max9725betct Maxim Integrated Products, Inc., max9725betct Datasheet - Page 5

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

(V
to 22kHz, T
DD
1V, Low-Power, DirectDrive, Stereo Headphone
0.001
0.001
-100
0.01
0.01
100
-10
-20
-30
-40
-50
-60
-70
-80
-90
0.1
0.1
10
0
= 1.5V, PGND = SGND = 0V, V
1
1
10
10
0
V
R
TOTAL HARMONIC DISTORTION PLUS
V
R
A
TOTAL HARMONIC DISTORTION PLUS
V
R
A
POWER-SUPPLY REJECTION RATIO
DD
L
DD
L
V
DD
L
V
= 32Ω
= 32Ω
A
= -2V/V
= 16Ω
= -2V/V
= 1V
= 1V
= 1V
P
= +25°C, unless otherwise noted.) (See the Functional Diagrams.)
P
OUT
NOISE vs. OUTPUT POWER
OUT
100
NOISE vs. FREQUENCY
100
= 0.7mW
= 4mW
OUTPUT POWER (mW)
vs. FREQUENCY
FREQUENCY (Hz)
FREQUENCY (Hz)
5
_______________________________________________________________________________________
1k
1k
f
f
IN
IN
= 20Hz
= 1kHz
10
10k
f
10k
IN
= 10kHz
SHDN
100k
100k
15
= 1.5V, V
0.001
0.001
0.01
0.01
Typical Operating Characteristics (continued)
-100
-120
100
100
0.1
0.1
10
-20
-40
-60
-80
10
1
1
0
SS
10
0
0
TOTAL HARMONIC DISTORTION PLUS
TOTAL HARMONIC DISTORTION PLUS
V
R
A
V
P
R
V
R
A
= PV
DD
L
V
DD
OUT
L
DD
L
V
= 32Ω
= -2V/V
= 32Ω
= 16Ω
= -2V/V
= 1V
= 1.5V
= 1.5V
CROSSTALK vs. FREQUENCY
= 5mW
NOISE vs. OUTPUT POWER
NOISE vs. OUTPUT POWER
SS,
100
10
OUTPUT POWER (mW)
OUTPUT POWER (mW)
C1 = C2 = 1µF, C
5
Amplifier with Shutdown
FREQUENCY (Hz)
20
1k
f
f
IN
IN
f
f
IN
IN
= 20Hz
= 1kHz
= 20Hz
= 1kHz
LEFT TO RIGHT
RIGHT TO LEFT
10
f
IN
f
IN
30
10k
= 10kHz
= 10kHz
IN
= 1µF, THD+N measurement bandwidth = 22Hz
100k
15
40
0.001
0.01
100
-100
-110
0.1
10
-10
-20
-30
-40
-50
-60
-70
-80
-90
1
80
70
60
50
40
30
20
10
0
10
0
0.9
TOTAL HARMONIC DISTORTION PLUS
V
R
A
OUTPUT POWER vs. SUPPLY VOLTAGE
V
R
DD
L
V
f
R
BOTH INPUTS
DRIVEN IN-PHASE
POWER-SUPPLY REJECTION RATIO
DD
L
IN
L
= 32Ω
= -2V/V
= 32Ω
= 1kHz
= 16Ω
= 1.5V
= 1.5V
NOISE vs. OUTPUT POWER
10
100
OUTPUT POWER (mW)
SUPPLY VOLTAGE (V)
vs. FREQUENCY
1.1
FREQUENCY (Hz)
f
f
20
IN
IN
1k
= 20Hz
= 1kHz
f
THD+N = 10%
IN
THD+N = 1%
1.3
= 10kHz
30
10k
100k
40
1.5
5