Datasheet

OPA569
SBOS264A
21
www.ti.com
1MΩ
OPT101
(4)
5
4
3pF
R
1
10kΩ
R
2
10kΩ
OPA569
C
1
3.3nF
+5V
REF3025
LED
Luxeon
Star –0
High
Power
LED
+5V
3
2
1
12,
13
3
17,
18
19
+2.5V +0.5V
NOTE: (1) Bypass as recommended.
(2) R
SET
establishes current limit.
(3) R
MONITOR
used to measure LED current.
(4) OPT101 Pin Numbers for DIP Package.
R
3
2.5kΩ
C
2
0.01µF
LED
OPT101
Glass Microscope Slide
Approximately
92% light
available for application.
Optical Calibration
≈ 8%
V B
8pF
PD
2 1
5
(1)
6
14,
15
38
R
SET
(2)
R
MONITOR
(3)
FIGURE 22. Power Booster for Precision Op Amp.
FIGURE 23. LED Output Regulation Circuit for Constant Optical Power.
R
L
2A max
6
7
4
2
3
1kΩ
V
IN
OPA335
+5V
(1)
14,
15
12,
13
17,
18
5
6
OPA569
+5V
(1)
1kΩ
NOTE: (1) Bypass as recommended.