Datasheet

®
REF200
12
FIGURE 17. Rate Limiter.
FIGURE 16. Floating 300µA and 400µA Cascoded Current Sources.
FIGURE 18. 25mA Floating Current Source.
27kΩ
In Out
Mirror
Com
20kΩ
0.01µF
0.01µF
100µA
100µA
High
300µA
2N5116
2N4340
5 4
3
300µA
Low
(a) Regulation (15V to 30V = 0.00003%/V (10G(a) Regulation (15V to 30V = 0.00003%/V (10GΩ)
In Out
Mirror
Com
20kΩ
0.01µF
100µA
High
400µA
2N5116
2N4340
5 4
3
400µA
Low
(a) Regulation (15V to 30V = 0.000025%/V (10G(a) Regulation (15V to 30V = 0.000025%/V (10GΩ)
100µA
100Ω
100Ω
100Ω
100Ω
40.2Ω10kΩ
Low
–V
100µA
High
25mA
Compliance
4V to 30V
NOTE: Each amplifier 1/4 LM324.
Op amp power supplies are derived
within the circuitry, and this quiescent
current is included in the 25mA.
S
+V
S
10kΩ
10kΩ
OPA602
C
100µA
–V
S
+V
S
V = –V
I
100µA
V
I
V Rate Limit = 100µA/C
O
Diodes: 1N4148
or PWS740-3
Diode Bridge for
reduced V .
OS
O