MAX9715ETE+-MAX9715ETE+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX9715ETE+T ,2.8W, Low-EMI, Stereo, Filterless Class D Audio AmplifierELECTRICAL CHARACTERISTICS(V = PV = 5.0V, GND = PGND = 0V, V = V , C = 1μF, speaker impedance = 8Ω ..
MAX9716ETA ,Low-Cost, Mono, 1.4W BTL Audio Power AmplifiersELECTRICAL CHARACTERISTICS—5V Supply(V = 5V, GND = 0, SHDN = V , T = +25°C. C = 1µF, R = R = 20kΩ ( ..
MAX9716ETA+ ,Low-Cost, Mono, 1.4W BTL Audio Power AmplifiersBlock DiagramsSINGLE SUPPLY SINGLE SUPPLY2.7V TO 5.5V 2.7V TO 5.5VBIAS BIASMAX9716 MAX9717B/C/DIN- ..
MAX9716ETA+T ,Low-Cost, Mono, 1.4W BTL Audio Power AmplifiersFeaturesThe MAX9716/MAX9717 audio power amplifiers are ideal ♦ 2.7V to 5.5V Single-Supply Operation ..
MAX9716EUA ,Low-Cost, Mono, 1.4W BTL Audio Power AmplifiersFeaturesThe MAX9716/MAX9717 audio power amplifiers are ideal♦ 2.7V to 5.5V Single-Supply Operationf ..
MAX9716EUA+T ,Low-Cost, Mono, 1.4W BTL Audio Power AmplifiersELECTRICAL CHARACTERISTICS—5V Supply(V = 5V, V = 0V, SHDN = V , T = +25°C. C = 1µF, R = R = 20kΩ (M ..
MB89193 ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12512-7EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89190/1 ..
MB89193A ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12512-7EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89190/1 ..
MB89193AP ,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 ..
MB89193PF ,8-bit Proprietary MicrocontrollerFUJITSU SEMICONDUCTORDS07-12512-7EDATA SHEET8-bit Proprietary MicrocontrollerCMOS2F MC-8L MB89190/1 ..
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 ..

MAX9715ETE+-MAX9715ETE+T
2.8W, Low-EMI, Stereo, Filterless Class D Audio Amplifier
General Description
The MAX9715 high-efficiency, stereo, Class D audio
power amplifier provides up to 2.8W per channel into aspeaker with a 5V supply. Maxim’s second-generation
Class D technology features robust output protection,
high efficiency, and high power-supply rejection (PSRR)
while eliminating the need for output filters. Selectable
gain settings, +10.5dB or +9.0dB, adjust the amplifier
gain to suit the audio input level and speaker load.
The MAX9715 features high PSRR (71dB at 1kHz),
allowing for operation from noisy supplies without addi-
tional regulation. Comprehensive click-and-pop sup-
pression eliminates audible clicks and pops at startup
and shutdown. The MAX9715 operates from a single 5V
supply and consumes only 12mA of supply current.
Integrated shutdown control reduces supply current to
less than 100nA.
The MAX9715 is fully specified over the extended
-40°C to +85°C temperature range and is available in a
thermally enhanced 16-pin TQFN-EP package.
Applications
High-End Notebook Audio
LCD Projectors
Portable Audio
Multimedia Docking Stations
Features5V Single-Supply OperationSpread-Spectrum Modulator Reduces EMI2.8W, Class D, Stereo Speaker Amplifier (4Ω)Filterless Class D Requires No LC Output FilterHigh PSRR (71dB at 1kHz)86% Efficiency (RL= 8Ω, POUT= 1W)Low-Power Shutdown ModeIntegrated Click-and-Pop SuppressionLow Total Harmonic Distortion: 0.06% at 1kHzShort-Circuit and Thermal ProtectionInternal Gain, +9.0dB or +10.5dBAvailable in Space-Saving Package
16-Pin Thin QFN-EP (5mm x 5mm x 0.8mm)
MAX9715
2.8W, Low-EMI, Stereo, Filterless
Class D Audio Amplifier3411109
INL
INR
VDD
BIAS
PGNDOUTR+OUTR-PV
OUTL+
OUTL-
N.C.
