Nxp B.v.

Nxp Usa, Inc.

Siamak Delshadpour

Xu Zhang

Xiaoqun Liu

Xueyang Geng

Ahmad Yazdi

Abhijeet Chandrakant Kulkarni

Steven Daniel

Kenneth Jaramillo

David Edward Bien

Ahmad Dashtestani

Ranjeet Kumar Gupta

Chiahung Su

Soon-Gil Jung

Madan Mohan Reddy Vemula

Peter Christiaans

Harold Garth Hanson

Krishnan Tiruchi Natarajan

Anu Mathew

Sivakumar Reddy Papadasu

Tong Liu

Samuel Michael Palermo

Cornelis Johannes Speelman

Hans De Kuyper

Ronald Dean Smith

Klaus Reimann

Amrita Deshpande

Dolphin Abessolo Bidzo

Chandra Prakash Tiwari

Guido Wouter Willem Quax

Madan Vemula

Brad Gunter

Mahmoud Mohamed Amin El Sabbagh

Mona Ganji

Allen Yu-feng Tung

Peng Yan

Regis Santonja

Gaurav Sharma

Alexander Wayne Sheldon

Stefan Kwaaitaal

Abjijeet Chandrakant Kulkarni

One example discloses s passive equalizer circuit, including: an input configured to receive an input signal having an input frequency band; a transfer function circuit configured to transform the input frequency band into an output frequency band; and an output configured to be coupled to an active equalizer circuit and carry an output signal having the output frequency band; wherein the transfer function circuit includes a variable impedance configured to adjust a mid-band frequency gain of the output signal.

Passive equalizer

Embodiments of linear transmitter (TX) drivers are disclosed. In an embodiment, a linear TX driver includes a first transistor connectable between an input voltage and a supply voltage, a second transistor connectable between an inverted version of the input voltage and a reference voltage, a first resistor connected between the first transistor and the second transistor, where an output voltage is outputted from a node between the first resistor and the second transistor, and a second resistor connectable between the second transistor and the reference voltage.

Low-current high-linearity linear transmitter driver

One example discloses a communications device, including: an interface port, configured to couple the communications device to another device; a transmitter configured to transmit signals on the interface port; a receiver configured to receive signals on the interface port; and a switch configured to short the interface port to a reference potential after the transmitter transmits signals on the interface port.

Communications device

One example discloses a sensor calibration circuit, including: a controller configured to transmit a first modulation signal to the sensor and receive a first output signal from the sensor in response; wherein the controller configured to transmit a second modulation signal to the sensor and receive a second output signal from the sensor in response; and wherein the controller is configured to calibrate the sensor based on the first and second modulation signals and the first and second output signals.

Sensor calibration circuit

Embodiments of bidirectional repeaters and communications systems are disclosed. In an embodiment, a bidirectional repeater includes a digital state machine configured to control the bidirectional repeater to operate under a functional mode or under a bypass mode and a bypass mode driver configured to automatically detect a direction of signal through input/output (I/O) terminals of the bidirectional repeater and to allow a signal to pass through the bidirectional repeater based on the direction of signal under the bypass mode.

Bidirectional bypass mode

Embodiments of redrivers and resistive termination units for redrivers are disclosed. In an embodiment, a resistive termination unit for a redriver includes a resistor connected to an input/output terminal of the redriver, a first switch connected to the resistor and to a supply voltage of the redriver, a second switch connected to the first switch and configured to be turned on or off in response to a change in the supply voltage of the redriver, and a control circuit connected to the first switch through the second switch and configured to generate a control signal for the first switch.

Redriver and resistive termination unit for a redriver

Embodiments of equalizers are disclosed. In an embodiment, an equalizer includes a first signal path segment that includes a first plurality of serially connected transistors and current sources, a second signal path segment that includes a second plurality of serially connected transistors and current sources, and at least one termination resistor connected to the first and second signal path segments. The first plurality of serially connected transistors and current sources includes a first current source and a second current source connectable to a reference voltage and a first transistor and a second transistor connected between input terminals of the equalizer and the first and second current sources, where the first signal path segment further includes at least one resistor connected between the first and second current sources.

