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JPH09283744A |
To provide a signal operating circuit which performs operation processing, making use of the transfer by CCD element. In a signal operating circuit which is equipped with a plurality of CCD elements in a row for transferring signals, a s...
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JPH09285132A |
To reduce impulse-like current flowing from a power supply by sequentially selecting voltages divided using a plurality of capacitors, supplying false alternating-current voltage, and sequentially connecting a capacitor in parallel for l...
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JPH09284096A |
To permit the influence of feed-through noise to be min. and to improve the arithmetic precision of an integrating equipment, etc., and the converting precision of an A/D converter by setting the timing of the control clock of a switches...
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JP2665011B2 |
A chirped backscatter filter 10 compares a received signal (RSIG) to a reference signal related to a transmitted signal (TSIG) and removes from RSIG the frequency component which is equal to TSIG in frequency. This removed frequency comp...
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JPH09251335A |
To reduce power consumption by controlling the flow-in of a useless current to an LSI on a connection bus to the LSI. When the LSI 3 is not in use, a power source switch 2 is turned OFF by power source control signals inputted through an...
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JPH09199994A |
To improve the S/N of each output signal from each switched capacitor filter(SCF) even when plural SCFs are assembled on a same board. The filter is provided with plural SCFs 8a, 8b with the same filter characteristic receiving input sig...
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JP2636794B2 |
PURPOSE: To enable an SC circuit to be formed as approximate in characteristics as previously designed by a method wherein a parasitic capacitance formed between capacitors used in a switched capacitor circuit (SC circuit) is eliminated....
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JP2630081B2 |
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JP2627499B2 |
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JP2623692B2 |
PCT No. PCT/JP89/00050 Sec. 371 Date Sep. 22, 1989 Sec. 102(e) Date Sep. 22, 1989 PCT Filed Jan. 20, 1989 PCT Pub. No. WO89/06862 PCT Pub. Date Jul. 27, 1989.A semiconductor apparatus of the present invention comprises, as, for example, ...
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JP2614137B2 |
A phase difference detection unit for an automatic focusing system of a camera or the like. The phase difference detecting unit includes a pair of linear image pickup devices which receive a pair of optical images of an object formed by ...
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JPH09130211A |
To facilitate circuit integration by delaying at least one of video signals, applying the delayed signal to an adder, and arraying the delay circuit by the switched capacitor technology so as to minimize the signal delay. The filter is p...
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JPH09130685A |
To reduce switching noise, to accelerate arithmetic speed and to improve accuracy by commonly connecting one terminal of a capacitor connected to each input terminal and inputting the commonly connected one terminal through an analog amp...
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JPH0993086A |
To increase an equivalent resistance value regardlessly of the switching frequency and capacitance of switched capacitor. Five capacitors C1 to C5, for which one terminal is connected to the ground, are parallelly arranged and between a ...
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JPH0983353A |
To secure almost the same duty ratio for the frequency divided output signals despite the odd frequency division and also to attain a fast frequency dividing operation. A D flip-flop 11 operates at the rise of a clock CK and sets its out...
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JP2592449B2 |
A line equalizer for eliminating a precursor interference component and postcursor interference components from a pulse signal inputted from a transmission line. A precursor equalizer takes a sum of a signal derived from the input pulse ...
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JP2576644B2 |
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JPH0927732A |
To secure the ratio precision of capacitors and improve set resolution, and to suppress an increase in the total capacity value of capacitors. The programmable capacitor array 30 consists of switches SW20, SW21, SW22, and SW23 connected ...
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JPH0927731A |
To secure high-speed operation and avoid the occurrence of an output error by performing on-off control over a 1st and a 2nd switch with two-phase clocks having a nonoverlap period of high level and also performing on-off control over a ...
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JPH0918290A |
PURPOSE: To correct the distortion of the output due to the input offset voltage of an operational amplifier in an integration type switched capacitor circuit which integrates an input signal. CONSTITUTION: An integrating circuit 11 whic...
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JP2571811B2 |
The filter comprises four operational amplifiers in cascade, with switched capacitors in series at the input of every amplifier, with fixed capacitors in parallel to two of said amplifiers, with fixed and switched capacitors in parallel ...
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JP2570199B2 |
PURPOSE: To improve noise characteristic by making a current flowing in/out of a power source which supplies internal ground potential to a switched capacitor circuit and a current having a quantity and a polarity the same as and reverse...
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JP2565592B2 |
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JPH08330968A |
To provide a digital/analog converter which compensates in a digital area group delays and phase distortions which are caused by an analog filter and its compensating method. This device samples a digital data input in a rate that is equ...
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JPH08307212A |
To take a MOSFET composed of a thin oxide layer in a voltage conversion circuit without lowering the reliability of the circuit. A switched capacitor interface circuit 20 converts the voltage output of a sensor of the outside of the powe...
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JPH08305681A |
PURPOSE: To arbitrarily and variably set the filter characteristic without increasing the cost by providing an RC active filter part including a variable resistance circuit, a capacitor, and an operational amplifier, a register, a means ...
