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9042462 Differential signal transmission  
Transport of differential signals is provided. In one aspect, a telecommunications system includes a first unit and a second unit. The first unit can calculate a differential signal from an...
9041575 Analog-to-digital conversion apparatus and method capable of achieving fast settling  
A method utilized in an analog-to-digital conversion apparatus, for converting an analog input signal into a digital output signal including a first portion and a second portion, includes: using a...
9041574 Input converter for a hearing aid and signal conversion method  
In order to minimize noise and current consumption in a hearing aid, an input converter including a first voltage transformer and an analog-to-digital converter of the delta-sigma type for a...
9035814 Feedforward delta-sigma modulator  
A feedforward delta-sigma modulator includes a successive approximation analog-to-digital converter, a digital-to-analog converter, N integrators, a first adder, a second adder, and an...
9035813 Technique for excess loop delay compensation in delta-sigma modulators  
A technique for excess loop delay compensation in delta sigma modulator. The delta sigma modulator includes a loop filter. The loop filter receives an analog input signal and an output of a...
9035812 Method and apparatus for generating a band pass signal  
A modulator and a method are disclosed. The modulator is for generating a band pass signal and comprises: sigma delta modulation logic operable to receive an input signal and to perform at least a...
9030346 Method and apparatus for self-test of successive approximation register (SAR) A/D converter  
A single-ended SAR ADC includes an additional capacitor, a self-test engine, and independent control of sample and hold conditions, which allows for quick and accurate testing of the ADC.
9025793 Audio signal processing circuit  
A selector selects an analog audio signal input to one input port from among analog audio signals input to multiple input ports according to an instruction from the user. An analog gain control...
9024795 Continuous-time delta sigma modulator  
A continuous-time delta sigma modulator, having an integrator and a comparator clocked with a clock frequency that are connected in a feedback loop, having a voltage source that is connected to...
9019136 Sigma-delta modulators with high speed feed-forward architecture  
A sigma-delta modulator is provided for generating a digital output signal. The sigma-delta modulator is used to generate a digital output signal. The sigma-delta modulator includes a multi-stage...
9013338 Method, system and apparatus for dual mode operation of a converter  
Methods, systems and apparatuses for operating a converter or other circuits are disclosed. More particularly, in one embodiment a converter or other circuit can be operated in two modes which may...
9013342 Low-power sigma-delta converter  
A sigma-delta converter may include an input node, a switched capacitor input stage integrating a difference signal between an input signal from the input node and a feedback signal representing...
9013341 Noise shaping for digital pulse-width modulators  
A circuit including an analog-to-digital converter (ADC). The ADC is configured to receive an analog feedback signal and an analog input signal and generate a digital output. The circuit further...
9007242 Self-calibrated delta-sigma modulator and method thereof  
A delta-sigma modulator and corresponding method are disclosed. In one implementation, the delta-sigma modulator includes a multiplexer for receiving an analog input signal and a common mode...
9008193 Power line communication device that is resilient to cross-band interference  
A Power Line Communication (PLC) device that is resilient to cross-band interference. The PLC device is configured to communicate on AC power wiring in the frequency range of 9 kilohertz to 500...
9007247 Multi-bit sigma-delta modulator with reduced number of bits in feedback path  
A sigma-delta modulator for an ADC, passes an input signal to a loop filter, then to a multi-bit quantizer of the modulator. An output of the quantizer is passed to a digital filter, and a...
9007248 MASH sigma-delta modulator and DA converter circuit  
A MASH sigma-delta modulator includes: parallel integration units in M stages configured to receive N pieces of data from a previous stage, to perform integral calculation in parallel; parallel...
9007249 Amplifier, fully-differential amplifier and delta-sigma modulator  
An amplifier includes a front-end gain stage and an AC-coupled push-pull output stage. The AC-coupled push-pull output stage includes a first transistor, having a source, a drain and a gate,...
9000961 Arrangement for reading out an analogue voltage signal with self-calibration  
An arrangement for reading out an analog voltage input signal includes an input applying the input signal thereto, and a reference unit generating an analog reference voltage. To perform online...
9000967 Apparatuses and methods for linear to discrete quantization conversion with reduced sampling variation errors  
Provided is an apparatus for converting a continuous-time, continuously variable signal into a sampled and quantized signal, which includes an input line for accepting an input signal, multiple...
8988260 Method and circuit for continuous-time delta-sigma DAC with reduced noise  
A continuous-time delta-sigma digital-to-analog converter (DAC) includes a first delta-sigma modulator configured to quantize a most significant bit or bits of a digital input signal and produce a...
8988264 Analogue to digital converter  
An Analogue to Digital Converter (ADC) having a Gated Ring Voltage Controlled Oscillator, GRVCO, to generate a phase signal according to an input voltage; and a quantization circuit to generate a...
8988261 Delta-sigma D/A converter  
A delta-sigma D/A converter, by which a digital valued, input signal is convertible into a binary, clock signal time discrete, output signal. By forming an average value of the output signal over...
8988263 Successive approximation register (SAR) analog-to-digital converter (ADC) having optimized filter  
A system such as a mechanically tuned radio can have a signal path to receive and process an incoming radio frequency (RF) signal and to provide the processed signal to a first analog-to-digital...
8981978 Resonator and oversampling A/D converter  
Two resistive elements and a capacitive element are coupled between a first node and each of an inverting input terminal of an operational amplifier, an output terminal of the operational...