GAIN
GND
PGND
SHDN
TOP VIEW
MAX9715
TQFN
Pin Configurations
Ordering Information
MAX9715
OUTR+
OUTR-
OUTL+
OUTL-
CLASS D
AMPLIFIER
INR
GAIN
INL
4.5V TO 5.5V SUPPLY
Block Diagram
19-3589; Rev 2; 7/08
+Denotes a lead-free/RoHS-compliant package.
*EP = Exposed pad.
PARTTEMP RANGEPIN-PACKAGE
MAX9715ETE+-40°C to +85°C16 TQFN-EP*
Typical Operating Circuit/Functional Diagram appears at
end of data sheet.
EVALUATION KIT
AVAILABLE
MAX9715
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD= PVDD= 5.0V, GND = PGND = 0V, VSHDN= VDD, CBIAS= 1μF, speaker impedance = 8Ωin series with 68μH connected between
OUT_+ and OUT_-, GAIN= +10.5dB, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Notes 1, 2)
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.
VDD, PVDD, to GND...............................................................+6V
GND to PGND.......................................................-0.3V to +0.3V
Any Other Pin to PGND.............................-0.3V to (VDD+ 0.3V)
Duration of OUT__ Short Circuit to PGND or PVDD....Continuous
Duration of OUT_+ Short Circuit between OUT_-......Continuous
Continuous Current Into/Out of (PVDD, OUT__, PGND)........1.7A
Continuous Input Current (All Other Pins).......................±20mA
Continuous Power Dissipation (TA= +70°C)
16-Pin TQFN-EP (derate 20.8mW/°C above +70°C)..1666mW
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
GENERAL
Supply Voltage RangeVDDInferred from PSRR test4.55.5V
Quiescent CurrentIDDNo load12.816mA
Shutdown Supply CurrentISHDNVSHDN = 0V0.12μA
Input ResistanceRIN6.51013.5kΩ
Turn-On TimetON25ms
BIAS VoltageVBIAS1.8V
CLASS D SPEAKER AMPLIFIERS
TA = +25°C12.645Output Offset VoltageVOS
TA = TMIN to TMAX70
GAIN = 010.5Maximum Speaker Amplifier Gain
(Note 3)AVGAIN = 19.0dB
PVDD or VDD = 4.5V to
5.5V52.475
f = 1kHz, 100mVP-P71Power-Supply Rejection RatioPSRRVIN_ = 0V
f = 20kHz, 100mVP-P60
RL = 8Ω1.4THD+N = 1%RL = 4Ω2.3
RL = 8Ω1.7Output PowerPOUT
THD+N = 10%RL = 4Ω2.8
RL = 8Ω, POUT = 1.2W0.06Total Harmonic Distortion Plus
NoiseTHD+Nf = 1kHzRL = 4Ω, POUT = 2W0.07%
POUT = 1W, BW = 22Hz to 22kHz89Signal-to-Noise RatioSNRPOUT = 1W, A-weighted93dB
Maximum Capacitive LoadCL_MAX200pF
Switching FrequencyfSWAverage frequency in spread-spectrum
operation1.001.221.40MHz
MAX9715
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(VDD= PVDD= 5.0V, GND = PGND = 0V, VSHDN= VDD, CBIAS= 1μF, speaker impedance = 8Ωin series with 68μH connected between
OUT_+ and OUT_-, GAIN= +10.5dB, TA= TMINto TMAX, unless otherwise noted. Typical values are at TA= +25°C.) (Notes 1, 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Spread-Spectrum Modulation±120kHz
CrosstalkChannel-to-channel, f = 10kHz, POUT = 1W,
left to right or right to left72dB
Into shutdown-64
Click-and-Pop LevelKCP
Peak voltage,
A-weighted,
32 samples per
second (Note 4)Out of shutdown-46
dBV
EfficiencyηRL = 8Ω in series with 68μH, POUT = 1W
per channel, f = 1kHz86%
DIGITAL INPUTS (GAIN and SHDN)
Input High VoltageVIH2.0V
Input Low VoltageVIL0.8V
SHDN±1Input Leakage CurrentILEAKGAIN±1.5μA
Note 1:All devices are 100% production tested at TA= +25°C. All temperature limits are guaranteed by design.
Note 2:Speaker amplifier gain is defined as AV= (VOUT_+- VOUT_-) / VIN.
