Datasheet

AD5757 Data Sheet
Rev. D | Page 20 of 44
REFERENCE
16
14
12
10
8
6
4
2
0
–2
0 0.2 0.4 0.6 0.8 1.0 1.2
VOLTAGE (V)
TIME (ms)
AV
DD
REF
OUT
T
A
= 25°C
09225-010
Figure 38. REFOUT Turn-On Transient
4
3
2
1
0
–1
–2
–3
0 2 4 6 8 10
REFOUT (µV)
TIME (s)
AV
DD
= 15V
T
A
= 25°C
09225-011
Figure 39. REFOUT Output Noise (0.1 Hz to 10 Hz Bandwidth)
150
100
50
0
–50
–100
–150
0 5 10 15 20
REFOUT (µV)
TIME (ms)
AV
DD
= 15V
T
A
= 25°C
09225-012
Figure 40. REFOUT Output Noise (100 kHz Bandwidth)
5.0000
5.0005
5.0010
5.0015
5.0020
5.0025
5.0030
5.0035
5.0040
5.0045
5.0050
–40
–20 0
20
40
60
80
100
REFOUT (V)
TEMPERATURE (°C)
30 DEVICES SHOWN
AV
DD
= 15V
09225-163
Figure 41. REFOUT vs. Temperature (When the AD5757 is soldered onto a
PCB, the reference shifts due to thermal shock on the package. The average
output voltage shift is –4 mV. Measurement of these parts after seven days
shows that the outputs typically shift back 2 mV toward their initial values.
This second shift is due to the relaxation of stress incurred during soldering.)
5.002
5.001
5.000
4.999
4.998
4.997
4.996
4.995
0
2 4
6 8
10
REFOUT (V)
LOAD CURRENT (mA)
A
V
DD
= 15V
T
A
= 25°C
09225-014
Figure 42. REFOUT vs. Load Current
5.00000
4.99995
4.99990
4.99980
4.99985
4.99975
4.99970
4.99965
4.99960
10 15 20 25 30
REFOUT (V)
AV
DD
(V)
T
A
= 25°C
09225-015
Figure 43. REFOUT vs. Supply