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ASTEC Semiconductor
AS300
Shunt Temperature Sensor
Features
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Calibrated directly in Kelvin
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Linear 10 mV/¡C scale factor
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1¡C typical accuracy at 27¡C (300 K)
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Fully rated for Ð40 to 125¡C
(233 to 398 K)
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Suitable for remote applications
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Low-impedance output, 0.3 ½ for a
1 mA load
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Now available in the SOT-223 for
improved substrate temperature
sensing
Description
The AS300 is a two-terminal integrated circuit temperature sensor. It is
a precision-trimmed shunt type regulator that emulates a zener diode
in function. Its output voltage is linearly proportional to temperature in
Kelvin. The output voltage is calibrated for 3.000 V at 27¡C (300 K) and
increases by 10 mV/¡C.
The AS300 is available in four packages.The SOT-223 offers a large
heat-sink for transferring heat to the die for fast and accurate thermal
sensing. The SOT-223 is especially effective at sensing the tem-
perature of hybrid and MCM substrates. The SOT-23 is best-suited
for applications requiring a small footprint or precision force/sense
metering.
SEMICONDUCTOR
Pin Configuration Ñ Top view
Ordering Information
V
TEMP
TO-92 (LP) SOT-223 (G)
GND (F)
GND (S)
V
TEMP
GND (F)
GND (S)
SOIC (D)
N/C
N/C
V
TEMP
(F)
V
TEMP
(F)
GND (S)
GND (F)
N/C
N/C
1
2
3
4
8
7
6
5
SOT-23/3L (VS)
V
TEMP
GND
GND
Circuit Type:
Shunt Temperature Sensor
AS300 LP A
Packaging Option:
A
B
T
7
13
Package Style:
D
G
LP
VS
= Ammo Pack
= Bulk
= Tube
= Tape and Reel (7" Reel Dia)
= Tape and Reel (13" Reel Dia)
= SOIC
= SOT-223
= TO-92
= SOT-23/3L