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AD7771 数据表(PDF) 8 Page - Analog Devices

部件名 AD7771
功能描述  8-Ch, 24-Bit Simultaneous Sampling ADC
Download  14 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7771 数据表(HTML) 8 Page - Analog Devices

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Rev. PrC | Page 7 of 13
Parameter
Test Conditions
Comment
Min
Typ
Max
Unit
2.3V≤ IOVDD ≤3.6V
0.7× IOVDD
V
Input Low Voltage, VINL
1.65V≤ IOVDD ≤1.95V
0.35× IOVDD
V
2.3V≤ IOVDD ≤3.6V
0.4
V
Hysteresis2
0.2
%
IOVDD <2.7V
0.1
%
Input Currents
-10
+10
µA
LOGIC OUTPUT (DOUT/RDY, DCLK,
SDOUT, GPIO)
Output High Voltage, VOH
IOVDD ≥ 3V, ISOURCE = 1mA
0.8× IOVDD
V
2.3≤IOVDD< 3V, ISOURCE
500μA
0.8× IOVDD
V
IOVDD <2.3V, ISOURCE =
200μA
0.8× IOVDD
V
Output Low Voltage, VOL
IOVDD ≥3V, ISINK 2mA
0.4
V
2.3≤IOVDD <3V, ISINK 1mA
0.4
V
IOVDD < 2.3V, ISINK 100μA
0.4
V
Leakage Current
Floating State
-10
+10
µA
Output Capacitance
Floating State
10
pF
ΣΔ Data Output Coding
2s Comp
SAR Data Output Coding
Binary
POWER SUPPLIES
All ΣΔ Channels Enabled
CMOS clock,
AVDD1x/AVDD2x/AVDD4
= 3.3v, IOVDD = 1.8v
AVDD1x − AVSS
3.0
3.6
V
I_AVDD1x12
Reference Buffer Pre-Q ,
VCM Enable, Internal
reference Enable
HR
17
LP
4.5
mA
Reference Buffer Enable,
VCM Enabled, Internal
reference Enabled
mA
HR
19
LP
5
mA
Reference Buffer Disable,
VCM disabled, Internal
reference Disabled
mA
HR
13
LP
3.5
mA
AVDD2 – AVSS
2.2
3.6
V
I_AVDD2x
HR
9
mA
LP
3.5
mA
AVDD4 – AVSS4
AVDD1x
3.6
IAVDD4
SAR enable, 256ksps
1.6
mA
SAR disable
0.05
uA
AVSS-DGND
-1.8
0
V
Preliminary Technical Data
AD7771


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