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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 
Analogtodigital conversion apparatus and method capable of achieving fast settling
A method utilized in an analogtodigital 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 analogtodigital converter of the deltasigma type for a... 

9035814 
Feedforward deltasigma modulator
A feedforward deltasigma modulator includes a successive approximation analogtodigital converter, a digitaltoanalog converter, N integrators, a first adder, a second adder, and an... 

9035813 
Technique for excess loop delay compensation in deltasigma 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 selftest of successive approximation register (SAR) A/D converter
A singleended SAR ADC includes an additional capacitor, a selftest 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 
Continuoustime delta sigma modulator
A continuoustime 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 
Sigmadelta modulators with high speed feedforward architecture
A sigmadelta modulator is provided for generating a digital output signal. The sigmadelta modulator is used to generate a digital output signal. The sigmadelta modulator includes a multistage... 

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 
Lowpower sigmadelta converter
A sigmadelta 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 pulsewidth modulators
A circuit including an analogtodigital 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 
Selfcalibrated deltasigma modulator and method thereof
A deltasigma modulator and corresponding method are disclosed. In one implementation, the deltasigma modulator includes a multiplexer for receiving an analog input signal and a common mode... 

9008193 
Power line communication device that is resilient to crossband interference
A Power Line Communication (PLC) device that is resilient to crossband interference. The PLC device is configured to communicate on AC power wiring in the frequency range of 9 kilohertz to 500... 

9007247 
Multibit sigmadelta modulator with reduced number of bits in feedback path
A sigmadelta modulator for an ADC, passes an input signal to a loop filter, then to a multibit quantizer of the modulator. An output of the quantizer is passed to a digital filter, and a... 

9007248 
MASH sigmadelta modulator and DA converter circuit
A MASH sigmadelta 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, fullydifferential amplifier and deltasigma modulator
An amplifier includes a frontend gain stage and an ACcoupled pushpull output stage. The ACcoupled pushpull output stage includes a first transistor, having a source, a drain and a gate,... 

9000961 
Arrangement for reading out an analogue voltage signal with selfcalibration
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 continuoustime, 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 continuoustime deltasigma DAC with reduced noise
A continuoustime deltasigma digitaltoanalog converter (DAC) includes a first deltasigma 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 
Deltasigma D/A converter
A deltasigma 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) analogtodigital 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 analogtodigital... 

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 
Selfmodulated voltage reference
A selfmodulated 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 analogtodigital converter for sensing geophone signals
A low power analogtodigital 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 continuoustime sigma delta modulator
Traditionally, pipelined continuoustime (CT) sigmadelta 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 digitalto 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 
Multilevel capacitive DAC
A digitalto 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 
Trilevel digitaltoanalog converter
Methods, systems, and apparatuses for converting a digital input signal to an analog output signal are disclosed. A first deltasigma 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 
Multilevel sigmadelta ADC with reduced quantization levels
A multilevel sigmadelta Analog to Digital converter provides multilevel 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 multibit... 

8952837 
Multirate sigma delta digitaltoanalog converter
A multirate sigma delta digitaltoanalog 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 
Analoguetodigital converter
An integratedcircuit, continuoustime, sigmadelta analogtodigital converter has a singleended analog input, a converter reference input, and a ground connection. The converter has a... 

8947278 
Singleended to differential buffer circuit and method for coupling at least a singleended input analog signal to a receiving circuit with differential inputs
A singleended 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 timetodigital 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 
Resistorbased ΣΔDAC
An inverterdriven resistorladder digitaltoanalog (DAC) converter includes a resistorladder network that comprises a resistor for each bit signal of a multibit input signal. Each resistor of... 

8941517 
Method for calbrating a pipelined continuoustime sigma delta modulator
Traditionally, pipelined continuoustime (CT) sigmadelta modulators (SDM) have been difficult to build due at least in part to the difficulties in calibrating the pipeline. Here, however, a... 

8937567 
Deltasigma modulator, integrator, and wireless communication device
A deltasigma modulator includes: an integrator having an operational amplifier; a quantizer quantizing an output of the integrator; a first DA 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 Nnumber of input signal delayattached direct RF converters to which an I... 

8928511 
Sigmadelta modulator with SAR ADC and truncater and related sigmadelta modulation method
A sigmadelta 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 
Basedband to radio frequency upconverter
A base band to frequency upconverter is described wherein the base band to frequency upconverter comprises a first input for receiving a first base band signal of first base band samples and a... 

8922411 
Configurable hardwaresharing multichannel ADC
Representative implementations of devices and techniques provide configurable multichannel analogtodigital conversion. In a multichannel analogtodigital converter (ADC), one or more ADC... 