MAX9776 Maxim Integrated Products, MAX9776 Datasheet - Page 8

• Manufacturer Part Number: MAX9776
• Description: (MAX9775 / MAX9776) Stereo Class D Audio Subsystem
• Manufacturer: Maxim Integrated Products

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2 x 1.5W, Stereo Class D Audio Subsystem
with DirectDrive Headphone Amplifier
(V
INC gain = 0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). Speaker load resistors (R
between OUT_+ and OUT_-, headphone load resistors are terminated to GND, unless otherwise stated. C1 = C2 = C3 = 1µF. T
+25°C, unless otherwise noted.)
8
DD
0.001
0.001
0.01
0.01
100
100
0.1
0.1
_______________________________________________________________________________________
10
10
1
1
= PV
TOTAL HARMONIC DISTORTION PLUS NOISE
TOTAL HARMONIC DISTORTION PLUS NOISE
0
0
V
R
V
R
f = 1kHz
DD
L
DD
L
DD
= 8Ω
= 8Ω
f = 20Hz
= 5V
= 5V
0.3
0.3
= CPV
vs. OUTPUT POWER
vs. OUTPUT POWER
SSM
OUTPUT POWER (W)
OUTPUT POWER (W)
0.6
0.6
DD
f = 1kHz
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V
0.9
0.9
FFM
1.2
1.2
f = 10kHz
1.5
1.5
0.001
Typical Operating Characteristics (continued)
0.01
100
0.1
100
10
90
80
70
60
50
40
30
20
10
1
TOTAL HARMONIC DISTORTION PLUS NOISE
0
0
0
V
R
DD
L
= 4Ω
f = 20Hz
= 3.3V
R
L
0.8
= 8Ω
0.2
vs. OUTPUT POWER
vs. OUTPUT POWER
OUTPUT POWER (W)
OUTPUT POWER (W)
EFFICIENCY
R
L
1.6
= 4Ω
0.4
V
f
P
IN
f = 1kHz
DD
OUT
2.4
= 1kHz
DD
= 5V
= P
, I
OUTL
0.6
2
C default gain settings (INA gain = +20dB, INB gain =
f = 10kHz
3.2
+ P
OUTR
0.8
4.0
0.001
0.01
100
0.1
100
10
90
80
70
60
50
40
30
20
10
1
TOTAL HARMONIC DISTORTION PLUS NOISE
0
0
0
V
R
DD
L
= 8Ω
f = 20Hz
= 3.3V
R
L
0.4
= 8Ω
vs. OUTPUT POWER
vs. OUTPUT POWER
OUTPUT POWER (W)
OUTPUT POWER (W)
0.2
EFFICIENCY
R
0.8
L
LSP
= 4Ω
) are terminated
V
f
P
IN
DD
OUT
1.2
= 1kHz
f = 1kHz
= 3.3V
0.4
= P
OUTL
1.6
f = 10kHz
+ P
OUTR
A
=
0.6
2.0