DS7505(2015) 查看數據表（PDF） - Maxim Integrated

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DS7505
(Rev.:2015)

Digital Thermometer and Thermostat

Maxim Integrated 

DS7505

Digital Thermometer and Thermostat

General Description

The DS7505 low-voltage (1.7V to 3.7V) digital thermom-

eter and thermostat provides 9-, 10-, 11-, or 12-bit digital

temperature readings over a -55°C to +125°C range with

±0.5°C accuracy over a -0°C to +70°C range. A 9-bit reso-

lution mode is software compatible with the LM75.

The DS7505 thermostat has a dedicated open-drain

output (O.S.) and programmable fault tolerance, which

allows the user to define the number of consecutive error

conditions that must occur before O.S. is activated. There

are two thermostatic operating modes that control thermo-

stat operation based on user-defined trip points (TOS and

THYST) that are stored in EEPROM registers.

Applications

●● Networking Equipment

●● Cellular Base Stations

●● Office Equipment

●● Medical Equipment

●● Any Thermally Sensitive System

Pin Configurations

Benefits and Features

●● Extends Performance Range with a Low-Voltage,

1.7V to 3.7V Operating Range

●● Maximizes System Accuracy in Broad Range of

Thermal Management Applications

• Measures Temperature from -55°C to +125°C

(-67°F to +257°F)

• ±0.5°C Accuracy Over a 0°C to +70°C Range

• User-Configurable Resolution from 9 Bits (Default)

to 12 Bits (0.5°C to 0.0625°C Resolution)

●● Reduces Cost with No External Components and

Stand Alone Thermostat Capability

●● Increases Reliability and System Robustness

• Internally Filtered Data Lines for Noise Immunity

(50ns Deglitch)

• Bus Timeout Feature Prevents Lockup on a 2-Wire

Interface

●● Simplifies Distributed Temperature-Sensing

Applications with Multidrop Capability

• Up to Eight Devices Can Operate on a 2-Wire Bus

●● Fast 25ms (max) 9-Bit Conversion Time

●● Flexible and Nonvolatile (NV) User-Defined

Thermostatic Modes

TOP VIEW

SDA 1

SCL 2

O.S. 3

GND 4

SDA 1

SCL 2

O.S. 3

GND 4

DS7505

SO

DS7505

µMAX

8 VDD

7 A0

6 A1

5 A2

8 VDD

7 A0

6 A1

5 A2

Ordering Information

PART

TEMP RANGE PIN-PACKAGE

DS7505S+

-55°C to +125°C 8 SO (150 mils)

DS7505S+T&R

-55°C to +125°C

8 SO (150 mils),

2500-Piece T&R

DS7505U+

-55°C to +125°C 8 µMAX®

DS7505U+T&R

-55°C to +125°C

8 µMAX,

3000-Piece T&R

+Denotes a lead(Pb)-free/RoHS-compliant package.

T&R = Tape and reel.

Commands are capitalized for clarity.

μMAX is a registered trademark of Maxim Integrated Products,

Inc.

19-7471; Rev 3; 12/15

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