MAX9718BETB [ROCHESTER]
1.4W, 1 CHANNEL, AUDIO AMPLIFIER, DSO10, 3 X 3 MM, 0.80 MM HEIGHT, MO-229, TDFN-10;
| 型号： | MAX9718BETB |
| 厂家： | 
Rochester Electronics |
| 描述： | 1.4W, 1 CHANNEL, AUDIO AMPLIFIER, DSO10, 3 X 3 MM, 0.80 MM HEIGHT, MO-229, TDFN-10 放大器 |
| 文件： | 总24页 (文件大小：1276K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-3050; Rev 1; 6/04
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
General Description
Features
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 4Ω load 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.
ꢀ 2.7V to 5.5V Single-Supply Operation
ꢀ Very High -93dB PSRR at 217Hz
ꢀ 1.4W into 4Ω at 1% THD+N (per Channel)
ꢀ Differential Input
ꢀ Internal Fixed Gain to Reduce Component Count
ꢀ Adjustable Gain Option (MAX9718A/MAX9719A)
ꢀ 100nA Low-Power Shutdown Mode
ꢀ No Audible Clicks or Pops at Power-Up/Down
ꢀ Improved Performance Pin-Compatible Upgrade
to LM4895 (MAX9718D)
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.
Ordering Information
TEMP
RANGE
PIN-
PACKAGE
GAIN
(dB)
PART
MAX9718AEBL-T -40°C to +85°C 3 x 3 UCSP
Adj
Adj
Adj
MAX9718AETB
MAX9718AEUB
-40°C to +85°C 10 TDFN-EP*
-40°C to +85°C 10 µMAX-EP*
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.
*EP = Exposed paddle.
Ordering Information continued at end of data sheet.
Pin Configurations appear at end of data sheet.
Applications
Mobile Phones
PDAs
UCSP is a trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Portable Devices
Simplified Block Diagram
SINGLE SUPPLY
2.7V TO 5.5V
SINGLE SUPPLY
2.7V TO 5.5V
OUTL+
INL+
OUT+
IN+
INL-
OUTL-
OUTR+
INR+
IN-
OUT-
SHDN
INR-
OUTR-
SHDM
MAX9718
SHDN
MAX9719
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
to GND) ..................................-0.3V to +6V
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Bump Temperature (soldering) Reflow............................+235°C
Lead Temperature (soldering, 10s) .................................+300°C
CC
Any Other Pin to GND ...............................-0.3V to (V
+ 0.3V)
CC
IN_, BIAS, SHDM, SHDN, SHDN Continuous Current ........20mA
OUT_ Short-Circuit Duration to GND or V .............Continuous
CC
Continuous Power Dissipation (T = +70°C)
A
9-Bump UCSP (derate 5.2mW/°C above +70°C)..........412mW
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) .......659mW
16-Pin TQFN (derate 16.9mW/°C above +70°C) ........1349mW
16-Pin TSSOP (derate 21.3mW/°C above +70°C) ......1702mW
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.
ELECTRICAL CHARACTERISTICS—5V Supply
(V
= 5V, GND = 0, SHDN/SHDN = V
(MAX9718/MAX9719), SHDM = GND (MAX9718), R = R = 10kΩ (MAX971_A),
CC
CC
IN
F
T
= +25°C. C
= 0.1µF, no load. Typical values are at T = +25°C, unless otherwise noted.) (Note 1)
A
BIAS A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage
V
2.7
5.5
V
CC
V
= V
= V
, T = -40°C to +85°C,
BIAS A
IN-
IN+
Supply Current
I
5.0
0.1
7.5
1
mA
µA
V
CC
per amplifier (Note 2)
Shutdown Supply Current
I
SHDN = SHDM = SHDN = GND, per amplifier
SHDN
V
0.7 x V
CC
IH
SHDN, SHDN, SHDM
Threshold
V
0.3 x V
CC
IL
V
- 5%
/2
V
/2 +
CC
5%
CC
Common-Mode Bias Voltage
Output Offset Voltage
V
(Note 3)
V
/2
V
BIAS
CC
A = 0dB, MAX971_A,
V
MAX971_B
1
10
V
V
= V
= V
BIAS
mV
OS
IN-
IN+
A = 3dB, MAX971_C
V
1
1
15
20
A = 6dB, MAX971_D
V
A = 0dB, MAX971_B
0.5
0.5
0.5
0.5
10
V
V
V
- 0.5
V
CC
CC
CC
CC
Inferred from
CMRR test
A = 3dB, MAX971_C
V
- 0.6
- 0.8
- 1.2
Common-Mode Input Voltage
V
V
IC
A = 6dB, MAX971_D
V
External gain, MAX971_A
V
Input Impedance
R
MAX971_B, MAX971_C, MAX971_D
15
-60
-60
20
kΩ
