MAX9703ETJ+ ,10W Stereo/15W Mono, Filterless, Spread-Spectrum, Class D AmplifiersFeatures● Filterless Class D AmplifierThe MAX9703/MAX9704 mono/stereo Class D audio ● Unique Spread ..
MAX9704ETJ ,15W / Filterless / Spread-Spectrum Mono/Stereo Class D AmplifiersFeaturesThe MAX9703/MAX9704 mono/stereo class D audio ♦ Filterless Class D Amplifierpower amplifier ..
MAX9704ETJ+ ,10W Stereo/15W Mono, Filterless, Spread-Spectrum, Class D AmplifiersElectrical Characteristics(V = 15V, AGND = PGND = 0V, SHDN ≥ V , A = 16dB, C = C = 0.47μF, C = 0.01 ..
MAX9704ETJ+T ,10W Stereo/15W Mono, Filterless, Spread-Spectrum, Class D AmplifiersBlock Diagrams0.47µFMAX9704INL+ OUTL+MAX9703H-BRIDGE0.47µFINL- OUTL-0.47µFIN+ OUT+H-BRIDGE0.47µF0.4 ..
MAX9705AETB+ ,2.3W, Ultra-Low-EMI, Filterless, Class D Audio AmplifierFeatures♦ Filterless Amplifier Passes FCC-RadiatedThe MAX9705 3rd-generation, ultra-low EMI, mono, ..
MAX9705AETB+T ,2.3W, Ultra-Low-EMI, Filterless, Class D Audio AmplifierApplicationsEMI Spectrum DiagramCellular Phones MP3 PlayersPDAs Portable Audio50.045.040.0FCC EMI L ..
MB89165 ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12405-2EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89160/1 ..
MB89165A ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12405-2EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89160/1 ..
MB89185 ,F2MC-8L/Low Power/Low Voltage MicrocontrollersFUJITSU SEMICONDUCTORDS07-12404-2EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89180 S ..
MB89191A ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12512-7EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89190/1 ..
MB89191A ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12512-7EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89190/1 ..
MB89191A ,8-bit Proprietary MicrocontrollerFEATURES • Minimum execution time: 0.95 m s at 4.2 MHz (VCC = 2.7 V) 2•F MC-8L family CPU core•Two ..
MAX9703ETJ+-MAX9704ETJ+-MAX9704ETJ+T
10W Stereo/15W Mono, Filterless, Spread-Spectrum, Class D Amplifiers
General DescriptionThe MAX9703/MAX9704 mono/stereo Class D audio
power amplifiers provide Class AB amplifier performance
with Class D efficiency, conserving board space and
eliminating the need for a bulky heatsink. Using a Class
D architecture, these devices deliver up to 15W while
offering up to 78% efficiency. Proprietary and protected
modulation and switching schemes render the traditional
Class D output filter unnecessary.
The MAX9703/MAX9704 offer two modulation schemes:
a fixed-frequency mode (FFM), and a spread-spectrum
mode (SSM) that reduces EMI-radiated emissions due
to the modulation frequency. The device utilizes a fully
differential architecture, a full bridged output, and compre-
hensive click-and-pop suppression.
The MAX9703/MAX9704 feature high 80dB PSRR, low
0.07% THD+N, and SNR in excess of 95dB. Short-circuit
and thermal-overload protection prevent the devices from
being damaged during a fault condition. The MAX9703 is
available in a 32-pin TQFN (5mm x 5mm x 0.8mm) pack-
age. The MAX9704 is available in a 32-pin TQFN (7mm x
7mm x 0.8mm) package. Both devices are specified over
the extended -40°C to +85°C temperature range.
