MAX9730ETI+-MAX9730ETI+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX9730ETI+T ,2.4W, Single-Supply Class G Power AmplifierBlock Diagram2.7V TO 5.5VV CPVDDCCFB+MAX9730RFB+CINRIN+IN+ OUT+CLASS G+OUTPUTIN- OUT-- STAGERC IN-I ..
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MAX9730ETI+-MAX9730ETI+T
2.4W, Single-Supply Class G Power Amplifier
General Description
The MAX9730 features a mono Class G power amplifier
with an integrated inverting charge-pump power supply.
The charge pump can supply up to 500mA of peak out-
put current over a 2.7VDC to 5.5VDC supply voltage
range, guaranteeing up to 2.4W output power into anload. The 2.4W output power allows for transient
audio content to remain unclipped as the battery rail col-
lapses over time.
The MAX9730 maximizes battery life by offering high-
performance efficiency. Maxim’s proprietary output
stage provides efficiency levels greater than Class AB
devices without the EMI penalties commonly associat-
ed with Class D amplifiers. High efficiency allows the
MAX9730 to be packaged in a WLP package without
derating the output power handling capability.
The device utilizes fully differential inputs and outputs,
comprehensive click-and-pop suppression, shutdown
control, and soft-start circuitry. The MAX9730 is fully
specified over the -40°C to +85°C extended tempera-
ture range and is available in ultra-small, lead-free,
20-bump WLP (2mm x 2.5mm) and 28-pin TQFN (4mm
x 4mm) packages.
Features2.7V to 5.5V OperationIntegrated Charge-Pump Power Supply63% Efficiency (VCC= 5V, POUT= 1W)2.4W Output Power into 8Ωat VCC= 5VClickless/Popless OperationSmall Thermally Efficient Packages
2mm x 2.5mm 20-Bump WLP
4mm x 4mm 28-Pin TQFN
MAX9730
2.4W, Single-Supply, Class G Power Amplifier
PARTPIN-PACKAGETEMP RANGE
MAX9730EWP+TG4520 WLP-40°C to +85°C
MAX9730ETI+28 TQFN-EP*-40°C to +85°C
Ordering Information
MAX9730IN+
FB+
RIN+
CPVDD
2.7V TO 5.5V
RIN-
CIN
CIN
IN-
FB-
OUT+
OUT--
CLASS G
OUTPUT
STAGE
CHARGE
PUMP
RFB+
RFB-
VCC
CPGNDGND
Simplified Block Diagram
19-0701; Rev 5; 3/10
EVALUATION KIT
AVAILABLE
MP3 Players
Personal Media Players
Handheld GamingConsoles
Cell Phones
Smartphones
Notebook Computers
Applications
Typical Application Circuit/Functional Diagram and Pin
Configurations appear at end of data sheet.
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
G45 indicates protective die coating.
*EP = Exposed pad.
MAX9730
2.4W, Single-Supply, Class G Power Amplifier
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= VCPVDD= VSHDN= 3.6V, VGND= VCPGND= 0V, RIN+= RIN-= 10kΩ, RFB+= RFB-= 10kΩ, RFS= 100kΩ, C1 = 4.7µF, C2 =
10µF; speaker load resistors (RL) are terminated between OUT+ and OUT-, unless otherwise stated; TA= TMINto TMAX, unless other-
wise 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.
(Voltages with respect to GND.)
