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WO/2015/041880A1 |
A transmitter includes a delta-sigma modulator (100) characterized by a noise transfer function having a multitude of zeroes positioned substantially near a frequency band of a receive signal. The transmitter further includes, in part, a...
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WO/2015/026472A1 |
A fractional-N divider of a frequency synthesizer is driven by a dither-less error feedback modulator to alleviate fractional spurious tones introduced by the cyclic train of division ratios from deita-sigma modulators. A first feedback ...
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WO/2015/004829A1 |
Each D/A converter element (100) of this D/A converter (1A) is provided with: a current source (101, 102, 103) that supplies output current to an output node (401, 402); and a switch (110, 111) for controlling the output current. A capac...
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WO/2015/002864A1 |
Embodiments of the present invention are directed to an analog to digital converter, comprising a comparator for comparing an analog input signal and an analog feedback signal output from a digital to analog converter to generate a digit...
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WO/2014/204602A1 |
Measurement circuits having a delta-sigma modulator are disclosed. One example measurement circuit includes a low pass filter coupled to receive an input voltage, a switched-capacitor integrator circuit, and a switched comparator circuit...
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WO/2014/201198A1 |
Capacitive proximity detection is provided by combining a delta-sigma modulator and a capacitive voltage divider circuit to create a high resolution capacitive-to-digital converter. Period and duty cycle counters provide duty cycle ratio...
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WO/2014/201215A1 |
A delta-sigma modulator has a first summing point subtracting a first feedback signal from an input signal and forwarding a result to a transfer function, a second summing point adding an output signal from said transfer function to the ...
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WO/2014/192574A1 |
This transmission circuit comprises: a comparator which converts a phase modulation signal from a quadrature modulator into a pulse signal to use the pulse signal as the sampling clock of a delta-sigma modulator; and an asynchronous cloc...
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WO/2014/180202A1 |
A delta sigma modulator (DSM) and modulation method thereof, the method comprising: preprocessing the inputted data; predicting a DSM modulation result according to the current data; and conducting DSM modulation on the current data acco...
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WO/2014/182474A1 |
A chip-to-chip communications circuit which is particularly well-suited for short range communication (less than a few inches) from one integrated circuit (chip) to another is presented. The circuits preferably utilize multi-frequency qu...
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WO/2014/182876A1 |
A differential sampling circuit (100) includes a compensation circuit (140) for cancelling harmonic content resulting from a phase imbalance. The compensation circuit (140) includes a pair of field effect transistors (142, 143) operating...
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WO/2014/174283A1 |
This application relates to circuitry for processing sense signals generated by MEMS capacitive transducers for compensating for distortion in such sense signals. The circuitry has a signal path between an input (204) for receiving the s...
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WO/2014/176030A1 |
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 original signal. The differential signal can re...
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WO/2014/168934A2 |
In accordance with embodiments of the present disclosure, a digital microphone system may include a microphone transducer and a digital processing system. The microphone transducer may be configured to generate an analog input signal ind...
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WO/2014/168939A2 |
In accordance with embodiments of the present disclosure, a digital microphone system may include a microphone transducer and a digital processing system. The microphone transducer may be configured to generate an analog input signal ind...
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WO/2014/164211A1 |
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 charge transferred by the DAC. The DAC ha...
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WO/2014/164511A1 |
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+l output levels, comprising: a plurality of second switching units for couplin...
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WO/2014/149358A1 |
In one embodiment, a power amplification system of a radio-frequency transmitter includes a digital signal source that provides a digital input signal to an interleaved-bit- stream generator, which outputs a digital switching signal to a...
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WO/2014/150613A1 |
A semiconductor device measures a state of a MEMS as a first voltage variation at a sensing node. The state of the MEMS includes a capacitance. A first capacitor is coupled between the sensing node and an input of an integrator for trans...
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WO/2014/133061A1 |
Provided is a ∆Σ modulator that is capable of outputting an output signal that includes multiple output signals of different frequencies. The ∆Σ modulator is equipped with: multiple input ports to which multiple input signals of di...
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WO/2014/127821A1 |
A frequency selective circuit configured to convert an analog input signal to a digital output signal comprises an analog-to-digital converter (44) to generate the digital output signal of the circuit based on an analog input signal to t...
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WO/2014/107258A9 |
A system and method dynamically selects digital-to-analog (DAC) circuit elements to provide a true differential-output delta-sigma (ΛΣ) DAC. The sign and magnitude m of a received N-bit input code is determined. If the input code compr...
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WO/2014/122645A1 |
A multiplexed sigma delta modulator constituted of: a control circuitry; a multiplexer responsive to the control circuitry and arranged to receive a plurality of input signals; a comparing circuit, a first input of the comparing circuit ...
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WO/2014/094913A1 |
The present invention is related to a sigma-delta analog-to-digital converter (ADC). It further relates to a method for designing and manufacturing a sigma-delta ADC, and to a digital control loop comprising the same. According to the pr...
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WO/2014/097959A1 |
[Problem] To suppress a decline in the control accuracy of an applied voltage associated with an increase in quantum noise, and increase the control accuracy of a motor speed. [Solution] When forming a drive voltage signal supplied to a ...
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WO/2014/098217A1 |
When forming a drive voltage signal supplied to a motor from a drive command signal, a motor drive voltage control device reduces the gradation level and performs noise-shaping modulation before performing PWM modulation. Reducing the gr...
