OP400ATC Datasheet, PDF (13/16 Pages) Analog Devices – Quad Low Offset, Low Power Operational Amplifier

Data Sheet
OP400
MULTIPLE OUTPUT TRACKING VOLTAGE
REFERENCE
Figure 34 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
22kΩ
1N4002
10kΩ
+
1/4
OP400A
7.5V
1μF
–
2
10kΩ
REF 43
6 ^10kΩ
10kΩ
2.5V
+
REFERENCE
1/4
4
OP400A
+
1/4
–
OP400A
5V
10kΩ
2μF
10kΩ
–
10kΩ
+
1/4
OP400A
2.5V
–
1μF
Figure 34. Multiple Output Tracking Voltage Reference
Rev. H | Page 13 of 16