Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 701 - 750 out of 1,262

Document Document Title
JPH0418481B2  
JPH0478214A
PURPOSE: To reduce the effect of jitter caused by sampling an asynchronous input data by outputting a control signal in response to a jitter component and obtained through the comparison between a main sample value and a pseudo sample va...  
JPH0468808A
PURPOSE: To easily increase a specified constant with a resistor and a capacitor having small values by connecting a switching means for ON/OFF in a fixed cycle to the input side of a low-pass filter circuit to pass a low frequency. CONS...  
JPH048966B2  
JPH046145B2  
JPH0420017A
PURPOSE: To reduce the circuit scale and to decrease the chip size by forming an SC circuit in which a D/A converter(DAC) and a switched capacitor (SCF) are integrated. CONSTITUTION: Input capacitors of an SC circuit 1 employs plural cap...  
JPH03293810A
PURPOSE: To compensate the error factor due to analog switches provided for switching of the cut-off frequency by compensating the gain by a ratio of the resultant capacity of capacitors in an input part to that in an output part. CONSTI...  
JPH0380369B2
A combined phase detector and low pass filter comprises charge storage means (10) which is responsive to an input signal (VI) and which is charged to a level dependent upon the magnitude and phase of the input signal in response to a fir...  
JPH0380368B2  
JPH03286616A
PURPOSE: To realize a filter of a video band whose circuit integration has been difficult so far by devising a transistor(TR) circuit so that its gain and its cut-off frequency both depend on a capacitance ratio. CONSTITUTION: A differen...  
JPH03117938U  
JPH0376060B2  
JPH03250911A
PURPOSE: To reduce noise to the utmost by forming a switched capacitor integrator of a switch, a capacitor and a differential amplifier. CONSTITUTION: When an input signal VIN is inputted to an input terminal 1 and a clock 1 reaches a hi...  
JPH03242025A
PURPOSE: To reduce noise and to make distortion low by making a signal on an addition node an analog signal that corresponds to digital input data and making the capacitance of a signal capacitor represent a tap weight coefficient which ...  
JPH03234111A
PURPOSE: To decrease an offset voltage by controlling a signal turning on/off a switch connecting to each capacitive element so as to select a capacitive element thereby decreasing a DC transfer gain from an noninverting input of an oper...  
JPH03504788A
A switched capacitor digital-to-analogue converter employing a single capacitor C, common to a plurality of bits b,bw-1, appropriate weighting of the bits being achieved by switching waveforms A0 to Aw-1.  
JPH0363848B2
An operational amplifier has a bias stage, a sampled differential stage, and a push-pull cascode stage. Unlike the conventional operational amplifier, the sampled differential stage is adopted in place of a differential stage has switche...  
JPH03206707A
PURPOSE: To reduce the definite GB product of an operational amplifier OP and to attain low power consumption by attaining addition with one operational amplifier, and forming a switched capacitor circuit. CONSTITUTION: The circuit consi...  
JPH03207108A
PURPOSE: To perform full-wave rectification in the center of an input waveform at all times by supplying the output of an extracting circuit which extracts only the DC voltage of an input voltage as the reference voltage of an amplifying...  
JPH03201617A
PURPOSE: To realize the change of a delay time without causing the fluctuation of a passing frequency band by controlling the read of a capacitor array to successively store the outputs of an input amplifier. CONSTITUTION: A capacitor ar...  
JPH03181218A
PURPOSE: To attain the application of the same equalizer to different transmission speeds by varying the sample frequency of a root-f equalizer. CONSTITUTION: The frequency characteristic of a root-f filter RTFEQ is moved in parallel on ...  
JPH03166804A
PURPOSE: To remove a beat frequency by using a 1st switch capacitor circuit as an input to a 1st amplifier of an FM detector and a 2nd switch capacitor circuit as a feedback element of a 2nd amplifier. CONSTITUTION: An FM detector 100 co...  
JPH03165118A
PURPOSE: To cancel the offset voltage of an operational amplifier and to extract an output continuously by providing two switched capacitor circuits so as to operate complementarily, and an output selection circuit selecting the output a...  
