max9728a Maxim Integrated Products, Inc., max9728a Datasheet - Page 4

• Manufacturer Part Number: max9728a
• Description: 60mw, Directdrive, Stereo Headphone Amplifier With Shutdown
• Manufacturer: Maxim Integrated Products, Inc.

60mW, DirectDrive, Stereo Headphone
Amplifiers with Shutdown
4
(V
THD+N measurement bandwidth = 22Hz to 22kHz, both outputs driven in phase, T
DD
0.001
0.001
0.01
0.01
_______________________________________________________________________________________
100
0.1
0.1
10
= 5V, PGND = SGND = 0V, SHDN = V
1
1
10
0
TOTAL HARMONIC DISTORTION PLUS
TOTAL HARMONIC DISTORTION PLUS
V
R
V
R
DD
L
DD
L
f
= 16Ω
IN
= 32Ω
= 5V
= 5V
= 1kHz
NOISE vs. OUTPUT POWER
20
NOISE vs. FREQUENCY
100
P
OUTPUT POWER (mW)
OUT
FREQUENCY (Hz)
40
= 30mW
P
OUT
f
IN
1k
= 50mW
= 20Hz
60
f
IN
= 10kHz
10k
80
100k
100
DD
, C1 = C2 = 1µF, R
0.001
0.01
100
0.1
70
60
50
40
30
20
10
10
0
1
4.5
0
OUTPUT POWER vs. SUPPLY VOLTAGE
TOTAL HARMONIC DISTORTION PLUS
V
R
DD
L
= 32Ω
= 5V
THD+N = 10%
20
NOISE vs. OUTPUT POWER
f
IN
= 1kHz
SUPPLY VOLTAGE (V)
OUTPUT POWER (mW)
40
L
= ∞, gain = -1.5V/V (R
5.0
f
60
THD+N = 1%
IN
= 20Hz
Typical Operating Characteristics
80
f
IN
f
R
IN
= 10kHz
L
100
= 1kHz
= 16Ω
A
120
5.5
= +25°C, unless otherwise noted.)
IN
= 20kΩ, R
0.001
0.01
120
100
0.1
80
60
40
20
0
1
4.5
10
OUTPUT POWER vs. SUPPLY VOLTAGE
TOTAL HARMONIC DISTORTION PLUS
V
R
DD
L
= 16Ω
F
= 5V
THD+N = 10%
= 30kΩ for the MAX9728A),
NOISE vs. FREQUENCY
100
SUPPLY VOLTAGE (V)
P
FREQUENCY (Hz)
OUT
THD+N = 1%
= 37mW
5.0
1k
P
OUT
= 20mW
10k
f
R
IN
L
= 1kHz
= 32Ω
100k
5.5