Note 3:Click-and-pop level testing performed with an 8Ωresistive load in series with 68μH inductive load connected across the
Class D BTL outputs. Mode transitions are controlled by the SHDNpin. Inputs AC-coupled to GND.
Note 4:Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For RL = 4Ω, L = 33μH.
For RL= 8Ω, L = 68μH.
Typical Operating Characteristics
(VDD= 5.0V, CVDD= 3 x 0.1μF, CBIAS= 1μF, CINL= CINR= 1μF, AV= +10.5dB, TA= +25°C, unless otherwise noted.) (See the
Typical Operating Circuit/Functional Diagram)1k100k10k100
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9715toc01
THD+N (%)
POUT = 0.35W
POUT = 2W
VDD = 5V
RL = 4Ω1k100k10k100
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX9715toc02
THD+N (%)
POUT = 0.5W
POUT = 1.25W
VDD = 5V
RL = 8Ω
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9715toc03
OUTPUT POWER (W)
THD+N (%)
fIN = 1kHz AND 20Hz
fIN = 10kHz
VDD = 5V
RL = 4Ω
MAX9715
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
Typical Operating Characteristics (continued)
(VDD= 5.0V, CVDD= 3 x 0.1μF, CBIAS= 1μF, CINL= CINR= 1μF, AV= +10.5dB, TA= +25°C, unless otherwise noted.) (See the
Typical Operating Circuit/Functional Diagram)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9715toc04
OUTPUT POWER (W)
THD+N (%)
fIN = 1kHz
fIN = 10kHz
VDD = 5V
RL = 8Ω
fIN = 20Hz
EFFICIENCY
vs. OUTPUT POWER
MAX9715toc05
OUTPUT POWER (W)
EFFICIENCY (%)
VDD = 5V
fIN = 1kHz
POUT = POUTL + POUTR
OUTPUTS IN-PHASE
RL = 4Ω
RL = 8Ω
EFFICIENCY
vs. SUPPLY VOLTAGE
MAX9715 toc06
SUPPLY VOLTAGE (V)
EFFICIENCY (%)
RL = 4Ω
fIN = 1kHz
POUT = POUTL + POUTR
OUTPUTS IN-PHASE
THD+N = 1%
RL = 8Ω
11k10010
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9715toc07
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)
THD+N = 10%
THD+N = 1%
VDD = 5V
fIN = 1kHz
LLOAD = 33µH
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9715toc08
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)THD+N = 1%
fIN = 1kHz
RL = 4Ω
THD+N = 10%
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9715toc09
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
THD+N = 1%
fIN = 1kHz
RL = 8Ω
THD+N = 10%
MAX9715
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9715toc10
FREQUENCY (Hz)
PSRR (dB)
RL = 8Ω
CROSSTALK
vs. FREQUENCY
MAX9715 toc11
FREQUENCY (kHz)
CROSSTALK (dB)10.1
POUT = 1W
RL = 8Ω
AV = +10.5dB
fIN = 10kHz
RIGHT TO LEFT
LEFT TO RIGHT
OUTPUT SPECTRUM
vs. FREQUENCY
MAX9715toc12
FREQUENCY (kHz)
AMPLITUDE (dBV)
RL = 8Ω
VDD = 5V
fIN = 1kHz
OUTPUT SPECTRUM
vs. FREQUENCY (A-WEIGHTED)
MAX9715toc13
FREQUENCY (kHz)
AMPLITUDE (dBV)
RL = 8Ω
VDD = 5V
fIN = 1kHz
WIDEBAND SPECTRUM
MAX9715 toc14
FREQUENCY (MHz)
AMPLITUDE (dBV)
VDD = 5V
INPUTS AC GROUNDED
RL = 8Ω
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9715toc15
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
NO LOAD
INPUTS AC GROUNDED
Typical Operating Characteristics (continued)
(VDD= 5.0V, CVDD= 3 x 0.1μF, CBIAS= 1μF, CINL= CINR= 1μF, AV= +10.5dB, TA= +25°C, unless otherwise noted.) (See the
Typical Operating Circuit/Functional Diagram)
MAX9715
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
Pin Description
PINNAMEFUNCTION
1, 12PGNDPower GroundOUTL+Left-Channel Positive Speaker OutputOUTL-Left-Channel Negative Speaker Output
4, 9PVDDPositive Speaker Power-Supply Input. Power-supply input for speaker amplifier output stages. Connect
to VDD and bypass with 0.1μF to PGND.N.C.No connection. Not internally connected.GAINGain Select. Sets the internal amplifier gain. See the Gain Selection section.GNDGroundSHDNShutdown Control. Drive SHDN low to shut down the MAX9715.OUTR-Right-Channel Negative Speaker OutputOUTR+Right-Channel Positive Speaker OutputBIASBias Voltage Output. VBIAS = 1.8V, bypass BIAS to GND with a 1μF ceramic capacitor.VDDPositive Power-Supply Input. Bypass to GND with a 0.1μF ceramic capacitor.INRRight-Channel InputINLLeft-Channel InputEPExposed Paddle. Connect EP to an electrically isolated copper pad or GND.
