max9724c Maxim Integrated Products, Inc., max9724c Datasheet - Page 6

• Manufacturer Part Number: max9724c
• Description: Low Rf Susceptibility Directdrive Stereo Head- Phone Amplifier With 1.8v Compatible Shutdown
• Manufacturer: Maxim Integrated Products, Inc.

Low RF Susceptibility DirectDrive Stereo Head-
phone Amplifier with 1.8V Compatible Shutdown
(V
THD+N measurement bandwidth = 22Hz to 22kHz, both outputs driven in phase, T
6
DD
100
250
200
150
100
90
80
70
60
50
40
30
20
10
50
35
30
25
20
15
10
_______________________________________________________________________________________
0
0
5
0
= 5V, PGND = SGND = 0V, SHDN = V
2.5
10
0
THD+N = 10%
f
R
IN
L
= 1kHz
= 32Ω
R
vs. LOAD RESISTANCE (UCSP)
vs. SUPPLY VOLTAGE (TQFN)
3.0
L
vs. OUTPUT POWER (TQFN)
= 16Ω
THD+N = 1%
POWER DISSIPATION
20
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
SUPPLY VOLTAGE (V)
OUTPUT POWER
3.5
OUTPUT POWER
10% THD+N
4.0
100
40
V
f
P
OUTPUTS IN PHASE
IN
DD
OUT
= 1kHz
R
= 3V
L
4.5
= P
= 32Ω
1% THD+N
OUTL
60
V
f
IN
5.0
+ P
DD
= 1kHz
= 3V
OUTR
1000
5.5
80
DD
, C1 = C2 = 1µF, R
160
140
120
100
100
100
Typical Operating Characteristics (continued)
80
60
40
20
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0
2.5
10
0
V
f
f
R
IN
IN
L
DD
5
= 1kHz
= 32Ω
= 1kHz
vs. LOAD RESISTANCE (TQFN)
R
vs. SUPPLY VOLTAGE (UCSP)
= 5V
3.0
vs. OUTPUT POWER (UCSP)
L
10 15 20 25 30
THD+N = 10%
= 16Ω
POWER DISSIPATION
LOAD RESISTANCE (Ω)
OUTPUT POWER (mW)
SUPPLY VOLTAGE (V)
OUTPUT POWER
OUTPUT POWER
10% THD+N
3.5
THD+N = 1%
L
= ∞, gain = -1.5V/V (R
4.0
V
f
P
OUTPUTS IN PHASE
IN
R
DD
OUT
L
1% THD+N
= 1kHz
= 32Ω
= 3V
= P
4.5
35
OUTL
40 45
+ P
5.0
OUTR
A
100
5.5
50
= +25°C, unless otherwise noted.)
IN
= 20kΩ, R
-120
-100
100
-20
-40
-60
-80
90
80
70
60
50
40
30
20
10
35
30
25
20
15
10
5
0
0
0
10
10
10
10% THD+N
R
V
f
POWER-SUPPLY REJECTION RATIO
IN
L
DD
= 32Ω
= 1kHz
F
vs. LOAD RESISTANCE (UCSP)
V
vs. LOAD RESISTANCE (TQFN)
= 5V
DD
= 30kΩ for the MAX9724C),
THD+N = 10%
= 5V
100
LOAD RESISTANCE (Ω)
LOAD RESISTANCE (Ω)
OUTPUT POWER
OUTPUT POWER
1% THD+N
vs. FREQUENCY
FREQUENCY (Hz)
V
DD
THD+N = 1%
= 3V
100
1k
10k
V
f
IN
DD
= 1kHz
= 3V
1000
100
100k