VCC, CPVDD.............................................................-0.3V to +6V
PVSS, SVSS...............................................................-6V to +0.3V
CPGND..................................................................-0.3V to +0.3V
OUT+, OUT-...................................(SVSS- 0.3V) to (VCC+ 0.3V)
IN+, IN-, FB+, FB-......................................-0.3V to (VCC+ 0.3V)
C1N..........................................(PVSS- 0.3V) to (CPGND + 0.3V)
C1P.......................................(CPGND - 0.3V) to (CPVDD+ 0.3V)
FS, SHDN...................................................-0.3V to (VCC+ 0.3V)
Continuous Current Into/Out of
OUT+, OUT-, VCC, GND, SVSS.....................................800mA
CPVDD, CPGND, C1P, C1N, PVSS.................................800mA
Any Other Pin ..................................................................20mA
Continuous Power Dissipation (TA= +70°C)
20-Bump WLP (derate 10.3mW/°C above +70°C)........827mW
28-Pin TQFN (derate 20.8mW/°C above +70°C)........1667mW
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
Bump Temperature (soldering) Reflow............................+260°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
GENERAL
Supply Voltage RangeVCCInferred from PSRR test2.75.5V
Quiescent CurrentICC812mA
Chip Power DissipationPDISSVOUT = 2.8VRMS, f = 1kHz, RL = 8Ω0.9W
Shutdown CurrentISHDNSHDN = GND0.35µA
Turn-On TimetONTime from shutdown or power-on to full
operation50ms
Input DC Bias VoltageVBIASIN_ inputs1.11.241.4V
ILOAD = 0mA (slow mode)5583110Charge-Pump Oscillator
Frequency (Slow Mode)fOSC
ILOAD > 100mA (normal mode)230330430
kHz
Maximum Capacitive LoadCL200pF
VIH1.4SHDN Input Threshold (Note 3)VIL0.4V
SHDN Input Leakage Current±1µA
SPEAKER AMPLIFIER
TA = +25°C±3±15Output Offset VoltageVOSTMIN ≤ TA ≤ TMAX±20mV
Common-Mode Rejection RatioCMRRfIN = 1kHz (Note 4)68dB
Click-and-Pop LevelVCP
Peak voltage into/out of shutdown
A-weighted, 32 samples per second
(Notes 5, 6)
-52dBV
MAX9730
2.4W, Single-Supply, Class G Power Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(VCC= VCPVDD= VSHDN= 3.6V, VGND= VCPGND= 0V, RIN+= RIN-= 10kΩ, RFB+= RFB-= 10kΩ, RFS= 100kΩ, C1 = 4.7µF, C2 =
10µF; speaker load resistors (RL) are terminated between OUT+ and OUT-, unless otherwise stated; TA= TMINto TMAX, unless other-
wise noted. Typical values are at TA= +25°C.) (Notes 1, 2)
Note 1:All devices are 100% production tested at room temperature. All temperature limits are guaranteed by design.
Note 2:Testing performed with resistive and inductive loads to simulate an actual speaker load. For dynamic speakers, = 8Ω, 68µH.
Note 3:Designed for 1.8V logic.
Note 4:RIN_ and RFB_have 0.5% tolerance.
Note 5:Amplifier inputs AC-coupled to GND.
Note 6:Testing performed at room temperature with 8Ωresistive load in series with 68µH inductive load connected across BTL
output for speaker amplifier. Mode transitions are controlled by SHDN. VCPis the peak output transient expressed in dBV.
Note 7:Voltage gain is defined as: [VOUT+- VOUT-] / [VIN+- VIN-].
Note 8:Mode A tone burst tested at full amplitude for one cycle and half amplitude for nine cycles. Mode B tone burst tested at
full amplitude for three cycles and half amplitude for seven cycles. Full amplitude is defined as 1% THD+N at full battery
(VCC= 4.2V). Electrical Characteristicstable targets must be met at THD+N = 1% for one cycle (Mode A) and THD+N <
5% for three cycles (Mode B).
