ADC32RF44IRMPR datasheet(23/135 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

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nhà sản xuất	TI2 [Texas Instruments]

Trang chủ	https://www.ti.com

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23 / 135 page

INxP

INxM

RIN

TI Device

CIN

ZIN = RIN || CIN

SDD11 = (ZIN ± 100) / (ZIN + 100)

ADC32RF44

www.ti.com

SBAS809A – FEBRUARY 2017 – REVISED MARCH 2017

Product Folder Links: ADC32RF44

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9.3 Feature Description

9.3.1 Analog Inputs

The ADC32RF44 analog signal inputs are designed to be driven differentially. The analog input pins have

internal analog buffers that drive the sampling circuit. The ADC32RF44 provides on-chip, differential termination

to minimize reflections. The buffer also helps isolate the external driving circuit from the internal switching

currents of the sampling circuit, thus resulting in a more constant SFDR performance across input frequencies.

The common-mode voltage of the signal inputs is internally biased to CM using the 32.5-

Ω termination resistors

that allow for ac-coupling of the input drive network. Figure 58 and Figure 59 show SDD11 at the analog inputs

from dc to 5 GHz with a 100-Ω reference impedance.

Figure 58. Equivalent Input Impedance

Figure 59. SDD11 Over the Input Frequency Range

ADC32RF44IRMPR bảng dữ liệu(PDF) 23 Page - Texas Instruments