IN
-50
Common-Mode Rejection Ratio
CMRR
dB
f = 1kHz
n
V
V
= V
RIPPLE
= V
BIAS
,
IN-
IN+
f = 217Hz
f = 1kHz
-93
-90
Power-Supply Rejection Ratio
Output Power
PSRR
= 200mV
,
dB
P-P
R = 8Ω, C
= 1µF
L
BIAS
R = 8Ω
L
0.8
1.1
1.4
THD+N = 1%,
= 1kHz (Note 4)
P
W
%
OUT
f
IN
R = 4Ω
L
Total Harmonic Distortion Plus
Noise
R = 8Ω, f = 1kHz, P
V
= 0.75W,
L
IN
OUT
THD+N
0.002
= 5V, A = 6dB (Note 5)
V
CC
2
_______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
ELECTRICAL CHARACTERISTICS—5V Supply (continued)
(V
= 5V, GND = 0, SHDN/SHDN = V
(MAX9718/MAX9719), SHDM = GND (MAX9718), R = R = 10kΩ (MAX971_A),
CC
CC
IN
F
T
= +25°C. C
= 0.1µF, no load. Typical values are at T = +25°C, unless otherwise noted.) (Note 1)
A
BIAS A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Gain Accuracy
MAX971_B/MAX971_C/MAX971_D
1
%
Channel-to-Channel Gain
Matching
MAX9719B/MAX9719C/MAX9719D
1
%
Signal-to-Noise Ratio
SNR
P
= 1W, R = 8Ω
-104
+160
15
dB
°C
°C
pF
OUT
L
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
Maximum Capacitive Drive
C
Bridge-tied capacitance
500
LOAD
Power-Up/Enable from
Shutdown Time
t
10
ms
PU
Shutdown Time
Turn-Off Transient
Crosstalk
t
3.5
50
µs
mV
dB
SHDN
V
(Note 6)
POP
MAX9719, f = 1kHz
-85
IN
ELECTRICAL CHARACTERISTICS—3V Supply
(V
= 3V, GND = 0, SHDN/SHDN = V
(MAX9718/MAX9719), SHDM = GND (MAX9718), R = R = 10kΩ (MAX971_A),
CC
CC
IN
F
T
= +25°C. C
= 0.1µF, no load. Typical values are at T = +25°C, unless otherwise noted.) (Note 1)
A
BIAS A
PARAMETER
SYMBOL
CONDITIONS
= V , T = -40°C to +85°C,
IN+ BIAS
MIN
TYP
3.8
MAX
6.0
1
UNITS
mA
µA
V
= V
IN-
A
Supply Current
I
CC
per amplifier (Note 2)
Shutdown Supply Current
I
SHDN = SHDM = SHDN = GND, per amplifier
0.1
SHDN
V
0.7 x V
CC
IH
SHDN, SHDN, SHDM
Threshold
V
V
0.3 x V
CC
IL
V
- 5%
/2
V
+ 5%
/2
CC
CC
Common-Mode Bias Voltage
Output Offset Voltage
V
(Note 3)
V
/2
V
BIAS
CC
A = 0dB, MAX971_A/
V
MAX971_B
1
10
V
V
= V
= V
BIAS
mV
OS
IN-
IN+
A = 3dB, MAX971_C
V
1
1
15
20
A = 6dB, MAX971_D
V
A = 0dB, MAX971_B
0.5
0.5
0.5
0.5
10
V
V
V
V
- 0.7
V
CC
CC
CC
CC
Inferred from
CMRR test
A = 3dB, MAX971_C
V
- 0.8
- 1.0
- 1.2
Common-Mode Input Voltage
V
V
IC
A = 6dB, MAX971_D
V
External gain, MAX971_A
Input Impedance
R
IN
MAX971_B/MAX971_C/MAX971_D
15
-60
-70
20
kΩ
-50
Common-Mode Rejection Ratio
CMRR
dB
f
= 1kHz
N
V
V
= V
= V
BIAS
,
IN-
IN+
f = 217Hz
f = 1kHz
-93
-90
= 200mV
,
RIPPLE
P-P
Power-Supply Rejection Ratio
PSRR
dB
R = 8Ω,
C
L
= 1µF
BIAS
_______________________________________________________________________________________
3
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
ELECTRICAL CHARACTERISTICS—3V Supply (continued)
(V
= 3V, GND = 0, SHDN/SHDN = V
(MAX9718/MAX9719), SHDM = GND (MAX9718), R = R = 10kΩ (MAX971_A),
CC
CC
IN
F
T
= +25°C. C
= 0.1µF, no load. Typical values are at T = +25°C, unless otherwise noted.) (Note 1)
A
BIAS A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Output Power
P
R = 8Ω, THD+N = 1%, f = 1kHz (Note 4)
475
mW
OUT
L
IN
Total Harmonic Distortion Plus
Noise
R = 8Ω, f = 1kHz, P
A = 6dB
V
= 0.25W,
L
IN
OUT
THD+N
0.003
%
Thermal-Shutdown Threshold
Thermal-Shutdown Hysteresis
Maximum Capacitive Drive
+160
15
°C
°C
pF
C
Bridge-tied capacitance
500
LOAD
Power-Up/Enable from
Shutdown Time
t
10
ms
PU
Shutdown Time
Turn-Off Transient
Crosstalk
t
3
µs
mV
dB
SHDN
V
(Note 6)
40
-85
POP
MAX9719, f = 1kHz
N
Note 1: All specifications are 100% tested at T = +25°C. Specifications over temperature (T = T
to T
) are guaranteed by
MAX
A
A
MIN
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 V /2.
