max9728a Maxim Integrated Products, Inc., max9728a Datasheet - Page 5

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

(V
THD+N measurement bandwidth = 22Hz to 22kHz, both outputs driven in phase, T
DD
100
90
80
70
60
50
40
30
20
10
80
70
60
50
40
30
20
0
= 5V, PGND = SGND = 0V, SHDN = V
10
0
OUTPUT POWER vs. LOAD RESISTANCE
AND CHARGE-PUMP CAPACITOR SIZE
C1 = C2 = 2.2µF
V
f
IN
DD
= 1kHz
50
= 5V
C1 = C2 = 0.47µF
vs. LOAD RESISTANCE
LOAD RESISTANCE (Ω)
LOAD RESISTANCE (Ω)
OUTPUT POWER
100
C1 = C2 = 1µF
_______________________________________________________________________________________
THD+N = 1%
100
150
60mW, DirectDrive, Stereo Headphone
THD+N = 10%
200
V
f
THD+N = 1%
IN
DD
= 1kHz
= 5V
250
1000
300
DD
, C1 = C2 = 1µF, R
-100
-120
-20
-40
-60
-80
3.50
3.45
3.40
3.35
3.30
3.25
3.20
Typical Operating Characteristics (continued)
0
4.5
10
R
V
L
DD
= 32Ω
= 5V
POWER-SUPPLY REJECTION
RATIO vs. FREQUENCY
100
vs. SUPPLY VOLTAGE
SUPPLY CURRENT
Amplifiers with Shutdown
SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
L
NO LOAD INPUTS GROUND
= ∞, gain = -1.5V/V (R
1k
5.0
10k
A
100k
5.5
= +25°C, unless otherwise noted.)
IN
= 20kΩ, R
-100
-120
-20
-40
-60
-80
0
10
9
8
7
6
5
4
3
2
1
0
4.5
10
P
R
OUT
L
= 16Ω
F
CROSSTALK vs. FREQUENCY
= 15mW
= 30kΩ for the MAX9728A),
100
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
LEFT TO RIGHT
SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
NO LOAD INPUTS GROUND
1k
5.0
RIGHT TO LEFT
10k
100k
5.5
5