参数资料
型号: ADT7461ARMZ-2REEL
厂商: ON Semiconductor
文件页数: 4/20页
文件大小: 268K
描述: IC SENSOR TEMP DGTL 2CH 8MSOP
产品变化通告: MFG CHG Notification ADI to ON Semi
标准包装: 3,000
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,-55°C ~ 150°C
精确度: ±3°C
拓扑: ADC,比较器,多路复用器,寄存器库
输出类型: 2 线 SMBus?
输出警报:
输出风扇:
电源电压: 3 V ~ 5.5 V
工作温度: -40°C ~ 120°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: Micro8?
包装: 带卷 (TR)
ADT7461
http://onsemi.com
4
Table 5. ELECTRICAL CHARACTERISTICS (T
A
= 40癈 to +120癈, V
DD
= 3.0 V to 5.5 V, unless otherwise noted).
Parameter
Conditions
Min
Typ
Max
Unit
Power Supply
Supply Voltage, V
DD
3.0
3.30
5.5
V
Average Operating Supply Current, I
DD
0.0625 Conversions/Sec Rate (Note 1)
Standby Mode, 40癈 d T
A
 d +85癈
Standby Mode, +85癈 d T
A
 d +120癈



170
5.5
5.5
215
10
20
mA
Undervoltage Lockout Threshold
V
DD
 input, disables ADC, rising edge
2.2
2.55
2.8
V
Power-On-Reset Threshold
1.0

2.5
V
Temperature-To-Digital Converter
Local Sensor Accuracy
40癈 d T
A
 d +100癈, 3.0 V d V
DD
 d 3.6 V

?.0
?.0
Resolution

1.0

Remote Diode Sensor Accuracy
+60癈 d T
A
 d +100癈,
55癈 d T
D
 (Note 2) d +150?/SPAN>C, 3.0 V d V
DD
 d 3.6 V
40癈 d T
A
 d +120癈,
55癈 d T
D
 (Note 2)  d +150?/SPAN>C, 3.0 V d V
DD
 d 5.5 V




?.0
?.0
Resolution

0.25

Remote Sensor Source Current
High Level (Note 3)
Middle Level (Note 3)
Low Level (Note 3)



96
36
6.0



mA
Conversion Time
From stop bit to conversion complete (both channels),
one-shot mode with averaging switched on
One-shot mode with averaging off (that is, conversion
rate = 16, 32, or 64 conversions per second)
32.13
3.2


114.6
12.56
ms
Maximum Series Resistance Cancelled
Resistance split evenly on both the D+ and D inputs

3.0

kW
Open-Drain Digital Outputs (THERM
, ALERT
/THERM2
)
Output Low Voltage, V
OL
I
OUT
 = 6.0 mA (Note 3)


0.4
V
High Level Output Leakage Current, I
OH
V
OUT
 = V
DD
 (Note 3)

0.1
1.0
mA
ALERT
 Output Low Sink Current
ALERT
 Forced to 0.4 V
1.0


mA
SMBus Interface (Note 3 and 4)
Logic Input High Voltage, V
IH
 SCLK, SDATA
3.0 V d V
DD
 d 3.6 V
2.1


V
Logic Input Low Voltage, V
IL
 SCLK, SDATA
3.0 V d V
DD
 d 3.6 V


0.8
V
Hysteresis

500

mV
SMBus Output Low Sink Current
SDATA Forced to 0.6 V
6.0


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 the SMBUS Timing Specifications section for more information.
5.  Disabled by default; see the Serial Bus Interface section for details on enabling it.
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