General Description
The MAX9718/MAX9719 differential input audio power
amplifiers are ideal for portable audio devices with
internal speakers. The differential input structure
improves noise rejection and provides common-mode
rejection. A bridge-tied load (BTL) architecture mini-
mizes external component count, while providing high-
quality, power audio amplification. The MAX9718 is a
single-channel amplifier while the MAX9719 is a dual-
channel amplifier for stereo systems. Both devices
deliver 1.4W continuous average power per channel to
a 4Ωload with less than 1% THD+N while operating
from a single +5V supply. The devices are available as
adjustable gain amplifiers or with internally fixed gains
of 0dB, 3dB, and 6dB to reduce component count.
A shutdown input disables the bias generator and
amplifiers and reduces quiescent current consumption
to less than 100nA. The MAX9718 shutdown input can
be set as active high or active low. These devices fea-
ture Maxim’s comprehensive click-and-pop suppres-
sion circuitry that reduces audible clicks and pops
during startup and shutdown.
The MAX9718 is pin compatible with the LM4895,
and is available in 9-bump UCSP™, 10-pin TDFN, and
10-pin μMAX®packages. The MAX9719 is available in
16-pin TQFN, 16-pin TSSOP, and 16-bump UCSP pack-
ages. Both devices operate over the -40°C to +85°C
extended temperature range.
Applications
Mobile Phones
PDAs
Portable Devices
Features
o2.7V to 5.5V Single-Supply Operation
oVery High -93dB PSRR at 217Hz
o1.4W into 4Ωat 1% THD+N (per Channel)
oDifferential Input
oInternal Fixed Gain to Reduce Component Count
oAdjustable Gain Option (MAX9718A/H/MAX9719A)
o100nA Low-Power Shutdown Mode
oNo Audible Clicks or Pops at Power-Up/Down
oImproved Performance Pin-Compatible Upgrade
to LM4895 (MAX9718D/G)
o1.8V Logic Compatible
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
MAX9719
SINGLE SUPPLY
2.7V TO 5.5V
SHDN
INL+
INL-
INR+
INR-
MAX9718
SINGLE SUPPLY
2.7V TO 5.5V
SHDM
SHDN
IN+ OUT+
OUT-
OUTR-
OUTR+
OUTL-
OUTL+
IN-
Simplified Block Diagrams
19-3050; Rev 7; 4/10
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.
Ordering Information continued at end of data sheet.
Pin Configurations appear at end of data sheet.
EVALUATION KIT
AVAILABLE
UCSP is a trademark of Maxim Integrated Products, Inc.
μMAX is a registered trademark of Maxim Integrated Products, Inc.
PART TEMP RANGE PIN-
PACKAGE
T O P
M A R K
M A X9 7 1 8 AE BL+ TG 45 -40°C to +85°C 3 x 3 UCSP +ADX
MAX9718AETB+T -40°C to +85°C 10 TDFN-EP* +AAV
+
Denotes lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
G45 indicates protective die coating.
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—5V Supply
(VCC = 5V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF= 10kΩ(MAX971_A/H),
TA= +25°C. CBIAS = 0.1μF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
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.
Supply Voltage (VCC to GND) ..................................-0.3V to +6V
Any Other Pin to GND ...............................-0.3V to (VCC + 0.3V)
IN_, BIAS, SHDM, SHDN, SHDN Continuous Current ........20mA
OUT_ Short-Circuit Duration to GND or VCC .............Continuous
Continuous Power Dissipation (TA= +70°C)
9-Bump UCSP (derate 5.2mW/°C above +70°C) .......1067mW
10-Pin TDFN (derate 24.4mW/°C above +70°C) ........1951mW
10-Pin μMAX (derate 10.3mW/°C above +70°C) ..........825mW
16-Bump UCSP (derate 8.2mW/°C above +70°C) .....1633mW
16-Pin TQFN (derate 16.9mW/°C above +70°C) ........1349mW
16-Pin TSSOP (derate 21.3mW/°C above +70°C) ......1702mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage VCC 2.7 5.5 V
Supply Current ICC VIN- = VIN+ = VBIAS, TA = -40°C to +85°C,
per amplifier (Note 2) 5.0 7.5 mA
Shutdown Supply Current ISHDN SHDN = SHDM = SHDN = GND, per amplifier 0.1 1 μA
VIH 0.7 x VCC
SHDN, SHDN, SHDM
Threshold VIL MAX9718A/B/C/D 0.3 x VCC
V
VIH 1.4
SHDN, SHDN, SHDM
Threshold VIL
MAX9718E/F/G/H 0.4 V
AV = 0dB, MAX971_A/H,
MAX971_B/E ±1 ±10
AV = 3dB, MAX971_C/F ±1 ±15
