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SLOS438C – DECEMBER 2004 – REVISED MARCH 2007
TYPICAL CHARACTERISTICS (continued)
COMMOM-MODE
REJECTION RATIO
vs
COMMON-MODE
INPUT VOLTAGE
20
CMRR − Common-Mode Rejection Ratio − dB
V
DD
= 2.5 V
0
V
DD
= 3.6 V
CMRR − Common-Mode Rejection Ratio − dB
−50
V
IC
= 1 V
PP
,
R
L
= 8
W,
A
V
= 6 dB
−55
COMMON-MODE
REJECTION RATIO
vs
FREQUENCY
GSM POWER
SUPPLY REJECTION
vs
TIME
C1 − High, 3.6 V
C1 − Amp, 512 mV
C1 − Duty, 12%
−20
V
DD
= 5.5 V
−40
−60
−65
V
DD
= 2.5 V
V
DD
= 3.6 V
−60
−70
−80
V
DD
= 5 V
−75
20
100
1k
f − Frequency − Hz
10 k 20 k
−100
0
1
2
3
4
5
V
ICR
− Common-Mode Input Voltage Range − V
VOUT
20 mV/div
VDD
200 mV/div
t − Time − 2 ms/div
Figure 19.
Figure 20.
SUPLY VOLTAGE
REJECTION RATIO
vs
DC COMMON-MODE VOLTAGE
0
k SVR − Supply Voltage Rejection Ratio − dB
−10
−20
V
DD
= 3.6 V
−30
V
DD
= 5 V
−40
V
DD
= 2.7 V
−50
−60
−70
−80
−90
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
R
L
= 8
W,
V
IN
= 200 mV
PP
f = 217 Hz
Figure 21.
POWER SUPPLY REJECTION
vs
FREQUENCY
0
Input
−20
Supply Signal Ripple − V
−40
−60
−80
−100
−120
−140
Output
−160
0
500
1000
1500
2000
f − Frequency − Hz
C
I
= 1
mF,
Inputs AC Grounded,
A
V
= 6 dB
V
DD
= 3.6 V
0
−20
Power-Supply Rejection Output − V
−40
−60
−80
−100
−120
−140
−160
2500
POWER DISSIPATION
vs
OUTPUT POWER
0.7
0.6
PD − Power Dissipation − W
0.5
0.4
0.3
0.2
0.1
0
0
0.2
0.4
R
L
= 8 Ω
Powers are per Channel
0.6
0.8
1
1.2
1.4
Class-AB,
V
DD
= 3.6 V
R
L
= 8 Ω
R
L
= 4 Ω
R
L
= 4 Ω
Class-AB,
V
DD
= 3.6 V
QFN
P
O
− Output Power − W
DC Common Mode Voltage − V
Figure 22.
Figure 23.
Figure 24.
9
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