ADC32RF83 datasheet(89/138 Pages) TI

tên linh kiện	ADC32RF83

Giải thích chi tiết về linh kiện	ADC32RF8x Dual-Channel, 3-GSPS Telecom Receiver and Feedback Devices

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ADC32RF80, ADC32RF83

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SBAS774A – MAY 2016 – REVISED DECEMBER 2016

Product Folder Links: ADC32RF80 ADC32RF83

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8.5.10.2 Register 0A2h (address = 0A2h), Main Digital Page Channel B

Figure 170. Register 0A2h

NQ ZONE EN

NYQUIST ZONE

W-0h

R/W-0h

LEGEND: R/W = Read/Write; W = Write only; -n = value after reset

Table 58. Register 0A2h Field Descriptions

Bit

Field

Type

Reset

Description

7-4

Must write 0

NQ ZONE EN

R/W

This bit allows for specification of the operating Nyquist zone.

0 = Nyquist zone specification disabled

1 = Nyquist zone specification enabled

2-0

NYQUIST ZONE

R/W

These bits specify the operating Nyquist zone for the analog

correction loop.

Set the NQ ZONE EN bit before programming these bits.

For example, at a 3-GSPS chip clock, first Nyquist zone is from

dc to 1.5 GHz, the second Nyquist zone is from 1.5 GHz to 3

GHz, and so on.

000 = First Nyquist zone (dc – fS / 2)

001 = Second Nyquist zone (fS / 2 – fS)

010 = Third Nyquist zone

011 = Fourth Nyquist zone

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