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AD7817ARU 데이터시트(PDF) 5 Page - Analog Devices

부품명 AD7817ARU
상세설명  Dual, Low Power CMOS, Analog Front End with DSP Microcomputer
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AD7817ARU 데이터시트(HTML) 5 Page - Analog Devices

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Data Sheet
AD7817/AD7818
Rev. D | Page 5 of 20
Parameter
AVersion1
BVersion1
SVersion1
Unit
Test Conditions/Comments
POWER REQUIREMENTS (AD7818 ONLY)6
V
DD
5.5
V max
For specified performance
2.7
V min
I
DD
Logic inputs = 0 V or V
DD
Normal Operation
2
mA max
1.3 mA typical
Using External Reference
1.75
mA max
2.5 V external reference connected
Power-Down (V
DD = 5 V)
10.75
µA max
6 µA typ
Power-Down (V
DD = 3 V)
4.5
µA max
2 µA typ
Auto Power-Down Mode
V
DD = 3 V
10 SPS Throughput Rate
6.4
µW typ
See the Power vs Throughput section
for description of power dissipation
in auto power-down mode
1 kSPS Throughput Rate
48.8
µW typ
10 kSPS Throughput Rate
434
µW typ
Power-Down
13.5
µW max
Typically 6 µW
ANALOG INPUTS (AD7817/AD7818)7
Input Voltage Range
V
REF
V
REF
V
REF
V max
0
0
0
V min
Input Leakage
±1
±1
±1
µA min
Input Capacitance
10
10
10
pF max
LOGIC INPUTS (AD7817/AD7818)4
Input High Voltage, V
INH
2.4
2.4
2.4
V min
V
DD = 5 V ±10%
Input Low Voltage, V
INL
0.8
0.8
0.8
V max
V
DD = 5 V ±10%
Input High Voltage, V
INH
2
2
2
V min
V
DD = 3 V ±10%
Input Low Voltage, V
INL
0.4
0.4
0.4
V max
V
DD = 3 V ±10%
Input Current, I
IN
±3
±3
±3
µA max
Typically 10 nA, V
IN = 0 V to VDD
Input Capacitance, C
IN
10
10
10
pF max
LOGIC OUTPUTS (AD7817/AD7818)4
Output High Voltage, V
OH
I
SOURCE = 200 µA
4
4
4
V min
V
DD = 5 V ± 10%
2.4
2.4
2.4
V min
V
DD = 3 V ± 10%
Output Low Voltage, V
OL
I
SINK = 200 µA
0.4
0.4
0.4
V max
V
DD = 5 V ± 10%
0.2
0.2
0.2
V max
V
DD = 3 V ± 10%
High Impedance Leakage Current
±1
±1
±1
µA max
High Impedance Capacitance
15
15
15
pF max
1 The B Version and the S Version only apply to the AD7817. The A Version applies to the AD7817 or the AD7818 (as stated in specification).
2 See Terminology.
3 The accuracy of the temperature sensor is affected by reference tolerance. The relationship between the two is explained in the Temperature Measurement Error Due
to Reference Error section.
4 Sample tested during initial release and after any redesign or process change that may affect this parameter.
5 On-chip reference shuts down when external reference is applied.
6 These specifications are typical for AD7818 at temperatures above 85°C and with V
DD greater than 3.6 V.
7 This refers to the input current when the part is not converting. Primarily due to the reverse leakage current in the ESD protection diodes.


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