JPH0345570B2
A multiplexer samples multiple analog waveform signals to provide a sequence of input signals to an active low-pass filter. The bandwidth of the filter is determined by an input RC network having series resistance and shunt capacitance e...  
JPH03160814A
PURPOSE: To widen the band with an excellent amplitude phase characteristic by using a shift register, a capacitor and an input output switch to operate a delay register for obtaining the constitution similar to an acyclic digital filter...  
JPH0342730B2
A switched capacitor filter having the same value of capacitance for the integrating capacitor of each filter channel. The use of the same value capacitance results in DC offset voltages for each channel being identical and easy to corre...  
JPH03150926A
PURPOSE: To satisfy requests of low distortion and low noise by compensating the fluctuation of the electric capacity of a signal transmitting capacitor by the comparison with resistance in this circuit. CONSTITUTION: A switch capacitor ...  
JPH0338787B2  
JPH0336328B2
A capacitor simulator circuit comprises a first node, a first capacitor coupled between a second node and a reference potential, a second capacitor coupled between a third node and a reference potential, a resistor coupled between the fi...  
JPH0389633A
PURPOSE: To eliminate the necessity for an analog circuit for supplying a clock signal to a sampling data filter function by setting up a local oscillator, so that a 2nd frequency is made equal to a value obtained by a 1st frequency by a...  
JPH0324087B2
A switched capacitor adaptive line equalizer for use in digital communication system adapted to receive input signals at a plurality of signal rates and to supply equalized output signals. Input signals are sent through a switched capaci...  
JPH0376309A
PURPOSE: To obtain a switched capacitor circuit operated properly without increasing in power consumption and chip size even at the time of driving by low voltage by decreasing a threshold voltage of a CMOS switch so as to decrease its O...  
JPH0322727B2
A general purpose active filter which can be fabricated as a single, monolithic IC. The IC includes two independent filter building blocks. Each filter block includes a pair of serially connected summers and a pair of serially connected ...  
JPH0322728B2
A dynamic amplifier circuit, specifically for switched-capacitor filters, having a current source which supplies an exponentially-decreasing bias current. In addition, a current source is included for supplying an additional bias current...  
JPH0322726B2  
JPH0322090B2  
JPH0322094B2  
JPH0316804B2  
JPH0314365B2  
JPH0311567B2  
JPH0311038B2
A leakage current between the inverting input terminal and the output terminal of an operational amplifier having a switch between the two terminals is prevented from flowing by equalizing the potentials at the two terminals of the switc...  
JPH0334717A
PURPOSE: To set the entire filter characteristic to an optimum value by comparing an input signal level to a filter circuit with a signal level after passing through the filter, calculating a required bias voltage, converting the voltage...  
JPH0333988A
PURPOSE: To simplify the constitution of a switched capacitor circuit by connecting a capacitor between the common connecting point of the first serial body and the common connecting point of the second serial body. CONSTITUTION: One end...  
JPH039645B2
The input terminal of a voltage follower is coupled to a point of reference potential via a first capacitor. A second capacitor is alternately connected across a source of input signals and connected in parallel with the voltage follower...  
JPH0330509A
PURPOSE: To output a signal, in which a repeated component is not included, by providing an active RC low-pass filter which is provided in the front stage of a switched capacitor low-pass filter and interrupts components more than 1/2 in...  
JPH035684B2  
JPH031740A
PURPOSE: To prevent the deviation of a tuning frequency based on a change in the ambient temperature by providing the reception circuit side with a couple of switched capacitor filters(SCF) separating a transmission signal into two recep...  
JPH0262968B2
An operational amplifier capable of selectively performing a variety of circuit functions is provided. A single operational amplifier utilizes switched capacitors for sampling and holding an input signal, for establishing a low frequency...  
JPH0262969B2
An operational amplifier capable of selectively performing a variety of circuit functions is provided. A single operational amplifier utilizes switched capacitors for sampling and holding an input signal, for establishing a low frequency...  
JPH02305107A
PURPOSE: To obtain a filter with broad band characteristic by providing a means to allow a PLL circuit to control a steep change in a control signal, and driving the PLL circuit with a reference signal having a frequency fref in a freque...  

Matches 701 - 750 out of 1,262