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DS75S Datasheet

  • DS75S

  • 2.Wire Thermal Watchdog

  • 242.67KB

  • 13頁

  • DALLAS   DALLAS

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DS75
2鈥揥ire Thermal Watchdog
www.dalsemi.com
FEATURES
=Temperature
measurements require no
external components
Measures temperatures from 鈥?5擄C to
+125擄C. Fahrenheit equivalent is 鈥?7擄F to
+257擄F.
Thermometer accuracy is
鹵2.0擄C.
Thermometer resolution is configurable from
nine (default) to 12 bits (0.5擄C to 0.0625擄C
resolution)
9鈥揵it readout mode features a max
conversion time of 150 ms.
Thermostatic settings are user definable.
Data is read from/written via a 2鈥搘ire serial
interface. (open drain I/O lines). 3鈥揵it
addressability
Wide power supply range (2.7V 鈥?5.5V).
Applications include personal computers,
cellular telephones, office equipment, or any
thermally sensitive system.
Pin/software compatible to LM75CIM鈥搙
Thermal Watchdog in 9鈥揵it (default) mode.
8鈥損in 150 mil SOIC package.
PIN ASSIGNMENT
SDA
SCL
O.S.
GND
1
2
3
4
8
7
6
5
V
DD
A
0
A
1
A
2
DS75S
8-PIN SOIC (150 MIL)
PIN DESCRIPTION
SDA
SCL
GND
O.S.
A0
A1
A2
V
DD
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
2鈥揥ire Serial Data Input/Output
2鈥揥ire Serial Clock
Ground
Thermostat Output Signal
Chip Address Input
Chip Address Input
Chip Address Input
Power Supply Voltage
DESCRIPTION
The DS75 2鈥搘ire thermal watchdog provides 9鈥揵it temperature readings which indicate the temperature
of the device. Thermostat settings and temperature readings are all communicated to/from the DS75 over
a simple 2鈥搘ire serial interface. No additional components are required; the device is truly a
鈥渢emperature鈥搕o鈥揹igital鈥?converter.
The DS75 has three address bits that allow a user to multidrop up to eight sensors along the 2鈥搘ire bus,
greatly simplifying the bussing of distributed temperature sensing networks.
The open鈥揹rain thermal alarm output, O.S., becomes active when the temperature of the device exceeds a
user鈥揹efined temperature T
OS
. The number of consecutive faults required to set O.S. active is
configurable by the user. The device can also be configured in the interrupt or comparator mode, to
customize the method which clears the fault condition.
For applications that require greater temperature resolution, the user can adjust the readout resolution
from 9 to 12 bits. This is particularly useful in applications where thermal runaway conditions must be
detected quickly.
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DS75S 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

  • 內部

  • -55°C ~ 125°C

  • ±3°C（最小值）

  • ADC（三角積分型），比較器，寄存器庫

  • I²C?/SMBus?

  • 無

  • 無

  • 2.7 V ~ 5.5 V

  • -55°C ~ 125°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

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