Two-dimensional high-speed equalizer with programmable direct current (DC) and peaking gains

One example discloses a power application circuit, including: a first power application circuit, configured to receive an enable signal and a first voltage; wherein the first power application circuit is configured to output the first voltage at a first current after a first delay from when the enable signal is received; and a second power application circuit, configured to receive the enable signal and a second voltage; wherein the second power application circuit is configured to output the second voltage at a second current after a second delay from when the enable signal is received.

Power application circuit

Embodiments of level shifters are disclosed. In an embodiment, a level shifter includes a transistor connected between an input terminal of the level shifter and an output terminal of the level shifter, a first resistor connected between a first terminal of the transistor and one of the input terminal of the level shifter and the output terminal of the level shifter, a capacitor connected between the input terminal of the level shifter and the output terminal of the level shifter, a current source connected between the output terminal of the level shifter and a fixed voltage, and a resistor divider connected between the first resistor and the output terminal of the level shifter.

High-speed wide-band low-power level shifter for high-speed applications

One example discloses a level-shifter circuit, comprising: a pre-driver stage configured to receive differential inputs and generate differential pre-driver outputs; a first output stage coupled to receive the differential pre-driver outputs and generate a single-ended first stage output; a second output stage coupled to receive the differential pre-driver outputs and generate a single-ended second stage output; and wherein the first and second stage outputs together form a differential output.

Level-shifter

One example discloses a signal driver circuit, including: an input configured to receive an input signal; an output configured to transmit an output signal; a low drop-out voltage regulator (LDO) having a regulated voltage output; a set of voltage-modulated amplifiers having a first input coupled to the regulated voltage output, and a second input configured to receive the input signal; wherein the voltage-modulated amplifier is configured to amplify the input signal and transmit an amplified input signal on the output of the signal driver circuit; a de-emphasis controller, including a set of de-emphasis levels; wherein the de-emphasis controller is configured to selectively switch-on a first subset of the set of voltage-modulated amplifiers and switch-off a second subset of the set of voltage-modulated amplifiers based on the de-emphasis levels.

Signal driver circuit

Various embodiments relate to an adaptive linear driver, including: a continuous time linear equalizer (CTLE); a programmable transmit driver coupled with an output of the CTLE, wherein the transmit driver includes a first control port configured to receive a first control signal configured to adjust the output level of the programmable transmit driver; an output comparator coupled to an output of the programmable transmit driver, wherein the output comparator is configured to compare the output of the programmable transmit driver with a reference signal and to produce a first comparison signal; and a controller coupled to the output comparator and the first control port, wherein the controller produces a first control signal based upon the first comparison signal.

Adaptive linear drivers

One example discloses a differential-signal-detection circuit, comprising: an input stage configured to receive a differential input signal and to output a first differential output signal and a second differential output signal; a first comparator coupled to receive the first differential output signal and generate a first comparator output signal; a second comparator coupled to receive the second differential output signal and generate a second comparator output signal; and an output stage configured to receive the first and second comparator output signals and generate a differential-signal-detection signal.

Differential-signal-detection circuit

Embodiments of methods of communications, communications devices, and redrivers are disclosed. In an embodiment, a method of communications involves enabling a Loss of Signal (LOS) detector and a Low Frequency Periodic Signaling (LFPS) detector connected to a communications channel, using a digital logic circuit, combining an output of the LOS detector and an output of the LFPS detector to generate a combined LFPS output, and outputting the combined LFPS output and the output of the LOS detector to control data communications through the communications channel.

Communications device and method of communications

A redriver includes a plurality of channels coupled to an interface, a number of detectors coupled to the plurality of channels, and a controller that determines an orientation of the interface based on states detected by the number of detectors. The controller determines that the interface is in a first orientation when a first combination of states is detected for the plurality of channels, and determines that the interface is in a second orientation when a second combination of states is detected for the plurality of channels.

Growing community of inventors

Phoenix, AZ, United States of America

Siamak Delshadpour