AD1582/AD1583/AD1584/AD1585

Data Sheet

Rev. J | Page 14 of 16

10

0%

100

5V

1V

20µs

20µs

90

Figure 22. Turn-On Characteristics

10

0%

100

5V

1mV

20µs

20µs

90

Figure 23. Turn-On Settling

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.

10

0%

100

90

5V

200mV

50µs

50µs

Figure 24. Line Transient Response

10

0%

100

5V

5mV

90

20µs

20µs

Figure 25. Load Transient Response (0 mA to 5 mA Load)

0%

100

90

5V

20µs

20µs

5mV

10

Figure 26. Load Transient Response (0 mA to −1 mA Load)