ETC TC03

PRECISION TEMPERATURETO -VOLTAGE CONVERTERS
TC02
TC02
TC03
TC03
PRECISION TEMPERATURE-TO-VOLTAGE CONVERTERS
FEATURES
GENERAL DESCRIPTION
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The TC02/03 temperature sensors furnish a linearized
output voltage directly proportional to measured temperature. The TC03 has a temperature measurement range of
– 20°C to +100°C. Its output voltage is directly calibrated in
degrees Centigrade (i.e. VOUT = 10mV/°C x Temperature
°C). An external pull-down resistor to a negative voltage
source is required for temperature measurement below
0°C.
The TC02 has a temperature measurement range of
– 20°C to +125°C, and operates with a single supply. It has
the same output voltage slope with temperature as the
TC03 (10mV/°C). The output voltage range is 300mV at
– 20°C to 1,750mV at +125°C.
Small size, low cost and low power operation make the
TC02/03 suitable for a wide range of general purpose
temperature measurement applications.
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Linearized Temperature-to-Voltage Converters
Direct Centigrade Output Voltage Scaling (TC03)
Wide Temperature Measurement
Range (TC02) ............................... – 20°C to +125°C
Excellent Temperature Converter Linearity .. 0.8°C
Over Temperature
High Temperature Converter Accuracy .......... ±2°C
at 25°C Guaranteed
Small Packages ................ TO-92-3 and SOT-23B-3
APPLICATIONS
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Power Supply Thermal Shut-Down
Temperature-Controlled Fans
Temperature Measurement/Instrumentation
Temperature Regulators
Consumer Electronics
FUNCTIONAL BLOCK DIAGRAM
ORDERING INFORMATION
Part No.
Package
Output
Voltage
At 25°C
TC02VNB
*TC02VZB
TC03VNB
TC03VZB
SOT-23B-3
TO-92
SOT-23B-3
TO-92
750mV
750mV
250mV
250mV
Temp. Range
– 20°C to +125°C
– 20°C to +125°C
– 20°C to +100°C
– 20°C to +100°C
* Contact factory for availability.
.
PIN CONFIGURATION
VCC = 2.2V to 12V
MICROCONTROLLER
VCC
*SOT-23B-3
(Top View)
TO-92-3
1 2 3
A/D
CONVERTER
GND
VOUT
TC03
3
GND
TC02VZB
TC03VZB
VCC
VOUT
NOTE: *SOT-23B-3 is equivalent
to JEDEC (TO-236)
TC02/03-2 7/10/97
TelCom Semiconductor reserves the right to make changes in the circuitry and specifications
of its devices.
1
GND
2
VOUT
1
VCC
TC02VNB
TC03VNB
PRECISION TEMPERATURETO -VOLTAGE CONVERTERS
TC02
TC03
ABSOLUTE MAXIMUM RATINGS *
* Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. 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 operational sections of the specifications is not implied.
Exposure to Absolute Maximum Rating Conditions for extended periods
may affect device reliability.
Supply Voltage ............................................................15V
Input Voltage, Any Terminal .............. – 1.0 to (VCC +0.3V)
Operating Temperature (TC02) ............. – 20°C to +125°C
Operating Temperature (TC03) ............. – 20°C to +100°C
Storage Temperature ............................ – 55°C to +150°C
Lead Temperature (Soldering, 10 sec)
SOT-23B-3 ..................................................... +260°C
TO-92-3 .......................................................... +300°C
ELECTRICAL CHARACTERISTICS : TA = – 20°C to +125°C, VCC = 5V ±5%, unless otherwise specified.
