參數(shù)資料
型號: DS1775
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 溫度/濕度傳感器
英文描述: SOT23 Digital Thermometer and Thermostat(SOT23數(shù)字溫度計和恒溫控制器)
中文描述: DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), RECTANGULAR, SURFACE MOUNT
封裝: SOT-23, 5 PIN
文件頁數(shù): 2/13頁
文件大?。?/td> 307K
代理商: DS1775
DS1775
2 of 13
The DS1775 is assembled in a compact SOT23–5 package allowing for low–cost thermal
monitoring/control in space–constrained applications. The low thermal mass allows for time constants
previously only possible with thermistors.
Applications for the DS1775 include personal computers/servers/workstations, cellular telephones, office
equipment, or any thermally–sensitive system.
DETAILED PIN DESCRIPTION
Table 1
PIN
SYMBOL
DESCRIPTION
PIN 1
SCL
Clock input/output pin
for 2-wire serial communication port. This input
should be tied to GND for standalone thermostat operation.
PIN 2
GND
Ground pin
.
PIN 3
O.S.
Thermostat output
Open-drain output becomes active when temperature
exceeds T
OS
. Device configuration defines means to clear over-temperature
state.
PIN 4
V
DD
Supply Voltage
2.7V – 5.5V input power pin.
PIN 5
SDA
Data input/output pin
for 2-wire serial communication port. In the standalone
thermostat mode, this input selects hysteresis.
OVERVIEW
A block diagram of the DS1775 is shown in Figure 1. The DS1775 consists of five major components:
1.
Precision temperature sensor
2.
Analog–to–digital converter
3.
2–wire interface electronics
4.
Data registers
5.
Thermostat comparator
The factory–calibrated temperature sensor requires no external components. Upon power–up, the DS1775
begins temperature conversions with the default resolution of 9 bits (0.5
°
C resolution). The host can
periodically read the value in the temperature register, which contains the last completed conversion. As
conversions are performed in the background, reading the temperature register does not affect the
conversion in progress.
In power–sensitive applications the user can put the DS1775 into a shutdown mode, under which the
sensor will complete and store the conversion in progress and revert to a low–power standby state. In
applications where small incremental temperature changes are critical, the user can change the conversion
resolution from 9 bits to 10, 11, or 12. Each additional bit of resolution approximately doubles the
conversion time. This is accomplished by programming the configuration register. The configuration
register defines the conversion state, thermometer resolution/conversion time, active state of the
thermostat output, number of consecutive faults to trigger an alarm condition, and the method to
terminate an alarm condition.
The user can also program over–temperature (T
OS
) and under–temperature (T
HYST
) setpoints for
thermostatic operation. The power–up state of T
OS
is 80
°
C and that for T
HYST
is 75
°
C. The result of each
temperature conversion is compared with the T
OS
and T
HYST
setpoints. The DS1775 offers two modes for
temperature control, the comparator mode and the interrupt mode. This allows the user the flexibility to
customize the condition that would generate and clear a fault condition. Regardless of the mode chosen,
the O.S. output will become active only after the measured temperature exceeds the respective trippoint a
consecutive number of times; the number of consecutive conversions beyond the limit to generate an O.S.
相關(guān)PDF資料
PDF描述
DS1800 Dual Inverting Log Gain/Attenuator(雙路反相對數(shù)放大/衰減器)
DS1801 Dual Audio Taper Potentiometer(雙路音頻抽頭電位器)
DS1802 Dual Audio Taper Potentiometer with Push Button Control(帶按鈕控制的雙路音頻抽頭電位器)
DS1803 Addressable Dual Digital Potentiometer(可尋址雙路數(shù)字電位器)
DS1804 NV Trimmer Potentiometer(非易失性微調(diào)電位器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1775_02 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:SOT23-5 Digital Thermometer and Thermostat
DS1775_13 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Digital Thermometer and Thermostat in SOT23
DS1775R/T&R 制造商:Maxim Integrated Products 功能描述:DIGITAL THERMOMETER SOT23 T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOM/STAT DIG 000 SOT-23-5
DS1775R/T&R 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
DS1775R/TR1 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:SOT23-5 Digital Thermometer and Thermostat