ADC32RF44IRMPR datasheet(33/135 Pages) TI2

tên linh kiện	ADC32RF44IRMPR

Giải thích chi tiết về linh kiện	ADC32RF44 Dual-Channel, 14-Bit, 2.6-GSPS, Analog-to-Digital Converter

PDF	135 Pages

Scroll/Zoom	100%

nhà sản xuất	TI2 [Texas Instruments]

Trang chủ	https://www.ti.com

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33 / 135 page

IQ 2.6 GSPS

N/2

ADC

NCO 2,

16 Bits

2.6 GSPS

IQ Data, 2.6 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

LPF

N/2

LPF

IQ Data

Real[ ]

IQ Data

ADC32RF44

www.ti.com

SBAS809A – FEBRUARY 2017 – REVISED MARCH 2017

Product Folder Links: ADC32RF44

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9.3.4.2 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 73. 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 73. Decimation Filter Implementation for Single-Band and Wide-Bandwidth Mode

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