Output Offset Voltage VOS VIN- = VIN+ = VBIAS
AV = 6dB, MAX971_D/G ±1 ±20
mV
AV = 0dB, MAX971_B/E 0.5 V
CC - 0.5
AV = 3dB, MAX971_C/F 0.5 V
CC - 0.6
Inferred from
CMRR test AV = 6dB, MAX971_D/G 0.5 V
CC - 0.8
Common-Mode Input Voltage VIC
External gain, MAX971_A/H 0.5 VCC - 1.2
V
Input Impedance RIN MAX971_B/E, MAX971_C/F, MAX971_D/G 10 15 20 kΩ
-50 -60
Common-Mode Rejection Ratio CMRR fN = 1kHz -60 dB
f = 217Hz -93
Power-Supply Rejection Ratio PSRR
V
IN- = V
IN+ = V
BIAS,
V
RIPPLE = 200m V
P-P,
RL = 8Ω , C
BIAS = 1μF f = 1kHz -90
dB
RL = 8Ω0.8 1.1
Output Power POUT THD+N = 1%,
fIN = 1kHz (Note 4) RL = 4Ω1.4 W
Total Harmonic Distortion Plus
Noise THD+N RL = 8Ω, fIN = 1kHz, POUT = 0.75W,
VCC = 5V, AV = 6dB (Note 5) 0.002 %
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—5V Supply (continued)
(VCC = 5V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF= 10kΩ(MAX971_A/H),
TA= +25°C. CBIAS = 0.1μF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
ELECTRICAL CHARACTERISTICS—3V Supply
(VCC = 3V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF= 10kΩ(MAX971_A/H),
TA= +25°C. CBIAS = 0.1μF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Gain Accuracy MAX971_B/E, MAX971_C/F, MAX971_D/G ±1 %
Channel-to-Channel Gain
Matching MAX9719B/E, MAX9719C/F, MAX9719D/G ±1 %
Signal-to-Noise Ratio SNR POUT = 1W, RL = 8Ω-104 dB
Thermal-Shutdown Threshold +160 °C
Thermal-Shutdown Hysteresis 15 °C
Maximum Capacitive Drive CLOAD Bridge-tied capacitance 500 pF
Power-Up/Enable from
Shutdown Time tPU 10 ms
Shutdown Time tSHDN 3.5 μs
Turn-Off Transient VPOP (Note 6) 50 mV
Crosstalk MAX9719, fIN = 1kHz -85 dB
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Current ICC VIN- = VIN+ = VBIAS, TA = -40°C to +85°C,
per amplifier (Note 2) 3.8 6.0 mA
Shutdown Supply Current ISHDN SHDN = SHDM = SHDN = GND, per amplifier 0.1 1 μA
VIH 0.7 x V
CC
SHDN, SHDN, SHDM
Threshold VIL 0.3 x V
CC
V
Common-Mode Bias Voltage VBIAS (Note 3) VCC/2
- 5% VCC/2 VCC/2
+ 5% V
AV = 0dB, MAX971_A/H
MAX971_B/E ±1 ±10
AV = 3dB, MAX971_C/F ±1 ±15
Output Offset Voltage VOS VIN- = VIN+ = VBIAS
AV = 6dB, MAX971_D/G ±1 ±20
mV
AV = 0dB, MAX971_B/E 0.5 V
CC - 0.7
AV = 3dB, MAX971_C/F 0.5 V
CC - 0.8
Inferred from
CMRR test AV = 6dB, MAX971_D/G 0.5 V
CC - 1.0
Common-Mode Input Voltage VIC
External gain, MAX971_A/H 0.5 V
CC - 1.2
V
Input Impedance RIN MAX971_B/E, MAX971_C/F, MAX971_D/G 10 15 20 kΩ
-50 -60
Common-Mode Rejection Ratio CMRR fN = 1kHz -70 dB
f = 217Hz -93
Power-Supply Rejection Ratio PSRR
V
IN- = V
IN+ = V
BIAS,
V
RIPPLE = 200m V
P-P,
RL = 8Ω ,
C
BIAS = 1μF f = 1kHz -90
dB
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc01
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
OUTPUT POWER = 1W
OUTPUT POWER = 50mW
VCC = 5V
RL = 4Ω
AV = 2
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc02
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
VCC = 5V
RL = 4Ω
AV = 4
OUTPUT POWER = 1W
OUTPUT POWER = 200mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc03
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
VCC = 5V
RL = 8Ω
AV = 2
OUTPUT POWER = 250mW
OUTPUT POWER = 750mW
Typical Operating Characteristics
(VCC = 5V, CBIAS = 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)
Note 1: All specifications are 100% tested at TA= +25°C. Specifications over temperature (TA= TMIN to TMAX) are guaranteed by
design, not production tested.
Note 2: Quiescent power-supply current is specified and tested with no load. Quiescent power-supply current depends on the offset
voltage when a practical load is connected to the amplifier. Guaranteed by design.
Note 3: Common-mode bias voltage is the voltage on BIAS and is nominally VCC/2.
Note 4: Output power is specified by a combination of a functional output current test and characterization analysis.
Note 5: Measurement bandwidth for THD+N is 22Hz to 22kHz.
Note 6: Peak voltage measured at power-on, power-off, into or out of SHDN. Bandwidth defined by A-weighted filters, inputs at AC
GND. VCC rise and fall times greater than or equal to 1ms.
