DataSheetWiki


DS1720 fiches techniques PDF

Dallas - Digital Thermometer and Thermostat

Numéro de référence DS1720
Description Digital Thermometer and Thermostat
Fabricant Dallas 
Logo Dallas 





1 Page

No Preview Available !





DS1720 fiche technique
DS1720
PRELIMINARY
DS1720
Econo – Digital Thermometer and
Thermostat
FEATURES
Requires no external components
Supply voltage range covers from 2.7V to 5.5V
Measures temperatures from –55°C to +125°C in
0.5°C increments. Fahrenheit equivalent is –67°F to
+257°F in 0.9°F increments
Temperature is read as a 9–bit value
Converts temperature to digital word in 1 second
(max)
Thermostatic settings are user–definable and non–
volatile
Data is read from/written via a 3–wire serial interface
(CLK, DQ, RST)
Applications include thermostatic controls, industrial
systems, consumer products, thermometers, or any
thermally sensitive system
8–pin SOIC (208 mil) package
PIN ASSIGNMENT
DQ 1 8 VDD
CLK/CONV
2 7 THIGH
RST
3 6 TLOW
GND 4 5 TCOM
DS1720S 8–PIN SOIC (208 MIL)
See Mech Drawings Section
PIN DESCRIPTION
DQ – 3–Wire Input/Output
CLK/CONV – 3–Wire Clock Input and
Stand–alone
Convert Input
RST
– 3–Wire Reset Input
GND
– Ground
THIGH
TLOW
TCOM
VDD
– High Temperature Trigger
– Low Temperature Trigger
– High/Low Combination Trigger
– Power Supply Voltage (3V – 5V)
DESCRIPTION
The DS1720 Digital Thermometer and Thermostat pro-
vides 9–bit temperature readings which indicate the
temperature of the device. With three thermal alarm out-
puts, the DS1720 can also act as a thermostat. THIGH is
driven high if the DS1720’s temperature is greater than
or equal to a user–defined temperature TH. TLOW is
driven high if the DS1720’s temperature is less than or
equal to a user–defined temperature TL. TCOM is driven
high when the temperature exceeds TH and stays high
until the temperature falls below that of TL.
User–defined temperature settings are stored in non–
volatile memory, so parts can be programmed prior to
insertion in a system, as well as used in stand–alone
applications without a CPU. Temperature settings and
temperature readings are all communicated to/from the
DS1720 over a simple 3–wire interface.
030598 1/12

PagesPages 12
Télécharger [ DS1720 ]


Fiche technique recommandé

No Description détaillée Fabricant
DS1720 Digital Thermometer and Thermostat Dallas
Dallas
DS1721 2-Wire Digital Thermometer and Thermostat Dallas
Dallas
DS1722 Digital Thermometer with SPI/3-Wire Interface Dallas
Dallas
DS1726 High-Precision 3-Wire Digital Thermometer and Thermostat Dallas
Dallas

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche