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Low Power Programmable
Temperature Controller
TMP01
FEATURES
−55°C to +125°C (−67°F to +257°F) operation
±1.0°C accuracy over temperature (typ)
Temperature-proportional voltage output
User-programmable temperature trip points
User-programmable hysteresis
20 mA open-collector trip point outputs
TTL/CMOS compatible
Single-supply operation (4.5 V to 13.2 V)
PDIP, SOIC, and TO-99 packages
FUNCTIONAL BLOCK DIAGRAM
VREF 1
R1
SET 2
HIGH
R2
SET 3
LOW
R3
GND 4
HYSTERESIS
GENERATOR
5 VPTAT
WINDOW
COMPARATOR
6 UNDER
2.5V
TEMPERATURE
SENSOR AND SENSOR
VOLTAGE
REFERENCE
8 V+
7 OVER
TMP01
APPLICATIONS
Over/under temperature sensor and alarm
Board-level temperature sensing
Temperature controllers
Electronic thermostats
Thermal protection
HVAC systems
Industrial process control
Remote sensors
Figure 1.
GENERAL DESCRIPTION
The TMP01 is a temperature sensor that generates a voltage
output proportional to absolute temperature and a control
signal from one of two outputs when the device is either above
or below a specific temperature range. Both the high/low
temperature trip points and hysteresis (overshoot) band are
determined by user-selected external resistors. For high volume
production, these resistors are available on board.
The TMP01 consists of a band gap voltage reference combined
with a pair of matched comparators. The reference provides
both a constant 2.5 V output and a voltage proportional to
absolute temperature (VPTAT) which has a precise temperature
coefficient of 5 mV/K and is 1.49 V (nominal) at 25°C. The
comparators compare VPTAT with the externally set tempera-
ture trip points and generate an open-collector output signal
when one of their respective thresholds has been exceeded.
Hysteresis is also programmed by the external resistor chain
and is determined by the total current drawn out of the 2.5 V
reference. This current is mirrored and used to generate a
hysteresis offset voltage of the appropriate polarity after a
comparator has been tripped. The comparators are connected
in parallel, which guarantees that there is no hysteresis overlap
and eliminates erratic transitions between adjacent trip zones.
The TMP01 utilizes proprietary thin-film resistors in conjunc-
tion with production laser trimming to maintain a temperature
accuracy of ±1°C (typical) over the rated temperature range,
with excellent linearity. The open-collector outputs are capable
of sinking 20 mA, enabling the TMP01 to drive control relays
directly. Operating from a 5 V supply, quiescent current is only
500 μA (max).
The TMP01 is available in 8-pin mini PDIP, SOIC, and TO-99
packages.
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©1993–2009 Analog Devices, Inc. All rights reserved.
00333-001
TMP01
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
TMP01EST, TMP01FP, TMP01FS ............................................. 3
TMP01FJ........................................................................................ 4
Absolute Maximum Ratings............................................................ 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ........................................................................ 8
Temperature Hysteresis ............................................................... 8
Programming the TMP01 ........................................................... 8
Understanding Error Sources ..................................................... 9
Safety Considerations in Heating and Cooling System
Design ............................................................................................ 9
Applications Information .............................................................. 10
Self-Heating Effects .................................................................... 10
Buffering the Voltage Reference ............................................... 10
Preserving Accuracy Over Wide Temperature Range
Operation .................................................................................... 10
Thermal Response Time ........................................................... 10
Switching Loads with the Open-Collector Outputs .............. 11
High Current Switching ............................................................ 12
Buffering the Temperature Output Pin ................................... 13
Differential Transmitter............................................................. 13
4 mA to 20 mA Current Loop .................................................. 13
Temperature-to-Frequency Converter .................................... 14
Isolation Amplifier ..................................................................... 15
Out-of-Range Warning.............................................................. 15
Translating 5 mV/K to 10 mV/°C ............................................ 16
Translating VPTAT to the Fahrenheit Scale ........................... 16
Outline Dimensions ....................................................................... 17
Ordering Guide .......................................................................... 18
REVISION HISTORY
7/09—Rev. D to Rev. E
Updated Format .................................................................. Universal
Updated Outline Dimensions ....................................................... 18
Changes to Ordering Guide .......................................................... 19
1/02—Rev. C: Rev. D
Edits to General Descriptions Section ........................................... 1
Edits to Specifications Section ........................................................ 2
Edits to Wafer Test Limits Section.................................................. 4
Edits to Dice Characteristics Section ............................................. 4
Edits to Ordering Guide .................................................................. 5
7/93—Revision 0: Initial Version
Rev. E | Page 2 of 20
TMP01
SPECIFICATIONS
TMP01ES, TMP01FP, TMP01FS
PDIP and SOIC packages. V+ = 5 V, GND = O V, −40°C ≤ T
A
≤ +85°C, unless otherwise noted.