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—3V Supply (continued)
(VCC = 3V, GND = 0, SHDN/SHDN = VCC (MAX9718/MAX9719), SHDM = GND (MAX9718), RIN = RF= 10kΩ(MAX971_A/H),
TA= +25°C. CBIAS = 0.1μF, no load. Typical values are at TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Power POUT RL = 8Ω, THD+N = 1%, fIN = 1kHz (Note 4) 475 mW
Total Harmonic Distortion Plus
Noise THD+N RL = 8Ω, fIN = 1kHz, POUT = 0.25W,
AV = 6dB 0.003 %
Thermal-Shutdown Threshold +160 °C
Thermal-Shutdown Hysteresis 15 °C
Maximum Capacitive Drive CLOAD Bridge-tied capacitance 500 pF
Power-Up/Enable from
Shutdown Time tPU 10 ms
Shutdown Time tSHDN 3μs
Turn-Off Transient VPOP (Note 6) 40 mV
Crosstalk MAX9719, fIN = 1kHz -85 dB
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
_______________________________________________________________________________________ 5
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc04
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
VCC = 5V
RL = 8Ω
AV = 4
OUTPUT POWER = 200mW
OUTPUT POWER = 800mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc05
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
VCC = 3V
RL = 4Ω
AV = 2
OUTPUT POWER = 250mW
OUTPUT POWER = 50mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc06
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
VCC = 3V
RL = 4Ω
AV = 4
OUTPUT POWER = 70mW
OUTPUT POWER = 175mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc07
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
VCC = 3V
RL = 8Ω
AV = 2
OUTPUT POWER = 250mW
OUTPUT POWER = 100mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc08
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
VCC = 3V
RL = 8Ω
AV = 4
OUTPUT POWER = 200mW
OUTPUT POWER = 50mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc09
OUTPUT POWER (W)
THD+N (%)
0.2 0.4 0.6 0.8 1.2 1.41.0 1.8
0.01
0.1
1
10
100
0.001
02.0
fIN = 1kHz
fIN = 100Hz
fIN = 10kHz
1.6
VCC = 5V
RL = 4Ω
AV = 2
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc10
OUTPUT POWER (W)
THD+N (%)
0.5 1.51.0
0.01
0.1
1
10
100
0.001
02.0
fIN = 1kHz
fIN = 100Hz
fIN = 10kHz
VCC = 5V
RL = 4Ω
AV = 4
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc11
OUTPUT POWER (W)
THD+N (%)
0.2 0.6 0.8 1.0 1.20.4
0.01
0.1
1
10
100
0.001
0 1.4
fIN = 1kHz
fIN = 100Hz fIN = 10kHz
VCC = 5V
RL = 8Ω
AV = 2
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc12
OUTPUT POWER (W)
THD+N (%)
0.2 0.6 0.8 1.0 1.20.4
0.01
0.1
1
10
100
0.001
0 1.4
fIN = 100Hz
fIN = 1kHz
fIN = 10kHz
VCC = 5V
RL = 8Ω
AV = 4
Typical Operating Characteristics (continued)
(VCC = 5V, CBIAS = 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
6 _______________________________________________________________________________________
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc13
OUTPUT POWER (mW)
THD+N (%)
100 300 400 500200
0.01
0.1
1
10
100
0.001
0600
fIN = 10kHz
fIN = 1kHz fIN = 100Hz
VCC = 3V
RL = 4Ω
AV = 2
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc14
OUTPUT POWER (mW)
THD+N (%)
100 300 400 500200
0.01
0.1
1
10
100
0.001
0600
fIN = 1kHz
fIN = 100Hz
fIN = 10kHz
VCC = 3V
RL = 4Ω
AV = 4
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc15
OUTPUT POWER (mW)
THD+N (%)
100 300 400 500200
0.01
0.1
1
10
100
0.001
0600
fIN = 1kHz
fIN = 100Hz
fIN = 10kHz
VCC = 3V
RL = 8Ω
AV = 2
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc16
OUTPUT POWER (mW)
THD+N (%)
100 300 400 500200
0.01
0.1
1
10
100
0.001
0
fIN = 1kHz
fIN = 100Hz
fIN = 10kHz
VCC = 3V
RL = 8Ω
AV = 4
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. COMMON-MODE VOLTAGE
MAX9718 toc17
COMMON-MODE VOLTAGE (V)
THD+N (%)
13452
0.001
0.01
0.0001
0
VCC = 5V
PO = 200mW
AV = 2
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. COMMON-MODE VOLTAGE
MAX9718 toc18
COMMON-MODE VOLTAGE (V)
THD+N (%)
0.5 1.5 2.0 2.5 3.01.0
0.001
0.01
0.0001
0
VCC = 3V
PO = 200mW
AV = 2
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9718 toc19
SUPPLY VOLTAGE (V)
OUTPUT POWER
5.04.54.03.53.0
0.5
1.0
1.5
2.0
2.5
0
2.5 5.5
RL = 4Ω
f = 1kHz
AV = 2
THD+N = 10%
THD+N = 1%
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9718 toc20
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
5.04.54.03.53.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
2.5 5.5
RL = 8Ω
f = 1kHz
AV = 2
THD+N = 10%
THD+N = 1%
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9718 toc21
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)
