SM6610 Datasheet, PDF (6/7 Pages) Nippon Precision Circuits Inc – CMOS Monolithic Analog Output Temperature Sensor IC

SM6610 series
TEMPERATURE ACCURACY, TEMPERATURE COEFFICIENT, AND LINEARITY
The SM6610 temperature coefficient is determined by the physical constants and the temperature of the circuit
structure used. It does not depend on the variation between devices due to manufacturing processes. The tem-
perature coefficient range from minimum to maximum is thus not caused by solid-state variations, but by the
temperature.
The temperature vs. output voltage characteristic is not linear. The temperature coefficient is small at low tem-
peratures (gentle gradient) and increases as the temperature gets higher (steep gradient). The temperature vs.
output voltage characteristic curve shape is roughly fixed, however, the characteristic does change slightly due
to the temperature accuracy of the device. The SM6610AH/BH have an accuracy of ± 5°C, and the
SM6610LH/MH have an accuracy of ± 3°C. The curve for the SM6610AH is shown below.
VOUT[V]
2.563
2.509
2.456
1.984
1.930
1.877
1.172
1.118
1.065
Tc max.
(−10.3mV/ C)
Temperature
coefficient
Tc typ.
(−10.7mV/ C)
Curve is roughly constant,
with slight variation
due to manufacutring process
(temperature accuracy)
−30 C
20 C 25 C 30 C
Tc min.
(−11.1mV/ C)
Output voltage(max.)
Output voltage(typ.)
Output voltage(min.)
Temperature
100 C
NIPPON PRECISION CIRCUITS INC.—6