Symbol
Parameter
VCC
VCC
IS
ISRC
Supply Voltage (TC02)
Supply Voltage (TC03)
Supply Current
VOUT Output Source Current
Accuracy at Room Temperature
Accuracy at Minimum Temperature
Accuracy at Maximum Temperature
AV
VOUTMAX
Nonlinearity
Line Regulation
Average Slope of Output Voltage
Maximum Output Voltage
Test Conditions
Note 1
TA = 25°C (Note 2)
TA = – 20°C
(Note 2)
TC02: TA = +125°C
TC03: TA = +100°C
(Note 2)
Note 3, 4
TC02: 3.0V ≤ VCC ≤ 12V
TC03: 2.2V ≤ VCC ≤ 12V
(Note 1)
Min
Typ
Max
Unit
3.0
2.2
—
—
–2
—
—
—
40
—
± 0.5
±3
12
12
60
1.0
+2
—
V
V
µA
mA
°C
°C
–3
–3
—
—
+3
+3
°C
– 0.8
—
—
—
80
10
+0.8
—
—
°C
µV/V
mV/°C
—
—
VCC – 1.2
V
Notes: 1. VOUT outputs open circuited.
2. Accuracy = Difference between calculated output voltage (10mV/°C x Device case temperature at specified temperature and power supply)
and measured output voltage expressed in °C.
3. Nonlinearity = deviation of output voltage versus temperature from the best-fit straight line over the device rated temperature range.
4. Guaranteed by design.
DETAILED DESCRIPTION
OUTPUT STAGE
A plot of output voltage versus temperature for both the
TC02 and TC03 appears in Figure 1. The TC03 can be
used with single power supply to measure temperatures
from 0°C to 100°C. A pull-down resistor (R1 in Figure 2)
must be added from VOUT to the negative power supply for
measuring temperatures less than 0°C. The value of the
resistor must be chosen to limit the maximum current
pulled from the output to the negative supply to
– 50µA (i.e. R1 = VSS/50µA).
Both the TC02 and TC03 have Class A output stages
capable of sourcing 1mA. These devices have a limited
ability to drive heavy capacitive loads. Loads of 50pF (to
ground) can be driven directly. For heavier loads, a 2kΩ (or
greater) resistor should be placed in series with the output
for decoupling. If the TC02/03 is used in a noisy electrical
environment, a 0.1µF bypass capacitor from VCC to GND is
recommended.
TC02/03-2 7/10/97
2
PRECISION TEMPERATURETO -VOLTAGE CONVERTERS
TC02
TC03
1.8
1.7
1.6
TC02: VOUT = (10mV/°C) (Temperature °C) + 500mV
TC03: VOUT = (10mV/°C) (Temperature °C)
1.5
1.4
1.3
1.2
VOUT (VOLTS)
1.1
TC02
1.0
0.9
0.8
0.7
TC03
0.6
0.5
0.4
0.3
0.2
0.1
0
– 0.1
– 0.2
– 40
– 30
– 20
0
–10
10
20
30
40
50
60
70
80
90
100
110
120
TEMPERATURE (°C)
Figure 1. Output Voltage vs Temperature
VCC = 2.2V to 12.0V MIN.
VCC = 3.0V to 12.0V
VCC
TC03
VCC
GND
VOUT
VOUT
VOUT
TC02
R1
GND
R1 = VSS/50µA
VSS
TC02 (– 20°C to +125°C)
TC03 (– 20°C to +100°C)
Figure 2. TC02/03 Power Supply Connections for Full Scale Measurements
TC02/03-2 7/10/97
3
VOUT
130
PRECISION TEMPERATURETO -VOLTAGE CONVERTERS
TC02
TC03
TYPICAL CHARACTERISTICS
Supply Current vs.
Temperature
Thermal Time Constant
(Sec) vs. Air Velocity
60
100
50
80
THERMAL TIME (SEC)
SUPPLY CURRENT (µA)
VCC= +5V
60
40
20
10
–50
40
30
20
10
0
–25
0
25
50
75
100 125
0
400
600
125
100
2V/DIV
75
0V
50
500mV/DIV
25
0V
0
0
20
40
60
80
100
TIME (SEC.)
