Datasheet

10
100 1k 10k 100k
0
10
20
30
40
50
60
70
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
V
IN
(DC) = 3.25V
V
IN
(AC) = 1V(p-p)
C
OUT
= 1 PF
10
100 1k 10k 100k
0
10
20
30
40
50
60
70
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
V
IN
(DC) = 3.25V
V
IN
(AC) = 1V(p-p)
C
OUT
= 100 PF
10 100 1k 10k 100k
FREQUENCY (Hz)
0.0
0.5
1.0
1.5
NOISE (PV/
Hz)
C
OUT
= 100 PF
10
100 1k 10k 100k
0
10
20
30
40
50
60
70
FREQUENCY (Hz)
RIPPLE REJECTION (dB)
V
IN
(DC) = 3.25V
V
IN
(AC) = 1V(p-p)
C
OUT
= 10 PF
10 100 1k 10k 100k
FREQUENCY (Hz)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
NOISE/ (PV
Hz)
C
OUT
= 1 PF
FREQUENCY (Hz)
10
100 1k 10k 100k
0.0
0.2
0.4
0.6
0.8
1.0
NOISE (PV/
Hz)
C
OUT
= 10 PF
LP38691-ADJ, LP38693-ADJ
SNVS324I –JANUARY 2005–REVISED APRIL 2013 www.ti.com
Typical Performance Characteristics
Unless otherwise specified: T
J
= 25°C, C
IN
= C
OUT
= 10 µF, enable pin is tied to V
IN
(LP38693-ADJ only), V
O
= 1.25V, V
IN
=
2.7V, I
L
= 10mA.
Noise vs Frequency Noise vs Frequency
Figure 6. Figure 7.
Noise vs Frequency Ripple Rejection
Figure 8. Figure 9.
Ripple Rejection Ripple Rejection
Figure 10. Figure 11.
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