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ADT6501SRJZP085RL7

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
Low Cost, 2.7 V to 5.5 V, Micropower
Temperature Switches in SOT-23
Data Sheet
ADT6501/ADT6502/ADT6503/ADT6504
Rev. B Document Feedback
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.
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Tel: 781.329.4700 ©2007–2012 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
±0.5°C (typical) threshold accuracy
Factory-set trip points from
−45°C to +15°C in 10°C increments
+35°C to +115°C in 10°C increments
No external components required
Maximum temperature of 125°C
Open-drain output (ADT6501/ADT6503)
Push-pull output (ADT6502/ADT6504)
Pin-selectable hysteresis of 2°C and 10°C
Supply current of 30 µA (typical)
Space-saving, 5-lead SOT-23 package
APPLICATIONS
Medical equipment
Automotive
Cell phones
Hard disk drives
Personal computers
Electronic test equipment
Domestic appliances
Process control
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
GENERAL DESCRIPTION
The ADT6501/ADT6502/ADT6503/ADT6504 are trip point
temperature switches available in a 5-lead SOT-23 package.
Each part contains an internal band gap temperature sensor for
local temperature sensing. When the temperature crosses the
trip point setting, the logic output is activated. The ADT6501/
ADT6503 logic output is active low and open-drain. The
ADT6502/ADT6504 logic output is active high and push-pull.
The temperature is digitized to a resolution of 0.125°C (11-bit).
The factory trip point settings are 10°C apart starting from
−45°C to +15°C for the cold threshold models and from +35°C
to +115°C for the hot threshold models.
These devices require no external components and typically
consume 30 μA supply current. Hysteresis is pin-selectable at
2°C and 10°C. The temperature switch is specified to operate
over the supply range of 2.7 V to 5.5 V.
The ADT6501 and ADT6502 are used for monitoring
temperatures from +35°C to +115°C only. Therefore, the logic
output pin becomes active when the temperature goes higher
than the selected trip point temperature.
The ADT6503 and ADT6504 are used for monitoring tempera-
tures from −45°C to +15°C only. Therefore, the logic output
pin becomes active when the temperature goes lower than the
selected trip point temperature.
PRODUCT HIGHLIGHTS
1. Σ-Δ based temperature measurement gives high accuracy
and noise immunity.
2. Wide operating temperature range from −55°C to +125°C.
3. ±0.5°C typical accuracy from −45°C to +115°C.
4. Factory threshold settings from −45°C to +115°C in
10°C increments.
5. Supply voltage is 2.7 V to 5.5 V.
6. Supply current of 30 μA.
7. Space-saving, 5-lead SOT-23 package.
8. Pin-selectable temperature hysteresis of 2°C or 10°C.
9. Temperature resolution of 0.125°C.
06096-001
2ºC/10ºC
V
CC
4
GND
1
GND
2
HYST
3
TOVER
5
FACTORY PRESET
TRIP POINT
REGISTER
ADT6501
COMPARATOR
Σ-Δ
TEMPERATURE-TO-
DIGITAL CONVERTER
ADT6501/ADT6502/ADT6503/ADT6504 Data Sheet
Rev. B | Page 2 of 16
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 4
ESD Caution .................................................................................. 4
Pin Configurations and Function Descriptions ........................... 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ........................................................................ 8
Circuit Information ...................................................................... 8
Converter Details ..........................................................................8
Factory-Programmed Threshold Range ....................................8
Hysteresis Input .............................................................................8
Temperature Conversion ..............................................................8
Application Information ................................................................ 10
Thermal Response Time ........................................................... 10
Self-Heating Effects .................................................................... 10
Supply Decoupling ..................................................................... 10
Temperature Monitoring ........................................................... 10
Typical Application Circuits ......................................................... 11
Outline Dimensions ....................................................................... 13
Ordering Guide .......................................................................... 13
REVISION HISTORY
9/12—Rev. A to Rev. B
Change to Supply Current Parameter, Table 1 .............................. 3
Updated Outline Dimensions ....................................................... 13
1/08—Rev. 0 to Rev. A
Added ADT6503 and ADT6504 ....................................... Universal
Changes to Features .......................................................................... 1
Changes to Product Highlights ....................................................... 1
Changes to Table 1 ............................................................................. 3
Changes to Typical Performance Characteristics ......................... 6
Changes to Ordering Guide .......................................................... 13
9/
07—Revision 0: Initial Version
Data Sheet ADT6501/ADT6502/ADT6503/ADT6504
Rev. B | Page 3 of 16
SPECIFICATIONS
T
A
= −55°C to +125°C, V
CC
= 2.7 V to 5.5 V, open-drain R
PULL-UP
= 10 kΩ, unless otherwise noted.
Table 1.
Parameter Min Typ Max Unit Test Conditions/Comments
TEMPERATURE SENSOR AND ADC
Threshold Accuracy ±0.5 ±6 °C T
A
= −45°C to −25°C
±0.5 ±4 °C T
A
= −15°C to +15°C
±0.5 ±4 °C T
A
= 35°C to 65°C
±0.5 ±6 °C T
A
= 75°C to 115°C
ADC Resolution 11 Bits
Temperature Conversion Time 30 ms Time necessary to complete a conversion
Update Rate 600 ms Conversion started every 600 ms
Temperature Threshold Hysteresis 2 °C HYST pin = 0 V
10 °C HYST pin = V
CC
DIGITAL INPUT (HYST)
Input Low Voltage, V
IL
0.2 × V
CC
V
Input High Voltage, V
IH
0.8 × V
CC
V
DIGITAL OUTPUT (OPEN-DRAIN)
Output High Current, I
OH
10 nA Leakage current, V
CC
= 2.7 V and V
OH
= 5.5 V
Output Low Voltage, V
OL
0.3 V I
OL
= 1.2 mA, V
CC
= 2.7 V
0.4
V
I
OL
= 3.2 mA, V
CC
= 4.5 V
Output Capacitance, C
OUT
1
10 pF R
PULL-UP
= 10 kΩ
DIGITAL OUTPUT (PUSH-PULL)
Output Low Voltage, V
OL
0.3
V
I
OL
= 1.2 mA, V
CC
= 2.7 V
0.4 V I
OL
= 3.2 mA, V
CC
= 4.5 V
Output High Voltage, V
OH
0.8 × V
CC
V I
SOURCE
= 500 µA, V
CC
= 2.7 V
V
CC
− 1.5 V I
SOURCE
= 800 µA, V
CC
= 4.5 V
Output Capacitance, C
OUT
1
10 pF
POWER REQUIREMENTS
Supply Voltage 2.7 5.5 V
Supply Current 30 55 µA
1
Guaranteed by design and characterization.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

ADT6501SRJZP085RL7

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