Rpi-576, Sensors, Fig.7 response time vs. output current – Rainbow Electronics RPI-576 User Manual
Page 3: Fig.8 forward current falloff, Fig.10 response time measurement circuit
RPI-576
Sensors
COLLECTOR CURRENT I
C
(
µ
A)
10
50
100
20
500 1000
200
2000
10
20
50
200
100
RESPONSE TIME: t
r
, t
f
(
µ
s)
Fig.7 Response time vs. output current
R
L
=
5k
Ω
R
L
=
1k
Ω
R
L
=
2k
Ω
t
r
t
f
t
r
t
f
t
f
t
r
-20
0
20
40
60
80
100
10
40
30
20
0
AMBIENT TEMPERATURE : Ta (
°
C)
FORWARD CURRENT : I
F
(mA)
Fig.8 Forward current falloff
COLLECTOR CURRENT : I
C
(mA)
4
8
6
10
2
0
0
3.0
2.0
1.0
5mA
10mA
15mA
20mA
I
F
=
25mA
Fig.9 Collector current vs.
collector-emitter voltage
COLLECTOR-EMITTER VOLTAGE : V
CE
(V)
Fig.10 Response time measurement circuit
t
d
:
t
r
:
t
f
:
Delay time
Rise time (time for output current to rise
from 10% to 90% of peak current)
Fall time (time for output current to fall
from 90% to 10% of peak current)
Input
Input
Output
Output
t
d
t
r
t
f
10%
90%
R
L
V
CC