Datasheet

Low-Power, Low-Offset, Dual Mode, Class H
DirectDrive Headphone Amplifier
MAX97200
5
Typical Operating Characteristics (continued)
(V
PVIN
= 1.8V, V
PGND
= V
GND
= 0V, V
SHDN
= 1.8V, C1 = C2 = C3 = 1FF, C4 = 10FF, both channels driven in phase, T
A
= +25NC,
unless otherwise noted.)
OUTPUT POWER
vs. LOAD RESISTANCE
MAX97200 toc07
LOAD RESISTANCE (I)
OUTPUT POWER (mW)
100010010
10
20
30
40
50
60
70
80
0
1 10,000
10% THD + N
1% THD + N
OUTPUT POWER vs. LOAD RESISTANCE
AND CHARGE-PUMP CAPACITOR
MAX97200 toc08
LOAD RESISTANCE (I)
OUTPUT POWER (mW)
1000100
10
20
30
40
50
60
70
80
0
10 10,000
C
1
= C
2
= C
3
= 2.2µF
C
1
= C
2
= C
3
= .47µF
C
1
= C
2
= C
3
= 1µF
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX97200 toc11
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
1.951.901.65 1.70 1.75 1.80 1.85
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
RL = J
0.80
1.60 2.00
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX97200 toc12
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
1.951.901.80 1.851.70 1.751.65
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.20
0
1.60 2.00
RL = J
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX97200 toc13
FREQUENCY (kHz)
PSRR (dB)
1010.1
-100
-80
-60
-40
-20
0
-120
0.01 100
V
RIPPLE
= 200mV
P-P
CROSSTALK (dB)
-80
-70
-60
-50
-40
-30
-20
-10
0
-120
-100
-110
-90
CROSSTALK vs. FREQUENCY
5mW 16I
MAX97200 toc14
FREQUENCY (Hz)
10k1k100
10 100k
OUTPUT POWER = 5mW
R
L
= 16I
POWER CONSUMPTION
vs. OUTPUT POWER
MAX97200 toc09
OUTPUT POWER (mW)
POWER CONSUMPTON (mW)
10
20
40
60
80
100
120
140
160
0
1 100
POWER DISSIPATION
vs. OUTPUT POWER
MAX97200 toc10
OUTPUT POWER (mW)
POWER DISSIPATION (mW)
10
10
20
30
40
50
60
70
80
90
100
0
1 100
R
L
= 32I
R
L
= 16I
IN-BAND OUTPUT SPECTRUM
MAX97200 toc15
FREQUENCY (Hz)
OUTPUT MAGNITUDE (dBV)
1010.1
-140
-120
-100
-80
-60
-40
-20
0
-160
0.01 100
f = 1kHz