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