visit /thermal-tutorial.
PVDD to PGND.......................................................-0.3V to +30V
AGND to PGND.....................................................-0.3V to +0.3V
INL, INR, FBL, FBR, COM to AGND.........-0.3V to (VREG+ 0.3V)
MUTE, SHDN, MONO, MOD, REGEN to AGND.......-0.3V to +6V
REG to AGND ..............................................-0.3V to (VS + 0.3V)
VS to AGND (Note 1)................................................-0.3V to +6V
OUTL+, OUTL-, OUTR+,
OUTR-, to PGND...................................-0.3V to (PVDD+ 0.3V)
C1N to PGND..........................................-0.3V to (PVDD + 0.3V)
C1P to PGND...........................(PVDD - 0.3V) to (VBOOT+ 0.3V)
BOOT to PGND..............................(VC1P- 0.3V) to PVDD + 12V
OUTL+, OUTL-, OUTR+, OUTR-,
Short Circuit to PGND or PVDD...............................Continuous
Thermal Limits (Notes 2, 3)
Continuous Power Dissipation (TA= +70°C)
32-Pin TQFN 5mm x 5mm Multiple Layer PCB
(derate 34.5mW/°C above +70°C)..................................2.76W
θJA.................................................................................29°C/W
θJC...................................................................................2°C/W
Continuous Power Dissipation (TA= +70°C)
32-Pin TQFN 7mm x 7mm Multiple Layer PCB
(derate 37mW/°C above +70°C).....................................2.96W
θJA.................................................................................27°C/W
θJC...................................................................................1°C/W
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
AMPLIFIER DC CHARACTERISTICS
Speaker Supply Voltage RangePVDDInferred from PSRR test828V
Preamplifier Supply Voltage
RangeVS(Notes 1 and 7)4.55.5V
Undervoltage LockoutUVLO7V
TA = +25°C3045IPVDDRL = ∞, VREGEN = 5V,
VVS = openTA = TMIN to TMAX50mA
TA = +25°C1420Quiescent Supply Current
IVSRL = ∞, VREGEN = 0V,
VVS = 5VTA = TMIN to TMAX22mA
IPVDD110Shutdown Supply CurrentISHDNVSHDN = 0VIVS10μA
REG VoltageVREG4.2V
Preregulator VoltageVSInternal regulated 5V, VREGEN = 5V4.8V
COM VoltageVCOM1.92.052.2V
INPUT AMPLIFIER CHARACTERISTICS
Capacitive DriveCL30pF
Output Swing (Note 6)Sinking ±1mA±2V
Open-Loop GainAVOVFB_ = VCOM ±500mV, RFB_= 20kΩ to IN_88dB
Input Offset VoltageVOS±1mV
MAX9736
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Input Amplifier Slew Rate2.5V/μs
Input Amplifier Unity-Gain
Bandwidth3.5MHz
AMPLIFIER CHARACTERISTICS
MAX9736A, MAX9736D16.51717.5Output Amplifier Gain (Note 8)AVMAX9736B13.113.614.1dB
Output Current Limit3.34.6A
Output OffsetVOSOUT_+ to OUT_-, TA = +25°C±2±10mV
PVDD = 8V to 28V, TA = +25°C6580Power-Supply Rejection RatioPSRRf = 1kHz, 100mVP-P ripple67dB
RL = 8Ω8StereoRL = 4Ω13V P V D D = 12V
MonoRL = 4Ω15.5
StereoRL = 8Ω13.5V P V D D = 18V MonoRL = 4Ω27
StereoRL = 8Ω13.5
MAX9736A Output Power
(THD+N = 1%)POUT_1%P V D D = 24V MonoRL = 4Ω27
RL = 8Ω6StereoRL = 4Ω11V P V D D = 12V
MonoRL = 4Ω12
StereoRL = 8Ω6V P V D D = 18V MonoRL = 4Ω12
StereoRL = 8Ω6
MAX9736B Output Power
(THD+N = 1%)POUT_1%P V D D = 24V MonoRL = 4Ω12
RL = 8Ω10StereoRL = 4Ω16V P V D D = 12V
MonoRL = 4Ω19.5
StereoRL = 8Ω17.5V P V D D = 18V MonoRL = 4Ω35
StereoRL = 8Ω17.5
MAX9736A Output Power
(THD+N = 10%)POUT_10%P V D D = 24V MonoRL = 4Ω35
RL = 8Ω7.5StereoRL = 4Ω14V P V D D = 12V
MonoRL = 4Ω15
StereoRL = 8Ω7.5V P V D D = 18V MonoRL = 4Ω15
StereoRL = 8Ω7.5
MAX9736B Output Power
(THD+N = 10%)POUT_10%P V D D = 24V MonoRL = 4Ω15
ELECTRICAL CHARACTERISTICS (continued)
(VPVDD= 20V, VVS= 5V, VAGND= VPGND= 0V, VMOD= VSHDN= VMUTE= 5V, REGEN = MONO = AGND, C1 = 0.1μF, C2 = 1μF,
RIN_ = 20kΩand RFB_= 20kΩ, RL= ∞, AC measurement bandwidth 22Hz to 22kHz, TA= TMINto TMAX, unless otherwise noted.
