ADT6504 datasheet, PDF - EEWORLD Datasheet

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ADT6504: DescriptionLow Cost, 2.7 V to 5.5 V, Micropower Temperature Switches in SOT-23; File Size182KB，16 Pages; ManufacturerADI; Websitehttps://www.analog.com

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ADT6504 Overview

Low Cost, 2.7 V to 5.5 V, Micropower Temperature Switches in SOT-23

User Manual

【User Guides】UG-1304: Evaluating the AD7380 16-Bit and AD7381 14-Bit, 2-Channel, Simultaneous Sampling, Successive Approximation ADCs

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Preliminary Technical Data

FEATURES

±0.5°C (typ) accuracy over temperature range

Factory set trip points from −45°C to +15°C in 10°C

increments

Factory set trip points from +35°C to +115°C in 10°C

increments

No external components required

Max 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

(typ)

Space saving 5-lead SOT23 package

Low Cost, 2.7 V to 5.5 V, Micropower

Temperature Switches in SOT-23

ADT6501/ADT6502/ADT6503/ADT6504

FUNCTIONAL BLOCK DIAGRAM

DECIMATOR

TEMPERATURE

SENSOR

LPF

1-BIT

12-BIT

–

REFERENCE

Σ-Δ

1-BIT

DAC

DIGITAL

COMPARATOR

TOVER

CLK AND

TIMING

GENERATION

FACTORY PRESET

TRIP POINT

2°C/10°C

APPLICATIONS

Medical equipment

Automotive

Cell phone

Hard disk drives

Personal computers

Electronic test equipment

Domestic appliances

Process control

GND

HYST

Figure 1.

GENERAL DESCRIPTION

The ADT6501/ADT6502/ADT6503/ADT6504 are trip point

temperature switches available in a 5-lead SOT23 package. It

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 +0.0625°C

(12 bit). The factory 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 30μA 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.

ADT6501 and ADT6502 are used for monitoring temperatures

from +35°C to +115°C only. Hence, 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 temperatures from −45°C to +15°C

only. Hence, the logic output pin becomes active when the

temperature goes lower than the selected trip point

temperature.

PRODUCT HIGHLIGHTS

±0.5°C typical from −55°C to +125°C.

Factory threshold settings from −45°C to +115°C in 10°C

increments

Supply voltage is 2.7 V to 5.5 V.

Supply current of 30

μA.

Space-saving 5-lead SOT23 package.

Pin selectable temperature hysteresis of 2°C or 10°C.

Temperature resolution of 0.0625°C.

Rev. PrA

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

06096-001

ADT6501/ADT6502/ADT6503/ADT6504

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

Functional Block Diagram .............................................................. 1

General Description ......................................................................... 1

Product Highlights ........................................................................... 1

Specifications..................................................................................... 3

Absolute Maximum Ratings ....................................................... 4

ESD Caution.................................................................................. 4

Pin Configuration and Function Descriptions............................. 5

Typical Performance Characteristics ............................................. 6

Theory of Operation ........................................................................ 8

Circuit Information...................................................................... 8

Preliminary Technical Data

Converter Details ..........................................................................8

Factory Programmed Threshold Range.....................................8

Hysteresis Input .............................................................................8

Functional Description.................................................................9

Application Information................................................................ 10

Thermal Response Time ........................................................... 10

Self-Heating Effects.................................................................... 10

Supply Decoupling ..................................................................... 10

Temperature Monitoring........................................................... 11

Outline Dimensions ....................................................................... 12

Ordering Guide .......................................................................... 12

Rev. PrA | Page 2 of 16

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