AFE7901 datasheet(27/160 Pages) TI

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7.6 RF ADC Electrical Characteristics (continued)

Typical values at TA = +25°C, full temperature range is TA,MIN = -40°C to TJ,MAX = +110°C; RX Output Rate = 491.52MSPS,

fADC = 2949.12MSPS; PLL clock mode with fREF = 491.52MHz; nominal power supplies; DSA Setting =3dB; SerDes rate

=24.33Gbps; unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TX-RX Isolation

1TXOUT to 1RXIN

3TXOUT to 2RXIN

fIN = 5 MHz, fADC = 1500MSPS, fNCO

= 17MHz, Decimate by 48

-105

fIN = 30 MHz, fADC = 1500MSPS, fNCO

= 30MHz, Decimate by 24

-101

fIN = 400 MHz

-99

fIN = 830 MHz

-86

fIN = 1760 MHz

-87

fIN = 2610 MHz

-84

fIN = 3610 MHz

-82

fIN = 4910 MHz

-82

(1)

The input fullscale at minimum attenuation can be reduce by adding a digital gain range to the DSA, extending the useful range of the

DSA. The noise figure remains constant over the digital gain range.

(2)

After HD2 trim on specific printed circuit board.

(3)

From DSA = 3dB down to 0dB, NSD increases 1dB per DSA dB

(4)

NF increase 1dB per DSA 1dB above DSA = 3dB

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AFE7901

SBASAO5 – APRIL 2023

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