MCP9700/9700A
MCP9701/9701A
Low-Power Linear Active Thermistor™ ICs
Features:
• 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:
- V
DD
= 2.3V to 5.5V
MCP9700/9700A
- V
DD
= 3.1V to 5.5V
MCP9701/9701A
• Low Operating Current: 6 µA (typical)
• Optimized to Drive Large Capacitive Loads
Description:
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 (V
OUT
) 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.
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.
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 SOT-23
MCP9700/9700A
MCP9701/9701A
GND
123
3
5-Pin SC70
MCP9700/9700A
MCP9701/9701A
NC 1
GND 2
V
OUT
3
1
V
DD
2
V
OUT
4 V
DD
5 NC
Typical Applications:
•
•
•
•
•
•
Hard Disk Drives and Other PC Peripherals
Entertainment Systems
Home Appliance
Office Equipment
Battery Packs and Portable Equipment
General Purpose Temperature Monitoring
Package Type
3-Pin TO-92
MCP9700/9700A
MCP9701/9701A
Bottom
View
1
V
DD
V
OUT
GND
2005-2014 Microchip Technology Inc.
DS20001942F-page 1
MCP9700/9700A and MCP9701/9701A
1.0
ELECTRICAL
CHARACTERISTICS
†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.
Absolute Maximum Ratings †
V
DD
:...................................................................... 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 (T
J
):................................. 150°C
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
DD
= 2.3V to 5.5V, GND = Ground, T
A
= -40°C to +125°C and No load.
MCP9701/9701A:
V
DD
= 3.1V to 5.5V, GND = Ground, T
A
= -10°C to +125°C and No load.
Parameter
Power Supply
Operating Voltage Range
Operating Current
Power Supply Rejection
Sensor Accuracy (Notes
1, 2)
T
A
= +25°C
T
A
= 0°C to +70°C
T
A
= -40°C to +125°C
T
A
= -10°C to +125°C
T
A
= 0°C to +70°C
T
A
= -40°C to +125°C
T
A
= -10°C to +125°C
T
A
= -40°C to +150°C
Sensor Output
Output Voltage, T
A
= 0°C
Output Voltage, T
A
= 0°C
Temperature Coefficient
Output Nonlinearity
Note 1:
2:
3:
4:
5:
V
0°C
V
0°C
T
C
T
C
V
ONL
—
—
—
—
—
500
400
10.0
19.5
±0.5
—
—
—
—
—
mV
mV
MCP9700/9700A
MCP9701/9701A
T
ACY
T
ACY
T
ACY
T
ACY
T
ACY
T
ACY
T
ACY
T
ACY
—
-2.0
-2.0
-2.0
-4.0
-4.0
-4.0
-4.0
±1
±1
±1
±1
±2
±2
±2
±2
—
+2.0
+4.0
+4.0
+4.0
+6.0
+6.0
+6.0
°C
°C
°C
°C
°C
°C
°C
°C
MCP9700A/9701A
MCP9700A
MCP9701A
MCP9700/9701
MCP9700
MCP9701
HighTemperature (Note
4)
V
DD
V
DD
I
DD
I
DD
°C/V
DD
2.3
3.1
—
—
—
—
—
6
—
0.1
5.5
5.5
12
15
—
V
V
µA
µA
°C/V
TA = 150°C
(Note
4)
MCP9700/9700A
MCP9701/9701A
Sym.
Min.
Typ.
Max.
Unit
Conditions
mV/°C
MCP9700/9700A
mV/°C
MCP9701/9701A
°C
T
A
= 0°C to +70°C
(Note
2)
The MCP9700/9700A family accuracy is tested with V
DD
= 3.3V, while the MCP9701/9701A accuracy is
tested with V
DD
= 5.0V.
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.
SC70-5 package thermal response with 1x1 inch, dual-sided copper clad, TO-92-3 package thermal
response without PCB (leaded).
MCP9700 with SC70-5 and SOT23-3 packages only. The MCP9700 High Temperature is not available
with TO-92 package.
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.
MCP9700/9700A and MCP9701/9701A
DC ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Specifications:
Unless otherwise indicated:
MCP9700/9700A:
V
DD
= 2.3V to 5.5V, GND = Ground, T
A
= -40°C to +125°C and No load.
