MAX9755 Maxim Integrated Products, MAX9755 Datasheet - Page 9

• Manufacturer Part Number: MAX9755
• Description: 2.6W Stereo Audio Power Amplifiers and DirectDrive Headphone Amplifiers
• Manufacturer: Maxim Integrated Products

(Measurement BW = 22Hz to 22kHz, T
-100
-120
-20
-40
-60
-80
0
10
V
V
R
CC
RIPPLE
L
= 32Ω
RIGHT TO LEFT
HPOUT_
= 5V
CROSSTALK vs. FREQUENCY
SHDN
= 200mV
100
(HEADPHONE MODE)
10
18
16
14
12
LEFT TO RIGHT
8
6
4
2
0
4.50
FREQUENCY (Hz)
2.6W Stereo Audio Power Amplifiers and
P-P
_______________________________________________________________________________________
HPS = GND
R
L
1k
= 32Ω
4.75
vs. SUPPLY VOLTAGE
TURN-ON RESPONSE
(HEADPHONE MODE)
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
10k
10ms/div
5.00
HPS = V
DirectDrive Headphone Amplifiers
A
100k
= +25°C, unless otherwise noted.)
DD
5.25
MAX9750/51 toc28
Typical Operating Characteristics (continued)
200
180
160
140
120
100
80
60
40
20
0
5.50
10
CAPACITANCE AND LOAD RESISTANCE
5V/div
20mV/div
C1 = C2 = 1µF
OUTPUT POWER vs. CHARGE-PUMP
20
LOAD RESISTANCE (Ω)
C1 = C2 = 2.2µF
30
V
f = 1kHz
THD+N = 1%
40
DD
HPOUT_
= 5V
SHDN
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
50
4.50
R
L
SHUTDOWN SUPPLY CURRENT
= 32Ω
TURN-OFF RESPONSE
4.75
(HEADPHONE MODE)
-100
-120
-140
vs. SUPPLY VOLTAGE
-20
-40
-60
-80
SUPPLY VOLTAGE (V)
0
0
10ms/div
HEADPHONE OUTPUT SPECTRUM
5.00
5
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FREQUENCY (Hz)
5.25
MAX9750/51 toc29
10
5.50
5V/div
20mV/div
V
f = 1kHz
V
R
DD
OUT
L
15
= 32Ω
= 5V
= -60dB
20
9