Typical values are at TA= +25°C.) (Notes 4, 5)
Mono/Stereo High-Power Class D Amplifier
MAX9736
Mono/Stereo High-Power Class D Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(VPVDD= 20V, VVS= 5V, VAGND= VPGND= 0V, VMOD= VSHDN= VMUTE= 5V, REGEN = MONO = AGND, C1 = 0.1μF, C2 = 1μF,
RIN_ = 20kΩand RFB_= 20kΩ, RL= ∞, AC measurement bandwidth 22Hz to 22kHz, TA= TMINto TMAX, unless otherwise noted.
Typical values are at TA= +25°C.) (Notes 4, 5)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
StereoRL = 8Ω8.5V P V D D = 12V MonoRL = 4Ω17
StereoRL = 8Ω5.5V P V D D = 18V MonoRL = 4Ω11
StereoRL = 8Ω3.5
MAX9736D Output Power
(Thermally Limited)P V D D = 24V MonoRL = 4Ω7
MAX9736A, POUT = 4W, f = 1kHz,
PWM modulation mode, RL = 8Ω0.04
Total Harmonic Distortion Plus
NoiseTHD+N
MAX9736B/D, POUT = 2W, f = 1kHz,
PWM modulation mode, RL = 8Ω0.04
MAX9736A/D,
POUT = 8W, RL = 8Ω96.5
Signal-to-Noise RatioSNRA-weighted
MAX9736B, POUT = 6W,
RL = 8Ω97
MAX9736A/D120NoiseVNA-weighted
(Note 9)MAX9736B100μVRMS
CrosstalkL to R, R to L, P OU T = 1W , f = 1kH z, RL = 8Ω 100dB
EfficiencyηP OU T = 8W, M AX 9736A, P V D D = 12V , RL = 8Ω 88%
Into mute36
Click-and-Pop LevelKCP
Peak voltage, 32
samples/second,
A-weighted
(Notes 9 and 10)Out of mute36
dBV
Switching Frequency270300330kHz
Spread-Spectrum Bandwidth±4kHz
Thermal Shutdown Level160°C
Thermal Shutdown Hysteresis30°C
Turn-On TimetON110ms
MAX9736
Mono/Stereo High-Power Class D Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(VPVDD= 20V, VVS= 5V, VAGND= VPGND= 0V, VMOD= VSHDN= VMUTE= 5V, REGEN = MONO = AGND, C1 = 0.1μF, C2 = 1μF,
RIN_ = 20kΩand RFB_= 20kΩ, RL= ∞, AC measurement bandwidth 22Hz to 22kHz, TA= TMINto TMAX, unless otherwise noted.
Typical values are at TA= +25°C.) (Notes 4, 5)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
DIGITAL INTERFACE
Input Voltage HighVINH2V
Input Voltage LowVINL0.8V
Input Voltage Hysteresis50mV
Input Leakage Current±10μA
Note 4:All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 5:Stereo mode (MONO = GND) specified with 8Ωresistive load in series with a 68μH inductive load connected across BTL
outputs. Mono mode (MONO = 5V) specified with a 4Ωresistive load in series with a 33μH inductive load connected
across BTL outputs.
Note 6:Output swing is specified with respect to VCOM.
Note 7:For typical applications, an external 5V supply is not required. Therefore, set REGEN = 5V. If thermal performance is a
concern, set REGEN = 0V and provide an external regulated 5V supply.