Table 1.
Parameter
INPUTS SET HIGH, SET LOW
Offset Voltage
Offset Voltage Drift
Input Bias Current, E Grade
Input Bias Current, F Grade
OUTPUT VPTAT
Output Voltage
Scale Factor
1
Temperature Accuracy, E Grade
Temperature Accuracy, F Grade
Temperature Accuracy, E Grade
Temperature Accuracy, F Grade
Temperature Accuracy, E Grade
Temperature Accuracy, F Grade
Temperature Accuracy, E Grade
Temperature Accuracy, F Grade
Repeatability Error
2
Long-Term Drift Error
3,4
Power Supply Rejection Ratio
OUTPUT VREF
Output Voltage, E Grade
Output Voltage, F Grade
Output Voltage, E Grade
Output Voltage, F Grade
Output Voltage, E Grade
Output Voltage, F Grade
Drift
Line Regulation
Load Regulation
Output Current, Zero Hysteresis
Hysteresis Current Scale Factor
1
Turn-On Settling Time
OPEN-COLLECTOR OUTPUTS OVER, UNDER
Output Low Voltage
Output Leakage Current
Fall Time
POWER SUPPLY
Supply Range
Supply Current
Power Dissipation
1
2
Symbol
V
OS
TCV
OS
I
B
I
B
VPTAT
TCV
PTAT
Conditions
Min
Typ
0.25
3
25
25
Max
Unit
mV
μV/°C
nA
nA
V
mV/K
°C
°C
°C
°C
°C
°C
°C
°C
Degree
Degree
%/V
V
V
V
V
V
V
ppm/°C
%/V
%/mA
μA
μA/°C
μs
V
V
μA
ns
V
μA
μA
mW
50
100
T
A
= 25°C, no load
T
A
= 25°C, no load
T
A
= 25°C, no load
10°C < T
A
< 40°C, no load
10°C < T
A
< 40°C, no load
−40°C < T
A
< 85°C, no load
−40°C < T
A
< 85°C, no load
−55°C < T
A
< 125°C, no load
−55°C < T
A
< 125°C, no load
−1.5
−3
−3.0
−5.0
ΔVPTAT
PSRR
VREF
VREF
VREF
VREF
VREF
VREF
TC
VREF
T
A
= 25°C, 4.5 V ≤ V+ ≤ 13.2 V
T
A
= 25°C, no load
T
A
= 25°C, no load
−40°C < T
A
< 85°C, no load
−40°C < T
A
< 85°C, no load
−55°C < T
A
< 125°C, no load
−55°C < T
A
< 125°C, no load
4.5 V ≤ V+ ≤ 13.2 V
10 μA ≤ I
VREF
≤ 500 μA
2.495
2.490
2.490
2.485
1.49
5
±0.5
±1.0
±0.75
±1.5
±1
±2
±1.5
±2.5
0.25
0.25
±0.02
2.500
2.500
2.500
2.500
2.5 ± 0.01
2.5 ± 0.015
−10
±0.01
±0.1
7
5.0
25
0.25
0.6
1
40
1.5
3
3.0
5.0
0.5
±0.1
2.505
2.510
2.510
2.515
±0.05
±0.25
IV
REF
SF
HYS
To rated accuracy
V
OL
V
OL
I
OH
t
HL
V+
I
SY
I
SY
P
DISS
I
SINK
= 1.6 mA
I
SINK
= 20 mA
V+ = 12 V
See Figure 2
4.5
Unloaded, +V = 5 V
Unloaded, +V = 13.2 V
+V = 5 V
0.4
100
400
450
2.0
13.2
500
800
2.5
K = °C + 273.15.