Applications
Features●Filterless Class D Amplifier●Unique Spread-Spectrum Mode Offers 5dB
Emissions Improvement Over Conventional Methods●Up to 78% Efficient (RL = 8Ω)●Up to 88% Efficient (RL = 16Ω)●15W Continuous Output Power into 8Ω (MAX9703)●2x10W Continuous Output Power into 8Ω (MAX9704)●Low 0.07% THD+N●High PSRR (80dB at 1kHz)●10V to 25V Single-Supply Operation●Differential Inputs Minimize Common-Mode Noise●Pin-Selectable Gain Reduces Component Count●Industry-Leading Click-and-Pop Suppression●Low Quiescent Current (24mA)●Low-Power Shutdown Mode (0.2μA)●Short-Circuit and Thermal-Overload Protection●Available in Thermally Efficient, Space-Saving
Packages 32-Pin TQFN (5mm x 5mm x 0.8mm)–MAX9703 32-Pin TQFN (7mm x 7mm x 0.8mm)–MAX9704
Pin Configurations appears at end of data sheet.●LCD TVs●LCD Monitors●Desktop PCs●LCD Projectors●Hands-Free Car Phone
Adapters
Note: All devices specified for over -40°C to +85°C operating temperature range.
*EP = Exposed paddle.
+Denotes lead-free package.
PARTPIN-PACKAGEAMPPKG CODE
MAX9703ETJ+32 TQFN-EP*MonoT3255-4
MAX9704ETJ+32 TQFN-EP*StereoT3277-2
0.47µFINL+OUTL+
OUTL-INL-
0.47µFH-BRIDGE
0.47µFINR+OUTR+
OUTR-INR-
0.47µFH-BRIDGE
0.47µFIN+OUT+
OUT-IN-
0.47µFH-BRIDGE
MAX9704
MAX9703
MAX9703/MAX970410W Stereo/15W Mono, Filterless,
Spread-Spectrum, Class D Amplifiers
Block Diagrams
Ordering Information
(All voltages referenced to PGND.)
VDD to PGND, AGND............................................................30V
OUTR_, OUTL_, C1N.................................-0.3V to (VDD + 0.3V)
C1P............................................(VDD - 0.3V) to (CHOLD + 0.3V)
CHOLD........................................................(VDD - 0.3V) to +40V
All Other Pins to PGND...........................................-0.3V to +12V
Duration of OUTR_/OUTL_
Short Circuit to PGND, VDD................................................10s
Continuous Input Current (VDD, PGND) ...............................1.6A
Continuous Input Current......................................................0.8A
Continuous Input Current (all other pins)..........................±20mA
Continuous Power Dissipation (TA = +70°C)
Single-Layer Board:
MAX9703 32-Pin TQFN (derate 21.3mW/°C
above +70°C)..........................................................1702.1mW
MAX9704 32-Pin TQFN (derate 27mW/°C
above +70°C)..........................................................2162.2mW
Multilayer Board:
MAX9703 32-Pin TQFN (derate 34.5mW/°C
above +70°C)..........................................................2758.6mW
MAX9704 32-Pin TQFN (derate 37mW/°C
above +70°C)..........................................................2963.0mW
Junction Temperature......................................................+150°C
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
(VDD = 15V, AGND = PGND = 0V, SHDN ≥ VIH, AV = 16dB, CSS = CIN = 0.47μF, CREG = 0.01μF, C1 = 100nF, C2 = 1μF, FS1 = FS2
= PGND (fS = 660kHz), RL connected between OUTL+ and OUTL- and OUTR+ and OUTR-, TA = TMIN to TMAX, unless otherwise
noted. Typical values are at TA = +25°C.) (Notes 1, 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
GENERALSupply Voltage RangeVDDInferred from PSRR test1025V
Quiescent CurrentIDDRL = OPENMAX97031422mAMAX97042434
Shutdown CurrentISHDN0.21.5µA
Turn-On TimetONCSS = 470nF100msCSS = 180nF50
Ampliier Output Resistance in
ShutdownSHDN = PGND150330kΩ
Input ImpedanceRIN
AV = 13dB355880AV = 16dB304865
AV = 19.1dB233955
AV = 29.6dB101522
Voltage GainAV
G1 = L, G2 = L29.429.629.8G1 = L, G2 = H18.919.119.3
G1 = H, G2 = L12.81313.2
G1 = H, G2 = H15.91616.3
Gain MatchingBetween channels (MAX9704)0.5%
Output Offset VoltageVOS±6±30mV
Common-Mode Rejection RatioCMRRfIN = 1kHz, input referred60dB
Power-Supply Rejection Ratio
(Note 3)PSRR
VDD = 10V to 25V5480200mVP-P ripplefRIPPLE = 1kHz80
fRIPPLE = 20kHz66
MAX9703/MAX970410W Stereo/15W Mono, Filterless,Spread-Spectrum, Class D Ampliiers
Absolute Maximum RatingsStresses 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.
