V
1
2
8
7
CM
0.1 µF
20 kΩ
V
δV
δt
CM
∆t
20 kΩ
I
F
=
+
OV
V
= 15 V
CC
–
A
B
∆t
3
4
6
5
V
OUT
100 pF*
V
O
V
V
CC
+
–
SWITCH AT A: I = 0 mA
SHIELD
F
V
FF
*100 pF TOTAL
CAPACITANCE
V
O
OL
SWITCH AT B: I = 10 mA
F
+
V
= 1500 V
CM
Figure 11. CMR Test Circuit. Typical CMR Waveform.
500
400
300
200
100
500
400
300
200
100
800
I
V
= 10 mA
F
I
V
= 10 mA
F
= 15 V
CC
= 15 V
CC
CL = 100 pF
RL = 20 kΩ
(INTERNAL)
I
V
= 10 mA
= 15 V
CL = 100 pF
RL = 20 kΩ (EXTERNAL)
F
CC
CL = 100 pF
= 25 °C
600
400
200
T
A
t
t
t
t
PLH
PHL
t
t
PLH
PHL
PLH
PHL
20
– TEMPERATURE – °C
20
T – TEMPERATURE – °C
A
20
RL – LOAD RESISTANCE – K Ω
-40 -20
0
40
60 80 100
-40 -20
0
40
60 80 100
0
10
30
40
50
T
A
Figure 12. Propagation Delay with
External 20 kΩ RL vs. Temperature.
Figure 13. Propagation Delay with
Internal 20 kΩ RL vs. Temperature.
Figure 14. Propagation Delay vs. Load
Resistance.
1400
500
1400
1200
1000
800
I
V
= 10 mA
= 15 V
I
= 10 mA
V
= 15 V
CC
F
F
t
t
PLH
PHL
CL = 100 pF
RL = 20 kΩ
T
CL = 100 pF
RL = 20 kΩ
CC
RL = 20 kΩ
= 25°C
1200
1000
800
T
= 25°C
T = 25°C
A
A
400
300
200
100
A
t
t
t
t
PLH
PHL
PLH
PHL
600
600
400
400
200
0
200
0
0
100
200
300
400
500
5
10
15
20
25
30
0
5
10
15
20
CL – LOAD CAPACITANCE – pF
I
– FORWARD LED CURRENT – mA
V
– SUPPLY VOLTAGE – V
F
CC
Figure 15. Propagation Delay vs. Load
Capacitance.
Figure 16. Propagation Delay vs.
Supply Voltage.
Figure 17. Propagation Delay vs. Input
Current.
1-58
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
