S-8120ANP datasheet(4/9 Pages) SII

4 / 9 page

S-8120ANP ver.1.1

Seiko Instruments Inc.

LOW-VOLTAGE C-MOS HIGH-PRECISION TEMPERATURE SENSOR

S-8120ANP

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.

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

130

Vout(+100) : Output voltage at Ta=+100

°C

Vout( - 30) : Output voltage at Ta= - 30

°C

3. Nonlinearity

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.

∆ NL

= ~100

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.

Vout(-30)

Vout(+100)

°C

+100

°C

+30

slope : Temperature sensitivity

-30

°C

Output voltage Vout

Ambient temperature Ta

Output voltage Vout

Ambient temperature Ta

Vout(-20)

Vout(+80)

°C

+80

°C

Vout vs. Ta curve

Best-fit

straight line

-20

°C

Output voltage Vout

°C

+100

°C

max.

min.

+30

°C

Ambient temperature Ta

-30

°C

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