ADS5484_2 Datasheet, PDF (11/37 Pages) Texas Instruments – 16-Bit, 170/200-MSPS Analog-to-Digital Converters

ADS5484
ADS5485
www.ti.com ............................................................................................................................................... SLAS610C – AUGUST 2008 – REVISED OCTOBER 2009
TYPICAL CHARACTERISTICS (continued)
At T_A = 25°C, sampling rate = max rated, 50% clock duty cycle, 3-V_PP differential sinusoidal clock, analog input amplitude =
–1 dBFS, AVDD5 = 5 V, AVDD3 = 3.3 V, and DVDD3 = 3.3 V, unless otherwise noted.
ADS5484 DIFFERENTIAL NONLINEARITY
1.0
0.8
0.6
0.4
0.2
0.0
−0.2
−0.4
−0.6
−0.8
−1.0
0
f_S = 170 MSPS
f_IN = 10 MHz, –1 dBFS
16384
32768
49152
Code
Figure 6.
65536
G007
ADS5484 INTEGRAL NONLINEARITY
4
3
2
1
0
−1
−2
−3
−4
0
f_S = 170 MSPS
f_IN = 10 MHz, –1 dBFS
16384
32768
Code
49152
Figure 7.
65536
G008
ADS5484 AC PERFORMANCE
vs
INPUT AMPLITUDE (130-MHz Input Signal)
130
120
110
100
90
SFDR (dBFS,
Dither OFF)
80
70
SFDR (dBc,
60
Dither OFF)
50
40
30
20
10
0
−100 −90 −80 −70
SNR (dBFS,
Dither ON)
SNR (dBc,
Dither ON)
−60 −50 −40
SFDR (dBFS,
Dither ON)
SFDR (dBc,
Dither ON)
fS = 170 MSPS
fIN = 130 MHz
AIN = 0 to −100 dBFS
256k Point FFT
−30 −20 −10 0
A_IN − Input Amplitude − dBFS
G009
Figure 8.
ADS5484 AC PERFORMANCE
vs
INPUT AMPLITUDE (130-MHz Input Signal)
90
SFDR (dBc,
85
Dither ON)
SFDR (dBc,
Dither OFF)
80
75
70
f_S = 170 MSPS
65
f_IN = 130 MHz
A_IN = 0 to −40 dBFS
256k Point FFT
60
−40 −36 −32 −28 −24 −20 −16 −12 −8 −4 0
A_IN − Input Amplitude − dBFS
G010
Figure 9.
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