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JPH08307276A |
PURPOSE: To provide the filter processing circuit used by a data system of a bit stream form in which a sampling rate of input data is used and desired filter processing is attained with a small circuit scale. CONSTITUTION: The filter pr...
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JP2553136B2 |
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JPH08237127A |
To provide programmable capacitor arrays 10 and 10', where individual capacitors can be cut off, and their programming method. The programmable capacitor array 10 or the like includes capacitor arrays C0 to Cn , and each capacitors of th...
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JPH08508625A |
A biquad switched capacitor filter is preferably utilized as the output filter in a sigma delta digital-to-analog converter. The switched capacitor filter uses a cross-coupled switched capacitor circuit which delivers charge to the capac...
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JPH08212274A |
PURPOSE: To easily execute the arithmetic operation of an analog signal by connecting an analog signal processing circuit to between a multiinput terminal and a capacitance and providing a means resetting the common-connected capacitance...
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JPH08204509A |
PURPOSE: To realize the measurement of an accurate capacitance by reducing feed-through noise generated by a parasitic capacitance of a switching transistor(TR) in the measurement of the capacitance of the switched capacitor circuit. CON...
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JPH08204508A |
PURPOSE: To provide a switched capacitor circuit in which the effect of noise attended with switching is effectively suppressed with low power consumption at a low cost. CONSTITUTION: A switching section 10 is provided with a capacitor 1...
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JP2519171B2 |
PURPOSE: To eliminate low frequency noises from a noise circuit in an operational amplifier and to extend the dynamic range, and to eliminate the effect to the frequency response of the capacity ratio of a band filter. CONSTITUTION: A sw...
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JPH08506948A |
PCT No. PCT/GB94/00385 Sec. 371 Date May 15, 1996 Sec. 102(e) Date May 15, 1996 PCT Filed Feb. 25, 1994 PCT Pub. No. WO94/19763 PCT Pub. Date Sep. 1, 1994A signal processing circuit which provides an accurate, continuously tunable impeda...
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JPH08186471A |
PURPOSE: To avoid the quick gain change of an operational amplifier and to reduce the amplitude voltage of ringing by continuously turning on/off the circuit between the inverted input terminal and the output terminal of the operational ...
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JP2500791B2 |
PURPOSE: To reduce the power consumption of the circuit connecting to the post stage of the differential amplifier circuit by providing a limiter function against an excess input signal to an output stage of the differential amplifier ci...
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JP2500422B2 |
PURPOSE: To provide a low-loss step-down circuit with built-in LSI chip. CONSTITUTION: A step-down circuit 1 is equipped with a voltage dividing circuit 10 and a voltage comparing circuit 11, and one input terminal (-) of the comparator ...
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JPH08130422A |
PURPOSE: To eliminate the loss of a charge and to hold a dynamic characteristic by stitching the output of the input switched operational amplifier structure of a switched capacitance circuit to supply voltage. CONSTITUTION: The output o...
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JPH08125495A |
PURPOSE: To provide the analog input selection circuit whose input circuit uses a passive filter without losing the processing efficiency in a switched capacitor circuit. CONSTITUTION: The analog input selection circuit 300 selecting any...
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JPH0834410B2 |
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JPH0831777B2 |
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JPH0831778B2 |
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JPH0879013A |
PURPOSE: To make the pole frequency of a filter element precisely adjustable without requiring any clock signal impressed from the outside by providing a phase locked loop for impressing a clock signal having a specific frequency upon th...
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JPH0865108A |
PURPOSE: To reduce a chip area at the time of integrating the circuit. CONSTITUTION: The switched capacitor filter 1 consists of a coefficient switched capacitor 3Rp, a delay switched capacitor 5ij, and an integration device 13. The inte...
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JPH0817330B2 |
A digital-to-analog converter includes a delta-sigma modulator (10) that receives a digital input and converts it to a one-bit digital output stream. A fourth order switched-capacitor filter (12) is operable to receive the one-bit digita...
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JPH0851348A |
PURPOSE: To correctly detect the peak value of the output of a switches capacitor filter(SCF) without using a low-pass filter. CONSTITUTION: A synchronous peak detecting part 2 connected to the output terminal 14 of a switched capacitor ...
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JPH0846488A |
PURPOSE: To provide a switching capacitor circuit lowering harmonic wave distortion without considerably increasing the complexity of circuit and the area required for integration as an integrated circuit. CONSTITUTION: This circuit has ...
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JPH0832410A |
PURPOSE: To configure the switched capacitor circuit not affected by an external signal such as a clock signal. CONSTITUTION: The circuit consists of an operational amplifier OP, a feedback capacitor C3 provided in a feedback path of the...
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JPH088489B2 |
A circuit transformation that doubles the effective sampling rate of any switched capacitor oversampled, interpolative modulator, regardless of its order, employs, in each integrator of the modulator, a second input capacitor and switche...
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