參數(shù)資料
型號(hào): ADT7462ACPZ-500RL7
廠商: ON SEMICONDUCTOR
元件分類: 溫度/濕度傳感器
英文描述: DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 4Cel, SQUARE, SURFACE MOUNT
封裝: 5 X 5 MM, LFCSP-32
文件頁(yè)數(shù): 23/88頁(yè)
文件大?。?/td> 836K
代理商: ADT7462ACPZ-500RL7
ADT7462
Rev. 2 | Page 3 of 88 | www.onsemi.com
SPECIFICATIONS
TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.1
Table 1.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
POWER SUPPLY
Supply Voltage
3.0
3.3
5.5
V
Supply Current
1.5
4
mA
ADC active, interface inactive2
TEMPERATURE-TO-DIGITAL CONVERTER
TA Conditions
VCC Conditions
Internal Sensor, TA, Accuracy
±0.5
±2.25
°C
0°C ≤ TA ≤ 85°C
3 V ≤ VCC ≤ 3.6 V
±0.5
±3.25
°C
40°C ≤ TA ≤ +100°C
3 V ≤ VCC ≤ 3.6 V
±0.5
±3
°C
0°C ≤ TA ≤ 85°C
4.5 V ≤ VCC ≤ 5.5 V
±0.5
±4
°C
40°C ≤ TA ≤ +100°C
4.5 V ≤ VCC ≤ 5.5 V
Resolution
0.25
°C
Remote Sensor, TD, Accuracy (40°C ≤ TD ≤ +125°C)
±0.5
±2.25
°C
0°C ≤ TA ≤ 85°C
3 V ≤ VCC ≤ 3.6 V
±0.5
±3.25
°C
40°C ≤ TA ≤ +100°C
3 V ≤ VCC ≤ 3.6 V
±0.5
±2.75
°C
0°C ≤ TA ≤ 85°C
4.5 V ≤ VCC ≤ 5.5 V
±0.5
±3.5
°C
40°C ≤ TA ≤ +100°C
4.5 V ≤ VCC ≤ 5.5 V
Resolution
0.25
°C
Remote Sensor Source Current3
85
μA
High level
34
μA
Mid level
5
μA
Low level
Series Resistance Cancellation3
2
The ADT7462 cancels 2 kΩ in series with the
remote thermal diode
ANALOG-TO-DIGITAL CONVERTER
Total Unadjusted Error, TUE4, 5
±3.5
%
Differential Nonlinearity, DNL
±1
LSB
8 bits
Conversion Time (Voltage Input)3
8.53
9.86
ms
Conversion Time (Local Temperature)3
9.01
10.38
ms
Conversion Time (Remote Temperature)3
38.36
42.09
ms
INPUT RESISTANCE
Pin 7, Pin 8, Pin 13, Pin 21, Pin 22, Pin 25, Pin 28, Pin 29
140
Attenuators enabled
Pin 15, Pin 19
225
Attenuators enabled
Pin 23, Pin 24
66
Attenuators enabled
Pin 26
, VBATT and +1.2V2 (When Measured)
100
120
140
Attenuators cannot be disabled
VBATT Current Drain (When Measured)
80
100
nA
CR2032 battery life > 10 years
VBATT Current Drain (When Not Measured)
16
nA
CR2032 battery life > 10 years
FAN RPM TO DIGITAL CONVERTER
Accuracy
±8
%
Internal Clock Frequency
82.8
90
97.2
kHz
OPEN-DRAIN OUTPUTS (PWM, GPIO)
High Level Output Leakage Current, IOH
0.1
±1
μA
VOUT = VCC
Output Low Voltage, VOL
0.4
V
IOUT = 3 mA, VCC = +3.3 V
DIGITAL OUTPUT (RESET, ALERT, THERM)
Output Low Voltage, VOL
0.4
V
IOUT = 3 mA, VCC = +3.3 V
RESET Pulse Width
3
140
180
ms
RESET Threshold
3
3.05
3.1
V
Falling voltage
RESET Hysteresis
3
70
mV
OPEN-DRAIN SERIAL BUS OUTPUT (SDA)
Output Low Voltage, VOL
0.4
V
IOUT = 3 mA, VCC = +3.3 V
High Level Output Leakage Current, IOH
0.1
±1
μA
VOUT = VCC
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