Electrical Characteristics
(VDD = 15V, AGND = PGND = 0V, SHDN ≥ VIH, AV = 16dB, CSS = CIN = 0.47μF, CREG = 0.01μF, C1 = 100nF, C2 = 1μF, FS1 = FS2
= PGND (fS = 660kHz), RL connected between OUTL+ and OUTL- and OUTR+ and OUTR-, TA = TMIN to TMAX, unless otherwise
noted. Typical values are at TA = +25°C.) (Notes 1, 2)
Note 1: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 2: Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For RL = 8Ω, L = 68μH.
For RL = 4Ω, L = 33μH.
Note 3: PSRR is specified with the amplifier inputs connected to AGND through CIN.
Note 4: The MAX9704 continuous 8Ω and 16Ω power measurements account for thermal limitations of the 32-pin TQFN-EP pack-age. Continuous 4Ω power measurements account for short-circuit protection of the MAX9703/MAX9704 devices.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSContinuous Output Power
(MAX9703)PCONT
THD+N = 10%, VDD
= 16V, f = 1kHz, TA =
+25°C, tCONT = 15min
(Note 4)
RL = 4Ω10RL = 8Ω15
RL = 16Ω, VDD = 24V18
Continuous Output Power
(MAX9704)PCONT
THD+N = 10%, VDD
= 16V, f = 1kHz, TA =
+25°C, tCONT = 15min
(Note 4)
RL = 4Ω2x5RL = 8Ω2x10
RL = 16Ω, VDD = 24V2x16
Total Harmonic Distortion Plus
NoiseTHD+NfIN = 1kHz, either FFM or SSM, RL = 8Ω,
POUT = 4W0.07%
Signal-to-Noise RatioSNRRL = 8Ω, POUT =
10W, f = 1kHz
BW = 22Hz to
22kHz
FFM94
SSM88
A-weightedFFM97
SSM91
CrosstalkLeft to right, right to left, 8Ω load, fIN = 10kHz65dB
Oscillator FrequencyfOSC
FS1 = L, FS2 = L560670800
kHz
FS1 = L, FS2 = H940
FS1 = H, FS2 = L470
FS1 = H, FS2 = H (spread-spectrum mode)670
±7%
EficiencyηPOUT = 15W, f = 1kHz, RL = 8Ω78%
POUT = 10W, f = 1kHz, RL = 16Ω88
Regulator OutputVREG6V
DIGITAL INPUTS (SHDN, FS_, G_) Input ThresholdsVIH2.5VVIL0.8
Input Leakage Current±1µA
MAX9703/MAX970410W Stereo/15W Mono, Filterless,Spread-Spectrum, Class D Ampliiers
Electrical Characteristics (continued)
(33μH with 4Ω, 68μH with 8Ω, part in SSM mode, 136μH with 16Ω, measurement BW = 22Hz to 22kHz, unless otherwise noted.)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCYMAX9703/04 toc02
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01100k
VDD = 15V
RL = 8Ω
AV = 16dB
POUT = 500mW
POUT = 8W
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCYMAX9703/04 toc03
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01100k
VDD = 20V
RL = 8Ω
AV = 16dB
POUT = 8W
POUT = 500mW
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCYMAX9703/04 toc04
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01100k
VDD = 20V
RL = 8Ω
AV = 16dB
POUT = 8W
SSM
FFM