CC
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. V
rise and fall times greater than or equal to 1ms.
CC
Typical Operating Characteristics
(V
= 5V, C
= 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, T = +25°C, unless otherwise noted.)
BIAS
A
CC
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
10
1
10
1
10
V
= 5V
V
= 5V
CC
L
V
= 5V
CC
CC
R = 4Ω
R = 8Ω
R = 4Ω
L
L
A
= 4
A = 2
V
A
= 2
V
V
1
0.1
OUTPUT POWER = 1W
0.1
0.1
OUTPUT POWER = 1W
OUTPUT POWER = 750mW
OUTPUT POWER = 250mW
0.01
0.001
0.0001
0.01
0.001
0.0001
0.01
0.001
OUTPUT POWER = 200mW
OUTPUT POWER = 50mW
0.0001
10
100
1k
10k
100k
10
100
1k
10k
100k
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
4
_______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Typical Operating Characteristics (continued)
(V
= 5V, C
= 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, T = +25°C, unless otherwise noted.)
BIAS
CC
A
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
10
1
10
1
10
V
= 3V
V
= 3V
V
= 5V
CC
CC
CC
R = 4Ω
R = 4Ω
R = 8Ω
L
L
L
A
= 4
A
= 2
A
= 4
V
V
V
1
0.1
OUTPUT POWER = 175mW
OUTPUT POWER = 70mW
0.1
0.1
OUTPUT POWER = 800mW
OUTPUT POWER = 200mW
OUTPUT POWER = 50mW
OUTPUT POWER = 250mW
0.01
0.001
0.0001
0.01
0.001
0.0001
0.01
0.001
0.0001
10
100
1k
10k
100k
10
100
1k
10k
100k
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
TOTAL HARMONIC DISTORTION + NOISE
vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION + NOISE
vs. FREQUENCY
10
1
100
10
10
1
V
= 3V
V
= 5V
CC
L
V
= 3V
CC
CC
R = 8Ω
R = 4Ω
R = 8Ω
L
L
A
= 4
A = 2
V
A
= 2
V
V
0.1
1
0.1
OUTPUT POWER = 50mW
OUTPUT POWER = 200mW
f
= 10kHz
OUTPUT POWER = 100mW
OUTPUT POWER = 250mW
IN
f = 100Hz
IN
0.01
0.001
0.0001
0.1
0.01
0.001
0.0001
0.01
0.001
f
= 1kHz
IN
10
100
1k
10k
100k
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
OUTPUT POWER (W)
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION + NOISE
vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION + NOISE
vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION + NOISE
vs. OUTPUT POWER
100
10
100
10
100
10
V
= 5V
V
= 5V
V
= 5V
CC
L
CC
CC
R = 8Ω
R = 4Ω
R = 8Ω
L
L
A
= 4
A
= 4
A = 2
V
V
V
1
1
1
f
= 100Hz
f
= 1kHz
IN
IN
f
= 100Hz
IN
f
= 10kHz
f
= 1kHz
IN
0.1
0.1
0.1
IN
f
= 100Hz
IN
f
= 10kHz
f
= 10kHz
IN
IN
0.01
0.001
0.01
0.001
0.01
0.001
f
= 1kHz
IN
0
0.2 0.4 0.6 0.8 1.0
OUTPUT POWER (W)
1.2 1.4
0
0.5
1.0
OUTPUT POWER (W)
1.5
2.0
0
0.2 0.4 0.6 0.8 1.0
OUTPUT POWER (W)
1.2 1.4
_______________________________________________________________________________________
5
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Typical Operating Characteristics (continued)
(V
= 5V, C
= 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, T = +25°C, unless otherwise noted.)
