8/8/2011
Electronic Component Data
Sheet
ET 150
In this presentation you will learn:
what information electronic component manufacturers’ data sheets
contain
how to read the specifications on manufacturers’ data sheets
how to convert a design from a schematic to a practical design
see designs based on commonly used integrated circuits
to read and interpret the data sheets of commonly used integrated
circuits
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8/8/2011
Manufacturer’s Data Sheets
Documentation published by electronic component manufacturers
that designers use when constructing circuits.
Data Sheet Information
General Description
Device Features
Typical Applications
Equivalent Circuits of IC’s
Device Connection diagrams (pinouts)
Maximum Ratings and Electrical Characteristics
Timing Diagrams for digital circuits
Design formulas
Typical Application Circuits
Typical Data Sheet Information
Example
LM555 Timer IC Manufactured by National Semiconductor (and others)
Summary of
key features
Explains the device Typical
function applications
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Typical Data Sheet Example
Connection Diagram
Relates the IC input and output leads from schematic
to pins on package. Shows package orientation.
(Where is pin 1?)
Notch
Pin 1 on device
package
Typical Data Sheet Example
Maximum Ratings Electrical Characteristics
Note supply voltage limits and power dissipation
Electrical Characteristics
gives details of other electrical
properties
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Typical Data Sheet Example
Design Formulas and Circuit Examples
Design formulas
Data sheets may also include
external component
Application Circuit Design range limits for device operation
Typical Data Sheet Example
Other Information
Graphical Design Tools
Typical Waveforms
(nomographs)
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LM555 Flasher Circuit
12V This circuit flashes an
LED twice a second.
Charging
RA, RB and C2 set
R2 R5
10k 2.2k
RA Flash rate
U1 150k
UA555
Gnd Vcc
Trg Dis
Out
Rst
Thr
Ctl
Charging path through
RB RA and RB
D1 270k
LED1 Discharging
C1 Discharging path through
+
C2
R1
1.2k
0.01uF
1uF RB only
Other Common Devices
The Operation Amplifier
OP AMP’s
Inverting Schematic Symbol
LM741 Connection Diagram Input
Non –Inverting
Input
Offset Null
Output
Offset Null
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Non--Inverting Amplifier
Non
Design LM741
Connection Diagram
Schematic Diagram
Audio Amplifier
LM386
Adjustable Gain 20-200
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8/8/2011
Audio Amplifier
LM386
Typical Circuit Application for the Data Sheet
Variable Speaker
Resistor
Components connected between pins 1 and 8 set gain
ET150
Coming Next: Ac Waveforms and Their
Measurement
ELECTRONIC COMPONENT
DATA SHEETS