Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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
(V
DD
= 15V, AGND = PGND = 0V,
SHDN
≥ V
IH
, A
V
= 16dB, C
SS
= C
IN
= 0.47μF, C
REG
= 0.01μF, C1 = 100nF, C2 = 1μF, FS1 = FS2
= PGND (f
S
= 660kHz), R
L
connected between OUTL+ and OUTL- and OUTR+ and OUTR-, T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Notes 1, 2)
PARAMETER
GENERAL
Supply Voltage Range
Quiescent Current
Shutdown Current
Turn-On Time
Amplifier Output Resistance in
Shutdown
Input Impedance
R
IN
V
DD
I
DD
I
SHDN
t
ON
C
SS
= 470nF
C
SS
= 180nF
SHDN
= PGND
A
V
= 13dB
A
V
= 16dB
A
V
= 19.1dB
A
V
= 29.6dB
Voltage Gain
Gain Matching
Output Offset Voltage
Common-Mode Rejection Ratio
Power-Supply Rejection Ratio
(Note 3)
CMRR
PSRR
V
OS
A
V
G1 = L, G2 = L
G1 = L, G2 = H
G1 = H, G2 = L
G1 = H, G2 = H
Between channels (MAX9704)
f
IN
= 1kHz, input referred
V
DD
= 10V to 25V
200mV
P-P
ripple
f
RIPPLE
= 1kHz
f
RIPPLE
= 20kHz
150
35
30
23
10
29.4
18.9
12.8
15.9
Inferred from PSRR test
R
L
= OPEN
MAX9703
MAX9704
10
14
24
0.2
100
50
330
58
48
39
15
29.6
19.1
13
16
0.5
±6
60
54
80
80
66
dB
±30
80
65
55
22
29.8
19.3
13.2
16.3
%
mV
dB
dB
kΩ
25
22
34
1.5
V
mA
µA
ms
kΩ
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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Maxim Integrated
│
2
MAX9703/MAX9704
10W Stereo/15W Mono, Filterless,
Spread-Spectrum, Class D Amplifiers
Electrical Characteristics (continued)
(V
DD
= 15V, AGND = PGND = 0V,
SHDN
≥ V
IH
, A
V
= 16dB, C
SS
= C
IN
= 0.47μF, C
REG
= 0.01μF, C1 = 100nF, C2 = 1μF, FS1 = FS2
= PGND (f
S
= 660kHz), R
L
connected between OUTL+ and OUTL- and OUTR+ and OUTR-, T
A
= T
MIN
to T
MAX
, unless otherwise
noted. Typical values are at T
A
= +25°C.) (Notes 1, 2)
PARAMETER
Continuous Output Power
(MAX9703)
SYMBOL
CONDITIONS
THD+N = 10%, V
DD
= 16V, f = 1kHz, T
A
=
+25°C, t
CONT
= 15min
(Note 4)
THD+N = 10%, V
DD
= 16V, f = 1kHz, T
A
=
+25°C, t
CONT
= 15min
(Note 4)
R
L
= 4Ω
R
L
= 8Ω
R
L
= 16Ω, V
DD
= 24V
R
L
= 4Ω
R
L
= 8Ω
R
L
= 16Ω, V
DD
= 24V
MIN
TYP
10
15
18
2x5
2x10
2x16
0.07
94
88
97
91
65
560
670
940
470
670
±7%
78
88
6
2.5
0.8
±1
%
V
kHz
800
dB
dB
%
W
W
MAX
UNITS
P
CONT
Continuous Output Power
(MAX9704)
Total Harmonic Distortion Plus
Noise
P
CONT
THD+N
f
IN
= 1kHz, either FFM or SSM, R
L
= 8Ω,
P
OUT
= 4W
R
L
= 8Ω, P
OUT
=
10W, f = 1kHz
BW = 22Hz to
22kHz
A-weighted
FFM
SSM
FFM
SSM
Signal-to-Noise Ratio
SNR
Crosstalk
Left to right, right to left, 8Ω load, f
IN
= 10kHz
FS1 = L, FS2 = L
FS1 = L, FS2 = H
Oscillator Frequency
f
OSC
FS1 = H, FS2 = L
FS1 = H, FS2 = H (spread-spectrum mode)
Efficiency
Regulator Output
DIGITAL INPUTS (SHDN, FS_, G_)
Input Thresholds
Input Leakage Current
η
V
REG
V
IH
V
IL
P
OUT
= 15W, f = 1kHz, R
L
= 8Ω
P
OUT
= 10W, f = 1kHz, R
L
= 16Ω
V
µA
Note 1:
All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 2:
Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For R
L
= 8Ω, L = 68μH.
