ADS5263_15 Datasheet, PDF (18/84 Pages) Texas Instruments – Quad Channel 16-Bit, 100-MSPS High-SNR ADC

ADS5263
SLAS760D – MAY 2011 – REVISED NOVEMBER 2015
www.ti.com
Typical Characteristic – 16-Bit ADC Mode (continued)
All plots are at 25°C, AVDD = 3.3 V, LVDD = 1.8 V, maximum-rated sampling frequency, sine-wave input clock = 1.5 V_PP
differential clock amplitude, 50% clock duty cycle, –1 dBFS differential analog input, internal reference mode, 0 dB gain, 32k
point FFT (unless otherwise noted).
0
0
SNR = 78.9 dBFS
SNR = 84.9 dBFS
−10
SINAD = 73.9 dBFS
−10
SINAD = 80.4 dBFS
−20
THD = 74.6 dBc
−20
THD = 81.3 dBc
SFDR = 77.4 dBc
SFDR = 83.5 dBc
−30
−30
−40
−40
−50
−50
−60
−60
−70
−70
−80
−80
−90
−90
−100
−100
−110
−110
−120
−120
−130
−130
−140
0
5 10 15 20 25 30 35 40
Frequency (MHz)
G005
Figure 9. FFT for 65-MHz Input Signal, f_S = 80 MSPS
−140
0
5 10 15 20 25 30 35 40 45 50
Frequency (MHz)
G006
Figure 10. FFT for 3-MHz Input Signal, f_S = 100 MSPS
0
SNR = 84.1 dBFS
−10
SINAD = 76.4 dBFS
−20
THD = 76.2 dBc
SFDR = 77.7 dBc
−30
−40
−50
−60
−70
−80
−90
−100
−110
−120
−130
−140
0
5 10 15 20 25 30 35 40 45 50
Frequency (MHz)
G007
Figure 11. FFT for 15-MHz Input Signal, f_S = 100 MSPS
Figure 13. FFT for 130-MHz Input Signal, f_S = 100 MSPS
0
SNR = 78.8 dBFS
−10 _{SINAD = 73 dBFS}
−20 ^{THD = 73.2 dBc}
SFDR74.9 dBc
−30
−40
−50
−60
−70
−80
−90
−100
−110
−120
−130
−140
0
5 10 15 20 25 30 35 40 45 50
Frequency (MHz)
G008
Figure 12. FFT for 65-MHz Input Signal, f_S = 100 MSPS
0
−10
f_IN1 = 8 MHz
f_IN2 =10 MHz
−20
Each Tone at −7 dBFS Amplitude
Two-Tone IMD = 92.6 dBFS
−30
−40
−50
−60
−70
−80
−90
−100
−110
−120
−130
−140
0
5 10 15 20 25 30 35 40 45 50
Frequency (MHz)
G009
Figure 14. FFT for 2-Tone Input Signal
18
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