BIAS
A
CC
TOTAL HARMONIC DISTORTION + NOISE
vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION + NOISE
vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION + NOISE
vs. OUTPUT POWER
100
100
10
100
10
V
= 3V
V
= 3V
V
= 3V
CC
CC
CC
R = 4Ω
R = 4Ω
R = 8Ω
L
L
L
A
= 2
A
= 4
A
= 2
V
V
V
10
1
f
= 10kHz
IN
1
1
f
= 10kHz
IN
0.1
0.1
0.1
f
= 10kHz
IN
f
= 1kHz
IN
f
= 1kHz
200
f
= 1kHz
200
IN
IN
f
= 100Hz
IN
0.01
0.001
0.01
0.001
0.01
0.001
f
= 100Hz
500
f
= 100Hz
500
IN
IN
0
100
300
400
500
600
0
100
200
300
400
600
0
100
300
400
600
OUTPUT POWER (mW)
OUTPUT POWER (mW)
OUTPUT POWER (mW)
TOTAL HARMONIC DISTORTION + NOISE
vs. COMMON-MODE VOLTAGE
TOTAL HARMONIC DISTORTION + NOISE
vs. COMMON-MODE VOLTAGE
TOTAL HARMONIC DISTORTION + NOISE
vs. OUTPUT POWER
0.01
0.001
0.01
0.001
100
10
V
P
A
= 5V
V
P
A
= 3V
= 200mW
= 2
V
= 3V
CC
CC
O
V
CC
= 200mW
R = 8Ω
O
V
L
= 2
A
= 4
V
1
f
= 1kHz
IN
0.1
f
= 10kHz
IN
0.01
0.001
f
= 100Hz
400
IN
0.0001
0.0001
0
0.5
1.0
1.5
2.0
2.5
3.0
0
1
2
3
4
5
0
100
200
300
500
COMMON-MODE VOLTAGE (V)
COMMON-MODE VOLTAGE (V)
OUTPUT POWER (mW)
OUTPUT POWER
vs. LOAD RESISTANCE
OUTPUT POWER
vs. SUPPLY VOLTAGE
OUTPUT POWER
vs. SUPPLY VOLTAGE
2.5
2.0
1.5
1.0
0.5
0
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
R = 4Ω
V
= 5V
CC
L
R = 8Ω
L
f = 1kHz
f = 1kHz
f = 1kHz
A
= 2
A = 2
V
A
= 2
V
V
THD+N = 10%
THD+N = 10%
THD+N = 10%
THD+N = 1%
THD+N = 1%
THD+N = 1%
2.5
3.0
3.5
4.0
4.5
5.0
5.5
1
10
100
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
LOAD RESISTANCE (Ω)
SUPPLY VOLTAGE (V)
6
_______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Typical Operating Characteristics (continued)
(V
= 5V, C
= 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, T = +25°C, unless otherwise noted.)
BIAS
CC
A
OUTPUT POWER
vs. LOAD RESISTANCE
POWER DISSIPATION
vs. OUTPUT POWER
POWER DISSIPATION
vs. OUTPUT POWER
1.0
0.8
0.6
0.4
0.2
0
600
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
V
= 5V
V
= 5V
V
= 3V
CC
R = 4Ω
L
CC
R = 8Ω
L
CC
f = 1kHz
A = 2
500
400
300
200
100
0
f = 1kHz
A
f = 1kHz
A
V
= 2
= 2
V
V
THD+N = 10%
THD+N = 1%
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4
OUTPUT POWER (W)
1
10
100
0
0.3
0.6
0.9
1.2
1.5
1.8
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)
GAIN AND PHASE
vs. FREQUENCY
POWER DISSIPATION
vs. OUTPUT POWER
POWER DISSIPATION
vs. OUTPUT POWER
150
120
90
700
600
500
400
300
200
100
0
350
300
250
200
150
100
50
A = 60dB
V
V
= 3V
V
= 3V
CC
R = 4Ω
L
CC
R = 8Ω
L
f = 1kHz
A
f = 1kHz
A
= 2
= 2
V
V
60
30
0
-30
-60
-90
-120
-150
0
10
100
1k
10k
100k
0
100 200 300 400 500 600 700
OUTPUT POWER (mW)
0
100
200
300
400
500
FREQUENCY (Hz)
OUTPUT POWER (mW)
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
V
= 200mV
P-P
V
= 200mV
P-P
RIPPLE
RIPPLE
-10
-20
-30
-40
-50
-60
-70
-80
-90
R = 8Ω
R = 8Ω
L
L
C
= 1µF
C
= 1µF
BIAS
BIAS
V
V
= 5V
CC
CC
V
= 5V
CC
= 3V
V
= 3V
CC
-100
10
100
1k
FREQUENCY (Hz)
10k
100k
10
100
1k
FREQUENCY (Hz)
10k
100k
_______________________________________________________________________________________
7
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Typical Operating Characteristics (continued)
(V
= 5V, C
= 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, T = +25°C, unless otherwise noted.)