Note 9:Dynamic range is calculated by measuring the RMS voltage difference between a -60dBFS output signal and the noise
floor, then adding 60dB. Full scale is defined as the output signal needed to achieve 1% THD+N.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Voltage GainAV(Notes 4, 7)11.51212.5dB
VCC = 5V2.4
VCC = 4.2V1.67
VCC = 3.6V1.25Continuous Output PowerPOUTTHD+N = 1%, f = 1kHz,
RL = 8Ω
VCC = 3.0V0.8
VCC = 5V7.1
VCC = 4.2V5.9
VCC = 3.6V5.1
f = 1kHz, 1% THD+N,
ZL = 1µF + 10Ω
VCC = 3.0V4.2
VCC = 5V6.5
VCC = 4.2V5.4
VCC = 3.6V4.7
Output VoltageVOUT
f = 10kHz, 1% THD+N,
ZL = 1µF + 10Ω
VCC = 3.0V3.8
VRMS
VCC = 2.7V to 5.5V6377
f = 217Hz, 200mVP-P ripple77
f = 1kHz, 200mVP-P ripple77
Power-Supply Rejection Ratio
(Note 4)PSRR
f = 20kHz, 200mVP-P ripple58
RL = 8Ω, VOUT = 1kHz / 400mVRMS0.007Total Harmonic Distortion Plus
NoiseTHD+NRL = 8Ω, VOUT = 1kHz / 1VRMS0.12%
Signal-to-Noise RatioSNRVOUT = 0.5VRMS, inputs to GND by C1N,
A-weighted95dB
22Hz to 22kHz96Dynamic RangeDR(Note 9)A-weighted99dB
MAX9730
2.4W, Single-Supply, Class G Power Amplifier
Typical Operating Characteristics
(VCC= VCPVDD= VSHDN= 3.6V, VGND= VCPGND= 0V, RIN+ = RIN- = 10kΩ, RFB+ = RFB-= 10kΩ, RFS= 100kΩ, C1 = 4.7µF, C2 =
10µF, RL= 8Ω; speaker load resistors (RL) are terminated between OUT+ and OUT-, unless otherwise stated; TA= TMINto TMAX,
unless otherwise noted. Typical values are at TA= +25°C.) (Notes 1, 2)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9730 toc01
FREQUENCY (kHz)
THD+N (%)10.1
VCC = 3V
POUT = 0.69W
POUT = 0.33W
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9730 toc02
FREQUENCY (kHz)
THD+N (%)10.1
VCC = 3.6V
POUT = 0.37W
POUT = 0.93W
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9730 toc03
FREQUENCY (kHz)
THD+N (%)10.1
VCC = 5V
POUT = 0.83W
POUT = 2.08W
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9730 toc04
OUTPUT POWER (W)
THD+N (%)
VCC = 3V
fIN = 1kHz
fIN = 10kHz
fIN = 20Hz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9730 toc05
OUTPUT POWER (W)
THD+N (%)
VCC = 3.6V
fIN = 1kHz
fIN = 10kHz
fIN = 20Hz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9730 toc06
OUTPUT POWER (W)
THD+N (%)
fIN = 20Hz
fIN = 10kHz
fIN = 1kHz
VCC = 5V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9730 toc07
PSRR (dB)
VRIPPLE = 200mVP-P
POWER EFFICIENCY
vs. OUTPUT POWER
MAX9730 toc08
EFFICIENCY (%)
VCC = 3V
fIN = 1kHz
POWER EFFICIENCY
vs. OUTPUT POWER
MAX9730 toc09
EFFICIENCY (%)
VCC = 3.6V
fIN = 1kHz
Typical Operating Characteristics (continued)
(VCC= VCPVDD= VSHDN= 3.6V, VGND= VCPGND= 0V, RIN+ = RIN- = 10kΩ, RFB+ = RFB-= 10kΩ, RFS= 100kΩ, C1 = 4.7µF, C2 =
10µF, RL= 8Ω; speaker load resistors (RL) are terminated between OUT+ and OUT-, unless otherwise stated; TA= TMINto TMAX,
unless otherwise noted. Typical values are at TA= +25°C.) (Notes 1, 2)