10010
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
1
VCC = 5V
f = 1kHz
AV = 2
THD+N = 10%
THD+N = 1%
Typical Operating Characteristics (continued)
(VCC = 5V, CBIAS = 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)
MAX9718/MAX9719
GAIN AND PHASE
vs. FREQUENCY
MAX9718 toc27
FREQUENCY (Hz)
GAIN/PHASE (°/dB)
10k1k100
-120
-90
-60
-30
0
30
60
90
120
150
-150
10 100k
AV = 60dB
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
_______________________________________________________________________________________ 7
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9718 toc22
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
10010
200
100
300
400
500
600
0
1
THD+N = 10%
THD+N = 1%
VCC = 3V
f = 1kHz
AV = 2
POWER DISSIPATION
vs. OUTPUT POWER
MAX9718 toc23
OUTPUT POWER (W)
POWER DISSIPATION (W)
1.51.20.90.60.3
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
0 1.8
VCC = 5V
RL = 4Ω
f = 1kHz
AV = 2
POWER DISSIPATION
vs. OUTPUT POWER
MAX9718 toc24
OUTPUT POWER (W)
POWER DISSIPATION (W)
1.21.00.80.60.40.2
0.2
0.4
0.6
0.8
1.0
0
0 1.4
VCC = 5V
RL = 8Ω
f = 1kHz
AV = 2
POWER DISSIPATION
vs. OUTPUT POWER
MAX9718 toc25
OUTPUT POWER (mW)
POWER DISSIPATION (mW)
600500400300200100
100
200
300
400
500
600
700
0
0700
VCC = 3V
RL = 4Ω
f = 1kHz
AV = 2
POWER DISSIPATION
vs. OUTPUT POWER
MAX9718 toc26
OUTPUT POWER (mW)
POWER DISSIPATION (mW)
400300200100
50
100
150
200
250
300
350
0
0500
VCC = 3V
RL = 8Ω
f = 1kHz
AV = 2
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9718 toc28
FREQUENCY (Hz)
PSRR (dB)
10k1k100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10 100k
VRIPPLE = 200mVP-P
RL = 8Ω
CBIAS = 1μF
VCC = 5V
VCC = 3V
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
MAX9718 toc29
FREQUENCY (Hz)
CMRR (dB)
10k1k100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10 100k
VRIPPLE = 200mVP-P
RL = 8Ω
CBIAS = 1μF
VCC = 5V
VCC = 3V
Typical Operating Characteristics (continued)
(VCC = 5V, CBIAS = 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(VCC = 5V, CBIAS = 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)
CROSSTALK
vs. FREQUENCY
MAX9718 toc31
FREQUENCY (Hz)
CROSSTALK (dB)
10k1k100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
-110
-120
10 100k
CHANNEL 2
CHANNEL 1
VCC = 3V
VRIPPLE = 200mVP-P
RL = 8Ω
CBIAS = 1μF
ENTERING SHUTDOWN
MAX9718 toc32
100μs/div
CBIAS = 0.1μF
VCC = 3V
RL = 8ΩSHDN
2V/div
OUT+
1V/div
OUT-
1V/div
OUT+ - OUT-
200mV/div
EXITING SHUTDOWN
MAX9718 toc33
4ms/div
CBIAS = 0.1μF
VCC = 3V
RL = 8Ω
SHDN
2V/div
OUT+
1V/div
OUT-
1V/div
OUT+ - OUT-
200mV/div
ENTERING POWER-DOWN
MAX9718 toc34
100μs/div
CBIAS = 0.1μF
VCC = 3V
RL = 8ΩSHDN
1V/div
OUT+
1V/div
OUT-
1V/div
OUT+ - OUT-
200mV/div
EXITING POWER-DOWN
MAX9718 toc35
SHDN
2V/div
OUT+
1V/div
OUT-
1V/div
4ms/div
CBIAS = 0.1μF
VCC = 3V
RL = 8Ω
OUT+ - OUT-
200mV/div
CROSSTALK
vs. FREQUENCY
MAX9718 toc30
FREQUENCY (Hz)
CROSSTALK (dB)
10k1k100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
-110
-120
10 100k
CHANNEL 2
CHANNEL 1
VCC = 5V
VRIPPLE = 200mVP-P
RL = 8Ω
CBIAS = 1μF
MAX9718/MAX9719
TURN-ON TIME
vs. DC BIAS BYPASS CAPACITOR
MAX9718 toc38
CBIAS (μF)
TURN-ON TIME (ms)
0.800.600.20 0.40
10
20
30
40
50
60
70
80
0
0 1.00
VCC = 5V
VCC = 3V
TO -3dB OF FINAL VALUE
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
_______________________________________________________________________________________ 9
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX9718 toc37
TEMPERATURE (°C)
SHUTDOWN CURRENT (μA)
603510-15
-0.02
-0.01
0
0.01
0.02
0.03
-0.03
-40 85
VCC = 5V
VCC = 3V
Typical Operating Characteristics (continued)
(VCC = 5V, CBIAS = 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, TA= +25°C, unless otherwise noted.)
Pin Description
PIN
MAX9718 MAX9719
TDFN-EP/
µMAX UCSP TQFN-EP UCSP TSSOP-EP
NAME FUNCTION
1 C2 — — — SHDN Shutdown Input. The polarity of SHDN is dependent on the
state of SHDM.
——9B311SHDN Shutdown Input. Active-low shutdown input.
2 C1 — — — IN- Inverting Input
3 B2 — — — SHDM
Shutdown-Mode Polarity Input. SHDM controls the polarity
of SHDN. Connect SHDM high for an active-high SHDN
input. Connect SHDM low for an active-low SHDN input
(
see Table 1
)
.
4 A1 — — — IN+ Noninverting Input
5 A2 5 B2 7 BIAS DC Bias Bypass
6 A3 — — — OUT- Bridge Amplifier Negative Output
7 B3 1, 6, 11 A2, C2,
C4 3, 8, 13 GND Ground
8 — 13 — 15 N.C. No Connection. Not internally connected.
