MCP9700 datasheet(8/18 Pages) MICROCHIP

부품명	MCP9700

상세설명	Low-Power Voltage Output Temperature Sensor

PDF	18 Pages

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MCP9700/01

DS21942A-page 8

3.0

FUNCTIONAL DESCRIPTION

The MCP9700/01 temperature sensing element is

essentially a P-N junction or a diode. The diode electri-

cal characteristics has a temperature coefficient that

provides a change in voltage based on the relative

ambient temperature from -40°C to 125°C. The change

in voltage is scaled to a temperature coefficient of

10.0 mV/°C (typ.) for the MCP9700 and 19.5 mV/°C

(typ.) for the MCP9701. The output voltage at 0°C is

also scaled to 500 mV (typ.) and 400 mV (typ.) for the

MCP9700 and MCP9701, respectively. This linear

scale is described in the transfer function shown in

Equation 3-1.

EQUATION 3-1:

SENSOR TRANSFER

FUNCTION

OUT

°C

•

Where:

= Ambient Temperature

VOUT = Sensor Output Voltage

V0°C = Sensor Output Voltage at 0°C

TC1 = Temperature Coefficient

MCP9700 데이터시트(PDF) 8 Page - Microchip Technology