参数资料
型号: ADT7461AARMZ-2RL7
厂商: ON SEMICONDUCTOR
元件分类: 温度/湿度传感器
英文描述: DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2.5Cel, SQUARE, SURFACE MOUNT
封装: LEAD FREE MSOP-8
文件页数: 14/19页
文件大小: 276K
代理商: ADT7461AARMZ-2RL7
ADT7461A
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS TA = 40°C to +125°C, VDD = 3.0 V to 3.6 V, unless otherwise noted.
Parameter
Conditions
Min
Typ
Max
Unit
Power Supply
Supply Voltage, VDD
3.0
3.30
3.6
V
Average Operating Supply Current, IDD
0.0625 Conversions/Sec Rate (Note 1)
Standby mode
240
5.0
350
30
mA
Undervoltage Lockout Threshold
VDD input, disables ADC, rising edge
2.55
V
PowerOnReset Threshold
1.0
2.5
V
TemperatureToDigital Converter
Local Sensor Accuracy
0°C ≤ TA ≤ +70°C
0°C ≤ TA ≤ +85°C
40°C ≤ TA ≤ +100°C
±1.0
±1.5
±2.5
°C
Resolution
1.0
°C
Remote Diode Sensor Accuracy
0°C ≤ TA ≤ +70°C, 55°C ≤ TD (Note 2) ≤ +150°C
0°C ≤ TA ≤ +85°C, 55°C ≤ TD (Note 2) ≤ +150°C
40°C ≤ TA ≤ +100°C, 55°C ≤ TD (Note 2) ≤ +150°C
±1.0
±1.5
±2.5
°C
Resolution
0.25
°C
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, oneshot
mode with averaging switched on
40
52
ms
Oneshot mode with averaging off (that is, conversion
rate = 16, 32, or 64conversions per second)
6.0
8.0
ms
Maximum Series Resistance Cancelled
Resistance split evenly on both the D+ and D– inputs
1.5
kW
OpenDrain Digital Outputs (THERM, ALERT/THERM2)
Output Low Voltage, VOL
IOUT = 6.0 mA
0.4
V
High Level Output Leakage Current, IOH
VOUT = VDD
0.1
1.0
mA
SMBus Interface (Note 3 and 4)
Logic Input High Voltage, VIH SCLK, SDATA
3.0 V ≤ VDD ≤ 3.6 V
2.1
V
Logic Input Low Voltage, VIL SCLK, SDATA
3.0 V ≤ VDD ≤ 3.6 V
0.8
V
Hysteresis
500
mV
SDA Output Low Voltage, VOL
0.4
mA
Logic Input Current, IIH, IIL
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 5 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 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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