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071107

FEATURES

Temperature Measurements Require No

External Components

Measure Temperatures from -55°C to +125°C

(-67°F to +257°F)

DS1626:

±0.5°C Accuracy from 0°C to

+70°C

DS1726:

±1°C Accuracy from -10°C to

+85°C

Output Resolution is User-Selectable to 9, 10,

11, or 12 Bits

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

Convert Temperature to Digital Word in

750ms (max)

Stand-Alone Thermostat Capability

Thermostatic Settings are User-Definable and

Nonvolatile (NV)

Data is Read/Written Through a 3-Wire Serial

Interface

Available in 8-Pin

μMAX/μSOP Package

PIN CONFIGURATION

DESCRIPTION

The DS1626 and DS1726 digital thermometers/thermostats provide temperature measurements and stand-

alone thermostat capability over a -55°C to +125°C range. The DS1626 offers ±0.5°C accuracy from 0°C to

+70°C and the DS1726 has ±1°C accuracy from -10°C to +85°C. The resolution of the measured

temperature is user-selectable from 9 to 12 bits. Communication with the DS1626 and DS1726 is achieved

through a 3-wire serial bus.

installation, and the DS1626/DS1726 can be configured to automatically begin taking temperature

measurements at power-up.

Pin descriptions for the DS1626 and DS1726 are provided in Table 2 and user-accessible registers are

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

DS1626/DS1726

High-Precision 3-Wire Digital

Thermometer and Thermostat

www.maxim-ic.com

μSOP

(DS1626U, DS1726U)

CLK/

CNV

GND

RST

DQ

6

8

7

5

3

1

2

4

See Table 1 for Ordering Information

See Table 2 for Pin Descriptions

APPLICATIONS

Thermostatic Controls

Industrial Controls

Consumer Products

Any Space-Constrained Thermally Sensitive

Application