ADS5295IPFP datasheet(21/93 Pages) TI2

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−140

−130

−120

−110

−100

−90

−80

−70

−60

−50

−40

−30

−20

−10

Frequency (MHz)

SNR = 77 dBFS

SINAD = 77 dBFS

SFDR = 94.4 dBc

THD = 100.9 dBc

Decimate−by−8 Filter Enabled

G030

−45

−42

−39

−36

−33

−30

−27

−24

−21

−18

−15

−12

−9

−6

−3

0.02

0.1

10 15

Frequency (MHz)

K = 2

K = 3

K= 4

K = 5

K = 6

K = 7

K = 8

K = 9

K = 10

G031

−140

−130

−120

−110

−100

−90

−80

−70

−60

−50

−40

−30

−20

−10

12.5

Frequency (MHz)

SNR = 77.19 dBFS

SINAD = 77 dBFS

SFDR = 91.2 dBc

THD = 90.6 dBc

Decimate−by−4 Filter Enabled

G028

−140

−130

−120

−110

−100

−90

−80

−70

−60

−50

−40

−30

−20

−10

Frequency (MHz)

SNR = 76.4 dBFS

SINAD = 72.9 dBFS

SFDR = 74.5 dBc

THD = 74.4 dBc

4 Channels Averaged

G029

ADS5295

www.ti.com

SBAS595 – DECEMBER 2012

TYPICAL CHARACTERISTICS: Digital Processing (continued)

Typical values are at TA = +25°C, AVDD = 1.8 V, LVDD = 1.8 V, 50% clock duty cycle, 100 MSPS, two-wire LVDS interface,

and –1-dBFS differential analog input, unless otherwise noted.

Figure 28. FFT FOR 5-MHz INPUT SIGNAL

Figure 29. FFT FOR 5-MHz INPUT SIGNAL

(Sample Rate = 100 MSPS, Decimation Filter = 4)

(Sample Rate = 100 MSPS by Averaging Four Channels)

Figure 30. FFT FOR 5-MHz INPUT SIGNAL

Figure 31. DIGITAL HIGH-PASS FILTER RESPONSE

USING CUSTOM DECIMATION-BY-8 FILTER

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