Data Sheet

AD1582/AD1583/AD1584/AD1585

Rev. M | Page 15 of 17

0.22µF

0.22µF

0V OR 10V

0V TO 10V

10kΩ

10kΩ

DUT

VOUT

5V OR 10V

0V OR 5V

Figure 22. Turn-On/Transient Response Test Circuit

10

0%

100

5V

1V

20µs

20µs

90

Figure 23. Turn-On Characteristics

10

0%

100

5V

1mV

20µs

20µs

90

Figure 24. 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 characteristics.

Figure 25 displays the line transient response for the AD1582/

AD1583/AD1584/AD1585. The circuit used to perform such

a measurement is shown in Figure 22, 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 26 and Figure 27 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 25. Line Transient Response

10

0%

100

5V

5mV

90

20µs

20µs

Figure 26. Load Transient Response (0 mA to 5 mA Load)

0%

100

90

5V

20µs

20µs

5mV

10

Figure 27. Load Transient Response (0 mA to −1 mA Load)