Note: The information in this document is provided as a product overview only and is not intended to be used for design purposes. For complete
technical information, please refer to the product data sheet. The information in this document is subject to change without notice.
Andigilog, Inc. 2003
www.andigilog.com
70A03303-001
L
OW
-V
OLTAGE
SOT-23
T
EMPERATURE
S
ENSOR WITH
H
IGH
O
UTPUT
D
RIVE
aTS51
P
RODUCT
B
RIEF
General Description
The aTS51 is a high-precision CMOS temperature
sensor that provides a cost-effective solution for
applications requiring high-accuracy low-power
temperature monitoring. The aTS51 is ideally suited for
applications requiring high drive current. The aTS51
output voltage ramp is extremely linear and has a
positive slope of 10mV/C. With a supply voltage of
2.7V to 6V, the aTS51 is accurate to 1C over a
temperature range of
-
40C to 125C and has a typical
room temperature accuracy of 0.5C. Reducing the
supply voltage to 2.7V does not change the negative
and positive temperature extremes. As well, the
aTS51 does not require external calibration.
Calibration of each device is performed at the factory.
Features
=
Precision Calibrated to 1C at 25C
=
Low Output Impedance for 1mA Load
=
Temperature Range: -40C to 125C
=
Extremely Linear Output Ramp: 10mV/C
=
Output Ramp is Calibrated to Degrees Celsius
=
Low Operating Current:
130
A
=
Low Self Heating: 0.2C Typical in Still Air
=
Operating Voltage Range: +2.7V to +6V
=
Uses a Single Positive Supply
=
Non-linearity:
0.8
C
=
Low Profile SOT-23 Package
Applications
=
Mobile Communications
=
Computers and Peripherals
=
Battery Management
=
FAX Machines/Printers/Copiers
=
Portable Medical Instruments
=
HVAC, Power Supply Modules
=
Disk Drives
=
Automotive Control Circuits
Product Highlights
=
Accurate to +/- 1C At the typical temperature range (25C) the aTS51 is the most accurate temperature
sensor in its class.
=
High Output Drive The low impedance capability of the aTS51 enables the aTS51 to drive other components
within embedded applications.
=
Linear and Positive Output Ramp The aTS51 provides a simple 10mV/C output ramp with an offset of 500mV
at 0C making for a straightforward translation of voltage to temperature.
25
50
75
100
125
-25
-50 -40
0
1750
100
750
500
V
OUT
(mV)
Temperature (C)
1500
Temp (C) = (V
OUT
500mV) / 10mV/C
Output Voltage vs Temperature
25
50
75
100
125
-25
-50 -40
0
25
50
75
100
125
-25
-50 -40
0
1750
100
750
500
V
OUT
(mV)
Temperature (C)
1500
Temp (C) = (V
OUT
500mV) / 10mV/C
Output Voltage vs Temperature
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