Note 8:Output amplifier gain is defined as:
Note 9:Amplifier inputs AC-coupled to GND.
Note 10:Specified at room temperature with an 8Ωresistive load in series with a 68μH inductive load connected across BTL outputs.
Mode transitions controlled by SHDNcontrol pin.×−⎛⎜⎟+−log|()()|
OUT_OUT
Typical Operating Characteristics
(MAX9736A, VPVDD= 12V, MOD = high, spread-spectrum modulation mode, VGND= VPGND= 0V, VSHDN= VMUTE= 5V, unless
otherwise noted.)
MAX9736
Mono/Stereo High-Power Class D Amplifier
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9736 toc01
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001100k
POUT = 5W
POUT = 3W
VPVDD = 12V,
FIXED FREQUENCY,
8Ω LOAD
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9736 toc02
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001100k
POUT = 5W
POUT = 3W
VPVDD = 12V,
SPREAD SPECTRUM,
8Ω LOAD
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9736 toc03
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001100k
POUT = 5W
POUT = 3W
VPVDD = 12V,
FIXED FREQUENCY,
4Ω LOAD
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9736 toc04
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001100k
POUT = 5W
POUT = 3W
VPVDD = 12V,
SPREAD SPECTRUM,
4Ω LOAD
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc05
OUTPUT POWER (W)
THD+N (%)87654321
VPVDD = 12V,
FIXED FREQUENCY,
8Ω LOAD
6kHz
1kHz
20Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc06
OUTPUT POWER (W)
THD+N (%)87654321
VPVDD = 12V,
SPREAD SPECTRUM,
8Ω LOAD
6kHz
1kHz
20Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc07
OUTPUT POWER (W)
THD+N (%)161412108642
VPVDD = 18V,
FIXED FREQUENCY,
8Ω LOAD
6kHz
1kHz
20Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc08
OUTPUT POWER (W)
THD+N (%)161412108642
VPVDD = 18V,
SPREAD SPECTRUM,
8Ω LOAD
6kHz1kHz
20Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc09
OUTPUT POWER (W)
THD+N (%)1284
1kHz
VPVDD = 24V,
FIXED FREQUENCY,
8Ω LOAD
6kHz
20Hz
Typical Operating Characteristics (continued)
(MAX9736A, VPVDD= 12V, MOD = high, spread-spectrum modulation mode, VGND= VPGND= 0V, VSHDN= VMUTE= 5V, unless
otherwise noted.)
MAX9736
Mono/Stereo High-Power Class D Amplifier
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc10
OUTPUT POWER (W)
THD+N (%)1412108642
VPVDD = 24V,
SPREAD SPECTRUM,
8Ω LOAD
6kHz1kHz
20Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc11
OUTPUT POWER (W)12108642016
VPVDD = 12V,
FIXED FREQUENCY,
4Ω LOAD
6kHz
1kHz
20Hz
THD+N (%)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc12
OUTPUT POWER (W)
THD+N (%)12963
6kHz1kHz
20Hz
VPVDD = 12V,
SPREAD SPECTRUM,
4Ω LOAD
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc13
TOTAL OUTPUT POWER (W)
EFFICIENCY (%)105
POWER DISSIPATION (W)
EFFICIENCY
POWER DISSIPATION
VPVDD = 12V,
FIXED FREQUENCY,
8Ω LOAD
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc14
TOTAL OUTPUT POWER (W)161214468102020
EFFICIENCY (%)
EFFICIENCY
POWER DISSIPATION
VPVDD = 12V,
SPREAD SPECTRUM,
8Ω LOAD
POWER DISSIPATION (W)
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc15
TOTAL OUTPUT POWER (W)251520105035
EFFICIENCY (%)
EFFICIENCY
POWER DISSIPATION
VPVDD = 18V,
SPREAD SPECTRUM,
8Ω LOAD
POWER DISSIPATION (W)
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc16251520105035
EFFICIENCY (%)
EFFICIENCY
POWER DISSIPATION
VPVDD = 18V,
FIXED FREQUENCY,
8Ω LOAD
POWER DISSIPATION (W)
Typical Operating Characteristics (continued)
(MAX9736A, VPVDD= 12V, MOD = high, spread-spectrum modulation mode, VGND= VPGND= 0V, VSHDN= VMUTE= 5V, unless
otherwise noted.)
