S-8120ANP Datasheet, PDF (4/9 Pages) Seiko Instruments Inc – LOW-VOLTAGE C-MOS HIGH-PRECISION TEMPERATURE SENSOR IC

S-8120ANP ver.1.1
LOW-VOLTAGE C-MOS HIGH-PRECISION TEMPERATURE SENSOR
S-8120ANP
n Definition of terms
1. Output voltage ( Vout )
Output voltage Vout is defined as the voltage
between measured pin-4 and Vss.
Vout is linearly proportional to ambient
temperature.
S-8120AMP is tested for Vout at -30°C,+30°C
and +100°C.
Output voltage Vout
max.
min.
2. Temperature sensitivity ( Vse )
Temperature sensitivity Vse is defined as the
average slope of the Vout versus Ta curve using
the following formula.
Vse = ^{{Vout ( + 100) − Vout ( − 30)}}
130
Vout(+100) : Output voltage at Ta=+100°C
Vout( - 30) : Output voltage at Ta= - 30°C
-30°C
0°C
+30°C
Ambient temperature Ta
+100°C
Output voltage Vout
Vout(-30)
slope : Temperature sensitivity
Vout(+100)
3. Nonlinearity NL
Nonlinearity NL is defined as the deviation
of the Vout versus Ta curve from the best-fit
straight line over the device’s rated temperature
range.
a
∆ NL = ~100
b
a : The maximum deviation of the Vout vs.
Ta curve from the best-fit straight line
between - 20°C and +80°C.
b : The difference of the output voltage
between - 20°C and +80°C.
-30°C
0°C +30°
Ambient temperature Ta
+100°C
Output voltage Vout
a
Vout(-20)
Vout vs. Ta curve
b
a
Vout(+80)
a
Best-fit
straight line
-20°C 0°C
+80°C
Ambient temperature Ta
Seiko Instruments Inc.
3