Low-Power Linear Active Thermistor ICs

1 2005-2016 Microchip Technology 1 MCP9700/9700 AMCP9701/9701 AFeatures Tiny Analog Temperature Sensor Available Packages:- SC70-5, SOT-23-3, TO-92-3 Wide Temperature Measurement Range:- -40 C to +125 C (Extended Temperature)- -40 C to +150 C (High Temperature)(MCP9700, SOT-23-3 and SC70-5 only) 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):- mV/ C (typical) (MCP9700/9700A)- mV/ C (typical) (MCP9701/9701A) Wide Operating Voltage Range: -VDD = to (MCP9700/9700A)-VDD = to (MCP9701/9701A) Low Operating Current: 6 A (typical) Optimized to Drive Large Capacitive LoadsTypical Applications Hard Disk Drives and Other PC Peripherals Entertainment Systems Home Appliance Office Equipment Battery Packs and Portable Equipment General Purpose Temperature MonitoringGeneral DescriptionMCP9700/9700A and MCP9701/9701A sensors withLinear Active Thermistor Integrated Circuit (IC) com-prise a family of analog temperature sensors thatconvert temperature to analog voltage.

2 The low-cost, Low-Power sensors feature an accuracyof 2 C from 0 C to +70 C (MCP9700A/9701A) and 4 C from 0 C to +70 C (MCP9700/9701) whileconsuming 6 A (typical) of operating resistive sensors, , thermistors, the LinearActive Thermistor IC does not require an additionalsignal-conditioning circuit. Therefore, the biasing circuitdevelopment overhead for Thermistor solutions can beavoided by implementing a sensor from these low-costdevices. The Voltage Output pin (VOUT) can be directlyconnected to the ADC input of a microcontroller. TheMCP9700/9700A and MCP9701/9701A temperaturecoefficients are scaled to provide a 1 C/bit resolutionfor an 8-bit ADC with a reference voltage of and5V, respectively. The MCP9700/9700A output C/bitfor a 12-bit ADC with MCP9700/9700A and MCP9701/9701A provide alow-cost solution for applications that require measure-ment of a relative change of temperature.

3 When mea-suring relative change in temperature from +25 C, anaccuracy of 1 C (typical) can be realized from 0 C to+70 C. This accuracy can also be achieved by applyingsystem calibration at +25 C. In addition, this family of devices is immune to theeffects of parasitic capacitance and can drive largecapacitive loads. This provides printed circuit board(PCB) layout design flexibility by enabling the device tobe remotely located from the microcontroller. Addingsome capacitance at the output also helps the outputtransient response by reducing overshoots orundershoots. However, capacitive load is not requiredfor the stability of sensor output. Package Types3-Pin SOT-23 MCP9700/9700 AMCP9701/9701A3-Pin TO-92123 GNDVOUTVDDB ottomViewMCP9700/9700 AMCP9701/9701A1 GNDVDDVOUTNC412355-Pin SC70 NCMCP9700/9700 AMCP9701/9701 AGNDVDDVOUT312 Low-Power Linear Active Thermistor ICsMCP9700/9700A and MCP9701/9701 ADS20001942G-page 2 2005-2016 Microchip Technology CHARACTERISTICSA bsolute Maximum Ratings -65 C to +150 CAmbient Temp.

4 With Power -40 C to +150 COutput Current .. 30 mAJunction Temperature (TJ).. 150 CESD Protection on All Pins (HBM:MM) .. (4 kV:200V)Latch-Up Current at Each Pin .. 200 mA Notice: Stresses above those listed under MaximumRatings may cause permanent damage to the device. This isa stress rating only and functional operation of the device atthose or any other conditions above those indicated in theoperational listings of this specification is not to maximum rating conditions for extended periodsmay affect device ELECTRICAL CHARACTERISTICSE lectrical Specifications: Unless otherwise indicated: MCP9700/9700A: VDD = to , GND = Ground, TA = -40 C to +125 C and No loadMCP9701/9701A: VDD = to , GND = Ground, TA = -10 C to +125 C and No Supply Operating Voltage CurrentIDD 612 AIDD 15 A TA = 150 C (Note 1)Line Regulation C/ VDD C/VSensor Accuracy (Notes 2,3)TA = +25 CTACY 1 CTA = 0 C to +70 1+ CMCP9700A/9701 ATA = -40 C to +125 1+ CMCP9700 ATA = -10 C to +125 1+ CMCP9701 ATA = 0 C to +70 2+ CMCP9700/9701TA = -40 C to +125 2+ CMCP9700TA = -10 C to +125 2+ CMCP9701TA = -40 C to +150 2+ CHighTemperature (Note 1)Sensor OutputOutput Voltage, TA = 0 CV0 C 500 mVMCP9700/9700 AOutput Voltage, TA = 0 CV0 C 400 mVMCP9701/9701 ATemperature CoefficientTC mV/ CMCP9700/9700 ATC mV/ CMCP9701/9701 AOutput NonlinearityVONL CTA = 0 C to +70 C (Note 3)Note 1:MCP9700 with SC70-5 and SOT-23-3 packages only.

