Saturday, 1 March 2014

MCP9700-9700A-MCP9700E Temperature Sensor Description Datasheet PDF

            The MCP9700/9700A/MCP9700E and MCP9701/9701A family of Linear Active Thermistor™ Intergrated Circuit (IC) is an analog temperature sensor that converts temperature to analog voltage. It’s a low-cost, low-power sensor with an accuracy of ±2°C from 0°C to +70°C (MCP9700A/9701A) ±4°C from 0°C to +70°C (MCP9700/9701) while consuming 6 μA (typ.) of operating current.

            Unlike resistive sensors (such as thermistors), the Linear Active Thermistor IC does not require an additional signal-conditioning circuit. Therefore, the biasing circuit development overhead for thermistor solutions can be avoided by implementing this low-cost device. The voltage output pin (VOUT) can be directly connected to the ADC input of a microcontroller.

Sensor Transfer Function:
  Vout= (Tc * Ta) + V(0`c)
where,
            Vout= Output Voltage
            Tc = Temperature Coefficient = 10.0
            Ta = Ambient Temperature (environment temperature)
            V(0`c) = Voltage at 0`C (500-502mv typical)

Characteristics:
·         Tiny Analog Temperature Sensor
·         Available Packages: SC-70-5, TO-92-3
·         Wide Temperature Measurement Range: -40°C to +125°C
·         Accuracy: ±2°C (max.), 0°C to +70°C (MCP9700A/9701A)
·         Optimized for Analog-to-Digital Converters (ADCs): 10.0 mV/°C (typ.) MCP9700/9700A
·         Output range : 100mV to 1.75V


Typical Circuit & Pin Diagram:




Coming up soon……
                   INTERFACING MCP9700 WITH AVR ATMEGA16 MICROCONTROLLER
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