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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP9701A Datasheet

(MCP9700A / MCP9701A) Low-Power Linear Active Thermistor ICs

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MCP9700/9700A
MCP9701/9701A
Low-Power Linear Active Thermistor™ ICs
Features:
Description:
• Tiny Analog Temperature Sensor
• Available Packages:
- SC70-5, SOT-23-5, TO-92-3
• Wide Temperature Measurement Range:
- -40°C to +125°C (Extended Temperature)
- -40°C to +150°C (High Temperature)
(MCP9700)
• 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 (typical) MCP9700/9700A
- 19.5 mV/°C (typical) 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 (typical)
MCP9700/9700A and MCP9701/9701A sensors with
Linear Active Thermistor™ Integrated Circuit (IC) com-
prise a family of analog temperature sensors that
convert temperature to analog voltage.
The low-cost, low-power sensors feature an accuracy
of ±2°C from 0°C to +70°C (MCP9700A/9701A) and
±4°C from 0°C to +70°C (MCP9700/9701) while
consuming 6 µA (typical) of operating current.
Unlike resistive sensors, e.g., thermistors, the Linear
Active Thermistor IC does not require an additional sig-
nal-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, respec-
tively. The MCP9700/9700A output 0.1°C/bit for a 12-
bit ADC with 4.096V reference.
• Optimized to Drive Large Capacitive Loads
Typical Applications:
• Hard Disk Drives and Other PC Peripherals
• Entertainment Systems
• Home Appliance
The MCP9700/9700A and MCP9701/9701A provide a
low-cost solution for applications that require measure-
ment of a relative change of temperature. When mea-
suring relative change in temperature from +25°C, an
accuracy of ±1°C (typical) can be realized from 0°C to
+70°C. This accuracy can also be achieved by applying
system calibration at +25°C.
• Office Equipment
• Battery Packs and Portable Equipment
• General Purpose Temperature Monitoring
Package Type
In addition, this family is immune to the effects of para-
sitic capacitance and can drive large 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, capaci-
tive load is not required for the stability of sensor out-
put.
3-Pin TO-92
MCP9700/9700A
MCP9701/9701A
3-Pin SOT-23
MCP9700/9700A
MCP9701/9701A
5-Pin SC70
MCP9700/9700A
MCP9701/9701A
123
GND
3
NC 1
GND 2
5 NC
Bottom
View
1
VDD VOUT GND
1
VDD
2
VOUT
VOUT 3
4 VDD
2005-2014 Microchip Technology Inc.
DS20001942F-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP9701A Datasheet

(MCP9700A / MCP9701A) Low-Power Linear Active Thermistor ICs

No Preview Available !

MCP9700/9700A and MCP9701/9701A
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
VDD:...................................................................... 6.0V
Storage temperature: ........................ -65°C to +150°C
Ambient Temp. with Power Applied:.. -40°C to +150°C
Output Current .................................................±30 mA
Junction Temperature (TJ):................................. 150°C
ESD Protection On All Pins (HBM:MM):.... (4 kV:200V)
Latch-Up Current at Each Pin: ...................... ±200 mA
†Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
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.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated:
MCP9700/9700A: VDD = 2.3V to 5.5V, GND = Ground, TA = -40°C to +125°C and No load.
MCP9701/9701A: VDD = 3.1V to 5.5V, GND = Ground, TA = -10°C to +125°C and No load.
Parameter
Sym.
Min.
Typ. Max. Unit
Conditions
Power Supply
Operating Voltage Range
VDD 2.3 — 5.5 V MCP9700/9700A
VDD 3.1 — 5.5 V MCP9701/9701A
Operating Current
IDD — 6 12 µA
IDD — — 15 µA TA = 150°C (Note 4)
Power Supply Rejection
°C/VDD
0.1
— °C/V
Sensor Accuracy (Notes 1, 2)
TA = +25°C
TA = 0°C to +70°C
TA = -40°C to +125°C
TA = -10°C to +125°C
TA = 0°C to +70°C
TA = -40°C to +125°C
TA = -10°C to +125°C
TA = -40°C to +150°C
Sensor Output
TACY — ±1 — °C
TACY -2.0 ±1 +2.0 °C MCP9700A/9701A
TACY -2.0 ±1 +4.0 °C MCP9700A
TACY -2.0 ±1 +4.0 °C MCP9701A
TACY -4.0 ±2 +4.0 °C MCP9700/9701
TACY -4.0 ±2 +6.0 °C MCP9700
TACY -4.0 ±2 +6.0 °C MCP9701
TACY -4.0 ±2 +6.0 °C HighTemperature (Note 4)
Output Voltage, TA = 0°C
V0°C
— 500 — mV MCP9700/9700A
Output Voltage, TA = 0°C
V0°C
— 400 — mV MCP9701/9701A
Temperature Coefficient
TC — 10.0 — mV/°C MCP9700/9700A
TC — 19.5 — mV/°C MCP9701/9701A
Output Nonlinearity
VONL
— ±0.5 —
°C TA = 0°C to +70°C (Note 2)
Note 1: The MCP9700/9700A family accuracy is tested with VDD = 3.3V, while the MCP9701/9701A accuracy is
tested with VDD = 5.0V.
2: 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.
3: SC70-5 package thermal response with 1x1 inch, dual-sided copper clad, TO-92-3 package thermal
response without PCB (leaded).
4: MCP9700 with SC70-5 and SOT23-3 packages only. The MCP9700 High Temperature is not available
with TO-92 package.
5: The MCP9700/9700A and MCP9701/9701A family is characterized and production tested with a
capacitive load of 1000 pF.
DS20001942F-page 2
2005-2014 Microchip Technology Inc.


Part Number MCP9701A
Description (MCP9700A / MCP9701A) Low-Power Linear Active Thermistor ICs
Maker Microchip Technology
Total Page 20 Pages
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