ad1582crt-reel7 Analog Devices, Inc., ad1582crt-reel7 Datasheet - Page 14

• Manufacturer Part Number: ad1582crt-reel7
• Description: 2.5 V To 5.0 V Micropower, Precision Series Mode Voltage References
• Manufacturer: Analog Devices, Inc.

AD1582/AD1583/AD1584/AD1585
DYNAMIC PERFORMANCE
Many ADCs and DACs present transient current loads to the
reference and poor reference response can degrade converter
performance. The AD1582/AD1583/AD1584/AD1585 provide
superior static and dynamic line and load regulation. Because
these series references are capable of both sourcing and sinking
large current loads, they exhibit excellent settling charac-
teristics.
Figure 24 displays the line transient response for the AD1582/
AD1583/AD1584/AD1585. The circuit used to perform such
a measurement is shown in Figure 21, where the input supply
voltage is toggled from 5 V to 10 V, and the input and output
capacitors are each 0.22 μF.
Figure 25 and Figure 26 show the load transient settling cha-
racteristics for the AD1582/AD1583/AD1584/AD1585 when
load current steps of 0 mA to +5 mA and 0 mA to −1 mA are
applied. The input supply voltage remains constant at 5 V; the
input decoupling and output load capacitors are 4.7 μF and 1 μF,
respectively; and the output current is toggled. For both positive
and negative current loads, the reference responses settle very
quickly and exhibit initial voltage spikes of less than 10 mV.
100
100
90
0%
0%
10
90
10
Figure 22. Turn-On Characteristics
5V
1V
5V
1mV
Figure 23. Turn-On Settling
20µs
20µs
20µs
20µs
Rev. H | Page 14 of 16
100
100
100
90
10
0%
0%
0%
90
90
10
10
Figure 26. Load Transient Response (0 mA to −1 mA Load)
Figure 25. Load Transient Response (0 mA to 5 mA Load)
5V
5mV
5V
Figure 24. Line Transient Response
5V
200mV
5mV
20µs
20µs
20µs
20µs
50µs
50µs