OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

TC14433AELI713

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
© 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
•Z
IN
> 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
V
DD
Q
3
Q
2
Q
1
Q
0
DS
1
DS
3
DS
2
DS
4
EOC
OR
R
1
C
1
CO
1
CO
2
R
1
/C
1
CLK0
CLK1
DU
V
EE
V
SS
V
AG
V
X
V
REF
TC14433/A
24-Pin PDIP (Wide)
24-Pin SOIC (Wide)
V
REF
NC
V
DD
Q
3
Q
1
Q
0
DS
2
DS
3
DS
1
DS
4
Q
2
V
AG
V
X
CO
1
V
EE
CO
2
R
1
/C
1
C
1
R
1
V
SS
EOC
NC NC
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 2628
16
28-Pin PLCC
OR
3-1/2 Digit, Analog-to-Digital Converter
TC14433/A
DS21394D-page 2 © 2008 Microchip Technology Inc.
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
R
1
*
V
X
20 kΩ
D
C
S
R
TC14433
Q
Q
D
C
S
R
+5V
-5V
16
+5V
+5V
Segment
Resistors
150Ω
(7)
+5V
Q
Q
-5V
-5V
-5V
-5V
8
Minus Sign
200Ω
51 kΩ
6
7
+5V
-5V
-5V
-5V
MPS-A12
(4)
Common
Anode Led
Display
MPS-A12
300
R
C
14013B
5
3
9
11
1
2
13
12
6
7
1410
fgedcba
+5V
1µF
4
8
DS
4
DS
3
DS
2
DS
1
-5V
MCP1525
4543B
1413
V
IN
V
OUT
V
SS
Plus Sign
110 Ω
1µF
0.1 µF**
0.1 µF**
kΩ
0.1 µF
0.1 µF
0.1 µF
50 µF
*R
1
= 470 kΩ for 2V Range
*R
1
= 27 kΩ for 200 mV Range
**Mylar Capacitor
© 2008 Microchip Technology Inc. DS21394D-page 3
TC14433/A
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings†
Supply Voltage (V
DD
– V
EE
)................... -0.5V to +18V
Voltage on Any Pin:
Reference to V
EE
.....................-0.5V to (V
DD
+ 0.5)
DC Current, Any Pin: .......................................±10 mA
Power Dissipation (T
A
≤ 70°C):
Plastic PLCC .................................................1.0W
Plastic PDIP..............................................940 mW
SOIC.........................................................940 mW
Operating Temperature Range ............-40°C to +85°C
Storage Temperature Range..............-65°C to +160°C
† Notice: Stresses above those listed under “Absolute
Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only and functional
operation of the device at these or any other conditions
above those indicated in the operation sections of the
specifications is not implied. Exposure to Absolute
Maximum Rating conditions for extended periods may
affect device reliability.
TC14433/A ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise specified, V
DD
= +5V, V
EE
= -5V, C
1
= 0.1 µF, (Mylar), C
0
= 0.1 µF,
R
C
= 300 kΩ, R
1
= 470 kΩ @ V
REF
= 2V, R
1
= 27 kΩ @ V
REF
= 200 mV, T
A
= +25°C.
Parameter Symbol Min Typ Max Min Typ Max Units Test Conditions
Analog Input
Rollover Error (Positive) and
Negative Full Scale
Symmetry
SYE -1 — +1 — — — Counts 200 mV Full Scale
V
IN
-V
IN
= +V
IN
Linearity Output Reading
(Note 1)
NL -0.05 +0.05 +0.05 — — — %rdg V
REF
= 2V
-1 count — +1 count — — — %rdg V
REF
= 200 mV
Stability Output Reading
(Note 2)
SOR — — 2 — — — LSD V
X
= 1.99V,
V
REF
= 2V
—— 3 ———LSDV
X
= 199 mV,
V
REF
= 200 mV
Zero Output Reading ZOR — 0 0 — — — LSD V
X
= 0V, V
REF
= 2V
Bias Current: Analog Input
Reference Input
Analog Ground
I
IN
— ±20 ±100 — — — pA
— ±20 ±100 — — — pA
— ±20 ±100 — — — pA
Common mode Rejection CMRR — 65 — — — — dB V
X
= 1.4V, V
REF
= 2V,
F
OC
= 32 kHz
Note 1: Accuracy – The accuracy of the meter at full scale is the accuracy of the setting of the reference voltage. Zero is
recalculated during each conversion cycle. The meaningful specification is linearity. In other words, the deviation from
correct reading for all inputs other than positive full scale and zero is defined as the linearity specification.
2: The LSD stability for 200 mV scale is defined as the range that the LSD will occupy 95% of the time.
3: Pin numbers refer to 24-pin PDIP.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

TC14433AELI713

Mfr. #:
Buy TC14433AELI713
Manufacturer:
Microchip Technology
Description:
LED Display Drivers 3-1/2 Digit A/D BCD
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet