10 K
75 pF
V
DD2
78L05
+15 V
0.1 µF
IN OUT
1
2
8
7
12
11
0.1
µF
0.1
µF
T
T
T
= 100°C
= 25°C
= -40°C
V
V
V
= 5 V
= 5 V
= 0 V
0.1 µF
A
A
A
DD1
DD2
IN–
2 K
2 K
–
V
HCPL-7820/7825
OUT
9 V
+
6
5
3
4
MC34081
0.1 µF
10
9
10 K
75
pF
PULSE GEN.
-15 V
8
-0.4
-0.2
0
0.2
0.4
–
+
V
V
– INPUT VOLTAGE – V
IM
IN+
Figure 15. Output Supply Current vs.
Input Voltage.
Figure 16. Isolation Mode Rejection Test Circuit.
10 K
V
V
DD2
DD1
+15 V
3.0
2.5
0.1 µF
1
2
8
7
0.1 µF
0.1 µF
DELAY TO 90%
DELAY TO 50%
RISE/FALL TIME
2 K
2 K
V
IN
–
V
V
= 5 V
= 5 V
DD1
DD2
2.0
1.5
1.0
V
HCPL-7820/7825
OUT
+
6
5
3
4
MC34081
0.1 µF
0.01 µF
V
= 0 V
10 K
IN–
IN+
V
= 0 TO 100 mV STEP
60 80 100
– TEMPERATURE – °C
-40 -20
0
20 40
-15 V
T
A
Figure 17. Propagation Delay, Rise/Fall Time and Bandwidth Test Circuit.
Figure 18. Propagation Delays and
Rise/Fall Time vs. Temperature.
0
260
3.0
V
V
V
= 200 mV
= 100 mV
= 0 mV
IN+
IN+
IN+
250
240
230
220
210
2.5
2.0
-1
V
V
T
= 5 V
= 5 V
= 25 °C
V
V
V
T
= 5 V
= 5 V
= 0 V
DD1
DD2
A
DD1
DD2
IN–
= 25 °C
-2
-3
-4
1.5
1.0
0.5
0
A
V
V
= 5 V
= 5 V
DD1
DD2
200
190
1
5
10
50 100
500
-40 -20
0
20 40
60 80 100
5
10
50 100
f – FREQUENCY – kHz
500 1000
f – FREQUENCY – kHz
T
– TEMPERATURE – °C
A
Figure 19. Amplitude Response vs.
Frequency.
Figure 21. RMS Input-Referred Noise
vs. Recommended Application Circuit
Bandwidth.
Figure 20. 3 dB Bandwidth vs.
Temperature.
1-243
HP [ HEWLETT-PACKARD ]
