Datasheet

MAX9759
3.2W, High-Efficiency, Low-EMI,
Filterless, Class D Audio Amplifier
8 _______________________________________________________________________________________
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
MAX9759 toc25
FREQUENCY (Hz)
CMRR (dB)
10k1k100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10 100k
INPUT REFERRED
V
IN
= 200mV
P-P
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9759 toc26
FREQUENCY (Hz)
PSRR (dB)
10k1k100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10 100k
OUTPUT REFERRED
INPUTS AC GROUNDED
Typical Operating Characteristics (continued)
(V
DD
= PV
DD
= SHDN = MUTE = 5V, GND = PGND = 0V, SYNC = V
DD
(SSM), unless otherwise noted. Gain = 12dB (G1 = 0, G2 = 1).
THD+N measurement bandwidth: 22Hz to 22kHz. Typical values are at T
A
= +25°C.) (See Typical Operating Circuit)
MUTE RESPONSE
MAX9759 toc32
20ms/div
5V
0V
500mV/div
MAX9759
OUTPUT
MUTE
f = 1kHz
R
L
= 8Ω
SHUTDOWN RESPONSE
MAX9759 toc31
20ms/div
5V
0V
500mV/div
MAX9759
OUTPUT
SHDN
f = 1kHz
R
L
= 8Ω
OUTPUT FREQUENCY SPECTRUM
MAX9759 toc28
FREQUENCY (Hz)
OUTPUT MAGNITUDE (dBV)
15k10k5k
-120
-100
-80
-60
-40
-20
0
-140
020k
SSM MODE
V
OUT
= -60dBV
f
IN
= 1kHz
R
L
= 8
Ω
UNWEIGHTED
WIDEBAND OUTPUT SPECTRUM
(FFM MODE)
MAX9759 toc29
FREQUENCY (Hz)
OUTPUT AMPLITUDE (dBV)
100M10M
-50
-40
-30
-20
-10
0
10
20
30
40
-60
1M 1000M
RBW = 10kHz
OUTPUT FREQUENCY SPECTRUM
MAX9759 toc27
FREQUENCY (Hz)
OUTPUT MAGNITUDE (dBV)
15k10k5k
-120
-100
-80
-60
-40
-20
0
-140
020k
FFM MODE
V
OUT
= -60dBV
f
IN
= 1kHz
R
L
= 8
Ω
UNWEIGHTED
WIDEBAND OUTPUT SPECTRUM
(SSM MODE)
MAX9759 toc30
FREQUENCY (Hz)
OUTPUT AMPLITUDE (dBV)
100M10M
-50
-40
-30
-20
-10
0
10
20
30
40
-60
1M 1000M
RBW = 10kHz