MAX9730
2.4W, Single-Supply, Class G Power Amplifier
POWER EFFICIENCY
vs. OUTPUT POWER
MAX9730 toc10
OUTPUT POWER (W)
EFFICIENCY (%)1
VCC = 5V
fIN = 1kHz
STARTUP WAVEFORM
MAX9730 toc11
10ms/div
SHDN
5V/div
OUT+ - OUT-
500mV/div
SHUTDOWN WAVEFORM
MAX9730 toc12
10ms/div
SHDN
5V/div
OUT+ - OUT-
500mV/div
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9730 toc13
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
MAX9730 toc14
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT (
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9730 toc15
OUTPUT POWER (W)
10% THD+N
1% THD+N
fIN = 1kHz
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9730 toc16
OUTPUT POWER (W)604020
VCC = 5V
VCC = 3.6V
fIN = 1kHz
POUT AT 1% THD+N
MAX9730
2.4W, Single-Supply, Class G Power Amplifier
CLASS G OUTPUT WAVEFORM
MAX9730 toc17
200μs/div
OUT+ - OUT-
10V/div
OUT-
5V/div
OUT+
5V/div
1% THD+N
FREQUENCY RESPONSE
MAX9730 toc18
FREQUENCY (Hz)
GAIN (dB)
10k1k100100k
POUT = 1W
PACKAGE THERMAL DISSIPATION AND
OUTPUT POWER vs. TEMPERATURE
MAX9730 toc19
TEMPERATURE (°C)
PACKAGE THERMAL DISSIPATION (W)
OUTPUT POWER (W)706050403020100-10-20-30
VCC = 5V
OUTPUT POWER
PACKAGE THERMAL
DISSIPATION
Pin Description
Typical Operating Characteristics (continued)
(VCC= VCPVDD= VSHDN= 3.6V, VGND= VCPGND= 0V, RIN+ = RIN- = 10kΩ, RFB+ = RFB-= 10kΩ, RFS= 100kΩ, C1 = 4.7µF, C2 =
10µF, RL= 8Ω; speaker load resistors (RL) are terminated between OUT+ and OUT-, unless otherwise stated; TA= TMINto TMAX,
unless otherwise noted. Typical values are at TA= +25°C.) (Notes 1, 2)
PIN
TQFNWLPNAMEFUNCTION
1B2SHDNShutdown
2, 5, 6, 8, 11, 17,
19, 23, 25, 28—N.C.No Connection. No internal connection.A2C1PCharge-Pump Flying Capacitor, Positive Terminal. Connect a 4.7µF
capacitor between C1P and C1N.
4A3CPVDDCharge-Pump Positive SupplyA4FB-Negative Amplifier FeedbackA5IN-Negative Amplifier InputB5IN+Positive Amplifier InputB4FB+Positive Amplifier FeedbackC5FSCharge-Pump Frequency Set. Connect a 100kΩ resistor from FS to
GND to set the charge-pump switching frequency.
14, 22D1, D5VCCSupply Voltage. Bypass with a 10µF capacitor to GND.
15, 21C2, C4SVSSAmplifier Negative Power Supply. Connect to PVSS.D4OUT-Negative Amplifier OutputD3GNDGroundD2OUT+Positive Amplifier OutputC1PVSSCharge-Pump Output. Connect a 10µF capacitor between PVSS and
CPGND.B1C1NCharge-Pump Flying Capacitor, Negative Terminal. Connect a 4.7µF
capacitor between C1N and C1P.A1CPGNDCharge-Pump Ground. Connect to GND.—EPExposed Pad. Connect the TQFN EP to GND.

Partno	Mfg	Dc	Qty	Available	Descript
MAX9730ETI+T \|MAX9730ETIT	MAX	N/a	5000	avai	2.4W, Single-Supply Class G Power Amplifier
MAX9730ETI+T	MAXIM	N/a	5000	avai	2.4W, Single-Supply Class G Power Amplifier
MAX9730ETI+ \|MAX9730ETI	MAXIM	N/a	1436	avai	2.4W, Single-Supply Class G Power Amplifier