For R
L
= 4Ω, L = 33μH.
Note 3:
PSRR is specified with the amplifier inputs connected to AGND through C
IN
.
Note 4:
The MAX9704 continuous 8Ω and 16Ω power measurements account for thermal limitations of the 32-pin TQFN-EP pack-
age. Continuous 4Ω power measurements account for short-circuit protection of the MAX9703/MAX9704 devices.
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Maxim Integrated
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3
MAX9703/MAX9704
10W Stereo/15W Mono, Filterless,
Spread-Spectrum, Class D Amplifiers
Typical Operating Characteristics
(33μH with 4Ω, 68μH with 8Ω, part in SSM mode, 136μH with 16Ω, measurement BW = 22Hz to 22kHz, unless otherwise noted.)
MAX9703/04 toc01
MAX9703/04 toc02
V
DD
= 15V
R
L
= 4Ω
A
V
= 16dB
V
DD
= 15V
R
L
= 8Ω
A
V
= 16dB
V
DD
= 20V
R
L
= 8Ω
A
V
= 16dB
THD+N (%)
THD+N (%)
THD+N (%)
1
P
OUT
= 4W
0.1
1
P
OUT
= 8W
0.1
1
P
OUT
= 8W
0.1
P
OUT
= 500mW
10k
100k
0.01
10
100
1k
FREQUENCY (Hz)
10k
100k
P
OUT
= 500mW
0.01
10
100
1k
FREQUENCY (Hz)
10k
100k
0.01
10
100
P
OUT
= 500mW
1k
FREQUENCY (Hz)
V
DD
= 20V
R
L
= 8Ω
A
V
= 16dB
P
OUT
= 8W
SSM
MAX9703/04 toc04
MAX9703/04 toc05
10
THD+N (%)
V
DD
= 15V
R
L
= 4Ω
A
V
= 16dB
V
DD
= 15V
R
L
= 8Ω
A
V
= 16dB
f = 10kHz
f = 1kHz
THD+N (%)
1
1
f = 10kHz
1
THD+N (%)
0.1
FFM
0.01
0.1
f = 100Hz
10
100
1k
FREQUENCY (Hz)
10k
100k
0.01
0
1
2
3
4
5
6
7
8
9
10
f = 1kHz
0.1
f = 100Hz
0.01
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
OUTPUT POWER (W)
OUTPUT POWER (W)
MAX9703/04 toc07
10
THD+N (%)
V
DD
= 20V
R
L
= 8Ω
A
V
= 16dB
f = 10kHz
EFFICIENCY (%)
1
THD+N (%)
1
V
DD
= 20V
R
L
= 8Ω
A
V
= 16dB
f = 1kHz
SSM
MAX9703/04 toc08
90
80
70
60
50
40
30
20
10
0
R
L
= 8Ω
f = 1kHz
R
L
= 4Ω
0.1
0.1
f = 100Hz
0.01
0
2
4
6
8
10 12 14 16 18
20
0.01
FFM (335kHz)
V
DD
= 12V
A
V
= 16dB
f = 1kHz
0
1
2
3
4
5
6
7
8
9
10
OUTPUT POWER (W)
OUTPUT POWER (W)
0 1 2 3 4 5 6 7 8 9 10111213141516171819 20
OUTPUT POWER (W)
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Maxim Integrated
│
4
MAX9703/04 toc09
100
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
10
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
100
EFFICIENCY vs. OUTPUT POWER
MAX9703/04 toc06
10
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
100
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
10
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
MAX9703/04 toc03
10
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
10
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
10
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX9703/MAX9704
10W Stereo/15W Mono, Filterless,
Spread-Spectrum, Class D Amplifiers
Typical Operating Characteristics (continued)
(33μH with 4Ω, 68μH with 8Ω, part in SSM mode, 136μH with 16Ω, measurement BW = 22Hz to 22kHz, unless otherwise noted.)
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