9 B1 8, 14 A4, D3 16, 10 VCC Power Supply
10 C3 — — — OUT+ Bridge Amplifier Positive Output
— — 2 C1 4 INR+ Right-Channel Noninverting Input
— — 3 B1 5 INL- Left-Channel Inverting Input
— — 4 A1 6 INL+ Left-Channel Noninverting Input
— — 7 A3 9 OUTL+ Left-Channel Bridge Amplifier Positive Output
SUPPLY CURRENT
vs. TEMPERATURE
MAX9718 toc36
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
603510-15
1
2
3
4
5
6
0
-40 85
VCC = 5V
VCC = 3V
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
10 ______________________________________________________________________________________
Pin Description (continued)
PIN
TDFN-EP/
µMAX UCSP TQFN-EP UCSP TSSOP-EP NAME FUNCTION
— — 10 B4 12 OUTL- Left-Channel Bridge Amplifier Negative Output
— — 12 D4 14 OUTR+ Right-Channel Bridge Amplifier Positive Output
— — 15 D2 1 OUTR- Right-Channel Bridge Amplifier Negative Output
— — 16 D1 2 INR- Right-Channel Inverting Input
—————EP
Exposed Pad. Connect EP to GND.
Detailed Description
The MAX9718/MAX9719 are 1.4W BTL speaker ampli-
fiers. The MAX9718 is a mono speaker amplifier, while
the MAX9719 is a stereo speaker amplifier. Both
devices feature a low-power shutdown mode and indus-
try-leading click-and-pop suppression. The MAX9718
features a two-input shutdown scheme to configure
shutdown for active high or active low. These devices
consist of high output-current audio amps configured as
BTL amplifiers (see the
Functional Diagrams
). Both
adjustable and fixed gain (0dB, 3dB, 6dB) versions are
available.
BIAS
These devices operate from a single 2.7V to 5.5V sup-
ply and feature an internally generated, common-mode
bias voltage of VCC/2 referenced to ground. BIAS pro-
vides both click-and-pop suppression and sets the DC
bias level for the audio outputs. Choose the value of the
bypass capacitor as described in the
BIAS Capacitor
section. Do not connect external loads to BIAS as this
can affect the overall performance.
Shutdown Mode
The MAX9718/MAX9719 feature a 100nA low-power
shutdown mode that reduces quiescent current con-
sumption. Entering shutdown disables the device’s bias
circuitry, the amplifier outputs go high impedance, and
BIAS is driven to GND. The MAX9718 SHDM input con-
trols the polarity of SHDN. Drive SHDM high for an
active-high SHDN input. Drive SHDM low for an active-
low SHDN input (see Table 1). The MAX9719 features
an active-low shutdown input, SHDN.
Click-and-Pop Suppression
The MAX9718/MAX9719 feature Maxim’s industry-lead-
ing click-and-pop suppression circuitry. During startup,
the amplifier common-mode bias voltage ramps to the
DC bias point. When entering shutdown, the amplifier
outputs are high impedance to 100kΩbetween both
outputs. This scheme minimizes the energy present in
the audio band.
Applications Information
BTL Amplifier
The MAX9718/MAX9719 are designed to drive a load
differentially, a configuration referred to as bridge-tied
load or BTL. The BTL configuration (Figure 1) offers
advantages over the single-ended configuration, where
one side of the load is connected to ground. Driving the
load differentially doubles the output voltage compared
to a single-ended amplifier under similar conditions.
Substituting 2 x VOUT(P-P) for VOUT(P-P) into the following
equations yields four times the output power due to
doubling of the output voltage:
Since the differential outputs are biased at midsupply,
there is no net DC voltage across the load. This elimi-
nates the need for DC-blocking capacitors required for
single-ended amplifiers. These capacitors can be
large, expensive, consume board space, and degrade
low-frequency performance.
PV
R
OUT RMS
L
=2
VV
RMS OUT P P
=−()
22
SHDM SHDN OPERATIONAL MODE
0 0 Shutdown
0 1 Normal operation
1 0 Normal operation
1 1 Shutdown
Table 1. Shutdown Mode Selection
(MAX9718 Only)
Power Dissipation and Heat Sinking
Under normal operating conditions, the MAX9718/
MAX9719 dissipate a significant amount of power. The
maximum power dissipation for each package is given
in the
Absolute Maximum Ratings
section under
Continuous Power Dissipation or can be calculated by
the following equation:
where TJ(MAX) is +150°C, TAis the ambient tempera-
ture, and θJA is the reciprocal of the derating factor in
°C/W as specified in the
Absolute Maximum Ratings
section. For example, θJA of the TQFN package is
+59.2°C/W.
The increase in power delivered by the BTL configura-
tion directly results in an increase in internal power dis-
sipation over the single-ended configuration. The
maximum internal power dissipation for a given VCC
and load is given by the following equation:
If the internal power dissipation for a given application
exceeds the maximum allowed for a given package,
reduce power dissipation by increasing the ground
plane heat-sinking capability and the size of the traces
to the device (see the
Layout and Grounding
section).
Other methods for reducing power dissipation are to
reduce VCC, increase load impedance, decrease ambi-
ent temperature, reduce gain, or reduce input signal.
Thermal-overload protection limits total power dissipa-
tion in the MAX9718/MAX9719. When the junction tem-
perature exceeds +160°C, the thermal protection
circuitry disables the amplifier output stage. The ampli-
fiers are enabled once the junction temperature cools
by 15°C. A pulsing output under continuous thermal
overload results as the device heats and cools.
For optimum power dissipation and heat sinking, con-
nect the exposed pad found on the µMAX, TDFN,
TQFN, and TSSOP packages to a large ground plane.
