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DS1726U Datasheet

  • DS1726U

  • High-Precision 3-Wire Digital Thermometer and Thermostat

  • 13頁

  • DALLAS   DALLAS

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DS1626/DS1726
www.maxim-ic.com
High-Precision 3-Wire Digital
Thermometer and Thermostat
PIN CONFIGURATION
DQ
CLK/
CNV
RST
GND
1
2
3
4
8
7
6
5
FEATURES
摟
摟
摟
摟
摟
摟
摟
摟
摟
摟
摟
Temperature Measurements Require No
External Components
Measure Temperatures from -55擄C to +125擄C
(-67擄F to +257擄F)
DS1626:
鹵0.5擄C
Accuracy from 0擄C to
+70擄C
DS1726:
鹵1擄C
Accuracy from -10擄C to
+85擄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
mMAX/mSOP
Package
V
DD
T
HIGH
T
LOW
T
COM
mSOP
(DS1626U, DS1726U)
See Table 1 for Ordering Information
See Table 2 for Pin Descriptions
APPLICATIONS
摟
摟
摟
摟
Thermostatic Controls
Industrial Controls
Consumer Products
Any Space-Constrained Thermally Sensitive
Application
DESCRIPTION
The DS1626 and DS1726 digital thermometers/thermostats provide temperature measurements and stand-
alone thermostat capability over a -55擄C to +125擄C range. The DS1626 offers 鹵0.5擄C accuracy from 0擄C to
+70擄C and the DS1726 has 鹵1擄C accuracy from -10擄C to +85擄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.
The DS1626 and DS1726 offer thermostatic functionality with three dedicated thermostat outputs (T
HIGH
,
T
LOW
, and T
COM
), and over-temperature (T
H
) and under-temperature (T
L
) user-programmable thresholds
stored in on-chip EEPROM. For stand-alone thermostat operation, T
H
and T
L
can be programmed prior to
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.
1 of 13
06/10/03

DS1726U 產(chǎn)品屬性

  • Maxim Integrated Products

  • Thermometer Thermostat

  • Local

  • Digital

  • +/- 2 C

  • Programmable

  • 3-Wire

  • 5.5 V

  • 2.7 V

  • + 125 C

  • - 55 C

  • No

  • SMD/SMT

  • uSOP-8

  • Precision Digital Thermometer/Thermostat

  • 12 bit

  • 0.95 mm

  • 3.05 mm

  • 2.7 V to 5.5 V

  • - 55 C to + 125 C

  • DS1626, DS1726

  • 1 mA

  • 3.05 mm

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