Datenblatt-pdf.com


ADT6402 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADT6402
Beschreibung (ADT6401 / ADT6402) Pin-Selectable Temperature Switches
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
ADT6402 Datasheet, Funktion
Low Cost, 2.7 V to 5.5 V, Pin-Selectable
Temperature Switches in SOT-23
ADT6401/ADT6402
FEATURES
±0.5°C (typical) threshold accuracy
Pin-selectable trip points from
−45°C to +5°C in 10°C increments (undertemperature)
45°C to 115°C in 10°C increments (overtemperature)
Maximum operating temperature of 125°C
Open-drain output (ADT6401)
Push-pull output (ADT6402)
Pin-selectable hysteresis of 2°C and 10°C
Supply current of 30 μA (typical)
Space-saving, 6-lead SOT-23 package
APPLICATIONS
Medical equipment
Automotive
Cell phones
Hard disk drives
Personal computers
Electronic test equipment
Domestic appliances
Process control
GENERAL DESCRIPTION
The ADT6401/ADT6402 are trip point temperature switches
available in a 6-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 ADT6401 logic output is
active low and open-drain. The ADT6402 logic output is active
high and push-pull. The temperature is digitized to a resolution
of 0.125°C (11-bit). The pin-selectable trip point settings are
10°C apart starting from −45°C to +5°C for undertemperature
switching, and from 45°C to 115°C for overtemperature
switching.
These devices typically consume 30 μA of supply current. Hystere-
sis 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.
When the ADT6401/ADT6402 are used for monitoring tempera-
tures from 45°C to 115°C, the logic output pin becomes active
when the temperature goes higher than the selected trip point
temperature.
FUNCTIONAL BLOCK DIAGRAM
VCC GND
45
Σ-Δ
TEMPERATURE-TO-
DIGITAL CONVERTER
ADT6401
COMPARATOR
6 TOVER/TUNDER
S2 1
S1 2
S0 3
TRIP POINT AND
HYSTERESIS
DECODING
2ºC/10ºC
Figure 1.
www.DataSheet.net/
When the ADT6401/ADT6402 are used for monitoring tempera-
tures from −45°C to +5°C, 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. Pin-selectable 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, 6-lead SOT-23 package.
8. Pin-selectable temperature hysteresis of 2°C or 10°C.
9. Temperature resolution of 0.125°C.
Rev. 0
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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
©2008 Analog Devices, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.co.kr/






ADT6402 Datasheet, Funktion
ADT6401/ADT6402
TYPICAL PERFORMANCE CHARACTERISTICS
35
SAMPLE SIZE = 300
30
25
20
15
10
5
0
–0.5 –0.4 –0.3 –0.2 –0.1 0.1 0.2 0.3 0.4 0.5
TEMPERATURE ACCURACY (°C)
Figure 5. Trip Threshold Accuracy
80
70
60
50 2.7V 3.3V
40
5.5V
30
20
10
0
–80 –60 –40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
Figure 8. Output Sink Resistance vs. Temperature
45
40
5V
35
3.3V
30
25
20
15
10
5
0
–60 –40 –20
0 20 40 60 80
TEMPERATURE (°C)
100 120 140
Figure 6. Operating Supply Current vs. Temperature
120
100
80
60
www.DataSheet.net/
40
20
0
0 0.8 1.6 2.4 3.2 4.0 4.8 5.6 6.4 7.2 8.0 8.8 9.6 10.411.212.012.8
TIME (s)
Figure 9. Thermal Step Response in Perfluorinated Fluid
180
160
140
2.7V
120
100 3.3V
5.5V
80
60
40
20
0
–80 –60 –40 –20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
Figure 7. ADT6402 Output Source Resistance vs. Temperature
140
120
100
80
60
40
20
0
3.6 10.8 18.0 25.2 32.4 39.6 46.8 54.0 61.2
0 7.2 14.4 21.6 28.8 36.0 43.2 50.4 57.6
TIME (s)
Figure 10. Thermal Step Response in Still Air
Rev. 0 | Page 6 of 12
Datasheet pdf - http://www.DataSheet4U.co.kr/

6 Page









ADT6402 pdf, datenblatt
ADT6401/ADT6402
OUTLINE DIMENSIONS
2.90 BSC
1.60 BSC
PIN 1
INDICATOR
1.30
1.15
0.90
0.15 MAX
65
4
12
3
2.80 BSC
1.90
BSC
0.95 BSC
1.45 MAX
0.22
0.08
0.50
0.30
SEATING
PLANE
10° 0.60
4° 0.45
0° 0.30
COMPLIANT TO JEDEC STANDARDS MO-178-AB
Figure 23. 6-Lead Small Outline Transistor Package [SOT-23]
(RJ-6)
Dimensions shown in millimeters
ORDERING GUIDE
Model
ADT6401SRJZ-RL71
ADT6402SRJZ-RL71
1 Z = RoHS Compliant Part.
Temperature
Range
−55°C to +125°C
−55°C to +125°C
Package
Description
6-Lead SOT-23
www.DataSheet.net/
6-Lead SOT-23
Package
Option
RJ-6
RJ-6
Ordering
Quantity
3,000
3,000
Branding
T30
T32
©2008 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D07415-0-5/08(0)
Rev. 0 | Page 12 of 12
Datasheet pdf - http://www.DataSheet4U.co.kr/

12 Page





SeitenGesamt 12 Seiten
PDF Download[ ADT6402 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
ADT6401(ADT6401 / ADT6402) Pin-Selectable Temperature SwitchesAnalog Devices
Analog Devices
ADT6402(ADT6401 / ADT6402) Pin-Selectable Temperature SwitchesAnalog Devices
Analog Devices

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche