| Document |
Document Title |
|
JPS6079816A |
PURPOSE: To switch the transmission characteristic and also to prevent deterioration of noise rejection ratio by supplying a ground potential to a capacitor not selected. CONSTITUTION: Switches S10∼S13 and S30∼S33 are constituted by ...
|
|
JPS6074815A |
PURPOSE: To form a delay circuit in a small circuit scale by replacing a delay circuit using a train of inverters with a delay circuit using a capacitor. CONSTITUTION: A clock signal 0 having a 50:50 time ratio between L and H levels is ...
|
|
JPS6074710A |
PURPOSE: To reduce spike produced at switching of a switched capacitor circuit by making the time constant of each capacitor equal to that of a switch circuit limiting the connection of each capacitor. CONSTITUTION: The time constant of ...
|
|
JPS6074711A |
PURPOSE: To obtain the circuit constitution where the amplification factor is varied continuously by using a varactor element as a capacitive element of a switched capacitor circuit. CONSTITUTION: The capacitance between the anode and ca...
|
|
JPS6065611A |
PURPOSE: To obtain a tapped delay line by decreasing the number of quantities of amplifiers, capacitors and switches and connecting in cascade delay circuits advantageous for circuit integration. CONSTITUTION: The switches S11, S12 perfo...
|
|
JPS6058705A |
PURPOSE: To perform frequency conversion with simple circuit constitution by providing a time constant circuit whose time constant is varied by a control signal to a feedback circuit of an amplifier. CONSTITUTION: The feedback circuit of...
|
|
JPS6057722A |
PURPOSE: To reduce noise by a gate drive pulse by turning on/off simultaneously an FET poled oppositely and a switching FET. CONSTITUTION: An N-channel enhancement MESFETTN and a P-channel enhancement MESFETTP are used and a complementar...
|
|
JPS6048611A |
PURPOSE: To measure each channel characteristic of a multiplex filter even with one test output terminal by constituting the test circuit with an output selecting circuit and a switch group, connecting all other terminals of the switch g...
|
|
JPS6046113A |
PURPOSE: To reduce the time required for detecting a wave by dividing plural input signal in time and processing sampled signals at an arithmetic section provided with plural feedback capacities and feedback circuits, and then, separatin...
|
|
JPS6041804A |
Multiplying circuit for multiplying a first signal x(t) by a periodic second signal y(t) and being particularly suitable for use as an amplitude demodulator in a stereo decoder or in a phase-locked loop. It comprises N signal channels 26...
|
|
JPS6038918A |
Band-rejection filter of the switched capacitor type in which at least one unwanted frequency component present in an information signal must be suppressed. To that end this filter comprises an adder circuit 4 to which the information si...
|
|
JPS6038916A |
PURPOSE: To obtain a switched capacitor filter having a new transfer function by resetting a feedback capacitor in fetching an input signal to an input capacitor at the 1st timing so as to transfer the difference between the past data fe...
|
|
JPS6035828A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
|
|
JPS6031307A |
PURPOSE: To reduce the number of amplifiers, capacitors and switches by providing a delay circuit comprising the 1st capacitor connected between an output terminal and an inverted input terminal of an amplifier and a switch circuit contr...
|
|
JPS6031308A |
PURPOSE: To prevent deterioration in sound quality due to magnetic distortion of a core member by using a sample-and-hold circuit so as to suppress an unnecessary subcarrier included in a stereo demodulation output. CONSTITUTION: A demod...
|
|
JPS6029013A |
PURPOSE: To obtain a filter suitable for a monolithic IC by providing a transmitter, an output device and a controller giving a control signal to each device and outputting a signal having a different transfer characteristic from an anal...
|
|
JPS6029014A |
PURPOSE: To obtain a BPF with a few number of operational amplifiers by providing a transfer circuit including a feedback circuit applying negative feedback to an operation circuit via plural switches and an output circuit outputting a s...
|
|
JPS6028319A |
PURPOSE: To attain ease of circuit integration by constituting a coefficient device and an adder with a switched capacitor and an operational amplifier and constituting also a delay circuit similarly. CONSTITUTION: A sample-and-hole stag...
|
|
JPS6016013A |
PURPOSE: To obtain a signal having a phase the same as that of a frequency of a frequency component of a data pulse without jitter by making a frequency component of the data pulse included in an input data signal coincident with a cente...
|
|
JPS59224912A |
PURPOSE: To improve the element sensitivity characteristic by using one switched capacitor both for input and output sides respectively so as to constitute the entire circuit and providing a capacitive element in parallel with each switc...
|
|
JPS59189329U |
|
|
JPS59189330U |
|
|
JPS59219012A |
PURPOSE: To decrease the power consumption of a filter and to attain ease of large scale integration of the filter by realizing a high-order filter by means of three operational amplifiers regardless of a conventional method using operat...
|
|
JPS59210718A |
PURPOSE: To reduce considerably the amount of a DC offset by driving all switching means by a two-phase clock, and grounding some of the means and the remaining means in opposite-phase relation. CONSTITUTION: A figure A shows an amplitud...
|
|
JPS59208922A |
PURPOSE: To eliminate clock leakage and to attain signal transmission free from noise by using a sampling/holding circuit which works on a switch signal having a frequency of (n) times as high as the switching frequency which drives a sw...