BIAS
A
CC
CROSSTALK
vs. FREQUENCY
CROSSTALK
vs. FREQUENCY
0
0
V
V
= 3V
V
V
= 5V
CC
RIPPLE
L
CC
RIPPLE
L
-10
-10
= 200mV
= 200mV
P-P
P-P
-20
-30
-40
-50
-20
-30
-40
-50
R = 8Ω
R = 8Ω,
C
= 1µF
C
= 1µF
BIAS
BIAS
-60
-70
-60
-70
CHANNEL 2
CHANNEL 2
-80
-80
-90
-90
-100
-110
-120
CHANNEL 1
-100
-110
-120
CHANNEL 1
10
100
1k
10k
100k
10
100
1k
10k
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
ENTERING SHUTDOWN
EXITING SHUTDOWN
MAX9718 toc32
MAX9718 toc33
C
CC
R = 8Ω
L
= 0.1µF
BIAS
= 3V
V
SHDN
2V/div
C
CC
R = 8Ω
L
= 0.1µF
BIAS
= 3V
V
SHDN
2V/div
OUT+
1V/div
OUT+
1V/div
OUT-
1V/div
OUT-
1V/div
OUT+ - OUT-
200mV/div
OUT+ - OUT-
200mV/div
100µs/div
4ms/div
EXITING POWER-DOWN
ENTERING POWER-DOWN
MAX9718 toc35
MAX9718 toc34
C
CC
R = 8Ω
L
= 0.1µF
BIAS
= 3V
V
SHDN
2V/div
SHDN
1V/div
OUT+
1V/div
OUT+
1V/div
OUT-
1V/div
OUT-
1V/div
OUT+ - OUT-
200mV/div
C
CC
R = 8Ω
L
= 0.1µF
BIAS
= 3V
OUT+ - OUT-
200mV/div
V
4ms/div
100µs/div
8
_______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Typical Operating Characteristics (continued)
(V
= 5V, C
= 0.1µF, THD+N measurement bandwidth = 22Hz to 22kHz, T = +25°C, unless otherwise noted.)
BIAS
CC
A
SHUTDOWN CURRENT
vs. TEMPERATURE
TURN-ON TIME
vs. DC BIAS BYPASS CAPACITOR
SUPPLY CURRENT
vs. TEMPERATURE
0.03
0.02
0.01
0
6
80
70
60
50
40
30
20
10
0
TO -3dB OF FINAL VALUE
V
V
= 5V
= 3V
5
4
3
2
1
0
CC
CC
V
= 5V
CC
V
= 5V
CC
V
= 3V
0.80
CC
V
= 3V
CC
-0.01
-0.02
-0.03
-40
-15
10
35
60
85
-40
-15
10
35
60
85
0
0.20
0.40
0.60
(µF)
1.00
TEMPERATURE (°C)
TEMPERATURE (°C)
C
BIAS
Pin Description
PIN
MAX9718
MAX9719
UCSP
NAME
FUNCTION
TDFN/
µMAX
UCSP
TQFN
TSSOP
Shutdown Input. The polarity of SHDN is dependent on the state
of SHDM.
1
C2
—
—
—
SHDN
—
—
9
B3
11
SHDN
Shutdown Input. Active-low shutdown input.
Inverting Input
2
C1
—
—
—
IN-
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).
3
B2
—
—
—
SHDM
4
5
6
A1
A2
A3
—
5
—
B2
—
—
7
IN+
BIAS
OUT-
Noninverting Input
DC Bias Bypass
—
—
Bridge Amplifier Negative Output
A2,
C2, C4
7
B3
1, 6, 11
3, 8,13
GND
Ground
8
—
B1
C3
—
—
—
—
—
13
8, 14
—
2
—
A4, D3
—
15
N.C.
No Connection. Not internally connected.
Power Supply
9
16, 10
V
CC
10
—
—
—
—
—
—
4
OUT+
INR+
INL-
Bridge Amplifier Positive Output
Right-Channel Noninverting Input
Left-Channel Inverting Input
Left-Channel Noninverting Input
C1
3
B1
5
4
A1
6
INL+
7
A3
9
OUTL+ Left-Channel Bridge Amplifier Positive Output
OUTL- Left-Channel Bridge Amplifier Negative Output
10
B4
12
_______________________________________________________________________________________
9
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Pin Description (continued)
PIN
MAX9718
MAX9719
UCSP
NAME
FUNCTION
TDFN/
UCSP
TQFN
TSSOP
µMAX
—
—
—
EP
—
—
—
—
12
15
16
EP
D4
D2
D1
—
14
1
OUTR+ Right-Channel Bridge Amplifier Positive Output
OUTR-
INR-
EP
Right-Channel Bridge Amplifier Negative Output
Right-Channel Inverting Input
2
EP
Exposed Pad. Connect EP to GND.
Detailed Description
Table 1. Shutdown Mode Selection
(MAX9718 Only)
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
industry-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 con-
figured as BTL amplifiers (see the Functional Diagrams).
Both adjustable and fixed gain (0dB, 3dB, 6dB) versions
are available.
