Datasheet

REF19x Series Data Sheet
Rev. L | Page 18 of 28
00371-009
FREQUENCY (Hz)
1M10 100 1k 10k 100k
RIPPLE REJECTION (dB)
–20
0
–60
–40
–80
–120
–100
Figure 9. Ripple Rejection vs. Frequency
REF19x
1kΩ
REF
10μF
V
IN
= 15V
OUTPUT
1kΩ
10μF
1μF10μF
2 6
4
00371-010
Figure 10. Ripple Rejection vs. Frequency Measurement Circuit
00371-011
FREQUENCY (Hz)
10M10 100 10k1k 100k 1M
Z
O
(Ω)
4
3
2
1
0
V
G
= 2V p-p
V
S
= 4V
V
IN
= 7V 200V
1μF1μF
REF19x
2 6
4
Z
Figure 11. Output Impedance vs. Frequency
O
FF
ON
100µs20mV
5V
10%
0%
90%
100%
00371-012
Figure 12. Load Transient Response
V
IN
= 15V
0
10mA
1μF
REF19x
4
2
6
00371-013
Figure 13. Load Transient Response Measurement Circuit
2V
2V
1mA
LOAD
30mA
LOAD
100µs
10%
100%
0%
90%
00371-014
Figure 14. Power-On Response Time
V
IN
= 7V
1μF
REF19x
4
2
6
00371-015
Figure 15. Power-On Response Time Measurement Circuit