ADS5522IPAP Datasheet, PDF (14/32 Pages) Texas Instruments – 12-Bit, 80 MSPS Analog-To-Digital Converter

ADS5522
SBAS320C – MAY 2004 – REVISED FEBRUARY 2007
www.ti.com
TYPICAL CHARACTERISTICS (continued)
Typical values given at T_A = 25 C, AV_DD = DRV_DD = 3.3 V, sampling rate = 80 MSPS, 50% clock duty cycle, 3-Vpp
differential clock, and –1 dBFS differential input, unless otherwise noted
SPECTRAL PERFORMANCE
(FFT for 150 MHz Input Signal)
0
SFDR = 81.7 dBc
THD = 79.9 dBc
−20
SNR = 68.7 dBFS
SINAD = 68.4 dBFS
−40
−60
−80
−100
−120
0
5 10 15 20 25 30 35 40
f − Frequency − MHz
Figure 11.
SPECTRAL PERFORMANCE
(FFT for 300 MHz Input Signal)
0
SFDR = 69.0 dBc
−20
THD = 68.7 dBc
SNR = 64.8 dBFS
SINAD = 58.0 dBFS
−40
−60
−80
−100
−120
0
5 10 15 20 25 30 35 40
f − Frequency − MHz
Figure 13.
TWO-TONE
INTERMODULATION
0
f1 = 50 MHz, −7 dBFS
−20 ^{f1 = 55 MHz, −7 dBFS}
2-Tone IMD = −84.8 dBFS
−40
−60
−80
−100
−120
0
5 10 15 20 25 30 35 40
f − Frequency − MHz
Figure 15.
0
−20
−40
−60
−80
−100
−120
0
0
−20
−40
−60
−80
−100
−120
0
0
−20
−40
−60
−80
−100
−120
0
SPECTRAL PERFORMANCE
(FFT for 220 MHz Input Signal)
SFDR = 69.8 dBc
THD = 69.2 dBc
SNR = 67.0 dBFS
SINAD = 65.3 dBFS
5 10 15 20 25 30 35 40
f − Frequency − MHz
Figure 12.
TWO-TONE
INTERMODULATION
f1 = 10 MHz, −7 dBFS
f1 = 15 MHz, −7 dBFS
2-Tone IMD = −88.0 dBFS
5 10 15 20 25 30 35 40
f − Frequency − MHz
Figure 14.
TWO-TONE
INTERMODULATION
f1 = 148 MHz, −7 dBFS
f1 = 153 MHz, −7 dBFS
2-Tone IMD = −92.8 dBFS
5 10 15 20 25 30 35 40
f − Frequency − MHz
Figure 16.
14
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