Texas Instruments AN-1922 LM48511, Руководство пользователя, Страница: 7 / 15

30
5
2.5 6.0 3.0 3.5 4.0 4.5 5.0 5.5
15
20
25
10
SUPPLY VOLTAGE (V)
SU
PPL
Y
C
U
R
R
EN
T
(
mA)
SPREAD SPECTRUM
FIXED FREQUENCY
23
5
2.5 6.0
7
9
11
13
15
17
19
21
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
SU
PPL
Y
C
U
R
R
EN
T
(
mA)
SPREAD SPECTRUM
FIXED FREQUENCY
0
-20
-40
-60
-80
-100
20 200 2k 20k
FREQUENCY (Hz)
PSR
R
(d
B
)
SPREAD SPECTRUM
FIXED FREQUENCY
0
-20
-40
-60
-80
-100
20 200 2k 20k
PSR
R
(d
B
)
FREQUENCY (Hz)
FIXED FREQUENCY
SPREAD SPECTRUM
www.ti.com
Typical Performance Characteristics
PSRR vs Frequency PSRR vs Frequency
V
DD
= 3.6V, R
L
= 8 Ω V
DD
= 3V, R
L
= 8 Ω
V
RIPPLE
= 200mV
PP
, PV
1
= 7V V
RIPPLE
= 200mV
PP
, PV
1
= 4.8V
Supply Current vs Supply Voltage Supply Current vs Supply Voltage
PV
1
= 7.8V PV
1
= 7V
7 SNAA064C – November 2008 – Revised May 2013 AN-1922 LM48511 Evaluation Board
Submit Documentation Feedback
Copyright © 2008–2013, Texas Instruments Incorporated