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AD7779 Datasheet(PDF) 16 Page - Analog Devices

Part # AD7779
Description  8-Channel, 24-Bit, Simultaneous Sampling ADC
PDF  97 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7779 Datasheet(HTML) 16 Page - Analog Devices

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AD7779
Data Sheet
Rev. 0 | Page 16 of 97
Pin No.
Mnemonic
Type
Direction
Description
49
REF_OUT
Reference
Output
2.5 V Reference Output. Connect a 100 nF capacitor on this pin if using the
internal reference.
50
AVSS2B
Supply
Supply
Negative Analog Supply. Connect all the AVSSx pins together.
51
AREG2CAP
Supply
Output
Analog LDO Output 2. Decouple this pin to AVSS2B with a 1 μF capacitor.
52
AVDD2B
Supply
Supply
Positive Analog Supply. Connect this pin to AVDD2A.
53
AVSS3
Supply
Supply
Negative Analog Ground. Connect all the AVSSx pins together.
54
FORMAT1
Digital input
Input
Output Data Frame 1. See Table 17 for more details.
55
FORMAT0
Digital input
Input
Output Data Frame 0. See Table 17 for more details.
56
CLK_SEL
Digital input
Input
Select Clock Source. See Table 16 for more details.
57
VCM
Analog
output
Output
Common-Mode Voltage Output, Typical at (AVDD1 + AVSSx)/2.
58
AVDD2A
Supply
Input
Analog Supply from 2.2 V to 3.6 V. AVSS2x must not be lower than
AREGxCAP. Connect this pin to AVDD2B.
59
AREG1CAP
Supply
Output
Analog LDO Output 1. Decouple this pin to AVSS with a 1 μF capacitor.
60
AVSS2A
Supply
Input
Negative Analog supply. Connect all the AVSSx pins together.
61
AVSS4
Supply
Supply
Negative SAR Analog Supply and Reference. Connect all AVSSx pins together.
62
AVDD4
Supply
Supply
Positive SAR Analog Supply and Reference Source.
63
AUXAIN+
Analog input
Input
Positive SAR Analog Input Channel.
64
AUXAIN−
Analog input
Input
Negative SAR Analog Input Channel.
EPAD
Supply
Input
Exposed Pad. Connect the exposed pad to AVSSx.



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