Maximum deviation between 25°C readings after temperature cycling between −55°C and +125°C.
3
Guaranteed but not tested.
4
Observed in a group sample over an accelerated life test of 500 hours at 150°C.
Rev. E | Page 3 of 20
TMP01
V+
1kΩ
20pF
00333-002
Figure 2. Test Load
TMP01FJ
TO-99 metal can package. V+ = 5 V, GND = 0 V, −40°C ≤ T
A
≤ +85°C, unless otherwise noted.
Table 2.
Parameter
INPUTS SET HIGH, SET LOW
Offset Voltage
Offset Voltage Drift
Input Bias Current, F Grade
OUTPUT VPTAT
Output Voltage
Scale Factor
1
Temperature Accuracy, F Grade
Temperature Accuracy, F Grade
Temperature Accuracy, F Grade
Temperature Accuracy, F Grade
Repeatability Error
2
Long-Term Drift Error
3, 4
Power Supply Rejection Ratio
OUTPUT VREF
Output Voltage, F Grade
Output Voltage, F Grade
Output Voltage, F Grade
Drift
Line Regulation
Load Regulation
Output Current, Zero Hysteresis
Hysteresis Current Scale Factor
1
Turn-On Settling Time
OPEN-COLLECTOR OUTPUTS OVER, UNDER
Output Low Voltage
Output Leakage Current
Fall Time
POWER SUPPLY
Supply Range
Supply Current
Power Dissipation
1
2
Symbol
V
OS
TCV
OS
I
B
VPTAT
TCV
PTAT
Conditions
Min
Typ
0.25
3
25
Max
Unit
mV
μV/°C
nA
V
mV/K
°C
°C
°C
°C
Degree
Degree
%/V
V
V
V
ppm/°C
%/V
%/mA
μA
μA/°C
μs
V
V
μA
ns
V
μA
μA
mW
100
T
A
= 25°C, no load
T
A
= 25°C, no load
10°C < T
A
< 40°C, no load
−40°C < T
A
< 85°C, no load
−55°C < T
A
< 125°C, no load
−3
−5.0
ΔVPTAT
PSRR
VREF
VREF
VREF
TC
VREF
T
A
= 25°C, 4.5 V ≤ V+ ≤ 13.2 V
T
A
= 25°C, no load
−40°C < T
A
< 85°C, no load
−55°C < T
A
< 125°C, no load
4.5 V ≤ V+ ≤ 13.2 V
10 μA ≤ I
VREF
≤ 500 μA
2.490
2.485
1.49
5
±1.0
±1.5
±2
±2.5
0.25
0.25
±0.02
2.500
2.500
2.5 ± 0.015
−10
±0.01
±0.1
7
5.0
25
0.25
0.6
1
40
3
5.0
0.5
±0.1
2.510
2.515
±0.05
±0.25
IV
REF
SF
HYS
To rated accuracy
V
OL
V
OL
I
OH
t
HL
V+
I
SY
I
SY
P
DISS
I
SINK
= 1.6 mA
I
SINK
= 20 mA
V+ = 12 V
See Figure 2
4.5
Unloaded, +V = 5 V
Unloaded, +V = 13.2 V
+V = 5 V
0.4
100
400
450
2.0
13.2
500
800
2.5
K = °C + 273.15.
Maximum deviation between 25°C readings after temperature cycling between −55°C and +125°C.
3
Guaranteed but not tested.
4
Observed in a group sample over an accelerated life test of 500 hours at 150°C.
Rev. E | Page 4 of 20
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