參數(shù)資料
型號: ADT7470ARQZ
廠商: ANALOG DEVICES INC
元件分類: 溫度/濕度傳感器
英文描述: DIGITAL TEMP SENSOR-SERIAL, 7BIT(s), RECTANGULAR, SURFACE MOUNT
封裝: ROHS COMPLIANT, MO-137AB, QSOP-16
文件頁數(shù): 23/40頁
文件大?。?/td> 962K
代理商: ADT7470ARQZ
ADT7470
Rev. C | Page 3 of
40
SPECIFICATIONS
TA = 40oC to +125oC, VCC = 3.0 V to 5.5 V, unless otherwise noted.
Table 1.
Parameter1, 2, 3, 4, 5
Min
Typ
Max
Unit
Test Conditions/Comments
POWER SUPPLY1
Supply Voltage
3.0
3.3
5.5
V
Supply Current, ICC
0.5
0.8
mA
Standby Current, ICC
4
μA
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
±12
%
Full-Scale Count
65,535
Nominal Input RPM
109
RPM
Fan count = 0xBFFF
329
RPM
Fan count = 0x3FFF
5,000
RPM
Fan count = 0x0438
10,000
RPM
Fan count = 0x021C
OPEN-DRAIN DIGITAL OUTPUTS, PWM1 to PWM4, SMBALERT
Output Low Voltage, VOL
0.4
V
IOUT = –8.0 mA, VCC = +3.3 V
High Level Output Current, IOH
0.1
1
μA
VOUT = VCC
OPEN-DRAIN SERIAL DATA BUS OUTPUT (SDA)
Output Low Voltage, VOL
0.4
V
IOUT = –4.0 mA, VCC = +3.3 V
High Level Output Current, IOH
0.1
1
μA
VOUT = VCC
SMBus DIGITAL INPUTS (SCL, SDA)
Input High Voltage, VIH
2.4
V
Input Low Voltage, VIL
0.4
V
Hysteresis
500
mV
DIGITAL INPUT LOGIC LEVELS (TACH INPUTS, FULL_SPEED, GPIO)
Input High Voltage, VIH
2.4
V
Input Low Voltage, VIL
0.8
V
Hysteresis
50
mV p-p
DIGITAL INPUT LOGIC LEVELS (TMP_IN)
Input High Voltage, VIH
VDD – 0.3
V
Input Low Voltage, VIL
0.4
V
DIGITAL INPUT CURRENT
Input High Current, IIH
–5
μA
VIN = VCC
Input Low Current, IIL
5
μA
VIN = 0
Input Capacitance, CIN
5
pF
1 VDD should never be floated in the presence of SCL/SDA activity. Charge injection can be sufficient to induce approximately 0.6 V on VDD.
2 All voltages are measured with respect to GND, unless otherwise specified.
3 Typical values are at %A = 25
°C and represent the most likely parametric norm.
4 Logic inputs accept input high voltages up to 5 V even when the device is operating at supply voltages below 5 V.
5 Timing specifications are tested at logic levels of VIL = 0.8 V for a falling edge and VIH = 2.0 V for a rising edge.
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