[Southwest Petroleum University] Integrated Circuit Application Experimental Device

[Integrated Circuit Application Experimental Device]

Function, role introduction

Introduction

In order to systematically cultivate students' electronic technology experiment ability, a two-level practical course system of "Electronic Technology Comprehensive Experiment" and "Integrated Circuit Application Experiment" was constructed. The "Integrated Circuit Application Experiment" course is based on analog/digital electronic technology, modern electronic technology, single-chip technology, programmable logic device technology, computer bus technology and other theories. It is a comprehensive and designed experimental project from the field of engineering practice. As the core, train students to master the working principle and testing, debugging and design methods of various typical integrated circuit engineering practical modules, focusing on cultivating students' engineering practice ability and innovation consciousness.

The integrated circuit application experimental device consists of an experimental box and 9 experimental modules. It can complete 9 integrated or design experimental projects. It can also easily expand the experimental project content and develop new experimental projects according to needs.

(1) Experiment box

The experiment box contains common power supply, signal generator, digital logic pen, common integrated circuit socket interface, dial switch, indicator light, digital display, etc. It has perfect experimental circuit interface and safety protection function, and can be completed with different experimental modules. Experimental content. The experiment box can meet the needs of regular teaching, and can also meet the higher requirements of curriculum design and expansion of experimental content.

(2) "Integrated Operational Amplifier" Experiment Module

Function: By testing and comparing the parameters of three different types of operational amplifiers, such as general op amp μA741, low offset low temperature drift op amp OP07, high speed op amp OP37, the experimenter is familiar with the definition and value of the main parameters of the integrated op amp, integrated operation Test method for each parameter of the amplifier.

Experimental content: Experimentally test 7 parameters of 3 kinds of devices: transmission characteristics of operation amplifier and dynamic range of output voltage; open-loop voltage amplification factor Auo; input offset voltage UIO; input offset current IIO; common mode rejection ratio KCMR; gain- Bandwidth product; conversion rate SR.

(3) "Voice Amplifier Circuit" Experiment Module

Function: The low frequency signal converted by the sensor signal is processed, amplified, and then sent to the speaker, which is composed of a preamplifier, an active broadband band pass filter, a power amplifier and other unit circuits, a preamplifier and an active band pass. The filter is implemented with an integrated operational amplifier, and the power amplifier is successfully implemented using the TDA2003 set. Through the experiment, master the test methods of each circuit technical index.

Experimental content: Test circuit technical indicators, including: preamplifier (Aud, Auc, KCMR and Rid); active bandpass filter (BW, plot amplitude frequency characteristic curve); power amplifier (Pom, Pv, η, Au) .

(4) "LED scanning circuit" experiment module

Function: Based on the scanning display principle of multi-digit LED digital tube, it can realize static display and dynamic scanning.

Experimental content: The static display experiment part completes the static display principle verification of multiple LEDs; the dynamic scanning experiment part completes the dynamic scanning principle verification and scanning circuit design of multi-bit LED.

(5) "Instrument Amplifier" Experiment Module

Function: The experimental module consists of two parts. The amplifier part of the three op amps consists of three high-performance single op amps that form a two-terminal input-single-ended output differential amplifier circuit; the integrated instrument amplifier application part, including AD524, AD620, AD621, etc. Low power amplifier. Through the experiment to master the basic structure and characteristics of the operational amplifier, the application of the operational amplifier in the sensor signal processing is clarified.

Experimental content: Instrumentation amplifier (three op amps) characteristic test; integrated instrumentation amplifier application, using the integrated instrument amplifier to amplify the thermocouple (or thermal resistance) temperature measurement signal.

(6) "function generator" experiment module

Function: With the voltage control oscillation integrated circuit MAX038 as the core, with various adjustment circuits, the functions of coarse and fine adjustment of the general function generator, duty cycle adjustment, amplitude adjustment and level shift adjustment can be realized. Control experiments such as oscillation, frequency sweep and frequency modulation.

Experimental content: Function generator characteristic test, plus signal source combination to complete the sweep frequency and frequency modulation experiment.

(7) "Multi-channel data acquisition system" experimental module

Function: Use ADC0809 to complete the 8 channel analog voltage signal tour acquisition. The data is collected by LED digital tube and LED simultaneously for decimal and binary display. The A/D conversion start and channel switching are respectively controlled by the channel selection key and the sampling key, and the conversion result is sent to the display. Through experiments, master the working principle of ADC0809 and control circuit design method, the concept of multi-channel data tour acquisition, and the test method of A/D converter conversion error.

Experimental content: Mainly test the A/D conversion error of 8 channels.

(8) "Stepper motor drive control circuit" experimental module

Function: This module is a new type of stepping motor drive control circuit, which can be used to observe and measure the running condition of stepping motor, measure the step angle of four-phase stepping motor and so on.

Experimental content: Four-phase stepping motor operation measurement and observation, measuring the step angle of four-phase stepping motor, three-phase stepping motor operation measurement and observation, etc.; designing stepper motor drive control system, building power amplifier circuit, etc.

(9) "Small power wireless transceiver system" experimental module

Function: Enables the experimenter to master the basic principles and application methods of the low-power radio transmitting and receiving module, master the principle and application of the integrated digital encoder and decoder, learn the use of high-frequency electronic instruments, and understand the low-power digital wireless transceiver. The design principle of the system.

Experimental content: test the transmission frequency of the experimental device; observe the waveform of PT2262 parallel digital input to serial output and PT2272 digital serial input to parallel output; use LED to replace the existing components of electrical equipment and experimental device to complete wireless transmission and reception Design task.

(10) "CPLD Development System" experiment module

Function: This module is a complex programmable logic device development system designed by ALTERA's MAX EPM7128STC100 chip.

Experimental content: Design and implement multiple digital circuit systems, including 2 simple circuits: adder, 7-segment LED digital tube dynamic scanning display circuit; 2 complex circuits: counting display, hardware self-test circuit; 2 selected circuits: Simple electronic stopwatch, numeric keypad with shift display, etc.

Title: Integrated Circuit Application Experiment Device

Completed by: Southwest Petroleum University