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參數資料
| 型號： | NCT1008DMT3R2G |
| 廠商： | ON Semiconductor |
| 文件頁數： | 4/20頁 |
| 文件大小： | 327K |
| 描述： | TMP DIO MON/SMBUS 4CH 8WDFN |
| 標準包裝： | 3,000 |
| 功能： | 溫度監控系統（傳感器） |
| 傳感器類型： | 內部和外部 |
| 感應溫度： | 0°C ~ 127°C，-64°C ~ 191°C |
| 精確度： | ±2.5°C（最小值） |
| 拓撲： | ADC（三角積分型），比較器，多路復用器，寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報： | 是 |
| 輸出風扇： | 是 |
| 電源電壓： | 2.8 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-WFDFN |
| 供應商設備封裝： | 8-WDFN（2x2） |
| 包裝： | 帶卷 (TR) |
NCT1008
http://onsemi.com
4
Table 5. ELECTRICAL CHARACTERISTICS (T
A
= 40癈 to +125癈, V
DD
= 2.8 V to 3.6 V, unless otherwise noted)
Parameter
Conditions
Min
Typ
Max
Unit
Power Supply
Supply Voltage, V
DD
2.8
3.30
3.6
V
Average Operating Supply Current, I
DD
0.0625 Conversions/Sec Rate (Note 1)
Standby Mode
240
5.0
350
30
mA
Undervoltage Lockout Threshold
V
DD
Input, Disables ADC, Rising Edge
2.55
V
Power-On Reset Threshold
1.0
2.56
V
Temperature-to-Digital Converter
Local Sensor Accuracy
3.0 V to 3.6 V
0癈 ?T
A
?+70癈
0癈 ?T
A
?+85癈
?.0
?.5
癈
Local Sensor Accuracy
2.8 V to 3.6 V
20癈 ?T
A
?+110癈
?.5
癈
Resolution
1.0
癈
Remote Diode Sensor Accuracy
3.0 V to 3.6 V
0癈 ?T
A
?+70癈, 55癈 ?T
D
(Note 2) ?+150癈
0癈 ?T
A
?+85癈, 55癈 ?T
D
(Note 2) ?+150癈
40癈 ?T
A
?+100癈, 55癈 ?T
D
(Note 2) ?+150癈
?.0
?.5
?.5
癈
Remote Diode Sensor Accuracy
2.8 V to 3.6 V
0癈 ?T
A
?+70癈, 20癈 ?T
D
?+110癈
20癈 ?T
A
?+110癈, T
D
= +40癈
?.5
?.25
癈
Resolution
0.25
癈
Remote Sensor Source Current
High Level (Note 3)
Middle Level (Note 3)
Low Level (Note 3)
220
82
13.5
mA
Conversion Time
From Stop Bit to Conversion Complete, One-shot
Mode with Averaging Switched On
40
52
ms
One-shot Mode with Averaging Off
(That Is, Conversion Rate = 16-, 32-, or
64-conversions per Second)
6.0
8.0
ms
Maximum Series Resistance Cancelled
Resistance Split Evenly on both the D+ and D Inputs
1.5
kW
Open-Drain Digital Outputs (THERM
, ALERT
/THERM2
)
Output Low Voltage, V
OL
I
OUT
= 6.0 mA
0.4
V
High Level Output Leakage Current, I
OH
V
OUT
= V
DD
0.1
1.0
mA
SMBus/I
2
C Interface (Note 3 and 4)
Logic Input High Voltage, V
IH
SCLK, SDATA
1.4
V
Logic Input Low Voltage, V
IL
SCLK, SDATA
0.8
V
Hysteresis
500
mV
SDA Output Low Voltage, V
OL
0.4
mA
Logic Input Current, I
IH
, I
IL
1.0
+1.0
mA
SMBus Input Capacitance, SCLK, SDATA
5.0
pF
SMBus Clock Frequency
400
kHz
SMBus Timeout (Note 5)
User Programmable
25
64
ms
SCLK Falling Edge to SDATA Valid Time
Master Clocking in Data
1.0
ms
1. See Table 9 for information on other conversion rates.
2. Guaranteed by characterization, but not production tested.
3. Guaranteed by design, but not production tested.
4. See SMBus/I
2
C Timing Specifications section for more information.
5. Disabled by default. Detailed procedures to enable it are in the Serial Bus Interface section of the datasheet.
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