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參數資料
| 型號： | DS7505U+T&R |
| 廠商： | Maxim Integrated |
| 文件頁數： | 7/14頁 |
| 文件大小： | 197K |
| 描述： | IC DGTL THERMOMETER 2WIRE 8-USOP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 3,000 |
| 功能： | 溫度計，恒溫計 |
| 傳感器類型： | 內部 |
| 感應溫度： | -55°C ~ 125°C |
| 精確度： | ±2°C（最小值） |
| 拓撲： | ADC（三角積分型），比較器，寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報： | 無 |
| 輸出風扇： | 無 |
| 電源電壓： | 1.7 V ~ 3.7 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 8-uMAX |
| 包裝： | 帶卷 (TR) |
Digital Thermometer and Thermostat
_______________________________________________________________________________________ 7
IN THIS EXAMPLE, THE DS7505 IS CONFIGURED
TO HAVE A FAULT TOLERANCE OF 2.
T
OS
T
HYST
TEMPERATURE
O.S. OUTPUTCOMPARATOR MODE
O.S. OUTPUTINTERRUPT MODE
INACTIVE
INACTIVE
ACTIVE
ACTIVE
CONVERSIONS
ASSUMES A READ
HAS OCCURED
Figure 4. O.S. Output Operation Example
Interrupt Mode
In interrupt mode, the O.S. output first becomes active
when the measured temperature exceeds the T
OS
value a consecutive number of times equal to the FT
value in the configuration register. Once activated, O.S.
can only be cleared by either putting the DS7505 into
shutdown mode or by reading from any register (tem-
perature, configuration, T
OS
, or T
HYST
) on the device.
Once O.S. has been deactivated, it is only reactivated
when the measured temperature falls below the T
HYST
value a consecutive number of times equal to the FT
value. Again, O.S can only be cleared by putting the
device into shutdown mode or reading any register.
Thus, this interrupt/clear process is cyclical between
T
OS
and T
HYST
events (i.e, T
OS
, clear, T
HYST
, clear,
T
OS
, clear, T
HYST
, clear, etc.). Thermostat interrupt
mode operation with FT = 2 is illustrated in Figure 4.
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