ADS54J20 datasheet(13/117 Pages) TI2

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7.6 AC Characteristics (continued)

Typical values are at TA = 25°C, full temperature range is from TMIN = –40°C to TMAX = 85°C, ADC sampling rate = 1 GSPS,

50% clock duty cycle, AVDD3V = 3 V, AVDD = DVDD = 1.9 V, IOVDD = 1.15 V, –1-dBFS differential input, and 0-dB digital

gain (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN TYP

MAX

UNIT

THD

Total harmonic distortion

fIN = 10 MHz, AIN = –1 dBFS

dBc

fIN = 100 MHz, AIN = –1 dBFS

fIN = 170 MHz, AIN = –1 dBFS

fIN = 230 MHz, AIN = –1 dBFS

fIN = 270 MHz, AIN = –1 dBFS

fIN = 300 MHz, AIN = –1 dBFS

fIN = 370 MHz, AIN = –1 dBFS

fIN = 470 MHz, AIN = –3 dBFS

fIN = 720 MHz, AIN = –6 dBFS

fIN = 720 MHz, AIN = –6 dBFS,

gain = 5 dB

SFDR_IL

Interleaving spur

fIN = 10 MHz, AIN = –1 dBFS

dBc

fIN = 100 MHz, AIN = –1 dBFS

fIN = 170 MHz, AIN = –1 dBFS

fIN = 230 MHz, AIN = –1 dBFS

fIN = 270 MHz, AIN = –1 dBFS

fIN = 300 MHz, AIN = –1 dBFS

fIN = 370 MHz, AIN = –1 dBFS

fIN = 470 MHz, AIN = –3 dBFS

fIN = 720 MHz, AIN = –6 dBFS

fIN = 720 MHz, AIN = –6 dBFS,

gain = 5 dB

IMD3

Two-tone, third-order intermodulation

distortion

fIN1 = 185 MHz, fIN2 = 190 MHz,

AIN = –7 dBFS

–89

dBFS

fIN1 = 365 MHz, fIN2 = 370 MHz,

AIN = –7 dBFS

–79

fIN1 = 465 MHz, fIN2 = 470 MHz,

AIN = –7 dBFS

–75

Crosstalk

Isolation between channel A and B

Full-scale, 170-MHz signal on

aggressor; idle channel is victim

100

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ADS54J40

SBAS714C – MAY 2015 – REVISED DECEMBER 2020

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