MAX9736
Mono/Stereo High-Power Class D Amplifier
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc17
TOTAL OUTPUT POWER (W)2015105030
EFFICIENCY
POWER DISSIPATION
EFFICIENCY (%)
POWER DISSIPATION (W)
VPVDD = 24V,
FIXED FREQUENCY,
8Ω LOAD
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc18
TOTAL OUTPUT POWER (W)2015105030
EFFICIENCY
POWER DISSIPATION
EFFICIENCY (%)
POWER DISSIPATION (W)
VPVDD = 24V,
SPREAD SPECTRUM,
8Ω LOAD
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc19
TOTAL OUTPUT POWER (W)105020
VPVDD = 12V,
FIXED FREQUENCY,
4Ω LOAD
EFFICIENCY (%)
POWER DISSIPATION (W)
EFFICIENCY
POWER DISSIPATION
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc20
TOTAL OUTPUT POWER (W)2015105030
EFFICIENCY
POWER DISSIPATION
EFFICIENCY (%)
POWER DISSIPATION (W)
VPVDD = 12V,
SPREAD SPECTRUM,
4Ω LOAD
TOTAL OUTPUT POWER vs. VDD
LOAD = 8Ω, f = 1kHz
MAX9736 toc21
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)102015
1% THD+N
10% THD+N
TOTAL OUTPUT POWER vs. LOAD RESISTANCE
VDD = 12V, f = 1kHz, SPREAD SPECTRUM
MAX9736 toc22
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)102015
1% THD+N
10% THD+N
TOTAL OUTPUT POWER vs. LOAD RESISTANCE
VDD = 18V, f = 1kHz, SPREAD SPECTRUM
MAX9736 toc23
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)201510
10% THD+N
1% THD+N
Typical Operating Characteristics (continued)
(MAX9736A, VPVDD= 12V, MOD = high, spread-spectrum modulation mode, VGND= VPGND= 0V, VSHDN= VMUTE= 5V, unless
otherwise noted.)
MAX9736
Mono/Stereo High-Power Class D Amplifier
TOTAL OUTPUT POWER
vs. LOAD RESISTANCE
MAX9736 toc24
TOTAL OUTPUT POWER (W)
LOAD RESISTANCE (Ω)2015105030
10% THD+N
1% THD+N
VPVDD = 24V,
SPREAD SPECTRUM
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9736 toc25
FREQUENCY (Hz)
PSRR (dB)
10k1k100
-90100k
100mVP-P,
PVDD RIPPLE,
8Ω LOAD
CROSSTALK vs. FREQUENCY
MAX9736 toc26
CROSSTALK (dB)
1W OUTPUT,
8Ω LOAD,
SPREAD SPECTRUM
RIGHT TO LEFT
LEFT TO RIGHT
FREQUENCY (Hz)
10k1k10010100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc08
OUTPUT POWER (W)
THD+N (%)161412108642
VPVDD = 18V,
SPREAD SPECTRUM,
8Ω LOAD
6kHz1kHz
20Hz
INBAND OUTPUT SPECTRUM
MAX9736 toc28
FREQUENCY (kHz)
OUTPUT AMPLITUDE (dBV)105
8Ω LOAD,
SPREAD SPECTRUM
WIDEBAND OUTPUT SPECTRUM
MAX9736 toc29
FREQUENCY (MHz)
OUTPUT AMPLITUDE (dBV)1
8Ω LOAD,
FIXED FREQUENCY
WIDEBAND OUTPUT SPECTRUM
MAX9736 toc30
OUTPUT AMPLITUDE (dBV)
FREQUENCY (MHz)10.1100
8Ω LOAD,
SPREAD SPECTRUM
SHDN ON-/OFF-RESPONSE
MAX9736 toc31
40ms/div
SHDN
2V/div
OUTPUT
5V/div
MUTE ON-/OFF-RESPONSE
MAX9736 toc32
40ms/div
OUTPUT
5V/div
MUTE
2V/div
Typical Operating Characteristics (continued)
(MAX9736A, VPVDD= 12V, MOD = high, spread-spectrum modulation mode, VGND= VPGND= 0V, VSHDN= VMUTE= 5V, unless
otherwise noted.)