5 The MCP9700 High Temperature is not availablewith TO-92 :The MCP9700/9700A family accuracy is tested with VDD = , while the MCP9701/9701A accuracy istested with VDD = :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 :The MCP9700/9700A and MCP9701/9701A family is characterized and production tested with acapacitive load of 1000 :SC70-5 package thermal response with 1x1 inch, dual-sided copper clad, TO-92-3 package thermalresponse without PCB (leaded). 2005-2016 Microchip Technology 3 MCP9700/9700A and MCP9701/9701 AOutput CurrentIOUT 100 AOutput ImpedanceZOUT 20 IOUT = 100 A, f = 500 HzOutput Load Regulation VOUT/ IOUT 1 TA = 0 C to +70 CIOUT = 100 ATurn-On TimetON 800 sTypical Load CapacitanceCLOAD 1000pFNote 4SC-70 Thermal Response to 63%tRES s30 C (Air) to +125 C (Fluid Bath) (Note 5)TO-92 Thermal Response to 63%tRES sDC ELECTRICAL CHARACTERISTICS (CONTINUED)Electrical Specifications: Unless otherwise indicated: MCP9700/9700A: VDD = to , GND = Ground, TA = -40 C to +125 C and No loadMCP9701/9701A: VDD = to , GND = Ground, TA = -10 C to +125 C and No 1:MCP9700 with SC70-5 and SOT-23-3 packages only.

6 The MCP9700 High Temperature is not availablewith TO-92 :The MCP9700/9700A family accuracy is tested with VDD = , while the MCP9701/9701A accuracy istested with VDD = :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 :The MCP9700/9700A and MCP9701/9701A family is characterized and production tested with acapacitive load of 1000 :SC70-5 package thermal response with 1x1 inch, dual-sided copper clad, TO-92-3 package thermalresponse without PCB (leaded).TEMPERATURE CHARACTERISTICSE lectrical Specifications: Unless otherwise indicated:MCP9700/9700A: VDD = to , GND = Ground, TA = -40 C to +125 C and No loadMCP9701/9701A: VDD = to , GND = Ground, TA = -10 C to +125 C and No RangesSpecified Temperature Range (Note 1)TA-40 +125 CMCP9700/9700 ATA-10 +125 CMCP9701/9701 ATA-40 +150 CHigh Temperature(MCP9700, SOT23-3 and SC70-5 only)Operating Temperature RangeTA-40 +125 CExtended TemperatureTA-40 +150 CHigh TemperatureStorage Temperature RangeTA-65 +150 CThermal Package ResistancesThermal Resistance, 5LD SC70 JA 331 C/WThermal Resistance, 3LD SOT-23 JA 308 C/WThermal Resistance, 3LD TO-92 JA 146 C/WNote 1:Operation in this range must not cause TJ to exceed Maximum Junction Temperature (+150 C).

7 MCP9700/9700A and MCP9701/9701 ADS20001942G-page 4 2005-2016 Microchip Technology PERFORMANCE CURVESNote: Unless otherwise indicated, MCP9700/9700A: VDD = to ; MCP9701/9701A: VDD = to ;GND = Ground, Cbypass = F. FIGURE 2-1:Accuracy vs. Ambient Temperature (MCP9700A/9701A). FIGURE 2-2:Accuracy vs. Ambient Temperature, with VDD. FIGURE 2-3:Supply Current vs. Temperature. FIGURE 2-4:Accuracy vs. Ambient Temperature (MCP9700/9701).FIGURE 2-5:Changes in Accuracy vs. Ambient Temperature (Due to Load).FIGURE 2-6:Load Regulation vs. Ambient :The graphs and tables provided following this note are a statistical summary based on a limited number ofsamples and are provided for informational purposes only. The performance characteristics listed hereinare not tested or guaranteed. In some graphs or tables, the data presented may be outside the specifiedoperating range ( , outside specified power supply range) and therefore outside the warranted 0 255075100125150 Accuracy ( C)TA( C)MCP9700A VDD= 125 150 Accuracy ( C)TA( C)MCP9701/MCP9701 AVDD= ( C)IDD ( A)MCP9700 0 255075100125150 Accuracy ( C)TA( C)MCP9700 VDD= 125 150TA ( C) Accuracy Due to Load ( C)MCP9701/MCP9701A VDD = = 100 AMCP9700/MCP9700A VDD = ( C)Load Regulation V/ I ( )MCP9700/MCP9700 AMCP9701/MCP9701 AVDD = = 50 AIOUT = 100 AIOUT = 200 A 2005-2016 Microchip Technology 5 MCP9700/9700A and MCP9701/9701 ANote: Unless otherwise indicated, MCP9700/9700A: VDD = to ; MCP9701/9701A: VDD = to ;GND = Ground, Cbypass = F.