Fixed Differential Gain
The MAX9718B/E, MAX9718C/F, MAX9718D/G,
MAX9719B, MAX9719C, and MAX9719D feature inter-
nally fixed gains (see the
Selector Guide
). This simpli-
fies design, decreases required footprint size, and
eliminates external gain-setting resistors. Resistors R1
and R2shown in the
Functional Diagrams
are used to
achieve each fixed gain.
Adjustable Differential Gain
Gain-Setting Resistors
External feedback resistors set the gain of the
MAX9718A/H and MAX9719A. Resistors RFand RIN
(Figure 2) set the gain of the amplifier as follows:
where AVis the desired voltage gain. Hence, an RIN of
10kΩand an RFof 20kΩyields a gain of 2V/V, or 6dB.
RFcan be either fixed or variable, allowing the use of a
digitally controlled potentiometer to alter the gain under
software control.
AR
R
VF
IN
=
PV
R
DMAX CC
L
()
=22
2
π
PTT
DMAX JMAX A
JA
() ()
=−
θ
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
______________________________________________________________________________________ 11
+1 VOUT(P-P)
2 x VOUT(P-P)
VOUT(P-P)
-1
Figure 1. Bridge-Tied Load Configuration
RF
RF
MAX9718A/H
MAX9719A
BIAS
GENERATOR
INVERTING
DIFFERENTIAL
INPUT
NONINVERTING
DIFFERENTIAL
INPUT (OPTIONAL)
(OPTIONAL)
IN+
IN-
OUT+
OUT-
RIN
RIN
Figure 2. Setting the MAX9718A/H/MAX9719A Gain
MAX9718/MAX9719
Input Filter
The fully differential amplifier inputs can be biased at
voltages other than midsupply. The common-mode
feedback circuit adjusts for input bias, ensuring the
outputs are still biased at midsupply. Input capacitors
are not required as long as the common-mode input
voltage is within the specified range listed in the
Electrical Characteristics
table.
If input capacitors are used, input capacitor CIN, in
conjunction with RIN, forms a highpass filter that
removes the DC bias from an incoming signal. The AC-
coupling capacitor allows the amplifier to bias the sig-
nal to an optimum DC level. Assuming zero-source
impedance, the -3dB point of the highpass filter is
given by:
Setting f-3dB too high affects the low-frequency
response of the amplifier. Use capacitors with
dielectrics that have low-voltage coefficients, such as
tantalum or aluminum electrolytic. Capacitors with high-
voltage coefficients, such as ceramics, can increase
distortion at low frequencies.
BIAS Capacitor
BIAS is the output of the internally generated VCC/2
bias voltage. The BIAS bypass capacitor, CBIAS,
improves PSRR and THD+N by reducing power supply
and other noise sources at the common-mode bias
node, and also generates the clickless/popless startup
DC bias waveform for the speaker amplifiers. Bypass
BIAS with a 0.1µF capacitor to GND. Larger values of
CBIAS (up to 1µF) improve PSRR, but slow down
tON/tOFF times. A 1µF CBIAS capacitor slows turn-on
and turn-off times by 10 and improves PSRR by 20dB
(at 1kHz). Do not connect external loads to BIAS.
Supply Bypassing
Proper power-supply bypassing ensures low-noise,
low-distortion performance. Connect a 1µF ceramic
capacitor from VCC to GND. Add additional bulk
capacitance as required by the application. Locate the
bypass capacitor as close to the device as possible.
Layout and Grounding
Good PC board layout is essential for optimizing perfor-
mance. Use large traces for the power-supply inputs and
amplifier outputs to minimize losses due to parasitic trace
resistance and route heat away from the device. Good
grounding improves audio performance, minimizes
crosstalk between channels, and prevents any digital
switching noise from coupling into the audio signal.
The MAX9718/MAX9719 TDFN, TQFN, TSSOP, and
µMAX packages feature exposed thermal pads on their
undersides. This pad lowers the thermal resistance of the
package by providing a direct-heat conduction path
from the die to the PC board. Connect the exposed pad
to the ground plane using multiple vias, if required.
UCSP Applications Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, PC board tech-
niques, bump-pad layout, and recommended reflow tem-
perature profile, as well as the latest information on
reliability testing results, refer to the Application Note
1891:
Wafer-Level Packaging (WLP) and Its Applications
.
