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| 型号： | NCT72CMTR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 4/20页 |
| 文件大小： | 326K |
| 描述： | IC REMOTE THERMAL SENSOR 8-WDFN |
| 标准包装： | 1 |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部和外部 |
| 感应温度： | 0°C ~ 127°C，-64°C ~ 191°C |
| 精确度： | ±2.5°C |
| 拓扑： | ADC，比较器，多路复用器，寄存器库 |
| 输出类型： | 2 线串行，I²C?/SMBUS? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 2.8 V ~ 3.6 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN |
| 供应商设备封装： | 8-WDFN（2x2） |
| 包装： | 标准包装 |
| 其它名称： | NCT72CMTR2GOSDKR |
NCT72
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
I
OUT
= 6.0 mA
0.4
V
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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