MCP9701/9701A:
V
DD
= 3.1V to 5.5V, GND = Ground, T
A
= -10°C to +125°C and No load.
Parameter
Output Current
Output Impedance
Output Load Regulation
Turn-On Time
Typical Load Capacitance
SC-70 Thermal Response to 63%
TO-92 Thermal Response to 63%
Note 1:
2:
3:
4:
5:
Sym.
I
OUT
Z
OUT
V
OUT
/
I
OUT
t
ON
C
LOAD
t
RES
t
RES
Min.
—
—
—
—
—
—
—
Typ.
—
20
1
800
—
1.3
1.65
Max.
100
—
—
—
1000
—
—
Unit
µA
µs
pF
s
s
(Note
5)
30°C (Air) to +125°C
(Fluid Bath) (Note
3)
I
OUT
= 100 µA, f = 500 Hz
T
A
= 0°C to +70°C,
I
OUT
= 100 µA
Conditions
The MCP9700/9700A family accuracy is tested with V
DD
= 3.3V, while the MCP9701/9701A accuracy is
tested with V
DD
= 5.0V.
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.
SC70-5 package thermal response with 1x1 inch, dual-sided copper clad, TO-92-3 package thermal
response without PCB (leaded).
MCP9700 with SC70-5 and SOT23-3 packages only. The MCP9700 High Temperature is not available
with TO-92 package.
The MCP9700/9700A and MCP9701/9701A family is characterized and production tested with a
capacitive load of 1000 pF.
TEMPERATURE CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated:
MCP9700/9700A:
V
DD
= 2.3V to 5.5V, GND = Ground, T
A
= -40°C to +125°C and No load.
MCP9701/9701A:
V
DD
= 3.1V to 5.5V, GND = Ground, T
A
= -10°C to +125°C and No load.
Parameters
Temperature Ranges
Specified Temperature Range
(Note
1)
T
A
T
A
T
A
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
Thermal Resistance, 5LD SC70
Thermal Resistance, 3LD SOT-23
Thermal Resistance, 3LD TO-92
Note 1:
JA
JA
JA
—
—
—
331
308
146
—
—
—
°C/W
°C/W
°C/W
T
A
T
A
T
A
-40
-10
-40
-40
-40
-65
—
—
—
—
—
—
+125
+125
+150
+125
+150
+150
°C
°C
°C
°C
°C
°C
MCP9700/9700A
MCP9701/9701A
High Temperature,
MCP9700 only
Extended Temperature
High Temperature
Sym.
Min.
Typ.
Max.
Units
Conditions
M
Operation in this range must not cause T
J
to exceed Maximum Junction Temperature (+150°C).
2005-2014 Microchip Technology Inc.
DS20001942F-page 3
MCP9700/9700A and MCP9701/9701A
2.0
Note:
TYPICAL PERFORMANCE CURVES
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note:
Unless otherwise indicated,
MCP9700/9700A:
V
DD
= 2.3V to 5.5V;
MCP9701/9701A:
V
DD
= 3.1V to 5.5V;
GND = Ground, C
bypass
= 0.1 µF.
6.0
5.0
Accuracy (°C)
3.0
2.0
1.0
0.0
-1.0
-2.0
-50
-25
0
25
50
75
T
A
(°C)
100
125
150
MCP9700A V
DD
= 3.3V
MCP9701A
V
DD
= 5.0V
Spec. Limits
6.0
4.0
Accuracy (°C)
2.0
0.0
-2.0
-4.0
-50
MCP9700
V
DD
= 3.3V
4.0
MCP9701
V
DD
= 5.0V
Spec. Limits
-25
0
25
50
75
T
A
(°C)
100
125
150
FIGURE 2-1:
Accuracy vs. Ambient
Temperature (MCP9700A/9701A).
6.0
4.0
Accuracy (°C)
2.0
0.0
-2.0
-4.0
-50
-25
0
25
50
75
T
A
(°C)
100
125
150
MCP9700
MCP9700A
V
DD
= 5.5V
V
DD
= 2.3V
MCP9701/
MCP9701A
V
DD
= 5.5V
V
DD
= 3.1V
FIGURE 2-4:
Accuracy vs. Ambient
Temperature (MCP9700/9701).
