+VS
+VS
100µA
100µA
VO = 100µV
OPA602
VO = 1V
1Ω
0.01µF
10kΩ
FIGURE 21. Low-Voltage Reference.
FIGURE 22. Voltage Reference.
VO
+10
+7.5V (R = 75kΩ)
+5V (R = 50kΩ)
+2.5V (R = 25kΩ)
1kΩ
+5
100µF
VO
OPA121
–10
–5
+5
+10
VI
OPA121
VI
100µA
–2.5V (R = 25kΩ)
+5V (R = 50kΩ)
+7.5V (R = 75kΩ)
R
with bridge
(See Figure 2)
–5
(50kΩ)
VO = VI (–5V < VI < 5V)
VO = 5V (VI > 5V)
VO = –5V (VI < –5V)
(Bound = 100µA • R)
–10
FIGURE 23. Bipolar Limiting Circuit.
VO
1kΩ
+10
+7.5V (R = 75kΩ)
+5V (R = 50kΩ)
+2.5V (R = 25kΩ)
100µF
+5
VO
OPA121
1N4148
–10
–5
+5
+10
VI
OPA121
VI
–5
R
100µA
VO = VI (VI < 5V)
VO = 5V (VI > 5V)
(VLIMIT = 100µA • R)
(50kΩ)
–10
FIGURE 24. Limiting Circuit.
®
14
REF200
BB [ BURR-BROWN CORPORATION ]
