max9768betgt Maxim Integrated Products, Inc., max9768betgt Datasheet - Page 9

• Manufacturer Part Number: max9768betgt
• Description: Max9768 10w Mono Class D Speaker Amplifier With Volume Control
• Manufacturer: Maxim Integrated Products, Inc.

(PV
OUT+ and OUT-, R
spread-spectrum modulation mode.)
-100
-100
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
DD
POWER-SUPPLY REJECTION RATIO (PV
(FIXED-FREQUENCY MODULATION MODE)
10
1
PV
V
R
RIPPLE
L
OUTPUT WAVEFORM (PWM MODE)
= 12V, V
DD
= 8Ω
WIDEBAND OUTPUT SPECTRUM
= 12V
= 100mV
PWM MODE
100
vs. FREQUENCY
10
FREQUENCY (MHz)
FREQUENCY (Hz)
DD
P-P
RBW = 10kHz
INPUT AC GROUNDED
FILTERLESS MODULATION
1μs/div
FILTERLESS MODULATION
= 3.3V = GND = PGND = 0V, V
L
1k
_______________________________________________________________________________________
_______________________________________________________________________________________
= 8Ω, unless otherwise noted. C
100
10k
MAX9768 toc25
1000
100k
DD
)
5V/div
5V/div
-100
-100
-100
-120
-140
-10
-20
-30
-40
-50
-60
-70
-80
-90
Typical Operating Characteristics (continued)
-10
-20
-30
-40
-50
-60
-70
-80
-90
-20
-40
-60
-80
Amplifier with Volume Control
0
0
0
POWER-SUPPLY REJECTION RATIO (V
10
(FIXED-FREQUENCY MODULATION MODE)
1
0
MUTE
V
V
R
DD
RIPPLE
L
= 8Ω
OUTPUT FREQUENCY SPECTRUM
WIDEBAND OUTPUT SPECTRUM
BIAS
= 3.3V
10W Mono Class D Speaker
PWM MODE
= 100mV
= 0V; 0dB volume setting; all speaker load resistors connected between
100
5
= 2.2µF, C1 = C2 = 0.1µF, C
vs. FREQUENCY
10
FREQUENCY (MHz)
FILTERLESS MODULATION
FREQUENCY (Hz)
FREQUENCY (kHz)
P-P
1k
10
RBW = 10kHz
INPUT AC GROUNDED
PWM MODE
100
FFM MODE
V
f = 1kHz
R
UNWEIGHTED
10k
IN
L
15
= 8Ω
= -60dBV
DD
100k
1000
20
)
IN
-100
-100
-120
-140
-10
-20
-30
-40
-50
-60
-70
-80
-90
-20
-40
-60
-80
= 0.47µF, R
0
0
(SPREAD-SPECTRUM MODULATION MODE)
1
0
OUTPUT FREQUENCY SPECTRUM
WIDEBAND OUTPUT SPECTRUM
(FILTERLESS MODULATION)
OUTPUT WAVEFORM
5
IN
10
FREQUENCY (MHz)
FREQUENCY (kHz)
= 20kΩ, R
1μs/div
RBW = 10kHz
INPUT AC GROUNDED
FILTERLESS MODULATION
10
100
V
f = 1kHz
R
UNWEIGHTED
FB
IN
L
15
= 8Ω
= -60dBV
= 30kΩ,
MAX9768 toc24
1000
20
9
9
5V/div
5V/div