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ADC32RF83 データシート(PDF) 38 Page - Texas Instruments

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部品番号 ADC32RF83
部品情報  ADC32RF8x Dual-Channel, 3-GSPS Telecom Receiver and Feedback Devices
PDF  138 Pages
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メーカー  TI [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI - Texas Instruments

ADC32RF83 データシート(HTML) 38 Page - Texas Instruments

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IQ 3 GSPS
N/2
ADC
NCO 2,
16 Bits
3 GSPS
IQ data, 3 GSPS
RX1 IQ Output
GPIO
SYSREF
RX2 IQ Output
NCO 1,
16 Bits
NCO 3,
16 Bits
NCO 4,
16 Bits
RX1 Real Output
Wideband IQ Output
2,3
Wideband Real Output
RX2 Real Output
JESD204B
fOUT / 4
2
fOUT / 4
fOUT / 4
LPF
LPF
2
LPF
LPF
N/2
2
LPF
LPF
IQ data
Real[ ]
Real[ ]
Real[ ]
IQ data
IQ data
38
ADC32RF80, ADC32RF83
SBAS774A – MAY 2016 – REVISED DECEMBER 2016
www.ti.com
Product Folder Links: ADC32RF80 ADC32RF83
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
8.3.4.2 Operating Mode: Wide-Bandwidth Observation Receiver
This mode is intended for using a DDC with a wide bandwidth output, but for multiple bands. This mode uses a
single DDC chain where up to three NCOs can be used to perform wide-bandwidth observation in a multi-band
environment, as shown in Figure 95. The three NCOs can be switched dynamically using either the GPIO pins or
an SPI command. All three NCOs operate continuously to ensure phase continuity; however, when the NCO is
switched, the output data are invalid until the decimation filters are completely flushed with data from the new
band.
NOTE: Red traces show SYSREF going to the NCO blocks.
Figure 95. Decimation Filter Implementation for Single-Band and Wide-Bandwidth Mode



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