HCPL788J Datasheet, PDF (10/20 Pages) Agilent(Hewlett-Packard) – Isolation Amplifier with Short Circuit and Overload Detection

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-40 -20 0 20 40 60 80
TEMPERATURE – °C
Figure 12. Bandwidth vs.
Temperature.
3.5
3.25
3.0
2.75
2.5
-40 -20 0 20 40 60 80
TEMPERATURE – °C
Figure 13. FAULT Detection Delay vs.
Temperature.
300 mV
0 mV
-300 mV
5V
2.5 V
0V
5V
2.5 V
0V
5V
2.5 V
0V
V_IN 300 mV/D
V_OUT (PIN 12) 2.5 V/D
ABSVAL (PIN 13)
2.5 V/D
FAULT (PIN 14) 2.5 V/D
5.00 µs/DIV
Figure 14. Step Response, 0 to 200 mV
Input, at V_REF = 5 V.
300 mV
0 mV
-300 mV
5V
2.5 V
0V
5V
2.5 V
0V
5V
2.5 V
0V
V_IN 300 mV/D
V_OUT (PIN 12)
2.5 V/D
ABSVAL (PIN 13)
2.5 V/D
FAULT (PIN 14) 2.5 V/D
5.00 µs/DIV
Figure 15. FAULT Detection, 0 to
300 mV Input, at V_REF = 5 V.
300 mV
0 mV
-300 mV
5V
2.5 V
0V
5V
2.5 V
0V
5V
2.5 V
0V
V_IN 300 mV/D
V_OUT (PIN 12) 2.5 V/D
ABSVAL (PIN 13)
2.5 V/D
FAULT (PIN 14)
2.5 V/D
5.00 µs/DIV
Figure 16. FAULT Release, 300 to
0 mV Input, at V_REF = 5 V.
300 mV
0 mV
-300 mV
5V
2.5 V
0V
5V
2.5 V
0V
5V
2.5 V
0V
V_IN 300 mV/D
V_OUT (PIN 12) 2.5 V/D
ABSVAL (PIN 13) 2.5 V/D
FAULT (PIN 14) 2.5 V/D
5.00 µs/DIV
Figure 17. FAULT Rejecting a 1 µs, 0
to 2 V to 0 Input. Rejection is
Independent of Amplitude.
2V
0 mV
-2 V
5.0 V
2.5 V
0V
5.0 V
2.5 V
0V
5.0 V
2.5 V
0V
V_IN 2.0 V/D
V_OUT (PIN 12) 2.5 V/D
ABSVAL (PIN 13)
2.5 V/D
FAULT
(PIN 14)
2.5 V/D
5.00 µs/DIV
Figure 18. Detection of 6 µs Fault 0 to
2 V to 0 Input, at V_REF = 5 V.
300 mV
0 mV
-300 mV
5V
2.5 V
0V
5V
2.5 V
0V
5V
2.5 V
0V
V_IN 300 mV/D
V_OUT (PIN 12) 2.5 V/D
ABSVAL (PIN 13) 2.5 V/D
FAULT (PIN 14) 2.5 V/D
100 µs/DIV
Figure 19. Sine Response 400 mV pk to
pk 4 kHz Input, at V_REF = 5 V.