0.2
I
LOAD
= 100 µA
∆
Accuracy Due to Load
(°C)
0.1
0
MCP9701/MCP9701A
V
DD
= 5.0V
-0.1
-0.2
-50
-25
0
MCP9700/MCP9700A
V
DD
= 3.3V
25
50 75
T
A
(°C)
100 125 150
FIGURE 2-2:
Accuracy vs. Ambient
Temperature, with V
DD
.
12.0
10.0
8.0
I
DD
(µA)
6.0
4.0
2.0
0.0
-50
-25
0
25
50
75
T
A
(°C)
100
125
150
MCP9700/MCP9700A
MCP9701
MCP9701A
FIGURE 2-5:
Changes in Accuracy vs.
Ambient Temperature (Due to Load).
4.0
Load Regulation
∆V/∆I
(Ω)
3.0
2.0
1.0
0.0
-50
-25
0
25
50
T
A
(°C)
75
100
125
MCP9700/MCP9700A
MCP9701/MCP9701A
V
DD
= 3.3V
I
OUT
= 50 µA
I
OUT
= 100 µA
I
OUT
= 200 µA
FIGURE 2-3:
Temperature.
Supply Current vs.
FIGURE 2-6:
Load Regulation vs.
Ambient Temperature.
DS20001942F-page 4
2005-2014 Microchip Technology Inc.
MCP9700/9700A and MCP9701/9701A
Note:
Unless otherwise indicated,
MCP9700/9700A:
V
DD
= 2.3V to 5.5V;
MCP9701/9701A:
V
DD
= 3.1V to 5.5V;
GND = Ground, C
bypass
= 0.1 µF.
35%
30%
Occurrences
25%
20%
15%
10%
5%
0%
400
500
520
540
420
440
460
480
560
580
600
V
0°C
(mV)
MCP9700
35%
V
DD
= 3.3V
108 samples
MCP9700A
30%
Occurrences
25%
20%
15%
10%
5%
0%
MCP9701
V
DD
= 5.0V
108 samples
MCP9701A
MCP9701
V
0°C
(mV)
FIGURE 2-7:
Output Voltage at 0°C
(MCP9700/9700A).
45%
40%
35%
30%
25%
20%
15%
10%
5%
0%
FIGURE 2-10:
Output Voltage at 0°C
(MCP9701/9701A).
45%
40%
35%
30%
25%
20%
15%
10%
5%
0%
Occurrences
10.0
10.1
10.2
10.2
10.3
10.4
10.5
9.7
9.8
9.8
9.9
Occurrences
MCP9700
MCP9700A
V
DD
= 3.3V
108 samples
MCP9701
MCP9701A
V
DD
= 5.0V
108 samples
19.6
19.5
19.3
19.4
19.2
19.3
19.7
19.7
19.8
19.9
T
C
(mV/°C)
T
C
(mV/°C)
FIGURE 2-8:
Occurrences vs.
Temperature Coefficient (MCP9700/9700A).
0.30
Normalized PSRR (°C/V)
0.25
0.20
0.15
0.10
0.05
0.00
-50
-25
0
25
50
75
T
A
(°C)
100
125
150
MCP9700/MCP9700A
V
DD
= 2.3V to 4.0V
FIGURE 2-11:
Occurrences vs.
Temperature Coefficient (MCP9701/9701A).
0.30
Normalized PSRR (°C/V)
0.25
0.20
0.15
0.10
0.05
0.00
-50
-25
0
25
50
T
A
(°C)
75
100
125
MCP9701/MCP9701A
MCP9701/MCP9701A
3.1V to 4.0V
V
DD
= 3.1V to 4.0V
MCP9700/MCP9700A
V
DD
= 2.3V to 5.5V
MCP9701/MCP9701A
MCP9701/MCP9701A
3.1V to 5.5V
V
DD
= 3.1V to 5.5V
FIGURE 2-9:
Power Supply Rejection
(
°C/
V
DD
) vs. Ambient Temperature.
FIGURE 2-12:
Power Supply Rejection
(
°C/
V
DD
) vs. Temperature.
2005-2014 Microchip Technology Inc.
DS20001942F-page 5
20.0
500
300
320
340
360
380
400
420
440
460
480
嵌入式系统