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWERMAX9703/04 toc05
OUTPUT POWER (W)
THD+N (%)45231
VDD = 15V
RL = 4Ω
AV = 16dB
f = 10kHz
f = 1kHz
f = 100Hz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWERMAX9703/04 toc06
OUTPUT POWER (W)
THD+N (%)234567891011121314
VDD = 15V
RL = 8Ω
AV = 16dB
f = 100Hz
f = 1kHz
f = 10kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWERMAX9703/04 toc07
THD+N (%)2681012141618
VDD = 20V
RL = 8Ω
AV = 16dB
f = 100Hz
f = 1kHz
f = 10kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCYMAX9703/04 toc01
FREQUENCY (Hz)
THD+N (%)
10k1k100
0.01100k
VDD = 15V
RL = 4Ω
AV = 16dB
POUT = 4W
POUT = 500mW
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWERMAX9703/04 toc08
THD+N (%)2345678910111213141516171819
FFM (335kHz)
SSM
VDD = 20V
RL = 8Ω
AV = 16dB
f = 1kHz
EFFICIENCY vs. OUTPUT POWERMAX9703/04 toc09
EFFICIENCY (%)64235791
VDD = 12V
AV = 16dB
f = 1kHz
RL = 4Ω
RL = 8Ω
MAX9703/MAX970410W Stereo/15W Mono, Filterless,Spread-Spectrum, Class D Ampliiers
Typical Operating Characteristics
(33μH with 4Ω, 68μH with 8Ω, part in SSM mode, 136μH with 16Ω, measurement BW = 22Hz to 22kHz, unless otherwise noted.)
EFFICIENCY vs. OUTPUT POWERMAX9703/04 toc10
OUTPUT POWER (W)
EFFICIENCY (%)128426101418
VDD = 15V
AV = 16dB
f = 1kHz
RL = 16Ω
RL = 8Ω
OUTPUT POWER
vs. SUPPLY VOLTAGEMAX9703/04 toc11
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)1613192225
RL = 8Ω
RL = 16Ω
AV = 16dB
THD+N = 10%10100
OUTPUT POWER
vs. LOAD RESISTANCEMAX9703/04 toc12
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)THD+N = 1%
THD+N = 10%
VDD = 15V
AV = 16dB10100
OUTPUT POWER
vs. LOAD RESISTANCEMAX9703/04 toc13
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)
VDD = 20V
AV = 16dBTHD+N = 10%
THD+N = 1%
COMMON-MODE REJECTION RATIO
vs. FREQUENCYMAX9703/04 toc14
FREQUENCY (Hz)
CMRR (dB)
10k1k100
-80100k
VDD = 15V
RL = 8Ω
AV = 16dB
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCYMAX9703/04 toc15
FREQUENCY (Hz)
PSRR (dB)
10k1k100
-120100k
AV = 16dB
RL = 8Ω
200mVP-P INPUT
VDD = 15V
CROSSTALK vs. FREQUENCYMAX9703/04 toc16
CROSSTALK (dB)
10k1k100
-120100k
LEFT TO RIGHT
RIGHT TO LEFT
AV = 16dB
1% THD+N
VDD = 15V
8Ω LOAD
OUTPUT FREQUENCY SPECTRUMMAX9703/04 toc17
OUTPUT MAGNITUDE (dB)
FFM MODE
AV = 16dB
UNWEIGHTED
fIN = 1kHz
POUT = 5W
RL = 8Ω
OUTPUT FREQUENCY SPECTRUMMAX9703/04 toc18
OUTPUT MAGNITUDE (dB)
SSM MODE
AV = 16dB
UNWEIGHTED
fIN = 1kHz
POUT = 5W
RL = 8Ω
MAX9703/MAX970410W Stereo/15W Mono, Filterless,Spread-Spectrum, Class D Ampliiers
Typical Operating Characteristics (continued)