8 FIGURE 2-7:Output Voltage at 0 C (MCP9700/9700A). FIGURE 2-8:Occurrences vs. Temperature Coefficient (MCP9700/9700A). FIGURE 2-9:Line Regulation ( C/ VDD) vs. Ambient 2-10:Output Voltage at 0 C (MCP9701/9701A).FIGURE 2-11:Occurrences vs. Temperature Coefficient (MCP9701/9701A).FIGURE 2-12:Line Regulation ( C/ VDD) vs. Ambient C (mV)OccurrencesVDD = samplesMCP9700 AMCP97000%5%10%15%20%25%30%35%40%45% (mV/ C)OccurrencesMCP9700 MCP9700 AVDD = 125 150 Normalized Line Regulation ( C/ VDD)TA ( C)MCP9700/MCP9700A VDD = to VDD = to C (mV)OccurrencesMCP9701 VDD = samplesMCP9701 AMCP97010%5%10%15%20%25%30%35%40%45% (mV/ C)OccurrencesMCP9701 MCP9701 AVDD = Line Regulation ( C/ VDD)TA ( C)MCP9701/MCP9701 AVDD = to VDD = to and MCP9701/9701 ADS20001942G-page 6 2005-2016 Microchip Technology : Unless otherwise indicated, MCP9700/9700A: VDD = to ; MCP9701/9701A: VDD = to ;GND = Ground, Cbypass = F. FIGURE 2-13:Output Voltage vs.

9 Power Supply. FIGURE 2-14:Output vs. Settling Time to Step VDD. FIGURE 2-15:Thermal Response (Air-to-Fluid Bath).FIGURE 2-16:Output Voltage vs. Ambient 2-17:Output vs. Settling Time to Ramp 2-18:Output Impedance vs. (V)VOUT (V)TA = +26 (ms)VOUT (V) (mA)VDD_STEP = 5 VTA = 26 CIDDVOUT305580105130-2024681012141618 Time (s)TA ( C)SC70-51 in. x 1 in. Copper Clad PCBL eaded, without ( C)VOUT (V) (ms)VOUT (V) ( A)IDDVOUTVDD_RAMP = 5V/msTA = +26 100000 Frequency (Hz)Output Impedance ( )VDD = = 100 ATA = +26 C1k10k100k1001010. 2005-2016 Microchip Technology 7 MCP9700/9700A and MCP9701 DESCRIPTIONSThe descriptions of the pins are listed in Ta b l e 3 - 3-1:PIN FUNCTION Ground Pin (GND)GND is the system ground Voltage Pin (VOUT)The sensor output can be measured at VOUT. Thevoltage range over the operating temperature range forthe MCP9700/9700A is 100 mV to The voltagerange over the operating temperature range for theMCP9701/9701A is 200 mV to Supply Input (VDD)The operating voltage as specified in the DC ElectricalCharacteristics table is applied to Connect Pin (NC)This pin is not connected to the die.

10 It can be used toimprove thermal conduction to the package byconnecting it to a printed circuit board (PCB) trace fromthe thermal NCNo Connect (this pin is not connected to the die.)233 GNDP ower Ground Pin322 VOUTO utput Voltage Pin411 VDDP ower Supply Input5 NCNo Connect (this pin is not connected to the die.)MCP9700/9700A and MCP9701/9701 ADS20001942G-page 8 2005-2016 Microchip Technology INFORMATIONThe Linear Active Thermistor IC uses an internaldiode to measure temperature. The diode electricalcharacteristics have a temperature coefficient thatprovides a change in voltage based on the relativeambient temperature from -40 C to 150 C. The changein voltage is scaled to a temperature coefficient mV/ C (typical) for the MCP9700/9700A mV/ C (typical) for the MCP9701/9701A. Theoutput voltage at 0 C is also scaled to 500 mV (typical)and 400 mV (typical) for the MCP9700/9700A andMCP9701/9701A, respectively.