MAX9736
Mono/Stereo High-Power Class D Amplifier
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9736 toc37
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001100k
POUT = 10W
POUT = 6W
VPVDD = 12V,
FIXED FREQUENCY,
4Ω LOAD, MONO
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9736 toc38
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.001100k
POUT = 10W
POUT = 6W
VPVDD = 12V,
SPREAD SPECTRUM,
4Ω LOAD, MONO
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc39
THD+N (%)161412108642
6kHz
1kHz
20Hz
VPVDD = 12V,
FIXED FREQUENCY,
4Ω LOAD, MONO
SUPPLY CURRENT
vs. PVDD SUPPLY VOLTAGE
MAX9736
toc33
SUPPLYVOLTAGE(V)
SUPPLY CURRENT (mA)1813
VREGEN = VMUTE = VSHDN = 3.3V
SUPPLY CURRENT
vs. PVDD SUPPLY VOLTAGE
MAX9736
toc34
SUPPLY CURRENT (mA)5
SUPPLYVOLTAGE(V)1813828
VREGEN = 0V,
VMUTE = VSHDN = 3.3V,
VS = 5V
SUPPLY CURRENT
vs. VS SUPPLY VOLTAGE
MAX9736 toc35
VS VOLTAGE (V)
SUPPLY CURRENT (mA)
VREGEN = 0V,
VMUTE = VSHDN = 3.3V
SHUTDOWN CURRENT
vs. PVDD SUPPLY VOLTAGE
MAX9736 toc36
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT (201612
VREGEN = VSHDN = 0V,
VMUTE = 3.3V
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (VDD = 12V,
SPREAD SPECTRUM, 4Ω LOAD, MONO)
MAX9736 toc40
THD+N (%)161412108642
6kHz
1kHz
20Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc42
OUTPUT POWER (W)
THD+N (%)252015105
6kHz
1kHz
20Hz
VPVDD = 18V,
SPREAD SPECTRUM,
4Ω LOAD, MONO
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc43
OUTPUT POWER (W)
THD+N (%)252015105
1kHz
VPVDD = 24V,
FIXED FREQUENCY,
4Ω LOAD, MONO
6kHz
20Hz
Typical Operating Characteristics (continued)
(MAX9736A, VPVDD= 12V, MOD = high, spread-spectrum modulation mode, VGND= VPGND= 0V, VSHDN= VMUTE= 5V, unless
otherwise noted.)
MAX9736
Mono/Stereo High-Power Class D Amplifier
EFFICIENCY
vs. OUTPUT POWER
MAX9736 toc46
EFFICIENCY (%)
4Ω LOAD, MONO,
f = 1kHz SPREAD SPECTRUM105020
VPVDD = 24V
VPVDD = 18V
VPVDD = 12V
OUTPUT POWER vs. VDD
(LOAD = 4Ω, f = 1kHz, SPREAD SPECTRUM, MONO)
MAX9736 toc47
OUTPUT POWER (W)2410121418201622
10% THD+N
1% THD+N
4Ω LOAD
f = 1kHz,
SPREAD SPECTRUM, MONO
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (VDD = 24V,
SPREAD SPECTRUM, 4Ω LOAD, MONO)
MAX9736 toc44
OUTPUT POWER (W)2418126036
6kHz
1kHz
20Hz
THD+N (%)
EFFICIENCY
vs. OUTPUT POWER
MAX9736 toc45
OUTPUT POWER (W)
EFFICIENCY (%)105
4Ω LOAD, MONO,
1kHz FIXED FREQUENCY
VPVDD = 24V
VPVDD = 18V
VPVDD = 12V
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736 toc41
OUTPUT POWER (W)
THD+N (%)252015105
6kHz
1kHz
20Hz
VPVDD = 18V,
FIXED FREQUENCY,
4Ω LOAD, MONO
Typical Operating Characteristics (continued)
(MAX9736A, VPVDD= 12V, MOD = high, spread-spectrum modulation mode, VGND= VPGND= 0V, VSHDN= VMUTE= 5V, unless
otherwise noted.)
