MAX9768 Maxim Integrated Products, MAX9768 Datasheet - Page 7

• Manufacturer Part Number: MAX9768
• Description: 10W Mono Class D Speaker Amplifier
• Manufacturer: Maxim Integrated Products

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(PV
OUT+ and OUT-, R
spread-spectrum modulation mode.)
0.001
0.001
0.001
0.01
0.01
0.01
100
100
0.1
0.1
0.1
DD
10
10
10
1
1
1
10
0
0
= 12V, V
OUTPUT POWER = 800mW
PV
R
PWM MODE
PV
R
PWM MODE
OUTPUT POWER = 300mW
PV
R
FILTERLESS MODULATION
L
L
L
DD
f
DD
PLUS NOISE vs. OUTPUT POWER
PLUS NOISE vs. OUTPUT POWER
= 8Ω
= 8Ω
DD
IN
TOTAL HARMONIC DISTORTION
= 8Ω
f
TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
IN
PLUS NOISE vs. FREQUENCY
= 5V
= 100Hz
= 5V
= 12V
2
= 100Hz
0.4
100
f
IN
DD
OUTPUT POWER (W)
= 10kHz
OUTPUT POWER (W)
f
IN
FREQUENCY (Hz)
4
= 10kHz
0.8
= 3.3V = GND = PGND = 0V, V
L
_______________________________________________________________________________________
f
IN
= 8Ω, unless otherwise noted. C
f
1k
IN
= 1kHz
6
= 1kHz
1.2
8
10k
1.6
10
100k
2.0
12
0.001
0.001
0.01
0.01
0.01
100
100
0.1
0.1
Typical Operating Characteristics (continued)
10
0.1
10
10
1
1
Amplifier with Volume Control
1
10
0
0
MUTE
PV
R
FILTERLESS MODULATION
P
PV
R
f
FILTERLESS MODULATION
IN
PV
R
PWM MODE
f
L
OUT
L
IN
L
DD
= 8Ω
DD
= 8Ω
= 1kHz
PLUS NOISE vs. OUTPUT POWER
PLUS NOISE vs. OUTPUT POWER
TOTAL HARMONIC DISTORTION
DD
= 8Ω
TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
= 100Hz
BIAS
PLUS NOISE vs. FREQUENCY
= 4W
= 12V
= 12V
FIXED-FREQUENCY
MODULATION
10W Mono Class D Speaker
= 12V
FIXED-FREQUENCY
MODULATION
2
2
= 0V; 0dB volume setting; all speaker load resistors connected between
100
SPREAD-SPECTRUM
MODULATION
= 2.2µF, C1 = C2 = 0.1µF, C
OUTPUT POWER (W)
OUTPUT POWER (W)
FREQUENCY (Hz)
f
IN
4
4
f
= 10kHz
IN
= 1kHz
1k
SPREAD-SPECTRUM
MODULATION
6
6
10k
8
8
100k
10
10
0.001
0.001
IN
0.01
0.01
0.01
100
100
0.1
0.1
0.1
10
10
10
1
1
1
= 0.47µF, R
10
0
0
PV
R
FILTERLESS MODULATION
PV
R
f
PWM MODE
PV
R
PWM MODE
P
IN
L
L
L
OUT
DD
DD
= 8Ω
= 8Ω
= 1kHz
PLUS NOISE vs. OUTPUT POWER
PLUS NOISE vs. OUTPUT POWER
DD
SPREAD-SPECTRUM
MODULATION
f
= 8Ω
TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
IN
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
FIXED-FREQUENCY
MODULATION
= 5V
= 12V
FIXED-FREQUENCY
MODULATION
= 4W
= 12V
= 100Hz
2
100
0.5
OUTPUT POWER (W)
OUTPUT POWER (W)
IN
FREQUENCY (Hz)
f
IN
4
= 20kΩ, R
= 10kHz
1.0
f
1k
IN
= 1kHz
SPREAD-SPECTRUM
MODULATION
6
10k
1.5
FB
8
= 30kΩ,
100k
2.0
10
7