SHDM
SHDN
OPERATIONAL MODE
Shutdown
0
0
1
1
0
1
0
1
Normal operation
Normal operation
Shutdown
Applications Information
BTL Amplifier
BIAS
These devices operate from a single 2.7V to 5.5V sup-
ply and feature an internally generated, common-mode
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.
bias voltage of V / 2 referenced to ground. BIAS pro-
CC
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.
Substituting 2 x V
for V
into the following
OUT(P-P)
OUT(P-P)
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.
equations yields four times the output power due to
doubling of the output voltage:
V
OUT(P−P)
V
=
RMS
2 2
2
V
RMS
P
=
OUT
R
L
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.
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 100kΩ between both
outputs. This scheme minimizes the energy present in
the audio band.
10 ______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
R
F
R
F
V
+1
OUT(P-P)
2 x V
V
OUT(P-P)
MAX9718A
MAX9719A
R
INVERTING
DIFFERENTIAL
INPUT
IN
IN-
IN+
-1
OUT(P-P)
(OPTIONAL)
(OPTIONAL)
OUT+
OUT-
BIAS
GENERATOR
Figure 1. Bridge-Tied Load Configuration
R
IN
NONINVERTING
DIFFERENTIAL
INPUT
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:
Figure 2. Setting the MAX9718A/MAX9719A Gain
by 15°C. A pulsing output under continuous thermal
T
− T
A
J(MAX)
P
=
D(MAX)
overload results as the device heats and cools.
θ
JA
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.
where T
is +150°C, T is the ambient tempera-
A
J(MAX)
ture, and θ is the reciprocal of the derating factor in
JA
°C/W as specified in the Absolute Maximum Ratings
section. For example, θ of the TQFN package is
JA
Fixed Differential Gain
The MAX9718B, MAX9718C, MAX9718D, MAX9719B,
MAX9719C, and MAX9719D feature internally fixed
gains (see the Selector Guide). This simplifies design,
decreases required footprint size, and eliminates exter-
nal gain-setting resistors. Resistors R1 and R2 shown in
the Typical Operating Circuit are used to achieve each
fixed gain.
+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 V
and load is given by the following equation:
CC
2
2V
CC
P
=
D(MAX)
Adjustable Differential Gain
Gain-Setting Resistors
External feedback resistors set the gain of the
2
π R
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
MAX9718A and MAX9719A. Resistors R and R
F
(Figure 2) set the gain of the amplifier as follows:
IN
R
F
A
=
V
R
IN
reduce V , increase load impedance, decrease ambi-
CC
ent temperature, reduce gain, or reduce input signal.
where A is the desired voltage gain. Hence, an R of
V
IN
10kΩ and an R of 20kΩ yields a gain of 2V/V, or 6dB.
F
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
R can be either fixed or variable, allowing the use of a
F
digitally controlled potentiometer to alter the gain under
software control.
______________________________________________________________________________________ 11
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
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.
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.
If input capacitors are used, input capacitor C , in
IN
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.
conjunction with R , forms a highpass filter that
IN
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:
UCSP Applications Information
1
f −3dB
=
For the latest application details on UCSP construction,
dimensions, tape carrier information, PC board tech-
niques, bump-pad layout, and recommended reflow
temperature profile, as well as the latest information on
reliability testing results, refer to the Application Note:
UCSP—A Wafer-Level Chip-Scale Package available
on Maxim’s website at www.maxim-ic.com/ucsp.
2πR C
IN IN
Setting f
too high affects the low-frequency
-3dB
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 V /2
CC
BIAS
bias voltage. The BIAS bypass capacitor, C
,
Selector Guide
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
SELECTABLE
GAIN
SHUTDOWN
POLARITY
PART
MONO STEREO
(dB)
C
(up to 1µF) improve PSRR, but slow down
BIAS
MAX9718A
MAX9718B
MAX9718C
MAX9718D
MAX9719A
MAX9719B
MAX9719C
MAX9719D
√
√
—
—
—
—
√
Adjustable
√
√
t
/t
times. A 1µF C
capacitor slows turn-on
BIAS
ON OFF
0
and turn-off times by 10 and improves PSRR by 20dB
(at 1kHz). Do not connect external loads to BIAS.
√
3
√
√
6
√
Supply Bypassing
Proper power-supply bypassing ensures low-noise,
low-distortion performance. Connect a 1µF ceramic
—
—
—
—
Adjustable
—
—
—
—
√
0
3
6
capacitor from V
to GND. Add additional bulk
CC
√
capacitance as required by the application. Locate the
bypass capacitor as close to the device as possible.
