Diagnose interface for a non-isolated sensor

Details Diagnose interface for a non-isolated sensor Diagnose interface for a non-isolated sensor

2006-06-06

2006-06-06

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S308000

Reexamination Certificate

active

07057424

ABSTRACT:
A circuit arrangement for coupling with a sensor having two output terminals is disclosed wherein one terminal is coupled to a first ground and the circuit arrangement is coupled with a second ground. The circuit arrangement comprises an attenuator coupled with the output terminals of the sensor, first and second buffers coupled with the attenuator to generate respective output signals, a differential amplifier receiving the output signals of the buffers, and a current source generating a bias current which is fed to the input terminal not coupled with ground.

REFERENCES:
patent: 5187674 (1993-02-01), Bonne
National Semiconductor; LM9040 Dual Lambda Sensor Interface Amplifier; Aug. 1995.

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