HCPL-7510 Datasheet, PDF (16/16 Pages) Agilent(Hewlett-Packard) – Isolated Linear Sensing IC

4. ACCURACY
4.1: Does the gain change if the internal LED light output degrades with time?
No. The LED is used only to transmit a digital pattern. Agilent has accounted for LED degradation
in the design of the product to ensure long life.
5. MISCELLANEOUS
5.1: How does the HCPL-7510 measure negative signals with only a +5 V supply?
The inputs have a series resistor for protection against large negative inputs. Normal signals are
no more than 200 mV in amplitude. Such signals do not forward bias any junctions sufficiently to
interfere with accurate operation of the switched capacitor input circuit.
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Data subject to change.
Copyright © 2005 Agilent Technologies, Inc.
February 2, 2005
obsoletes 5989-0317EN
5989-2162EN