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DS1722S Datasheet

  • DS1722S

  • IC-SM-DIGITAL THERMOMETER

  • 986.45KB

  • 13頁

  • DALLAS   DALLAS

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PRELIMINARY
PRELIMINARY
DS1722
Digital Thermometer with
SPI/3-Wire Interface
www.dalsemi.com
FEATURES
Temperature measurements require no
external components
Measures temperatures from -55擄C to
+120擄C. Fahrenheit equivalent is -67擄F to
+248擄F
Thermometer accuracy is
鹵2.0擄C
Thermometer resolution is configurable from
8 to 12 bits (1.0擄C to 0.0625擄C resolution)
Data is read from/written to via a Motorola
Serial Peripheral Interface (SPI) or standard
3-wire serial interface
Wide analog power supply range (2.65V -
5.5V)
Separate digital supply allows for 1.8V logic
Available in an 8-pin SOIC (150 mil), 8-pin
uSOP, and flip chip package
V
DDD
CE
SCLK
GND
PIN ASSIGNMENT
1
2
3
4
8
7
6
5
V
DDA
SERMODE
SDI
SDO
V
DDD
CE
SCLK
GND
1*
2
3
4
8
7
6
5
V
DDA
SERMODE
SDI
SDO
DS1722S
8-Pin SOIC (150-mil)
DS1722U
8-PIN 碌-SOP
PIN DESCRIPTION
SERMODE
CE
SCLK
GND
V
DDA
SDO
SDI
V
DDD
- Serial Interface Mode
- Chip Enable
- Serial Clock
- Ground
- Analog Supply Voltage
- Serial Data Out
- Serial Data In
- Digital Supply Voltage
DESCRIPTION
The DS1722 Digital Thermometer and Thermostat with SPI/3-Wire Interface provides temperature
readings which indicate the temperature of the device. No additional components are required; the device
is truly a temperature-to-digital converter. Temperature readings are communicated from the DS1722
over a Motorola SPI interface or a standard 3-wire serial interface. The choice of interface standard is
selectable by the user.
For applications that require greater temperature resolution, the user can adjust the readout resolution
from 8 to 12 bits. This is particularly useful in applications where thermal runaway conditions must be
detected quickly.
For application flexibility, the DS1722 features a wide analog supply rail of 2.65V - 5.5V. A separate
digital supply allows a range of 1.8V to 5.5V.
The DS1722 is available in an 8-pin SOIC (150-mil), 8-pin uSOP, and flip chip package.
Applications for the DS1722 include personal computers/servers/workstations, cellular telephones, office
equipment, or any thermally-sensitive system.
1 of 13
021500

DS1722S 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 100

  • 集成電路 (IC)

  • PMIC - 熱管理

  • -

  • 溫度計，恒溫計

  • 內(nèi)部

  • -55°C ~ 120°C

  • ±3°C（最小值）

  • SPI?

  • 無

  • 無

  • 2.65 V ~ 5.5 V

  • -55°C ~ 120°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

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