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參數資料
| 型號： | TC14433TELI |
| 元件分類： | ADC |
| 英文描述： | 1-CH DUAL-SLOPE ADC, PQCC28 |
| 封裝： | PLASTIC, LCC-28 |
| 文件頁數： | 1/24頁 |
| 文件大小： | 382K |
| 代理商： | TC14433TELI |
2008 Microchip Technology Inc.
DS21394D-page 1
TC14433/A
Features:
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: ±4.5V to ±8V
Applications:
Portable Instruments
Digital Voltmeters
Digital Panel Meters
Digital Scales
Digital Thermometers
Remote A/D Sensing Systems
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 4 mW, approximately one-
half that of the industry standard TC14433.
The TC14433/A is available in 24-Pin PDIP, 24-Pin
SOIC (TC14433 device only), and 28-Pin PLCC
packages.
Package Type
Note 1:
NC = No internal connection (In 28-Pin PLCC).
2:
24-Pin SOIC (Wide) package, only for TC14433
device.
1
2
3
4
16
15
14
5
6
7
8
13
19
18
17
9
10
11
12
20
21
22
23
24 VDD
Q3
Q2
Q1
Q0
DS1
DS3
DS2
DS4
EOC
OR
R1
C1
CO1
CO2
R1/C1
CLK0
CLK1
DU
VEE
VSS
VAG
VX
VREF
TC14433/A
24-Pin PDIP (Wide)
24-Pin SOIC (Wide)
V
REF
NC
V
DD
Q
3
Q1
Q0
DS2
DS3
DS1
DS4
Q
2
V
AG
V
X
CO1
V
EE
CO2
R1/C1
C1
R1
V
SS
EOC
NC
DU
CLK0
CLK1
19
20
21
22
23
24
25
11
10
9
8
7
6
5
TC14433/A
12 13 14 15
17 18
4
3
2
1
27 26
28
16
28-Pin PLCC
OR
3-1/2 Digit, Analog-to-Digital Converter
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