AFE7901 datasheet(21/160 Pages) TI

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7.5 Transmitter Electrical Characteristics (continued)

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

fDAC = 11796.48MSPS below 6GHz and fDAC = 9000MSPS above 6GHz; PLL clock mode below 6GHz output frequency

and External clock mode above 6GHz output frequency; interleave mode for 1st Nyquist, non-interleave mix mode for 2nd

Nyquist, nominal power supplies; 1 tone at -1 dBFS; DSA Attenuation =0dB; TX clock dither enabled, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

PNTXADD

Additive Phase Noise External Clock

Mode (5)

fout = 3.7GHz, fOFFSET = 100Hz

-97

dBc/Hz

fout = 3.7GHz, fOFFSET = 1kHz

-106

dBc/Hz

fout = 3.7GHz, fOFFSET = 10kHz

-117

dBc/Hz

fout = 3.7GHz, fOFFSET = 100kHz

-128

dBc/Hz

fout = 3.7GHz, fOFFSET = 1MHz

-138

dBc/Hz

fout = 3.7GHz, fOFFSET = 10MHz

-144

dBc/Hz

(1)

Measured with differential 100 ohm across TxP/M. The DC bias to 1.8V to each TxP/M at each pin remains and is not removed. Other

external components on the TX paths are disconnected.

(2)

After DSA calibration procedure

(3)

measured with 1µH DC feed inductor

(4)

measured with 0.39µH DC feed inductor

(5)

Input clock phase noise subtracted.

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AFE7901

SBASAO5 – APRIL 2023

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