AD588TQ Analog Devices, AD588TQ Datasheet - Page 9

• Manufacturer Part Number: AD588TQ
• Description: High Precision Voltage Reference
• Manufacturer: Analog Devices

Figures 16a and 16b display the output amplifier characteristics
driving a 5 mA to 10 mA load, a common situation found when
the reference is shared among multiple converters or is used to
provide a bipolar offset current.
In some applications, a varying load may be both resistive and
capacitive in nature or be connected to the AD588 by a long
capacitive cable.
Figures 17a and 17b display the output amplifier characteristics
driving a 1,000 pF, 0 mA to 10 mA load.
REV. D
Figure 16a. Transient and Constant Load Test Circuit
Figure 16b. Transient Response 5 mA to10 mA Load
Figure 17a. Capacitive Load Transient Response
Test Circuit
Figure 15b. Large-Scale Transient Response
10V
10V
+
–
A3 OR A4
A3 OR A4
1000pF
C
V
I
L
L
L
2k
10V
0V
V
L
1k
2k
10V
0V
V
V
OUT
OUT
–9–
Figures 18a and 18b display the crosstalk between output am-
plifiers. The top trace shows the output of A4, dc-coupled and
offset by 10 V, while the output of A3 is subjected to a 0 mA
to 10 mA load current step. The transient at A4 settles in about
1 µs, and the load-induced offset is about 100 µV.
Figure 17b. Output Response with Capacitive Load
Figure 18a. Load Crosstalk Test Circuit
+
–
10V
Figure 18b. Load Crosstalk
A4
V
OUT
V
L
1k
10V
0V
A3
10V
AD588
+
–