MCP9700/9700A MCP9701/9701A
Low-Power Linear Active Thermistor™ ICs
FEATURES:
• 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)
- ±4°C (max.), 0°C to +70°C (MCP9700/9701)
• Optimized for Analog-to-Digital Converters (ADCs):
- 10.0 mV/°C (typ.) MCP9700/9700A - 19.5 mV/°C (typ.) MCP9701/9701A
• Wide Operating Voltage Range:
- VDD = 2.3V to 5.5V MCP9700/9700A
- VDD = 3.1V to 5.5V MCP9701/9701A
• Low Operating Current: 6 µA (typ.)
• Optimized to Drive Large Capacitive Loads
Typical Applications
• Hard Disk Drives and Other PC Peripherals
• Entertainment Systems
• Home Appliance
• Office Equipment
• Battery Packs and Portable Equipment
• General Purpose Temperature Monitoring

General Description

The MCP9700/9700A 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. The MCP9700/9700A and MCP9701/9701A temperature coefficients are scaled to provide a 1°C/bit resolution for an 8-bit ADC with a reference voltage of 2.5V and 5V, respectively.