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TC14433COG PDF预览

TC14433COG

更新时间: 2024-09-23 22:13:59
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TELCOM 转换器
页数 文件大小 规格书
10页 150K
描述
3-1/2 DIGIT A/D CONVERTERS

TC14433COG 数据手册

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3
TC14433  
TC14433A  
3-1/2 DIGIT A/D CONVERTERS  
GENERAL DESCRIPTION  
FEATURES  
The TC14433 is a low power, high-performance, mono-  
lithic CMOS 3-1/2 digit A/D converter. The TC14433 com-  
bines both analog and digital circuits on a single IC, thus  
minimizing the number of external components. This dual-  
slope A/D converter provides automatic polarity and zero  
correction with the addition of two external resistors and two  
capacitors. Thefull-scalevoltagerangeofthisratiometricIC  
extends from 199.9 millivolts to 1.999 volts. The TC14433  
can operate over a wide range of power supply voltages,  
including batteries and standard 5-volt supplies.  
Accuracy ...................±0.05% of Reading ±1 Count  
Two Voltage Ranges .............1.999V and 199.9 mV  
Up to 25 Conversions Per Second  
ZIN > 1000M Ohms  
Single Positive Voltage Reference  
Auto-Polarity and Auto-Zero  
Overrange and Underrange Signals Available  
Operates in Auto-Ranging Circuits  
Uses On-Chip System Clock or External Clock  
Wide Supply Range .................... e.g., ±4.5V to ±8V  
Package Available .................................. 24-Pin DIP  
24-Pin CerDIP, 28-Pin SOIC and 28-Pin PLCC  
The TC14433 will interface with the TC7211A LCD  
display driver.  
The TC14433A features improved performance over  
the industry standard TC14433. Rollover, which is the  
measurement of identical positive and negative signals, is  
guaranteed to have the same reading within one count for  
the TC14433A. Power consumption of the TC14433A is  
typically 4 mW, approximately one-half that of the industry  
standard TC14433.  
APPLICATIONS  
Portable Instruments  
Digital Voltmeters  
Digital Panel Meters  
Digital Scales  
Digital Thermometers  
Remote A/D Sensing Systems  
MPU Systems  
ORDERING INFORMATION  
Part No.  
Package  
Temp.Range  
See Application Notes 19 and 21  
TC14433AEJG  
TC14433AELI  
TC14433AEPG  
TC14433COG  
TC14433EJG  
TC14433ELI  
24-Pin CerDIP  
28-Pin PLCC  
– 40°C to +85°C  
– 40°C to +85°C  
24-Pin Plastic DIP – 40°C to +85°C  
24-Pin SOIC  
24-Pin CerDIP  
28-Pin PLCC  
0°C to +70°C  
– 40°C to +85°C  
– 40°C to +85°C  
TC14433EPG  
24-Pin Plastic DIP – 40°C to +85°C  
FUNCTIONAL BLOCK DIAGRAM  
20–23  
Q
–Q  
3
0
BCD DATA  
MULTIPLEXER  
16–19  
R
C
DS –DS  
DIGIT STROBE  
1
4
10  
11  
POLARITY DETECT  
LATCHES  
CLK1 CLK0  
CLOCK  
1'S  
10'S  
100'S  
1,000'S  
15  
OVERFLOW  
OVERRANGE  
OR  
2
1
3
REFERENCE VOLTAGE  
ANALOG GROUND  
ANALOG INPUT  
V
V
V
CMOS  
ANALOG  
SUBSYSTEM  
REF  
AG  
X
CONTROL  
LOGIC  
4
5
/C  
1
6
7
8
V
V
V
= PIN 24  
= PIN 13  
= PIN 12  
DD  
SS  
EE  
R
R
C
CO  
CO  
1
1
1
2
1
DISPLAY  
UPDATE  
END OF  
CONVERSION  
EOC  
9
DU  
14  
INTEGRATOR  
OFFSET  
TC14433/A-6 10/21/96  
TELCOM SEMICONDUCTOR, INC.  
3-127  

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