√
12 ______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
UCSP Marking Information:
Ordering Information (continued)
TEMP
RANGE
PIN-
PACKAGE
GAIN
(dB)
PART
AAA
XXX
MAX9718BEBL-T -40°C to +85°C 3 x 3 UCSP
0
0
MAX9718BETB
MAX9718BEUB
-40°C to +85°C 10 TDFN-EP*
-40°C to +85°C 10 µMAX-EP*
ꢁ: A1 Bump indicator
0
AAA: Product code
XXX: Lot code
MAX9718CEBL-T -40°C to +85°C 3 x 3 UCSP
3
MAX9718CETB
MAX9718CEUB
-40°C to +85°C 10 TDFN-EP*
-40°C to +85°C 10 µMAX-EP*
3
3
MAX9718DEBL-T -40°C to +85°C 3 x 3 UCSP
6
MAX9718DETB
MAX9718DEUB
-40°C to +85°C 10 TDFN-EP*
-40°C to +85°C 10 µMAX-EP*
6
Chip Information
6
MAX9718 TRANSISTOR COUNT: 2359
MAX9719 TRANSISTOR COUNT: 4447
PROCESS: BiCMOS
MAX9719AEBE-T -40°C to +85°C 4 x 4 UCSP
Adj
Adj
Adj
0
MAX9719AETE
MAX9719AEAE
-40°C to +85°C 16 TQFN-EP*
-40°C to +85°C 16 TSSOP-EP*
MAX9719BEBE-T -40°C to +85°C 4 x 4 UCSP
MAX9719BETE
MAX9719BEAE
-40°C to +85°C 16 TQFN-EP*
-40°C to +85°C 16 TSSOP-EP*
0
0
MAX9719CEBE-T -40°C to +85°C 4 x 4 UCSP
3
MAX9719CETE
MAX9719CEAE
-40°C to +85°C 16 TQFN-EP*
-40°C to +85°C 16 TSSOP-EP*
3
3
MAX9719DEBE-T -40°C to +85°C 4 x 4 UCSP
6
MAX9719DETE
MAX9719DEAE
-40°C to +85°C 16 TQFN-EP*
-40°C to +85°C 16 TSSOP-EP*
6
6
*EP = Exposed paddle.
______________________________________________________________________________________ 13
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
System Diagram
2.7V TO 5.5V
10µF
1µF
V
CC
MAX9719
OUTL+
OUTL-
IN1+
INL+
INL-
INR+
INR-
IN1-
IN2+
IN2-
OUTR+
OUTR-
BIAS
GND
SHDN
0.1µF
2.7V TO 5.5V
IN-
Q
Q
220kΩ
MAX961
V
CC
IN+
0.1µF
0.1µF
SHDN
MAX9722B
1µF
1µF
INL
INR
OUTL
OUTR
2.7V TO 5.5V
PV
PV
SV
DD
DD
SS
SV
SS
C1P
CIN
1µF
0.1µF
1µF
1µF
AUTOMATIC HEADPHONE DETECTION AND SPEAKER DISABLE CIRCUIT
14 ______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Functional Diagrams
2.7V TO 5.5V
SUPPLY
V
CC
1.0µF
R
2
C
IN
INVERTING
DIFFERENTIAL
INPUT
R
R
1
IN-
OUT+
OUT-
(OPTIONAL)
C
IN
NONINVERTING
DIFFERENTIAL
INPUT
1
IN+
R
2
(OPTIONAL)
BIAS
BIAS
GENERATOR
C
BIAS
0.1µF
SHDN
SHDM
MAX9718B
MAX9718C
MAX9718D
SHUTDOWN
CONTROL
GND
R
F
R
F
2.7V TO 5.5V
SUPPLY
V
CC
1.0µF
C
IN
INVERTING
DIFFERENTIAL
INPUT
R
R
IN
IN-
OUT+
OUT-
(OPTIONAL)
C
IN
NONINVERTING
DIFFERENTIAL
INPUT
IN
IN+
(OPTIONAL)
BIAS
BIAS
GENERATOR
C
BIAS
0.1µF
MAX9718A
SHDN
SHDM
MAX9718A
SHUTDOWN
CONTROL
A = 2
C
V
f
= 1Hz
C
IN
= 1µF
IN
GND
R
= 10kΩ
R = 20kΩ
F
______________________________________________________________________________________ 15
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Functional Diagrams (continued)
2.7V TO 5.5V
SUPPLY
V
MAX9719B
MAX9719C
MAX9719D
CC
1.0µF
R
2
C
IN
INVERTING
DIFFERENTIAL
INPUT
R
1
INL-
OUTL+
OUTL-
(OPTIONAL)
C
IN
R
NONINVERTING
DIFFERENTIAL
INPUT
1
INL+
BIAS
R
R
2
2
(OPTIONAL)
BIAS
GENERATOR
C
BIAS
0.1µF
SHDN
INR-
SHUTDOWN
CONTROL
C
IN
INVERTING
DIFFERENTIAL
INPUT
R
1
OUTR+
OUTR-
(OPTIONAL)
C
IN
R
NONINVERTING
DIFFERENTIAL
INPUT
1
INR+
GND
R
2
(OPTIONAL)
R
F
R
F
2.7V TO 5.5V
SUPPLY
V
CC
1.0µF
MAX9719A
C
IN
INVERTING
DIFFERENTIAL
INPUT
R
R
IN
IN
INL-
INL+
OUTL+
OUTL-
(OPTIONAL)
C
