Cisco Technology, Inc.

Richard Van Hoesen Booth

Kadaba Lakshmikumar

Alexander Christopher Kurylak

Manohar Bhavsar Nagaraju

Romesh Kumar Nandwana

Pavan Kumar Hanumolu

Bibhu Prasad Das

An apparatus includes a delta-sigma modulator digital-to-analog converter section having a multiple stag cascaded error cancellation architecture, each stage including a delta-sigma modulator followed by a digital-to-analog converter, the delta-sigma modulator digital-to-analog converter section configured to receive a digital input and to generate an analog output. An inverting amplifier-based analog filter is coupled to receive the analog output, the inverting amplifier-based analog filter configured to filter the analog output to produce a filtered analog output.

Error cancellation delta-sigma DAC with an inverting amplifier-based filter

A circuit includes a front end section configured to receive input current signals; a programmable gain amplifier section coupled to the front end section, the programmable gain amplifier section including a plurality of inverters connected in series without a resistor disposed therebetween; and an output buffer section coupled to the programmable gain amplifier section and configured to output voltage signals.

Process and temperature insensitive linear circuit

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Richard Van Hoesen Booth