DS1631Z+ Dallas Semiconductor, DS1631Z+ Datasheet

DS1631Z+

Manufacturer Part Number

DS1631Z+

Description

Thermometer; Digital, 0 to 70 C Range, 9-12 Bit Resolution, 2-Wire Output, SOIC8

Manufacturer

Dallas Semiconductor

Datasheet

1.DS1631Z.pdf (6 pages)

Specifications of DS1631Z+

Body Style

SOIC

Brand/series

DS1631

Function

Thermostat

Mounting Type

PCB

Output

Digital

Primary Type

Thermostat

Range, Measurement

125 °C

Termination

Leaded

Voltage, Supply

5.5 V

Voltage, Switching

0.6 V

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

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FEATURES

DESCRIPTION

The DS1631, DS1631A, and DS1731 digital thermometers provide 9, 10, 11, or 12-bit temperature

readings over a -55°C to +125°C range. The DS1631 and DS1631A thermometer accuracy is ±0.5°C

from 0°C to +70°C with 3.0V ≤ V

3.0V ≤ V

points (T

EEPROM so they can be programmed prior to installation. In addition, the DS1631A automatically

begins taking temperature measurements at power-up, which allows it to function as a stand-alone

thermostat. Communication with the DS1631/DS1631A/DS1731 is achieved through a 2-wire serial

interface, and three address pins allow up to eight devices to be multidropped on the same 2-wire bus.

Pin descriptions for the DS1631/DS1631A/DS1731 are provided in Table 2 and user-accessible registers

are summarized in Table 3. A functional diagram is shown in Figure 1.

DS1631 and DS1631A Provide ±0.5°C

Accuracy over a 0°C to +70°C Range

DS1731 Provides ±1°C Accuracy over a

-10°C to +85°C Range

DS1631A Automatically Begins Taking

Temperature Measurements at Power-Up

Operating Temperature Range: -55°C to

+125°C (-67°F to +257°F)

Temperature Measurements Require No

External Components

Output Resolution is User-Selectable to 9,

10, 11, or 12 Bits

Wide Power-Supply Range (+2.7V to +5.5V)

Converts Temperature-to-Digital Word in

750ms (max)

Multidrop Capability Simplifies Distributed

Temperature-Sensing Applications

Thermostatic Settings are User-Definable

and Nonvolatile (NV)

Data is Read/Written Through 2-Wire Serial

Interface (SDA and SCL Pins)

All Three Devices are Available in 8-Pin

μSOP Packages and the DS1631 is Also

Available in a 150mil SO package—see

Table 1 for Ordering Information

and T

≤ 5.5V. The thermostat on all three devices provides custom hysteresis with user-defined trip

). The T

and T

registers and thermometer configuration settings are stored in NV

≤ 5.5V, and the DS1731 accuracy is ±1°C from -10°C to +85°C with

PIN CONFIGURATIONS

APPLICATIONS

Network Routers and Switches

Cellular Base Stations

Portable Products

Any Space-Constrained Thermally Sensitive

Product

See Table 2 for Pin Descriptions

GND

SDA

SCL

GND

Thermometer and Thermostat

(DS1631U+, DS1631AU+,

SDA

SCL

OUT

DS1631/DS1631A/DS1731

OUT

(DS1631Z+, DS1631S+)

SO (150mil and 208mil)

DS1731U+)

μSOP

High-Precision Digital

Related parts for DS1631Z+

DS1631Z+ Summary of contents

Page 1

... DS1731 accuracy is ±1°C from -10°C to +85°C with DD registers and thermometer configuration settings are stored DS1631/DS1631A/DS1731 High-Precision Digital Thermometer and Thermostat V SDA SCL OUT A GND μSOP (DS1631U+, DS1631AU+, DS1731U+) SDA SCL OUT 1 GND (150mil and 208mil) (DS1631Z+, DS1631S+) ...

Page 2

... NUMBER MARKING DS1631U+ D1631 (See Note) DS1631U+T&R D1631 (See Note) DS1631Z+ DS1631Z (See Note) DS1631 in Lead-Free 150 mil 8-Pin SO DS1631Z+T&R DS1631Z (See Note) DS1631AU+ 1631A (See Note) DS1631AU+T&R 1631A (See Note) DS1631S+ DS1631S (See Note) DS1631 in Lead-Free 208 mil 8-Pin SO DS1631S+T&R ...

Page 3

Figure 1. FUNCTIONAL DIAGRAM V DD SCL SDA ADDRESS AND I/O CONTROL GND ABSOLUTE MAXIMUM RATINGS* Voltage on any Pin Relative to Ground Operating Temperature Range Storage Temperature Range Solder Dip Temperature (10s) Reflow ...

Page 4

DC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Supply Voltage V DD DS1631, DS1631A T ERR Thermometer Error DS1731 T ERR Thermometer Error Low-Level Input V IL Voltage High-Level Input V IH Voltage SDA Low-Level V OL1 Output Voltage V OL2 Input Current ...

Page 5

AC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Temperature Conversion Time SCL Frequency f Bus Free Time Between a STOP and t START Condition START and Repeated START Hold Time t HD:STA from Falling SCL Low Period of SCL t LOW High Period ...

Page 6

EEPROM AC ELECTRICAL CHARACTERISTICS PARAMETER EEPROM Write Cycle Time EEPROM Writes EEPROM Data Retention Figure 2. TYPICAL OPERATING CURVES DS1631/DS1631A 0.8 0.6 0.4 0.2 +3 σ 0 Mean -0.2 -3 σ -0.4 -0.6 -0 REFERENCE ...

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