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OP400_07 Datasheet, PDF (13/16 Pages) Analog Devices – Quad Low Offset, Low Power Operational Amplifier | |||
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OP400
MULTIPLE OUTPUT TRACKING VOLTAGE
REFERENCE
Figure 33 shows a circuit that provides outputs of 10 V, 7.5 V, 5 V,
and 2.5 V for use as a system voltage reference. Maximum
output current from each reference is 5 mA with load regulation
under 25 μV/mA. Line regulation is better than 15 μV/V,
and output voltage drift is under 20 μV/°C. Output voltage
noise from 0.1 Hz to 10 Hz is typically 75 μV p-p from the
10 V output and proportionately less from the 7.5 V, 5 V, and
2.5 V outputs.
15V
10V
22kâ¦
1N4002
10kâ¦
+
1/4
OP400A
7.5V
1μF
â
2
10kâ¦
REF 43
6 10kâ¦
10kâ¦
2.5V
+
REFERENCE
1/4
4
OP400A
+
1/4
â
OP400A
5V
10kâ¦
2μF
10kâ¦
â
10kâ¦
+
1/4
OP400A
2.5V
â
1μF
Figure 33. Multiple Output Tracking Voltage Reference
Rev. E | Page 13 of 16
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