fRC
dB IN IN
−=
3
1
2π
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
12 ______________________________________________________________________________________
PART MONO STEREO GAIN
(dB)
SELECTABLE
SHUTDOWN
POLARITY
MAX9718A/H √— Adjustable √
MAX9718B/E √—0 √
MAX9718C/F √—3 √
MAX9718D/G √—6 √
MAX9719A — √Adjustable —
MAX9719B — √0—
MAX9719C — √3—
MAX9719D — √6—
Selector Guide
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
______________________________________________________________________________________ 13
PART TEMP RANGE PIN-
PACKAGE
T O P
M A R K
MAX9718AEUB+ -40°C to +85°C 10 μM AX - E P * +AAAA
M AX 9718BE BL+ TG45 -40°C to +85°C 3 x 3 U C S P +ADX
MAX9718BETB+T -40°C to +85°C 10 TD FN - E P * +AAW
MAX9718BEUB+ -40°C to +85°C 10 μM AX - E P * +AAAB
M AX 9718C E BL+ TG45 -40°C to +85°C 3 x 3 U C S P +ADZ
MAX9718CETB+T -40°C to +85°C 10 TD FN - E P * +AAX
MAX9718CEUB+ -40°C to +85°C 10 μM AX - E P * +AAAC
M AX 9718D E BL+ TG45 -40°C to +85°C 3 x 3 U C S P +AEA
MAX9718DETB+T -40°C to +85°C 10 TD FN - E P * +AAY
MAX9718DEUB+ -40°C to +85°C 10 μM AX - E P * +AAAD
M AX 9718E E BL+ TG45 -40°C to +85°C 3 x 3 U C S P +AFB
MAX9718EETB+T -40°C to +85°C 10 TD FN - E P * +ASY
MAX9718EEUB+ -40°C to +85°C 10 μM AX - E P * +AAAJ
M AX 9718FE BL+ TG45 -40°C to +85°C 3 x 3 U C S P +AFC
MAX9718FETB+T -40°C to +85°C 10 TD FN - E P * +ASZ
MAX9718FEUB+ -40°C to +85°C 10 μM AX - E P * +AAAK
M AX 9718G E BL+ TG45 -40°C to +85°C 3 x 3 U C S P +AFD
MAX9718GETB+T -40°C to +85°C 10 TD FN - E P * +ATA
PART TEMP RANGE PIN-
PACKAGE
T O P
M A R K
MAX9718GEUB+ -40°C to +85°C 10 μM AX - E P * +AAAL
M AX 9718H E BL+ TG45 -40°C to +85°C 3 x 3 U C S P +AFE
MAX9718HETB+T -40°C to +85°C 10 TD FN - E P * +ATB
MAX9718HEUB+ -40°C to +85°C 10 μM AX - E P * +AAAM
MAX9719AEBE+T -40°C to +85°C 4 x 4 U C S P —
MAX9719AETE+ -40°C to +85°C 16 TQ FN - E P *—
MAX9719AEUE+ -40°C to +85°C 16 TS S O P - E P *—
M AX 9719BE BE + TG45 -40°C to +85°C 4 x 4 U C S P —
MAX9719BETE+ -40°C to +85°C 16 TQ FN - E P *—
MAX9719BEUE+ -40°C to +85°C 16 TS S O P - E P *—
M AX 9719C E BE + TG45 -40°C to +85°C 4 x 4 U C S P —
MAX9719CETE+ -40°C to +85°C 16 TQ FN - E P *—
MAX9719CEUE+ -40°C to +85°C 16 TS S O P - E P *—
M AX 9719D E BE + TG45 -40°C to +85°C 4 x 4 U C S P —
MAX9719DETE+ -40°C to +85°C 16 TQ FN - E P *—
MAX9719DEUE+ -40°C to +85°C 16 TS S O P - E P *—
Ordering Information (continued)
Chip Information
MAX9718 TRANSISTOR COUNT: 2359
MAX9719 TRANSISTOR COUNT: 4447
PROCESS: BiCMOS
UCSP Marking Information
AAA
XXX
I: A1 Bump indicator
AAA: Product code
XXX: Lot code
+
Denotes lead(Pb)-free/RoHS-compliant package.
*
EP = Exposed pad.
G45 indicates protective die coating.
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
14 ______________________________________________________________________________________
INL+
INL-
INR+
INR-
IN1+
IN1-
IN2+
IN2-
GND
SHDN
OUTL+
OUTL-
OUTR+
OUTR-
BIAS
1μF
10μF
MAX9719
VCC
INL
AUTOMATIC HEADPHONE DETECTION AND SPEAKER DISABLE CIRCUIT
C1P CIN
IN+
2.7V TO 5.5V
2.7V TO 5.5V
VCC
OUTR
2.7V TO 5.5V
SVSS
1μFMAX9722B
MAX961
OUTL
SHDN
PVSS
SVDD
PVDD
INR
1μF
1μF0.1μF1μF
0.1μF
1μF
0.1μF 0.1μF
Q
Q
220kΩ
IN-
System Diagram
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
______________________________________________________________________________________ 15
MAX9718B/E
MAX9718C/F
MAX9718D/G
2.7V TO 5.5V
SUPPLY
BIAS
GENERATOR
INVERTING
DIFFERENTIAL
INPUT
NONINVERTING
DIFFERENTIAL
INPUT
BIAS
SHDM
SHDN
(OPTIONAL)
CIN
(OPTIONAL)
CIN
IN+
IN-
VCC
GND
CBIAS
0.1μF
1.0μFR2
R2
OUT+
OUT-
R1
RF
RF
R1
SHUTDOWN
CONTROL
MAX9718A/H
2.7V TO 5.5V
SUPPLY
BIAS
GENERATOR
INVERTING
DIFFERENTIAL
INPUT
NONINVERTING
DIFFERENTIAL
INPUT
BIAS
SHDM
SHDN
(OPTIONAL)
CIN
(OPTIONAL)
CIN
IN+
IN-
VCC
GND
CBIAS
0.1μF
1.0μF
OUT+
OUT-
RIN
RIN
SHUTDOWN
CONTROL
MAX9718A
AV = 2
fC = 1Hz
CIN = 1μF
RIN = 10kΩ
RF = 20kΩ
Functional Diagrams
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
16 ______________________________________________________________________________________
MAX9719B
MAX9719C
MAX9719D
2.7V TO 5.5V
SUPPLY
BIAS
GENERATOR
INVERTING
DIFFERENTIAL
INPUT
NONINVERTING
DIFFERENTIAL
INPUT
BIAS
SHDN
(OPTIONAL)
CIN
(OPTIONAL)
CIN
INL+
INL-
VCC
GND
CBIAS
0.1μF
1.0μFR2
R2
OUTL+
OUTL-
R1
RF
RF
RF
RF
R1
INVERTING
