MCP9700AT-E/TT Microchip

MCP9700/9700A MCP9701/9701A Low-Power Linear Active Thermistor ICs Features General Description Tiny Analog Temperature Sensor MCP9700/9700A and MCP9701/9701A sensors with Linear Active Thermistor Integrated Circuit (IC) com- Available Packages: prise a family of analog temperature sensors that - SC70-5, SOT-23-3, TO-92-3 convert temperature to analog voltage. Wide Temperature Measurement Range: The low-cost, low-power sensors feature an accuracy - -40C to +125C (Extended Temperature) of 2C from 0C to +70C (MCP9700A/9701A) and - -40C to +150C (High Temperature) 4C from 0C to +70C (MCP9700/9701) while (MCP9700, SOT-23-3 and SC70-5 only) consuming 6 A (typical) of operating current. Accuracy: Unlike resistive sensors, e.g., thermistors, the Linear - 2C (max.), 0C to +70C (MCP9700A/9701A) Active Thermistor IC does not require an additional - 4C (max.), 0C to +70C (MCP9700/9701) signal-conditioning circuit. Therefore, the biasing circuit Optimized for Analog-to-Digital Converters (ADCs): development overhead for thermistor solutions can be - 10.0 mV/C (typical) (MCP9700/9700A) avoided by implementing a sensor from these low-cost devices. The Voltage Output pin (V ) can be directly OUT - 19.5 mV/C (typical) (MCP9701/9701A) connected to the ADC input of a microcontroller. The Wide Operating Voltage Range: MCP9700/9700A and MCP9701/9701A temperature -V = 2.3V to 5.5V (MCP9700/9700A) DD coefficients are scaled to provide a 1C/bit resolution -V = 3.1V to 5.5V (MCP9701/9701A) for an 8-bit ADC with a reference voltage of 2.5V and DD Low Operating Current: 6 A (typical) 5V, respectively. The MCP9700/9700A output 0.1C/bit for a 12-bit ADC with 4.096V reference. Optimized to Drive Large Capacitive Loads The MCP9700/9700A and MCP9701/9701A provide a Typical Applications low-cost solution for applications that require measure- ment of a relative change of temperature. When mea- Hard Disk Drives and Other PC Peripherals suring relative change in temperature from +25C, an Entertainment Systems accuracy of 1C (typical) can be realized from 0C to Home Appliance +70C. This accuracy can also be achieved by applying system calibration at +25C. Office Equipment Battery Packs and Portable Equipment In addition, this family of devices is immune to the effects of parasitic capacitance and can drive large General Purpose Temperature Monitoring capacitive loads. This provides printed circuit board (PCB) layout design flexibility by enabling the device to be remotely located from the microcontroller. Adding some capacitance at the output also helps the output transient response by reducing overshoots or undershoots. However, capacitive load is not required for the stability of sensor output. Package Types 3-Pin TO-92 3-Pin SOT-23 5-Pin SC70 MCP9700/9700A MCP9700/9700A MCP9700/9700A MCP9701/9701A MCP9701/9701A MCP9701/9701A GND NC 1 5 NC 12 3 3 2 GND 4 V 3 V DD OUT Bottom View 12 1 V V V V GND DD OUT DD OUT 2005-2016 Microchip Technology Inc. DS20001942G-page 1MCP9700/9700A and MCP9701/9701A Notice: Stresses above those listed under Maximum 1.0 ELECTRICAL Ratings may cause permanent damage to the device. This is CHARACTERISTICS a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Absolute Maximum Ratings Exposure to maximum rating conditions for extended periods V ....................................................................... 6.0V may affect device reliability. DD Storage Temperature......................... -65C to +150C Ambient Temp. with Power Applied... -40C to +150C Output Current .................................................30 mA Junction Temperature (T ).................................. 150C J ESD Protection on All Pins (HBM:MM) ..... (4 kV:200V) Latch-Up Current at Each Pin ....................... 200 mA DC ELECTRICAL CHARACTERISTICS Electrical Specifications: Unless otherwise indicated: MCP9700/9700A: V = 2.3V to 5.5V, GND = Ground, T = -40C to +125C and No load DD A MCP9701/9701A: V = 3.1V to 5.5V, GND = Ground, T = -10C to +125C and No load DD A Parameter Sym. Min. Typ. Max. Unit Conditions Power Supply Operating Voltage Range V 2.3 5.5 V MCP9700/9700A DD V 3.1 5.5 V MCP9701/9701A DD Operating Current I 6 12 A DD I 15 A T = 150C (Note 1) DD A Line Regulation C/V 0.1 C/V DD Sensor Accuracy (Notes 2, 3) T = +25C T 1 C A ACY T = 0C to +70C T -2.0 1 +2.0 C MCP9700A/9701A A ACY T = -40C to +125C T -2.0 1 +4.0 C MCP9700A A ACY T = -10C to +125C T -2.0 1 +4.0 C MCP9701A A ACY T = 0C to +70C T -4.0 2 +4.0 C MCP9700/9701 A ACY T = -40C to +125C T -4.0 2 +6.0 C MCP9700 A ACY T = -10C to +125C T -4.0 2 +6.0 C MCP9701 A ACY T = -40C to +150C T -4.0 2 +6.0 C HighTemperature (Note 1) A ACY Sensor Output Output Voltage, T = 0C V 500 mV MCP9700/9700A A 0C Output Voltage, T = 0C V 400 mV MCP9701/9701A A 0C Temperature Coefficient T 10.0 mV/C MCP9700/9700A C T 19.5 mV/C MCP9701/9701A C Output Nonlinearity V 0.5 C T = 0C to +70C (Note 3) ONL A Note 1: MCP9700 with SC70-5 and SOT-23-3 packages only. The MCP9700 High Temperature is not available with TO-92 package. 2: The MCP9700/9700A family accuracy is tested with V = 3.3V, while the MCP9701/9701A accuracy is DD tested with V = 5.0V. DD 3: The MCP9700/9700A and MCP9701/9701A family is characterized using the first-order or linear equation, as shown in Equation 4-2. Also refer to Figure 2-16. 4: The MCP9700/9700A and MCP9701/9701A family is characterized and production tested with a capacitive load of 1000 pF. 5: SC70-5 package thermal response with 1x1 inch, dual-sided copper clad, TO-92-3 package thermal response without PCB (leaded). DS20001942G-page 2 2005-2016 Microchip Technology Inc.