Datasheet

SNR − dBFS
66
68
70
72
74
76
V
VCM
− VCM Voltage − V
86
88
90
92
94
96
1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70
f
IN
= 50.1 MHz
External Reference Mode
SFDR − dBc
G053
SNR
SFDR
f − Frequency − MHz
−100
−90
−80
−70
−60
−50
−40
−30
−20
−10
0
0 50 100 150 200 250 300
CMRR − Common-Mode Rejection Ratio − dBc
G018
ADS6445, ADS6444
ADS6443, ADS6442
www.ti.com SLAS531B –MAY 2007–REVISED DECEMBER 2009
TYPICAL CHARACTERISTICS (continued)
All plots are at 25°C, AVDD = LVDD = 3.3 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)
PERFORMANCE IN EXTERNAL REFERENCE MODE CMRR vs FREQUENCY
Figure 58. Figure 59.
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Product Folder Link(s): ADS6445, ADS6444 ADS6443, ADS6442