|
|
JPS5947351B2 |
|
|
JPS59192295A |
This invention provides a uniquely designed switched capacitor multiplier/adder (129) which also functions as a digital-to-analog converter in a single subcircuit. The multiplier/adder, in a single operation, multiplies an analog voltage...
|
|
JPS59189714A |
PURPOSE: To obtain satisfactory characteristics in both pass frequency bands adjacent to an eliminated band without the influence upon the characteristic upon a BEF by setting a voltage, which is applied to the inductance of LC ladder fi...
|
|
JPS59186012A |
PURPOSE:To obtain optional reference voltage easily by controlling a circuit by providing a group of capacitors which are short-circuited before supply of output voltage of a voltage generating cirlcuit and providing a group of switching...
|
|
JPS59154929U |
|
|
JPS59501729A |
PCT No. PCT/GB83/00203 Sec. 371 Date May 7, 1984 Sec. 102(e) Date May 7, 1984 PCT Filed Aug. 12, 1983 PCT Pub. No. WO84/01065 PCT Pub. Date Mar. 15, 1984.A switched capacitor parasitic insensitive integrator comprises an operational ampl...
|
|
JPS59175209A |
PURPOSE: To obtain a variable resistance with low power consumption by varying the frequency or duty ratio of a clock pulse of a switched capacitor. CONSTITUTION: The switched capacitor is connected between an input terminal T1 and the p...
|
|
JPS5938768B2 |
|
|
JPS59163910A |
PURPOSE: To obtain a semiconductor integrated circuit including a differential amplifier circuit in which crosstalk between internal wirings is decreased, generation of noise is suppressed and the S/N is improved, by adopting strip line ...
|
|
JPS59158615A |
PURPOSE: To attain the compression of dynamic range of capacitance, reduction in the element sensitivity and unit capacitance value and also the area of capacitor and power consumption by using a switch so as to realize a filter and an e...
|
|
JPS59158118A |
PURPOSE: To decrease capacitors in number even when variable kinds of filter characteristics are increased and to facilitate integration and realize a weighted filter coefficient in binary notation by using a programmable integrator cons...
|
|
JPS59149417A |
PURPOSE: To generate mutually opposite-phase clock signals almost without delay by specifying the amount of delay of a signal at inverters. CONSTITUTION: Inverters 4, 8, and 9 are so formed that the delay amount of the signal at the inve...
|
|
JPS59143415A |
PURPOSE: To reduce the number of required variable gain circuits by adding the outputs of taps and inputting the outputs to a common variable gain circuit when the gain of variable gain controlling circuits connected to respective taps i...
|
|
JPS59133723A |
PURPOSE: To obtain sudden gain characteristics in an attenuated region at the high band side of frequency by forming a bicut filter with a double primary conversion type integrator and a forward integrator. CONSTITUTION: An input termina...
|
|
JPS59132218A |
PURPOSE: To improve remarkably the S/N of a power supply by increasing the capacitance of only required part among capacitors constituting a switched capacitor filter. CONSTITUTION: Since a noise signal N5 of an operational amplifier OPA...
|
|
JPS5930277B2 |
|
|
JPS59128810A |
PURPOSE: To deliver selectively both the attenuation quantity and frequency characteristics to both ends of the 2nd resistance by grounding an input signal via the 1st resistance, a capacitor and the 2nd resistance in series and at the s...
|
|
JPS59117318A |
PURPOSE: To obtain a switch means excluding feed-through by means of electric charges in channels by using an N-channel transfer gate MOSFET and a P-channel MOSFET for compensation. CONSTITUTION: The transfer gate MOSFETT1 is formed by N...
|
|
JPS59112716A |
PURPOSE: To obtain a parallel switched capacitor circuit which constitutes a resistance circuit that has high precision and a high resistance value and can be integrated, by connecting switched capacitor circuits which have a positive an...
|
|
JPS59112718A |
A clock-controlled filtering arrangement for suppressing a number of interference frequencies related to a clock frequency, which comprises a time-discrete comb filter included in a negative feedback loop for a selective negative feedbac...
|
|
JPS5926067B2 |
|
|
JPS59107623A |
PURPOSE: To obtain a BPF with a simple constitution in a signal system with less insertion error by changing a center frequency in many ways by one BPF. CONSTITUTION: A signal from a signal source 16 is applied to a switched capacitor fi...
|
|
JPS59103415A |
PURPOSE: To change the gain of a filter itself by changing over a switch so as to change the value of the charger transfer capacity. CONSTITUTION: Series circuits of a capacitor C0 and a capacitor selecting switch S0, capacitors C1, C2 a...
|
|
JPS59100613A |
PURPOSE: To attain easily circuit integration by providing a sample-and-hold circuit, a delay circuit and a weight coefficient generator so as to decrease the number of capacitors even if the number of kinds of filter characteristic vari...
|
|
JPS5992614A |
PURPOSE: To obtain a small-sized tertiary low-pass filter with low power consumption by using switching capacitor circuits as resistance elements of an impedance converting circuit (FDIC circuit) having frequency dependency. CONSTITUTION...
|