TC02/03-2 7/10/97
800
1000
VOUT (From Power Initially Applied)
vs. Time (Turn-on Response)
Thermal Response
in Still Air vs.Time
PERCENT OF FINAL VALUE (%)
200
AIR VELOCITY (FPM)
TEMPERATURE (°C)
20µsec/DIV
4
PRECISION TEMPERATURETO -VOLTAGE CONVERTERS
TC02
TC03
MARKING
TO-92-3
SOT-23B-3
1 2 3 4 5
6 7 8 9 10
11 12 13 14 15
a & b = part number code and temperature range
TC02VNB = AA – 20°C to 125°C
TC03VNB = AB – 20°C to 100°C
a & b = TC (fixed)
c, d & e = blank
f, g, h & i = part number
A A
ex: 02 = uuuu
A B
ex: 03 = uuuu
j = temperature range
C = – 20°C to +125°C
D = – 20°C to +100°C
c = year and quarter
d = lot ID
k, l, m, n & o = traceability code
TAPING FORMS
SOT-23B-3
PIN 1
User Direction of Feed
User Direction of Feed
Device
Marking
W
Device
Marking
PIN 1
P
Reverse Reel Component Orientation
for 723 or RT Suffix Device
(Mark Upside Down)
Standard Reel Component Orientation
for 713 or TR Suffix Device
(Mark Right Side Up)
Tape & Reel Specifications Table
Package
3L SOT-23B
TC02/03-2 7/10/97
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
8 mm
4 mm
3000
7
5
PRECISION TEMPERATURETO -VOLTAGE CONVERTERS
TC02
TC03
TAPING FORMS (Cont.)
Component Taping Orientation for TO-92
User Direction of Feed
P
Mark
Face
MARK
FACE
MARK
FACE
MARK
FACE
Seal
Tape
W
Back
Tape
User Direction of Feed
P
Mark
Face
MARK
FACE
MARK
FACE
MARK
FACE
Seal
Tape
W
Back
Tape
Standard Reel Component Orientation
for 713 or TR Suffix Device
Reverse Reel Component Orientation
for 723 or RT Suffix Device
Tape & Reel Specifications Table
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
TO-92-3
18 mm
12.7 mm
2000
13
TC02/03-2 7/10/97
6
PRECISION TEMPERATURETO -VOLTAGE CONVERTERS
TC02
TC03
PACKAGE DIMENSIONS
*SOT-23B-3
.021 (0.54)
.015 (0.37)
.055 (1.40)
.047 (1.20)
.103 (2.64)
.083 (2.10)
.040 (0.60)
.017 (0.44)
.120 (3.05)
.105 (2.67)
.040 (1.02)
.031 (0.79)
.007 (0.18)
.003 (0.085)
8° MAX.
.004 (0.10)
.001(0.02)
.080 (2.05)
.070 (1.78)
.010 (0.25)
.005 (0.13)
*NOTE: SOT-23B-3 is equivalent to JEDEC (TO-236)
TO-92-3
.165 (4.19)
.125 (3.18)
.210 (5.33)
.170 (4.32)
.500
(12.70)
MIN.
.205 (5.21)
.175 (4.45)
.105 (2.67)
.080 (2.03)
.105 (2.67)
.095 (2.41)
.018 (0.46)
.015 (0.38)
.135
(3.43)
MIN.
.055 (1.40)
.045 (1.14)
.018 (0.46)
.015 (0.38)
Dimensions: inches (mm)
Sales Offices
TelCom Semiconductor
1300 Terra Bella Avenue
P.O. Box 7267
Mountain View, CA 94039-7267
TEL: 650-968-9241
FAX: 650-967-1590
E-Mail: [email protected]
TC02/03-2 7/10/97
TelCom Semiconductor
Austin Product Center
9101 Burnet Rd. Suite 214
Austin, TX 78758
TEL: 512-873-7100
FAX: 512-873-8236
7
TelCom Semiconductor H.K. Ltd.
10 Sam Chuk Street, Ground Floor
San Po Kong, Kowloon
Hong Kong
TEL: 852-2324-0122
FAX: 852-2354-9957
Printed in the U.S.A