Datasheet

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InputFrequency(MHz)
0 33
Amplitude(dB)
2015105
-160
SFDR=86.2dBc
SNR=70.5dBFS
SNR(0MHzto1MHz)=86.1dBFS
SINAD=70.4dBFS
THD=85.4dBc
25 30
92
87
82
77
72
67
InputFrequency(MHz)
5 30
DynamicPerformance(SNR,SFDR)
201510 25
SNR(dBFS)
SFDR(dBc)
f =40MHz
S
0
-
-
-
-
-
-
-
-
-
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60
80
100
120
140
160
180
InputFrequency(MHz)
0 33
Amplitude(dB)
2015105 25 30
SFDR=90.9dBc
SNR=70.8dBFS
SINAD=70.7dBFS
THD=90.4dBc
0
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-140
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InputFrequency(MHz)
0 33
Amplitude(dB)
2015105
-160
SFDR=87.4dBc
SNR=70.4dBFS
SNR(0MHzto1MHz)=81.9dBFS
SINAD=70.3dBFS
THD=86.4dBc
25 30
ADS5281
ADS5282
www.ti.com SBAS397I –DECEMBER 2006–REVISED JUNE 2012
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, AVDD = +3.3V, LVDD = 1.8V, clock frequency = 65MSPS, differential clock mode, 1V
PP
clock amplitude, 50%
clock duty cycle, input frequency = 10MHz, –1dBFS differential analog input, 0dB digital gain setting, 1.5V analog input
common-mode, low-frequency noise suppression = off, internal reference mode, I
SET
resistor = 56.2kΩ, and LVDS buffer
current setting = 3.5mA, unless otherwise noted.
SPECTRAL PERFORMANCE SPECTRAL PERFORMANCE
(f
S
= 65MHz, f
IN
= 10MHz) (f
S
= 65MHz, f
IN
= 25MHz)
Figure 8. Figure 9.
SPECTRAL PERFORMANCE, LOW-FREQUENCY NOISE
SUPPRESSION MODE ENABLED
(f
S
= 65MHz, f
IN
= 25MHz) DYNAMIC PERFORMANCE vs INPUT FREQUENCY
Figure 10. Figure 11.
Copyright © 2006–2012, Texas Instruments Incorporated 27