Typical Operating Characteristics (continued)
(VDD= 5.0V, CVDD= 3 x 0.1μF, CBIAS= 1μF, CINL= CINR= 1μF, AV= +10.5dB, TA= +25°C, unless otherwise noted.) (See the
Typical Operating Circuit/Functional Diagram)
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
MAX9715 toc16
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT (
POWER-ON/OFF WAVEFORM
MAX9715 toc17
10ms/div
SHDN
5V/div
IOUT
200mA/div
MAX9715
2.8W, Low-EMI, Stereo, Filterless Class D
Audio Amplifier
Detailed Description
The MAX9715 2.8W, Class D speaker amplifier with
gain control offers Class AB performance with Class D
efficiency while occupying minimal board space. A
unique modulation scheme and spread-spectrum
switching allow filterless operation to create a compact,
flexible, low-noise, efficient audio power amplifier. The
MAX9715 features high 71dB at 1kHz PSRR, low 0.06%
THD+N, industry-leading click-and-pop performance
and a low-power shutdown mode.
The MAX9715 features an undervoltage lockout that pre-
vents operation from an insufficient power supply and
click-and-pop suppression that eliminates audible tran-
sients at startup and shutdown. The speaker amplifier
includes thermal-overload and short-circuit protection.
The MAX9715 features unique, spread-spectrum opera-
tion that reduces the amplitude of spectral components at
high frequencies, reducing EMIemissions that might oth-
erwise be radiated by the speaker and cables. The
switching frequency varies randomly by ±120kHz around
the center frequency (1.22MHz). The modulation scheme
is consistent with Maxim’s Class D amplifiers but the peri-
od of the triangle waveform changes from cycle to cycle.
Audio reproduction is not affected by the spread-spec-
trum switching scheme. Instead of a large amount of
spectral energy present at multiples of the switching fre-
quency that energy is now spread over a range of fre-
quencies. The spreading is increased with frequency so
that above a few megahertz, the wideband spectrum
looks like white noise for EMIpurposes (Figure 1).
Filterless Modulation/Common-Mode Idle
The spread-spectrum modulation scheme eliminates the
LC filter required by traditional Class D amplifiers, improv-
ing efficiency, reducing component count, conserving
board space and system cost. Conventional Class D
amplifiers output a 50% duty cycle square wave when no
signal is present. With no filter, the output square wave
appears across the load, resulting in finite load current,
which increases power consumption. When no signal is
present at the input, the MAX9715 outputs switch as
shown in Figure 2. The two outputs cancel each other
because the MAX9715 drives the speaker differently,
minimizing power consumption as there is no net idle-
mode voltage across the speaker.
MAX9715 fig01
FREQUENCY (MHz)
AMPLITUDE (dB
V/m)
Figure 1. MAX9715 Radiated Emissions with 75mm of Speaker Cable
VIN = 0V
OUT-
OUT+
VOUT+ - VOUT- = 0V
Figure 2. MAX9715 Output without Input Signal Applied

Partno	Mfg	Dc	Qty	Available	Descript
MAX9715ETE+ \|MAX9715ETE	MAXIM	N/a	1298	avai	2.8W, Low-EMI, Stereo, Filterless Class D Audio Amplifier
MAX9715ETE+ \|MAX9715ETE	MAXIN	N/a	79	avai	2.8W, Low-EMI, Stereo, Filterless Class D Audio Amplifier
MAX9715ETE+T \|MAX9715ETET	MAXIM	N/a	2624	avai	2.8W, Low-EMI, Stereo, Filterless Class D Audio Amplifier