Rpi-303, Sensors, Fig.7 response time vs. collector current – Rainbow Electronics RPI-303 User Manual
Page 3: Fig.8 forward current falloff, Fig.9 output characteristics, Fig.10 response time measurement circuit
RPI-303
Sensors
COLLECTOR CURRENT : I
C
(mA)
0.1
1
10
100
1
10
100
1000
RELATIVE TIME : t
r
, t
f
(
µ
s)
V
CC
=
5V
Ta
=
25
°
C
Fig.7 Response time vs.
collector current
R
L
=
1k
Ω
R
L
=
500
Ω
R
L
=
100
Ω
−
20
0
20
40
60
80
100
10
50
40
30
20
0
AMBIENT TEMPERATURE : Ta (
°
C)
FORWARD CURRENT : I
F
(mA)
Fig.8 Forward current falloff
COLLECTOR CURRENT : I
C
(mA)
COLLECTOR-EMITTER VOLTAGE : V
CE
(
V)
Fig.9 Output characteristics
0
1
2
3
4
5
2
0
4
6
10
8
40mA
30mA
20mA
10mA
I
F
=50mA
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)
Fig.10 Response time measurement circuit
t
d
t
r
t
f
10%
90%
R
L
V
CC
Input
Input
Output
Output