SU571896A1 - Analogue-digital converter - Google Patents

Description

(54) ANALOG-DIGITAL CONVERTER

  /;. L ,.; ,:,

The invention relates to the field of information and computer technology and can be used in linear and non-linear transformations of voltage to a binary position code with nanosecond

at times of conversion, as well as in radio stations dp of digital detection of video signals from a radio operator or intermediate frequency without conversion to an analog video signal.

A high-speed analogue of an “open transducer” (ADC) with a parallel structural circuit known as an ADC readout, containing comparators of the coincidence and anti-coincidence circuit, memory blocks and control C11, is known. Its disadvantage is complexity.

An A / D converter is also known, which contains a set of voltage dividers, a set of comparators ;, an anti-coincidence circuit, a permanent memory, a control circuit, an output register.

The speed of a known ADC is determined only by the delay of the signal at the comparator, the scheme of the apts, in the fixed memory 2. The disadvantage of such an ADC & s is relatively low speed and reliability.

The aim of the invention is to simplify the design and increase the reliability of the ADC.

The goal is achieved by the fact that in the ADC, which contains a unit for generating reference signals, is connected to a block of comparators, a block of anti-coincidence elements is connected to the first group of inputs of a permanent storage device, a reference voltage source, a control unit, and a voltage-phase converter connected to the input terminal of the analog-to-p converter, two power dividers, a modulator block and two shreds are introduced, with the first power splitter between the transformer output and the other input of the comparator the second power divider is connected between one of the outputs of the source of the reference voltage and the second group of inputs of a permanent storage device, the inputs of the modulator unit are connected to the comparators unit and the first key, and the outputs are connected to the anti-coincidence TDM element, the inputs of the first and second keys are connected respectively, with the outputs of the reference voltage source and the control unit, and the output of the second switch soy. It is connected with the input of the reference signal generation unit and the BTOpbJM input of the voltage-phase converter.

The drawing shows a structural scheme. MA ADC. The ADC contains the signal-generating unit 1 (iSTanoHHfalx phases of microwave oscillations), block 2 SSMBapSTOpOB, performed according to the comparison circuit of the microwave code, block 3 of the fallout elements, matrix permanent storage device 4, block 5 of the control unit of the OTPS, 4 octf of the opto-4 of the optomesf, octf octf, octf octfs, optoelectrones of the microwave oscillations; © Neither, input terminal 7 - convertible voltage, output terminal 8 of the digital code, block 9 modulators, converter 10 voltage to faeu, first divider 11 my microwave signal, first key 12 swarm key, 13, second divider 14 power Microwave signal. The ADC operates in the following way, With the conversion of the 7 transforming voltage and the input from the unit. 5 on the key 13 of the opening pulse, the converter 10 is triggered, which converts the amplitude of the microwave signal to the corresponding phase shift between the source signal 6 and the output signal of the amp converter, 1 which is distributed without distortion of the phase by the inputs of the comparator unit 2, the block simultaneously operates e-ticket signals 1, which in the second group of inputs of block 2 generates signals of equal amplitude but shifted in phase between adjacent inputs by the value of the ADC Discrete. Block 2 compares the phase of the signal from the priooraoovatel 10 with the reference phases of block i. In this case, those are triggered. Comparators of unit 2, the reference phases of the Cipnalobs II, which turned out to be smaller than the power PNP. After the key is turned off, Cha 13 1 is repeated 7 with the transfer of signals to the control unit 5, and the states of the comparator block 2 do not change. The output frames of the comparators of block 2 are visible pulses and are applied to the control inputs of the modulators of block 9. When turned on, the key 12 of the microwave source 6 oscillates to the input of all the modulators of block 9. The modulators of block 9 perform high-frequency comparators output-pulses Block 2. This is necessary for the operation of the elements a} of the coincidence of Block 2, which, like the comparators, work with radio pulse input signals. When two adjacent comparators of block 2 are located in opposite centers, then adjacent potentials of block 9. will have low potentials, which corresponds to logical 1 at input bpock 3 and high potential at the exit of anti-icing elements.

Claims (1)

When two neighboring comparators of block 2 are j in the same state, this corresponds to logical O and low potential at the output of block 3, the potential from the output of the anti-coincidence elements of block 3 goes to the inputs of the device 4, to the other inputs of which of source 6 through the second power divider 14 receive microwave signals. In this case, only that series of microwave diodes in the numerical bus that is connected to the anti-coincidence circuit, which is in the unit state, opens. Due to this, the respective outputs of the bit buses from the second power divider 14 are disconnected, and a forward or reverse binary code is formed at terminal 8. Claims An analog-to-digital converter comprising a signaling unit that generates a reference unit connected to a comparators unit, a block of anti-matching elements, connected to the first group of inputs of a permanent storage device, a reference voltage source, a control unit and a voltage converter1 phase connected to the input terminal An analog-to-digital converter, characterized in that, in order to simplify the design and increase reliability of operation, two power dividers, a modulator unit and two to In this case, the first power divider is connected between the output of the converter and another input of the comparators unit, the second power divider is switched on by one of the outputs of the reference voltage source and the second coarse input of the permanent storage device, the inputs of the modulator unit are connected to the comparator unit and the first key and the outputs to the block of anti-coincidence elements, the inputs of the first and second keys are connected to the outputs of the reference voltage source and the control unit, and the output of the second key is connected to the input of the block yrabotki etalo} - GOVERNMENTAL signal and the second input voltage transformation bodies Eken phase. Sources. information taken in the public opinion in the examination; 1. Shlnshn V. M. Digital measuring devices and transformers, M, Seeing school, 1973 p. 2, Foreign Radioelectronics, 1 1, 1975 p., Fig. 24