MAX9736
Mono/Stereo High-Power Class D Amplifier
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9736 toc48
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)2015105
10% THD+N
1% THD+N
VPVDD = 12V, MONO,
SPREAD SPECTRUM
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9736 toc49
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)2051015
10% THD+N
1% THD+N
VPVDD = 18V, MONO,
SPREAD SPECTRUM
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9736 toc50
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)2051015
10% THD+N
1% THD+N
VPVDD = 24V, MONO,
SPREAD SPECTRUM
SUPPLY CURRENT
vs. PVDD SUPPLY VOLTAGE
MAX9736 toc51
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)231813
VREGEN = VMUTE = VSHDN = 3.3V, MONO
SUPPLY CURRENT
vs. PVDD SUPPLY VOLTAGE
MAX9736 toc52
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)1813
VREGEN = 0V,
VMUTE = VSHDN = 3.3V,
VS = 5V, MONO
SUPPLY CURRENT
vs. VS VOLTAGE
MAX9736 toc53
VS VOLTAGE (V)
SUPPLY CURRENT (mA)
VREGEN = 0V,
VMUTE = VSHDN = 3.3V,
MONO
MAX9736
Mono/Stereo High-Power Class D Amplifier
Pin Description
PINNAMEFUNCTION
1, 2OUTL-Left-Channel Negative Speaker OutputBOOTCharge-Pump Output. Connect a 1μF charge-pump holding capacitor from BOOT to PVDD.MONOMono Select. Set MONO high for mono mode, low for stereo mode.FBLLeft-Channel Feedback. Connect feedback resistor between FBL and INL to set amplifier gain.INLStereo Left-Channel Inverting Input. In mono mode, INL is the inverting audio input for the mono amplifier.
7, 8, 17N.C.No Connection. Not internally connected. OK to connect to PGND.MUTEMute Input. Drive MUTE low to place the device in mute mode.SHDNShutdown Input. Drive SHDN low to place the device in shutdown mode.REGEN
Internal Regulator Enable Input. Connect REGEN to SHDN to enable the internal regulator. Drive REGEN
low to disable the internal regulator, and supply the device with an external 5V supply on VS. See the
Power-Supply Sequencing section.COMInternal 2V Bias. Bypass COM to AGND with a 1μF capacitor.
13, 14AGNDAnalog GroundREGInternal Regulator Output. Bypass REG to AGND with a 1μF capacitor.VS
5V Regulator Supply. Bypass VS to AGND with a 1μF capacitor. If REGEN is low, the internal regulator is
disabled, and an external 5V supply must be connected to VS. See the Power-Supply Sequencing
section.INRStereo Right-Channel Inverting Audio Input. In mono mode, INR is the inverting audio input for the
uncommitted preamplifier (see the Mono Configuration section for more details).FBRRight-Channel Feedback. Connect feedback resistor between FBR and INR to set amplifier gain.MOD
Output Modulation Select. Sets the output modulation scheme:
VMOD = Low, classic PWM/fixed-frequency mode
VMOD = High, filterless modulation/spread-spectrum modeC1NCharge-Pump Flying-Capacitor Negative TerminalC1PCharge-Pump Flying-Capacitor Positive Terminal
23, 24OUTR-Right-Channel Negative Speaker Output
25, 26OUTR+Right-Channel Positive Speaker Output
27, 30PVDDPower Supply. Bypass each PVDD pin to ground with 0.1μF capacitors. Also, use a single 220μF
capacitor between PVDD and PGND.
28, 29PGNDPower Ground
31, 32OUTL+Left-Channel Positive Speaker OutputEPExposed Pad. Must be externally connected to PGND.

Partno	Mfg	Dc	Qty	Available	Descript
MAX9736AETJ+ \|MAX9736AETJ	MAXIM	N/a	12	avai	Mono/Stereo High-Power Class D Amplifier
MAX9736AETJ+T	MAXIM	N/a	2500	avai	Mono/Stereo High-Power Class D Amplifier
MAX9736BETJ+T \|MAX9736BETJT	MAXIM	N/a	80	avai	Mono/Stereo High-Power Class D Amplifier
MAX9736DETJ+ \|MAX9736DETJ	MAXIM	N/a	565	avai	Mono/Stereo High-Power Class D Amplifier
MAX9736AETJ/V+ \|MAX9736AETJV+	MAXIM	N/a	102	avai	Mono/Stereo High-Power Class D Amplifier
MAX9736DETJ+T \|MAX9736DETJT	MAXIM	N/a	800	avai	Mono/Stereo High-Power Class D Amplifier