ADS5560 Datasheet, PDF (29/53 Pages) Texas Instruments – 16-BIT, 40/80 MSPS ADCs WITH DDR LVDS/CMOS OUTPUTS

ADS5560
ADS5562
www.ti.com ....................................................................................................................................................................................................... SLWS207 – MAY 2008
TYPICAL CHARACTERISTICS (continued)
Typical values are at 25°C, AVDD = DRVDD = 3.3 V, sampling frequency = Max Rated, sine wave input clock, 1.5 V_PP clock
amplitude, 50% clock duty cycle, –1 dBFS differential analog input, internal reference mode, DDR LVDS interface, default fine
gain (1dB), (unless otherwise noted)
ADS5560 - 40MSPS
0
−20
−40
−60
−80
−100
−120
−140
−160
−180
0
0
−20
−40
−60
−80
−100
−120
−140
−160
−180
0
FFT for 5 MHz, -1dBFS Input Signal
SFDR = 92.7 dBc
SINAD = 82.5 dBFS
SNR = 83.2 dBFS
THD = 90 dBc
5
10
15
f − Frequency − MHz
Figure 26.
20
G022
FFT for 5 MHz, -80dBFS Input Signal
A_IN = −80 dBFS
SFDR = 31.1 dBc
SINAD = 84.7 dBFS
SNR = 84.8 dBFS
THD = 29.1 dBc
5
10
15
f − Frequency − MHz
Figure 28.
20
G024
FFT for 20 MHz, -1dBFS Input Signal
0
SFDR = 83.43 dBc
−20 SINAD = 80.2 dBFS
SNR = 82.9 dBFS
−40 _{THD = 82.55 dBc}
−60
−80
−100
−120
−140
−160
−180
0
5
10
15
f − Frequency − MHz
Figure 27.
20
G023
0
−20
−40
−60
−80
−100
−120
−140
−160
−180
0
Inter-modulation Distortion
F1 = 10.1 MHz, –7 dBFS
F2 = 5.01 MHz, –7 dBFS
F2 − 2F1 = –98.1 dBFS
2F2 − F1 = –101.7 dBFS
2F2 + F1 = –102.7 dBFS
2F1 + F2 = –106 dBFS
3F2 = –104.7 dBFS
3F1 = −105.4 dBFS
Worst Spur = −101.7 dBFS
5
10
15
f − Frequency − MHz
Figure 29.
20
G025
Copyright © 2008, Texas Instruments Incorporated
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