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AD7779 Datasheet(PDF) 70 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) 70 Page - Analog Devices

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AD7779
Data Sheet
Rev. 0 | Page 70 of 97
Bits
Bit Name
Settings
Description
Reset
Access
5
DOUT_HEADER_FORMAT
DOUT Header Format
0x1
R/W
0
Status header
1
CRC header
4
RESERVED
Reserved.
0x0
R/W
[3:1]
DCLK_CLK_DIV
Divide MCLK
0x0
R/W
000
Divide by 1
001
Divide by 2
010
Divide by 4
011
Divide by 8
100
Divide by 16
101
Divide by 32
110
Divide by 64
111
Divide by 128
0
RESERVED
Reserved.
0x0
R/W
MAIN ADC METER AND REFERENCE MUX CONTROL REGISTER
Address: 0x015, Reset: 0x00, Name: ADC_MUX_CONFIG
SD ADC Reference Mux
11: External Reference REFx-/REFx+.
10: External Supply AVDD1x/AVSSx.
01: Internal Reference.
00: External Reference REFx+/REFx-
SD ADC Meter Mux
1001: External Reference REFx+/REFx+.
1000: Internal Reference +/+.
0111: Internal Reference -/+.
0110: Internal Reference +/-
0101: External Reference REFx-/REFx-
0100: External Reference REFx-/REFx+.
0011: External Reference REFx+/REFx-
0010: 280m V.
0
0
1
0
2
0
3
0
4
0
5
0
6
0
7
0
[7:6] REF_MUX_CTRL (R/W)
[1:0] RESERVED
[5:2] MTR_MUX_CTRL (R/W)
Table 65. Bit Descriptions for ADC_MUX_CONFIG
Bits
Bit Name
Settings
Description
Reset
Access
[7:6]
REF_MUX_CTRL
SD ADC Reference Mux
0x0
R/W
00
External reference REFx+/REFx−
01
Internal reference.
10
External supply AVDD1x/AVSSx.
11
External reference REFx−/REFx+.
[5:2]
MTR_MUX_CTRL
SD ADC Meter Mux
0x0
R/W
0010
280 mV
0011
External reference REFx+/REFx−
0100
External reference REFx−/REFx+
0101
External reference REFx−/REFx−
0110
Internal reference +/−
0111
Internal reference −/+



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