MAX9779 Maxim Integrated Products, MAX9779 Datasheet - Page 8

• Manufacturer Part Number: MAX9779
• Description: 2.6W Stereo Audio Power Amplifier and DirectDrive Headphone Amplifier
• Manufacturer: Maxim Integrated Products

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2.6W Stereo Audio Power Amplifier and
DirectDrive Headphone Amplifier
(Measurement BW = 22Hz to 22kHz, T
8
_______________________________________________________________________________________
HPOUT_
SHDN
200
180
160
140
120
100
10
18
16
14
12
80
60
40
20
8
6
4
2
0
0
4.50
10
CAPACITANCE AND LOAD RESISTANCE
OUTPUT POWER vs. CHARGE-PUMP
C1 = C2 = 1µF
HPS = GND
R
L
= 32Ω
4.75
TURN-ON RESPONSE
(HEADPHONE MODE)
vs. SUPPLY VOLTAGE
20
SUPPLY CURRENT
LOAD RESISTANCE (Ω)
SUPPLY VOLTAGE (V)
10ms/div
C1 = C2 = 2.2µF
5.00
30
HPS = V
A
= +25°C, unless otherwise noted.)
DD
V
f = 1kHz
THD+N = 1%
5.25
DD
40
MAX9750/51 toc28
= 5V
Typical Operating Characteristics (continued)
5.50
50
5V/div
20mV/div
HPOUT_
SHDN
-100
-120
-140
0.35
0.30
0.25
0.20
0.15
0.10
0.05
-20
-40
-60
-80
0
0
4.50
0
R
HEADPHONE OUTPUT SPECTRUM
L
SHUTDOWN SUPPLY CURRENT
= 32Ω
4.75
TURN-OFF RESPONSE
(HEADPHONE MODE)
vs. SUPPLY VOLTAGE
5
SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
10ms/div
5.00
10
V
f = 1kHz
V
R
DD
OUT
L
5.25
15
MAX9750/51 toc29
= 32Ω
= 5V
= -60dB
5.50
20
5V/div
20mV/div