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WO/2014/098971A1 |
Described is an analog to digital converter (ADC) which comprises: a sigma-delta modulator to receive an analog signal, the sigma-delta modulator operable to perform chopping to cancel common-mode noise; and one or more counters coupled ...
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WO/2014/087561A1 |
This A/D converter (200) is equipped with: an A/D conversion circuit (201) for generating a dissipation current (Idis) which has dependency on an input voltage (Vin); and a counteracting current generation circuit (202) for generating a ...
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WO/2014/083372A1 |
An ultrasound transducer probe (104) includes a transducer array (108) of elements ( 1 10) that emit an ultrasound signal and receive analog echo signals produced in response thereto and a beamformer (1 12), housed by the probe, that con...
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WO/2014/077070A1 |
[Problem] To shorten the measurement time, while maintaining the measurement precision, for a data converter of delta-sigma system. [Solution] A measurement method of the present embodiment is a measurement method for a delta-sigma type ...
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WO/2014/074934A2 |
An apparatus for ophthalmic procedures contains a source of aiming and treatment laser beams, folded mirrors and lens arrays to cause the formation of a static pupil on a delivery mirror for observation and treatment by an operator of th...
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WO/2014/065408A1 |
Provided is a data converter which is provided with a clock signal input unit which inputs a clock signal, an input unit which inputs an input signal, a sampling unit which, in response to the clock signal inputted to the clock signal in...
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WO/2014/064421A1 |
This application relates to digital-to-analogue conversion with improved noise performance. Embodiments relate to digital-to-analogue conversion circuits (300 ) for converting a digital audio signal to an analogue audio signal having a d...
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WO/2014/060469A1 |
Conventional analog and digital charge amplifiers for converting a charge output by a piezoelectric sensor into a proportional voltage require analog integration which inherently involves a drift in the output signal. In order to avoid t...
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WO/2014/051166A1 |
A device divides a sampled sound signal into a high frequency signal and a low frequency signal, individually encodes the high frequency signal and the low frequency signal, and generates error detection code pertinent to the high freque...
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WO/2014/049176A1 |
The invention relates to a continuous-time sigma delta radio frequency modulator (100) including at least two LC resonators (108, 110) that create a bandpass filter and are coupled therebetween in parallel by means of at least one capaci...
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WO/2014/031496A1 |
An electronic system includes a configurable processing device. The configurable processing device includes a processor that performs digital processing, a first input that receives digital signal, a first output that sends digital signa...
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WO/2014/031497A1 |
Configuration information is generated for a configurable mixed-signal system. Analog requirements for operating the configurable mixed-signal system are gathered. A simulation model of a delta-sigma modulator is received. A simulation b...
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WO/2014/027664A1 |
Provided is a bit encoding device for error correction encoding of an input bit sequence that has been input, and for generating an encoded bit sequence, wherein the bit encoding device is characterized by being equipped with: an encodin...
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WO/2014/026223A1 |
Parallel analog to digital converted (ADC) architectures that can be used to replace single path ADC architectures. The parallel ADC architecture can comprise N branches and one ADC per branch. These ADCs can be identical. However each b...
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WO/2014/023776A1 |
The present invention relates to a two- or multiple-stage analog to digital converter. The converter preferably includes an incremental ADC in the first stage. The incremental ADC comprises an integrator and a comparator. After the prede...
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WO/2014/022410A1 |
A low distortion feed forward delta sigma modulator includes a first adder operable to receive a feedback signal and an input signal. The modulator also includes a first integrator operable to receive an output from the first adder, and ...
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WO/2014/016333A1 |
A digital-to-analog converter (10) is described which comprises at least one cell (301). The cell (301) has a first coupling capacitor (415) with a second terminal connected to an output and a first inverter (405, 410) connected between ...
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WO/2013/183550A1 |
A signal conversion device equipped with: a converter that outputs a 1-bit quantization signal representing a band-transmission system analog signal; and an encoding unit that executes a base band transmission path encoding process with ...
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WO/2013/183534A1 |
A digital signal processing unit (21) is provided with a signal conversion unit (70) which uses a clock signal supplied from an oscillator (40) as an operating clock to convert a digital RF signal to a quantization signal by way of delta...
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WO/2013/183528A1 |
A delta-sigma modulation system according to the present invention is provided with a delta-sigma modulator that outputs a n-level (where n is an integer greater than or equal to 3) quantized signal, a multi-bit output unit that converts...
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WO/2013/177678A1 |
Cryogenic electronics based upon semiconductive devices, superconductive devices, or a combination of the two present opportunities for a wide variety of novel, fast, and low power devices. However, such cryogenic electronics require coo...
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WO/2013/163564A1 |
Aspects of the disclosure provide an analog-to-digital converter (ADC). The ADC includes a comparator module and a digital-to-analog converter (DAC). The comparator module is configured to compare a first voltage sampled from an analog s...
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WO/2013/159525A1 |
The invention discloses a method and a device for driving a digital speaker based on code conversion. The method includes: (1) converting input formats; (2) performing multi-bit Sigma-delta modulation; (3) performing thermometer code con...
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WO/2013/157127A1 |
The present invention relates to a ΔΣ modulator and a ΔΣ A/D converter, wherein, with a simple configuration, by accelerating a settling time constant of a final stage integrator, a sampling frequency of a ΔΣ modulator overall is a...
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