Datasheet

AC CHARACTERISTICS
ADS5272
SBAS324C – JUNE 2004 – REVISED JANUARY 2009 ...................................................................................................................................................... www.ti.com
T
MIN
= – 40 ° C and T
MAX
= +85 ° C. Typical values are at T
A
= +25 ° C, clock frequency = maximum specified, 50% clock duty
cycle, AVDD = 3.3V, LVDD = 3.3V, – 1dBFS, I
SET
= 56.2k Ω , internal voltage reference, and LVDS buffer current at 3.5mA per
channel, unless otherwise noted.
ADS5272
PARAMETER CONDITIONS MIN TYP MAX UNITS
DYNAMIC CHARACTERISTICS
f
IN
= 1MHz 90 dBc
f
IN
= 5MHz 77 89 dBc
SFDR Spurious-Free Dynamic Range
f
IN
= 10MHz 87 dBc
f
IN
= 20MHz 86 dBc
f
IN
= 1MHz 99 dBc
f
IN
= 5MHz 84 93 dBc
HD
2
2nd-Order Harmonic Distortion
f
IN
= 10MHz 92 dBc
f
IN
= 20MHz 86 dBc
f
IN
= 1MHz 92 dBc
f
IN
= 5MHz 77 89 dBc
HD
3
3rd-Order Harmonic Distortion
f
IN
= 10MHz 87 dBc
f
IN
= 20MHz 86 dBc
f
IN
= 1MHz 71.2 dBFS
f
IN
= 5MHz 69 71.1 dBFS
SNR Signal-to-Noise Ratio
f
IN
= 10MHz 70.8 dBFS
f
IN
= 20MHz 70 dBFS
f
IN
= 1MHz 71.1 dBFS
f
IN
= 5MHz 68.5 71 dBFS
SINAD Signal-to-Noise and Distortion
f
IN
= 10MHz 70.7 dBFS
f
IN
= 20MHz 69.9 dBFS
ENOB Effective Number of Bits f
IN
= 5MHz 11.1 11.5 Bits
5MHz Full-Scale Signal Applied to 7 Channels;
Crosstalk – 89 dBc
Measurement Taken on the Channel with No Input Signal
f
1
= 9.5MHz at – 7dBFS
Two-Tone, Third-Order
IMD3 96 dBFS
Intermodulation Distortion
f
2
= 10.2MHz at – 7dBFS
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