IN
NONINVERTING
DIFFERENTIAL
INPUT
(OPTIONAL)
BIAS
BIAS
GENERATOR
C
BIAS
0.1µF
SHDN
SHUTDOWN
CONTROL
C
IN
R
R
INVERTING
DIFFERENTIAL
INPUT
IN
IN
INR-
OUTR+
OUTR-
(OPTIONAL)
C
IN
NONINVERTING
DIFFERENTIAL
INPUT
INR+
GND
MAX9719A
A
= 2
V
(OPTIONAL)
f
C
= 1Hz
C
IN
= 1µF
IN
R
F
R
= 10kΩ
R = 20kΩ
F
R
F
16 ______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Pin Configurations
TOP VIEW
TOP VIEW
(BUMPS ON BOTTOM)
1
MAX9718
2
3
A
B
C
IN+
BIAS
OUT-
GND
SHDN
IN-
1
2
3
4
5
10 OUT+
9
8
7
6
V
CC
V
SHDM
SHDN
SHDM
IN+
N.C.
GND
OUT-
CC
MAX9718
IN-
OUT+
BIAS
µMAX
3 × 3 UCSP
TOP VIEW
TOP VIEW
(BUMPS ON BOTTOM)
1
MAX9719
2
3
4
V
SHDN
IN-
1
2
3
4
5
10 OUT+
A
B
C
D
INL+
INL-
INR+
INR-
GND
OUTL+
CC
9
8
7
6
V
CC
SHDM
IN+
N.C.
GND
OUT-
BIAS
GND
SHDN
OUTL-
GND
MAX9718
BIAS
3mm × 3mm × 0.8mm TDFN
V
OUTR+
OUTR-
CC
4 × 4 UCSP
TOP VIEW
TOP VIEW
16
15
14
13
OUTR-
1
2
3
4
5
6
7
8
16 V
CC
INR-
GND
15 N.C.
GND
OUTR+
GND
1
2
3
4
12
11
10
9
14 OUTR+
13 GND
INR+
INL-
INL+
INR+
INL-
INL+
BIAS
GND
MAX9719
MAX9719
12 OUTL-
11 SHDN
OUTL-
SHDN
10 V
CC
9
OUTL+
5
6
7
8
TSSOP-EP
4mm × 4mm × 0.8mm TQFN
______________________________________________________________________________________ 17
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE, 3x3 UCSP
1
21-0093
I
1
18 ______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
D
N
PIN 1
INDEX
AREA
E
E2
DETAIL A
C
C
L
L
L
L
A
e
e
PACKAGE OUTLINE, 6, 8, 10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
1
NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY
21-0137
F
2
COMMON DIMENSIONS
SYMBOL
MIN.
0.70
2.90
2.90
0.00
0.20
MAX.
0.80
3.10
3.10
0.05
0.40
A
D
E
A1
L
k
0.25 MIN.
0.20 REF.
A2
PACKAGE VARIATIONS
PKG. CODE
T633-1
N
6
D2
E2
e
JEDEC SPEC
b
[(N/2)-1] x e
1.50 0.10 2.30 0.10 0.95 BSC
1.50 0.10 2.30 0.10 0.65 BSC
MO229 / WEEA
MO229 / WEEC
0.40 0.05
0.30 0.05
1.90 REF
1.95 REF
2.00 REF
2.40 REF
2.40 REF
T833-1
8
T1033-1
T1433-1
T1433-2
10
14
14
1.50 0.10 2.30 0.10 0.50 BSC MO229 / WEED-3 0.25 0.05
1.70 0.10 2.30 0.10 0.40 BSC
1.70 0.10 2.30 0.10 0.40 BSC
- - - -
- - - -
0.20 0.03
0.20 0.03
PACKAGE OUTLINE, 6, 8, 10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
2
21-0137
F
2
______________________________________________________________________________________ 19
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
20 ______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE, 4x4 UCSP
1
21-0101
H
1
______________________________________________________________________________________ 21
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE
12, 16, 20, 24L THIN QFN, 4x4x0.8mm
1
C
21-0139
2
PACKAGE OUTLINE
12, 16, 20, 24L THIN QFN, 4x4x0.8mm
2
C
21-0139
2
22 ______________________________________________________________________________________
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE, TSSOP, 4.40 MM BODY
EXPOSED PAD
1
21-0108
D
1
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 ____________________ 23
© 2004 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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