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ADR425ARZ
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
Data Sheet
ADR420/ADR421/ADR423/ADR425
Rev. J | Page 13 of 24
012345
02432-022
LO
AD CURRENT (
mA)
DIFFERENTIAL
VOL
T
AGE (V)
2.5
2.0
1.5
1.0
0.5
0
–40°C
+125°
C
+25°
C
Figure 21.
ADR423
Minimum Input/O
utput Voltag
e
Differential vs
. Load Current
012345
02432-023
LO
AD CURRENT (
mA)
DIFF
ERENTIAL VOL
T
AG
E (V)
2.5
2.0
1.5
1.0
0.5
0
–40°C
+125°
C
+25°
C
Figure 22.
ADR425
Minimum Input/O
utput Voltag
e
Differential vs
. Load Current
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
10
20
30
40
50
60
70
80
90
100
11
0
120
130
MORE
02432-024
DEVI
A
TI
ON (p
p
m)
NUMBER OF
P
ARTS
30
20
25
15
10
5
0
SAMPLE SIZE – 16
0
TEM
PERA
TURE
+25°
C –40°
C
+125°
C +25°
C
Figure 23.
ADR421
Typical Hysteresis
02432-
025
TIME
(1s
/DIV)
1µV/DI
V
Figure 24.
ADR421
Typical Nois
e Voltage 0.
1 Hz to 10 Hz
02432-
026
TIME
(1s
/DIV)
50µ
V/DIV
Figure 25. Typ
ical Noise Vo
ltage 10 H
z to 10 kHz
02432-
027
FRE
QUENC
Y (Hz)
VOLT
AGE
NOI
SE DENS
ITY (n
V/
Hz)
ADR423
ADR421
ADR420
ADR425
10
100
10
100
1k
1k
10k
Figure 26. Voltag
e Noise Dens
ity vs. Frequen
cy
ADR420/ADR421/ADR423/ADR425
Data Sheet
Rev. J | Page 14 of 24
02432-
028
TIME
(100µs/DIV)
500mV/
DIV
LI
NE INT
ERRUPT
IO
N
500mV/
DIV
C
BYPASS
= 0µF
V
IN
V
OU
T
Figure 27.
ADR421
Line Transient Respo
nse, no C
BYPASS
02432-
029
TIME
(100µs/DIV)
500mV/
DIV
LI
NE INT
ERRUPT
IO
N
500mV/
DIV
C
BYPASS
= 0.1µF
V
IN
V
OU
T
Figure 28.
ADR421
Line Transient Respo
nse, C
BYPASS
= 0.1 μF
02432-
030
TIME
(100µs/DIV)
2V/D
IV
1V/D
IV
C
L
= 0µF
LO
AD ON
LOAD
OFF
V
OU
T
1mA LO
AD
Figure 29.
ADR421
Load Transient Response, no C
L
02432-
031
TIME
(100µs/DIV)
2V/D
IV
1V/D
IV
C
L
= 100nF
LO
AD ON
LO
AD OF
F
V
OU
T
1mA LO
AD
Figure 30.
ADR421
Load Transient Response, C
L
= 100 nF
02432-
032
TIME (4
µs/DIV
)
2V/D
IV
V
IN
2V/D
IV
V
OU
T
C
IN
= 0.
01µF
NO L
OAD
Figure 31.
ADR421
Turn-Off Response
02432-
033
TIME (4
µs/DIV
)
2V
/DIV
2V
/DIV
C
IN
= 0.
01µF
NO L
OAD
V
IN
V
OU
T
Figure 32.
ADR421
Turn-On Response
Data Sheet
ADR420/ADR421/ADR423/ADR425
Rev. J | Page 15 of 24
02432-
034
TIME (4
µs/DIV
)
2V/D
IV
2V/D
IV
C
L
= 0.01µF
NO I
NPUT CAP
V
IN
V
OU
T
Figure 33.
ADR421
Turn-Off Response
02432-
035
TIME (4
µs/DIV
)
2V/D
IV
2V/D
IV
C
L
= 0.01µF
NO I
NPUT CAP
V
IN
V
OUT
Figure 34.
ADR421
Turn-On Response
02432-
036
TIME
(100µs/DIV)
2V
/DIV
5V
/DIV
V
IN
V
OUT
C
BY
P
ASS
= 0.1µF
R
L
= 500
Ω
C
L
= 0
Figure 35.
ADR421
Turn-On/Turn-Off Response
ADR425
ADR420
ADR421
ADR423
10
100
1k
10k
100k
02432-037
FRE
QUENC
Y (Hz)
OUT
PUT I
MP
EDANCE (
Ω
)
50
45
40
35
30
25
20
15
10
5
0
Figure 36. Output Im
pedance vs. Fr
equency
10
100
10k
1k
100k
1M
02432-038
FRE
QUENC
Y (Hz)
RIPP
LE RE
JECT
IO
N (d
B)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
Figure 37. Ripple Reject
ion vs. Freque
ncy
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P21
P22-P24
ADR425ARZ
Mfr. #:
Buy ADR425ARZ
Manufacturer:
Analog Devices Inc.
Description:
Voltage References Low Noise 5.00V Ultraprecision
Lifecycle:
New from this manufacturer.
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