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ADC3541 Datasheet(PDF) 56 Page - Texas Instruments

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Part # ADC3541
Description  ADC354x 14-bit, 10-MSPS to 65-MSPS, Low-noise, Ultra-low Power ADC
PDF  68 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

ADC3541 Datasheet(HTML) 56 Page - Texas Instruments

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Figure 7-61. Register 0x25
7
6
5
4
3
2
1
0
0
DECIMATION
REAL OUT
0
0
MIX PHASE
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
Table 7-39. Register 0x25 Field Descriptions
Bit
Field
Type
Reset
Description
7
0
R/W
0
Must write 0
6-4
DECIMATION
R/W
000
Complex decimation setting.
000: Bypass mode (no
decimation)
001: Decimation by 2
010: Decimation by 4
011: Decimation by 8
100: Decimation by 16
101: Decimation by 32
others: not used
3
REAL OUT
R/W
0
This bit selects real output decimation. In this mode, the
decimation filter is a low pass filter and no complex mixing is
performed to reduce power consumption. For maximum power
savings the NCO in this case should be set to 0.
0: Complex decimation
1: Real decimation
2-1
0
R/W
0
Must write 0
0
MIX PHASE
R/W
0
This bit used to invert the NCO phase
0: NCO phase as is.
1: NCO phase inverted.
Figure 7-62. Register 0x26
7
6
5
4
3
2
1
0
MIX GAIN A
MIX RES A
FS/4 MIX A
0
0
0
0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
Table 7-40. Register 0x26 Field Descriptions
Bit
Field
Type
Reset
Description
7-6
MIX GAIN A
R/W
00
This bit applies a 0, 3 or 6-dB digital gain to the output of digital
mixer to compensate for the mixing loss for channel A.
00: no digital gain added
01: 3-dB digital gain added
10: 6-dB digital gain added
11: not used
5
MIX RES A
R/W
0
Toggling this bit resets the NCO phase of channel A and loads
the new NCO frequency. This bit does not self reset.
4
FS/4 MIX A
R/W
0
Enables FS/4 mixing for DDC A (complex decimation only).
0: FS/4 mixing disabled.
1: FS/4 mixing enabled.
3-0
0
R/W
0
Must write 0
ADC3541
SBAS840 – JULY 2020
www.ti.com
56
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Copyright © 2020 Texas Instruments Incorporated
Product Folder Links: ADC3541



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