max9725betct Maxim Integrated Products, Inc., max9725betct Datasheet - Page 6

• Manufacturer Part Number: max9725betct
• Description: Max9725 1v, Low-power, Directdrive, Stereo Headphone Amplifier With Shutdown
• Manufacturer: Maxim Integrated Products, Inc.

1V, Low-Power, DirectDrive, Stereo Headphone
Amplifier with Shutdown
(V
to 22kHz, T
6
DD
_______________________________________________________________________________________
80
70
60
50
40
30
20
10
50
45
40
35
30
25
20
15
10
40
35
30
25
20
15
10
= 1.5V, PGND = SGND = 0V, V
0
5
0
5
0
0.9
10
0
CAPACITANCE AND LOAD RESISTANCE
f
R
BOTH INPUTS
DRIVEN IN-PHASE
C1 = C2 = 0.47μF
IN
OUTPUT POWER vs. CHARGE-PUMP
L
A
= 1kHz
= 32Ω
= +25°C, unless otherwise noted.) (See the Functional Diagrams.)
10
vs. SUPPLY VOLTAGE
POWER DISSIPATION
20
R
vs. OUTPUT POWER
R
L
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
SUPPLY VOLTAGE (V)
L
OUTPUT POWER
C1 = C2 = 0.68μF
= 16Ω
C1 = C2 = 2.2μF
1.1
= 32Ω
20
THD+N = 10%
THD+N = 1%
30
C1 = C2 = 1μF
V
f
P
OUTPUTS IN-PHASE
IN
DD
OUT
30
= 1kHz
= 1.5V
1.3
= P
OUTL
V
f
THD+N = 1%
40
IN
DD
40
= 1kHz
= 1.5V
+ P
SHDN
OUTR
1.5
50
50
= 1.5V, V
-100
-120
-140
-160
Typical Operating Characteristics (continued)
-20
-40
-60
-80
80
70
60
50
40
30
20
10
35
30
25
20
15
10
0
0
5
0
SS
0
10
0
= PV
THD+N = 10%
SS,
vs. LOAD RESISTANCE
R
POWER DISSIPATION
5
5
OUTPUT SPECTRUM
vs. OUTPUT POWER
R
L
L
OUTPUT POWER (mW)
THD+N = 1%
LOAD RESISTANCE (Ω)
= 16Ω
vs. FREQUENCY
C1 = C2 = 1µF, C
OUTPUT POWER
= 32Ω
FREQUENCY (kHz)
10
100
10
V
f
P
OUTPUTS IN-PHASE
IN
DD
OUT
= 1kHz
V
f
BOTH INPUTS
DRIVEN IN-PHASE
IN
= 1V
DD
= P
= 1kHz
f
R
V
V
IN
L
OUT
DD
= 1.5V
15
OUTL
15
= 1kHz
= 32Ω
= 1.5V
= -60dBV
+ P
IN
OUTR
= 1µF, THD+N measurement bandwidth = 22Hz
1k
20
20
80
70
60
50
40
30
20
10
-10
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
2
1
0
0
0.9
10
10
NO LOAD
V
f
BOTH INPUTS
DRIVEN IN-PHASE
THD+N = 10%
IN
DD
= 1kHz
= 1V
1.0
THD+N = 1%
100
vs. LOAD RESISTANCE
vs. SUPPLY VOLTAGE
LOAD RESISTANCE (Ω)
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
OUTPUT POWER
vs. FREQUENCY
GAIN FLATNESS
1.1
FREQUENCY (Hz)
100
1k
1.2
1.3
10k
1.4
100k
1k
1.5