Three-path current frequency conversion circuit without comparator
A current-frequency conversion and circuit technology, applied in the direction of logic circuit, logic circuit interface device, logic circuit connection/interface layout, etc., can solve the problems of high power consumption and complex structure, achieve simplified circuit design, improve accuracy and stability , the effect of wide application
Active Publication Date: 2020-12-29
XIAN MICROELECTRONICS TECH INST
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the disadvantages of high power consumption and complex structure in the existing three-way current-frequency conversion circuit, and provide a three-way current-frequency conversion circuit without a comparator
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[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0026] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...
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The invention discloses a three-path current frequency conversion circuit without a comparator, and belongs to the field of semiconductor hybrid integrated circuits. According to the three-path current frequency conversion circuit without the comparator, integral signals output by an integrator circuit have two output modes, the first mode is that the integral signals are output to a signal control end of a logic controller, level judgment and comparison are carried out by means of TTL threshold voltage of the logic controller, and replacement of the first path of comparator is achieved; and the second mode is that the signals are output to a level adjusting network composed of resistors R1 and R2 and an inverter U2, output signals passing through the network are input to a signal controlend of the logic controller, and replacement of a second comparator is achieved. According to the three-path current frequency conversion circuit, six-path comparator circuits can be replaced, the amplitude of the integral voltage signals can be conveniently adjusted according to the requirements of different circuits, the precision and the stability of the current frequency conversion circuit canbe improved, the power consumption of the circuit is reduced, and the circuit design is simplified.
Description
technical field [0001] The invention belongs to the field of semiconductor hybrid integrated circuits, in particular to a three-way current-frequency conversion circuit without a comparator. Background technique [0002] The current / frequency conversion (I / F) circuit is a conversion circuit that digitizes the current signal. It is often used in navigation control systems to convert the output current of the accelerometer into pulse output or other occasions that require high-precision analog / digital conversion. Since the output of the accelerometer meter is a current analog signal, it must be converted into a digital signal through the I / F circuit before it can be processed by the computer in the inertial navigation system. [0003] see figure 1 , The traditional I / F conversion circuit consists of five parts: integrator circuit, comparator circuit, logic controller, switch circuit and positive and negative constant current sources. With the development of miniaturization a...
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Login to View More IPC IPC(8): H03K19/018
CPCH03K19/017509H03K19/01806Y02B70/10
Inventor 黄征李锦涛郑东飞黄华
Owner XIAN MICROELECTRONICS TECH INST