MAX9776 Maxim Integrated Products, MAX9776 Datasheet - Page 12

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

www.datasheet4u.com
2 x 1.5W, Stereo Class D Audio Subsystem
with DirectDrive Headphone Amplifier
12
(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.)
0.001
DD
0.01
100
0.1
10
500
450
400
350
300
250
200
150
100
1
50
______________________________________________________________________________________
TOTAL HARMONIC DISTORTION PLUS NOISE
= PV
0
0
0
V
R
DD
L
f = 20Hz
= 16Ω
DD
= 3.3V
= CPV
30
TOTAL OUTPUT POWER (mW)
f = 1kHz
vs. OUTPUT POWER
POWER DISSIPATION
OUTPUT POWER (mW)
vs. OUTPUT POWER
40
DD
60
= 3.3V, GND = PGND = CPGND = 0V, SHDN = V
V
f = 1kHz
R
P
DD
L
OUT
= 32Ω
= 5V
= P
80
90
OUTR
f = 10kHz
+ P
OUTL
120
120
0.001
0.01
Typical Operating Characteristics (continued)
500
450
400
350
300
250
200
150
100
100
0.1
50
10
0
1
TOTAL HARMONIC DISTORTION PLUS NOISE
0
0
V
R
DD
L
f = 20Hz
= 32Ω
= 3.3V
TOTAL OUTPUT POWER (mW)
40
20
POWER DISSIPATION
vs. OUTPUT POWER
vs. OUTPUT POWER
OUTPUT POWER (mW)
R
R
L
f = 1kHz
L
= 16Ω
= 32Ω
80
40
V
f = 1kHz
P
DD
OUT
DD
= 3.3V
= P
, I
OUTR
120
60
f = 10kHz
2
C default gain settings (INA gain = +20dB, INB gain =
+ P
OUTL
160
80
0.001
0.01
100
0.1
10
1
65
60
55
50
45
40
35
30
TOTAL HARMONIC DISTORTION PLUS NOISE
0
2.7
vs. COMMON-MODE VOLTAGE
0.5
3.2
COMMON-MODE VOLTAGE (V)
V
f
P
GAIN = +3dB
R
IN
DD
OUT
L
vs. SUPPLY VOLTAGE
= 1kHz
= 32Ω
= 3.3V
SUPPLY VOLTAGE (V)
THD+N = 1%
THD+N = 10%
= 30mW
OUTPUT POWER
3.7
1.0
LSP
) are terminated
4.2
1.5
4.7
2.0
R
f = 1kHz
L
= 32Ω
5.2
A
2.5
=