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US 10,871,757 B2Granted
Binary digital input module having comparator and isolated output
AssigneeTexas Instruments Incorporated
InventorsSreenivasa Muniyappa Kallikuppa, Amit G. Kumbasi, Prasanna Udupi Rajagopal
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Abstract
A binary/digital input module implemented on an integrated circuit (IC) chip has a plurality of input channels and includes, for each input channel, a comparator coupled to receive a scaled input voltage and a scaled threshold voltage and further coupled to provide an output value and a digital isolation circuit for data coupled between the comparator and a respective output pin to provide the output value across an isolation barrier.
Claims19
An integrated circuit comprising:
- (a) a status monitoring region including:
- (i) a selection circuit having range selection input pins, having threshold selection input pins, having a range selection output, a threshold selection output, and having a scaled threshold voltage output;
- (ii) an input voltage circuit including an input channel having a differential pair of input pins, having a range selection input coupled to the range selection output, having an input coupled to the threshold selection output, and having a scaled input voltage output;
- (iii) a comparator circuit having an input coupled to the scaled input voltage output, having an input coupled to the scaled threshold voltage output, and having a comparator output;
- (b) a data isolation circuit having an input coupled to the comparator output and having an isolation output;
- and
- (c) a host side region having a host side input coupled to the isolation output and a host side output pin.
4 more elements
Dependencies are inferred from the claim text.