ADS4449 datasheet(13/54 Pages) TI

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−120

−100

−80

−60

−40

−20

100

125

Frequency (MHz)

FIN = 100 MHz

SFDR = 85 dBc

SNR = 70.2 dBFS

SINAD = 70.1 dBFS

THD = 84 dBc

G003

−120

−100

−80

−60

−40

−20

100

125

Frequency (MHz)

FIN = 140 MHz

SFDR = 87 dBc

SNR = 69.7 dBFS

SINAD = 69.6 dBFS

THD = 84 dBc

G004

−120

−100

−80

−60

−40

−20

100

125

Frequency (MHz)

FIN = 40 MHz

SFDR = 84 dBc

SNR = 71.1 dBFS

SINAD = 70.9 dBFS

THD = 84 dBc

G001

−120

−100

−80

−60

−40

−20

100

125

Frequency (MHz)

FIN = 70 MHz

SFDR = 87 dBc

SNR = 70.9 dBFS

SINAD = 70.8 dBFS

THD = 84 dBc

G002

ADS4449

www.ti.com

SBAS603 – APRIL 2013

TYPICAL CHARACTERISTICS

At +25°C, AVDD = 1.9 V, AVDD3V = 3.3 V, DRVDD = 1.8 V, rated sampling frequency, 0-dB gain, sine-wave input clock,

1.5-VPP differential clock amplitude, 50% clock duty cycle, –1-dBFS differential analog input, DDR LVDS output interface, and

32k-point FFT, unless otherwise noted.

Figure 6. FFT FOR 40-MHz INPUT SIGNAL

Figure 7. FFT FOR 70-MHz INPUT SIGNAL

Figure 8. FFT FOR 100-MHz INPUT SIGNAL

Figure 9. FFT FOR 140-MHz INPUT SIGNAL

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