8975916 Self-modulated voltage reference  
A self-modulated voltage reference circuit may generate a reference voltage by receiving an internal reference voltage of a programmable device at a first input of a comparator block of the...
8970412 Signal quantization method and apparatus and sensor based thereon  
A signal quantizer includes a summing junction, a loop filter, a quantizer and a reconstruction filter. The summing junction is responsive to an input signal and to a modulated signal and is...
8970413 Low power analog-to-digital converter for sensing geophone signals  
A low power analog-to-digital converter (ADC) may sense current output of a geophone instead of voltage. The output of the geophone may be terminated through a resistor into a virtual ground of an...
8970411 Pipelined continuous-time sigma delta modulator  
Traditionally, pipelined continuous-time (CT) sigma-delta modulators (SDM) have been difficult to build due at least in part to the difficulties in calibrating the pipeline. Here, however, a...
8970416 4N+1 level capacitive DAC using N capacitors  
A digital-to analog converter (DAC) of the charge transfer type for use in a sigma delta modulator, includes a capacitor switch unit operable to generate a 4n+1 output levels, comprising: a...
8970415 Multi-level capacitive DAC  
A digital-to analog converter (DAC) of the charge transfer type can be used in a sigma delta modulator for generating N output levels, wherein an output level is defined by a respective amount of...
8970417 Method for generating a digital signal  
A method is provided for generating a digital signal (DS) from an analog signal (IA, UA) generated by a frequency converter on the basis of pulse width modulation, wherein the digital signal...
8970414 Tri-level digital-to-analog converter  
Methods, systems, and apparatuses for converting a digital input signal to an analog output signal are disclosed. A first delta-sigma modulator receives a common mode reference signal and...
8964860 Digital modulator  
To provide a digital modulator including: a signal adjuster (105) which is provided with a plurality of output lines, and which outputs, to the output line, which corresponds to a range to which a...
8963753 Oversampling A/D converter  
An oversampling A/D converter includes a first filter including a first resistive element, a first capacitive element, a second resistive element, an operational amplifier, and a second capacitive...
8963755 Multi-level sigma-delta ADC with reduced quantization levels  
A multi-level sigma-delta Analog to Digital converter provides multi-level outputs using a quantizer with reduced quantization levels. The converter comprises a direct path comprising a...
8963754 Circuit for digitizing a sum of signals  
A circuit for digitizing a sum of a first input signal and a plurality of second input signals has a passive adder that sums the second input signals and outputs a summation signal and a multi-bit...
8952837 Multi-rate sigma delta digital-to-analog converter  
A multi-rate sigma delta digital-to-analog converter may include a signal input and a signal output, and multiple modulators. A first of the modulator may convert a digital input signal on the...
8947279 Delta/sigma modulator  
According to one embodiment, a delta/sigma modulator includes a first multiplier based on a reference capacitor having capacitance CR and a first variable capacitor having capacitance CS1...
8947280 Analogue-to-digital converter  
An integrated-circuit, continuous-time, sigma-delta analog-to-digital converter has a single-ended analog input, a converter reference input, and a ground connection. The converter has a...
8947278 Single-ended to differential buffer circuit and method for coupling at least a single-ended input analog signal to a receiving circuit with differential inputs  
A single-ended to differential buffer circuit is disclosed, adapted to couple at least an input analog signal to a receiving circuit. The buffer circuit comprises an output section comprising a...
8941526 Time integrator and ΔΣ time-to-digital converter  
A time integrator integrates time axis information represented by a phase difference between two signals. The time integrator includes a pulse generation circuit configured to convert a time...
8941520 Resistor-based Σ-ΔDAC  
An inverter-driven resistor-ladder digital-to-analog (DAC) converter includes a resistor-ladder network that comprises a resistor for each bit signal of a multi-bit input signal. Each resistor of...
8941517 Method for calbrating a pipelined continuous-time sigma delta modulator  
Traditionally, pipelined continuous-time (CT) sigma-delta modulators (SDM) have been difficult to build due at least in part to the difficulties in calibrating the pipeline. Here, however, a...
8937567 Delta-sigma modulator, integrator, and wireless communication device  
A delta-sigma modulator includes: an integrator having an operational amplifier; a quantizer quantizing an output of the integrator; a first D-A converter converting an output of the quantizer to...
8933833 Conversion device  
The disclosed conversion device converts an analog input signal into a digital signal and outputs thereof, wherein the conversion device comprises a feedback signal generator for performing...
8929480 Transmitter  
There is provided a transmitter with a small area and low noise. A direct RF modulation transmitter is constituted by an N-number of input signal delay-attached direct RF converters to which an I...
8928511 Sigma-delta modulator with SAR ADC and truncater and related sigma-delta modulation method  
A sigma-delta modulator includes a processing circuit, a quantizer, a truncater and a feedback circuit. The processing circuit receives an input signal and an analog information and generates an...
8928519 Based-band to radio frequency up-converter  
A base band to frequency up-converter is described wherein the base band to frequency up-converter comprises a first input for receiving a first base band signal of first base band samples and a...
8922411 Configurable hardware-sharing multi-channel ADC  
Representative implementations of devices and techniques provide configurable multi-channel analog-to-digital conversion. In a multi-channel analog-to-digital converter (ADC), one or more ADC...