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TC14433 Datasheet(PDF) 2 Page - Microchip Technology

Part # TC14433
Description  3-1/2 Digit, Analog-to-Digital Converter
PDF  20 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC14433 Datasheet(HTML) 2 Page - Microchip Technology

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TC14433/A
DS21394B-page 2
© 2002 Microchip Technology Inc.
General Description
The TC14433 is a low power, high performance,
monolithic CMOS 3-1/2 digit A/D converter. The
TC14433 combines 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. The full scale
voltage range of this ratiometric IC 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.
The TC14433A features improved performance over
the industry standard TC14433. Rollover, which is the
measurement
of
identical
positive
and
negative
signals, is specified to have the same reading within
one count for the TC14433A. Power consumption of
the TC14433A is typically 4mW, approximately one-
half that of the industry standard TC14433.
The TC14433/A is available in 24-Pin PDIP, 24-Pin
CERDIP, 24-Pin SOIC (TC14433 device only), and
28-Pin PLCC packages.
Typical Application
3
1
4
5
6
7
8
23
22
21
20
13
9
14
15 19 18 17 16
11 10 2 12 24
4
2
3
5
9
10
11
12
13
14
15
1
7
6
5
4
3
2
1
10
11
12
13
14
15
16
0.1
µF**
0.1
µF
0.1
µF
50
µF
0.1
µF**
R1*
*R1 = 470kΩ for 2V Range
R1 = 27kΩ for 200mV Range
**Mylar Capacitor
VX
20k
D
C
S
R
TC14433
Q
Q
D
C
S
R
+5V
-5V
16
+5V
+5V
Segment
Resistors
150
Ω (7)
+5V
Q
Q
-5V
-5V
-5V
-5V
8
Minus Sign
200
Ω
51k
67
+5V
-5V
-5V
-5V
MPS-A12
(4)
Common
Anode Led
Display
MPS-A12
300k
RC
0.1
14013B
5
3
9
11
1
2
13
12
6
714
10
fgedcba
+5V
1
µF
1
µF
4
8
DS4
DS3
DS2
DS1
-5V
MCP1525
4543B
1413
VIN
VOUT
VSS
Plus Sign
110
Ω



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