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ADC3421 Datasheet(PDF) 65 Page - Texas Instruments

Part # ADC3421
Description  ADC342x Quad-Channel, 12-Bit, 25-MSPS to 125-MSPS, Analog-to-Digital Converter
PDF  80 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

ADC3421 Datasheet(HTML) 65 Page - Texas Instruments

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ADC3421, ADC3422, ADC3423, ADC3424
www.ti.com
SBAS673A – JULY 2014 – REVISED OCTOBER 2015
9.6.1.31 Register 534h (address = 534h)
Figure 177. Register 534h
7
6
5
4
3
2
1
0
0
0
DIS DITH CHC
0
DIS DITH CHC
0
0
0
W-0h
W-0h
R/W-0h
W-0h
R/W-0h
W-0h
W-0h
W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 40. Register 534h Field Descriptions
Bit
Field
Type
Reset
Description
7-6
0
W
0h
Must write 0.
5
DIS DITH CHC
R/W
0h
Set this bit with bits 3 and 2 of register 01h.
00 = Default
11 = Dither is disabled for channel C. In this mode, SNR
typically improves by 0.2 dB at 70 MHz.
4
0
W
0h
Must write 0.
3
DIS DITH CHC
R/W
0h
Set this bit with bits 3 and 2 of register 01h.
00 = Default
11 = Dither is disabled for channel C. In this mode, SNR
typically improves by 0.2 dB at 70 MHz.
2-0
0
W
0h
Must write 0.
9.6.1.32 Register 539h (address = 539h)
Figure 178. Register 539h
7
6
5
4
3
2
1
0
0
0
0
0
SP1 CHC
0
0
0
W-0h
W-0h
W-0h
W-0h
R/W-0h
W-0h
W-0h
W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 41. Register 539h Field Descriptions
Bit
Field
Type
Reset
Description
7-4
0
W
0h
Must write 0.
3
SP1 CHC
R/W
0h
This bit sets the special mode for best performance on channel
C.
Always write 1 after reset.
2-0
0
W
0h
Must write 0.
9.6.1.33 Register 608h (address = 608h)
Figure 179. Register 608h
7
6
5
4
3
2
1
0
HIGH IF MODE<7:6>
0
0
0
0
0
0
W-0h
W-0h
W-0h
W-0h
W-0h
W-0h
R/W-0h
W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 42. Register 608h Field Descriptions
Bit
Field
Type
Reset
Description
7-6
HIGH IF MODE<7:6>
R/W
0h
Set the HIGH IF MODE[7:0] bits together to FFh.
Improves HD3 by a couple of dB for IF > 100 MHz.
5-0
0
W
0h
Must write 0.
Copyright © 2014–2015, Texas Instruments Incorporated
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Product Folder Links: ADC3421 ADC3422 ADC3423 ADC3424



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