DIFFERENTIAL
INPUT
NONINVERTING
DIFFERENTIAL
INPUT (OPTIONAL)
CIN
(OPTIONAL)
CIN
INR+
INR-
R2
R2
OUTR+
OUTR-
R1
R1
SHUTDOWN
CONTROL
MAX9719A
2.7V TO 5.5V
SUPPLY
BIAS
GENERATOR
INVERTING
DIFFERENTIAL
INPUT
NONINVERTING
DIFFERENTIAL
INPUT
BIAS
SHDN
(OPTIONAL)
CIN
(OPTIONAL)
CIN
INL+
INL-
VCC
GND
CBIAS
0.1μF
1.0μF
OUTL+
OUTL-
RIN
RIN
INVERTING
DIFFERENTIAL
INPUT
NONINVERTING
DIFFERENTIAL
INPUT (OPTIONAL)
CIN
(OPTIONAL)
CIN
INR+
INR-
OUTR+
OUTR-
SHUTDOWN
CONTROL
MAX9719A
AV = 2
fC = 1Hz
CIN = 1μF
RIN = 10kΩ
RF = 20kΩ
RIN
RIN
Functional Diagrams (continued)
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
______________________________________________________________________________________ 17
1
2
3
4
5
10
9
8
7
6
OUT+
VCC
A
123
B
CSHDN
SHDM
BIAS
OUT+
GND
OUT-
IN-
VCC
IN+
N.C.
GNDIN+
SHDM
IN-
SHDN
μMAX 3 × 3 UCSP
TOP VIEW TOP VIEW
(BUMPS ON BOTTOM)
OUT-BIAS
MAX9718
MAX9718
1
2
3
4
5
10
9
8
7
6
OUT+
VCC
N.C.
GNDIN+
SHDM
IN-
SHDN
TDFN
(3mm × 3mm × 0.8mm)
TQFN
(4mm × 4mm × 0.8mm)
TOP VIEW
OUT-BIAS
MAX9718
MAX9719
12
13
14
15
16
8
7
6
5
11 10 9
1234
OUTR+
GND
OUTL-
SHDN
VCC
OUTL+
GND
BIAS
VCC
OUTR-
INR-
GND
INR+
INL-
INL+
N.C.
TOP VIEW TOP VIEW
MAX9719
A
1234
B
C
D
GND GND
BIAS
GND
OUTL-
OUTR+
SHDN
OUTL+
OUTR-
INR+
INL-
VCC
VCC
INL+
4 × 4 UCSP
TOP VIEW
(BUMPS ON BOTTOM) MAX9719
INR-
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
OUTR- VCC
N.C.
OUTR+
GND
OUTL-
SHDN
VCC
OUTL+
TSSOP-EP
INR-
GND
INL+
INR+
INL-
BIAS
GND
Pin Configurations
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
18 ______________________________________________________________________________________
9LUCSP, 3x3.EPS
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
3 x 3 UCSP B9+1 21-0093
10 TDFN-EP T1033+1 21-0137
10 μMAX U10E+3 21-0109
4 x 4 UCSP B16+6 21-0101
16 TQFN-EP T1644+4 21-0139
16 TSSOP-EP U16E+3 21-0108
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
______________________________________________________________________________________ 19
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
20 ______________________________________________________________________________________
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
COMMON DIMENSIONS
SYMBOL MIN. MAX.
A 0.70 0.80
D2.90 3.10
E 2.90 3.10
A1 0.00 0.05
L0.20
0.40
PKG. CODE ND2 E2 eJEDEC SPEC b[(N/2)-1] x e
PACKAGE VARIATIONS
0.25 MIN.
k
A2 0.20 REF.
2.00 REF
0.25±0.05
0.50 BSC
2.30±0.10
10
T1033-1
2.40 REF
0.20±0.05- - - -
0.40 BSC
1.70±0.10 2.30±0.10
14
T1433-1
1.50±0.10 MO229 / WEED-3
0.40 BSC - - - - 0.20±0.05 2.40 REF
T1433-2 14 2.30±0.10
1.70±0.10
T633-2 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF
T833-2 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF
T833-3 81.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF
2.30±0.10 MO229 / WEED-3 2.00 REF
0.25±0.050.50 BSC1.50±0.10
10
T1033-2
0.25±0.05 2.00 REF
10 0.50 BSC MO229 / WEED-3
2.30±0.10
1.50±0.10
T1033MK-1
0.40 BSC - - - - 0.20±0.05 2.40 REFT1433-3F 14 2.30±0.101.70±0.10
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
______________________________________________________________________________________ 21
10L UMAX, EXPPADS.EPS
D
11
21-0109
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
22 ______________________________________________________________________________________
16L,UCSP.EPS
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
______________________________________________________________________________________ 23
24L QFN THIN.EPS
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
24 ______________________________________________________________________________________
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
______________________________________________________________________________________ 25
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
26 ______________________________________________________________________________________
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________
27
© 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
5 2/08 Updated Pin Configurations.17
6 3/09 Added lead-free and G45 options to Ordering Information 1, 13
7 4/10 Updated continuous power dissipation for 9-bump and 16-bump UCSP
packages and corrected error in the Pin Description section 2, 9
