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參數(shù)資料
| 型號(hào)： | AD7414ARM-2REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 10BIT(s), 2Cel, SQUARE, SURFACE MOUNT |
| 封裝： | MICRO, SOIC-8 |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大小： | 182K |
| 代理商： | AD7414ARM-2REEL7 |
–2–
REV. PrB
AD7414–SPECIFICATIONS1 (TA = TMIN to TMAX, VDD = 2.7V to 5.5V, unless otherwise noted)
PRELIMINAR
Y
TECHNICAL
DA
TA
Figure 1. Diagram for Serial Bus Timing
t1
t4
t 2
t
3
t5
SC L
SD A
DA T A IN
SD A
DA T A O U T
t6
Parameter
A Version
S Version
Units
Test Conditions/Comments
TEMPERATURE SENSOR AND ADC
Accuracy
±2.0
oC max
TA = -55
oC to +125oC
±3.0
oC max
TA = -55
oC to +135oC
Resolution
10
Bits
Update Rate, tR
400
s typ
Temperature Conversion Time
25
s typ
POWER SUPPLIES
Supply Current
1.2
mA max
Peak current when part is
converting.
Supply Current
2
25
A
Average Supply Current with
serial bus inactive. Not convert
ing.
Supply Current
3
60
A
Average Supply Current with
serial bus active. Not converting.
DIGITAL INPUT
Input High Voltage, VIH
2.4
V min
Input Low Voltage, VIL,
0.8
V max
Input Current, IIN
±1
A max
VIN = 0V to VDD
Input Capacitance, CIN
10
pF max
All Digital Inputs
DIGITAL OUTPUT
Output High Current, IOH
11
A max V
OH = 5V
Output Low Voltage, VOL
0.4
V max
IOL = 1.6mA
Output Capacitance, COUT
50
pF max
ALERT Output Saturation Voltage
0.8
V max
IOUT = 4mA
AC ELECTRICAL CHARACTERISTICS
4
Serial Clock Period, t1
2.5
s min
See Figure 1
Data In Setup Time to SCL High, t2
50
ns min
See Figure 1
Data Out Stable after SCL Low, t3
0
ns min
See Figure 1
SDA Low Setup Time to SCL Low
(Start Condition), t4
50
ns min
See Figure 1
SDA High Hold Time after SCL High
(Stop Condition), t5
50
ns min
See Figure 1
SDA and SCL Fall Time, t6
90
ns max
See Figure 1
Specifications subject to change without notice.
NOTES
1 Temperature Ranges as follows: A Version = -55
oC to +125oC, B Version = -55oC to +135oC.
2 Peak supply current is approximately 1.2mA with serial bus inactive and part converting. This peak supply current is required for 25us (the conversion time) out of every
400us (the conversion rate).
3 Peak supply current is approximately 1.2mA with serial bus active and part converting. The 60uA average current is derived assuming a 400kHz serial clock being active
for 16 serial clock cycles every 400us. If the temperature read is at a lower rate, the average current will reduce accordingly.
4 The SDA & SCL timing is measured with the input filters turned on so as to meet the Fast-Mode I
2C specification. Switching off the input filters improves the transfer
rate but has a negative affect on the EMC behaviour of the part.
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