Texas Instruments Corporation

Burak Kelleci

Lars Risbo

Rahmi Hezar

Charles Guo Lin

Halil Kiper

Yuanying Deng

Anker Bjoern-Josefsen

A signal converting system is described that has a multi-segment digital to analog converter coupled to one or more error shaping loops. Each error shaping loop includes a quantizer with a feedback loop configured to generate a control signal responsive to a stream of symbols and to an error signal. Each error shaping loop also includes an inter-symbol-interference (ISI) shaping loop coupled to receive the control signal and to produce an ISI portion of the error signal that is responsive to inter-symbol transition rate.

Shaping inter-symbol-interference in sigma delta converter

A low noise amplifier in an integrated circuit, the circuit having a digital portion and an analog portion on a common substrate, the digital portion having at least one clocking frequency, includes an input configured to receive a signal at a tuned frequency and an output circuit. The output circuit is configurable to operate in either a single-ended mode or a pseudo differential-ended mode, wherein the output circuit is configured in the pseudo differential-ended mode when the tuned frequency is substantially similar to the at least one clocking frequency or one of its harmonics and otherwise configured in the single-ended mode.

Receiver dynamically switching to pseudo differential mode for SOC spur reduction

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Plano, TX, United States of America

Burak Kelleci