HCPL-7820 Datasheet, PDF (11/15 Pages) Agilent(Hewlett-Packard) – High CMR Analog Isolation Amplifiers

10 K
12
T_A = 100°C
V_DD1 = 5 V
T_A = 25°C
V_DD2 = 5 V
T_A = -40°C
V_IN– = 0 V
11
10
9
8
-0.4
-0.2
0
0.2
0.4
V_IN+ – INPUT VOLTAGE – V
78L05
IN OUT
0.1
0.1
µF
µF
9V
V_DD2
1
8
2
7
HCPL-7820/7825
3
6
0.1 µF
2K
2K
75 pF
+15 V
0.1 µF
–
+ _MC34081
4
5
PULSE GEN.
+
–
V_IM
10 K
75
pF
0.1 µF
-15 V
Figure 15. Output Supply Current vs.
Input Voltage.
Figure 16. Isolation Mode Rejection Test Circuit.
10 K
V_OUT
V_DD1
V_DD2
0.1 µF
V_IN
0.01 µF
1
8
2
7
HCPL-7820/7825
3
6
0.1 µF
2K
2K
+15 V
0.1 µF
–
+ _MC34081
4
5
0.1 µF
10 K
-15 V
V_OUT
3.0
2.5
2.0 ^VDD1 ^{= 5 V}
V_DD2 = 5 V
DELAY TO 90%
DELAY TO 50%
RISE/FALL TIME
1.5
1.0
-40 -20
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
-1
V_DD1 = 5 V
V_DD2 = 5 V
T_A = 25 °C
-2
-3
-4
1
5 10
50 100
500
f – FREQUENCY – kHz
260
250
240
230
220
210
V_DD1 = 5 V
V_DD2 = 5 V
200
190
-40 -20 0 20 40 60 80 100
T_A – TEMPERATURE – °C
3.0
V_IN+ = 200 mV
2.5
V_IN+ = 100 mV
V_IN+ = 0 mV
2.0 ^{VDD1 = 5 V}
V_DD2 = 5 V
V_IN– = 0 V
1.5 T_A = 25 °C
1.0
0.5
0
5 10
50 100
500 1000
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