ADC3421 datasheet(21/80 Pages) TI2

21 / 80 page

Temperature (°C)

-40

-15

D823

AVDD = 1.7 V

AVDD = 1.75 V

AVDD = 1.8 V

AVDD = 1.85 V

AVDD = 1.9 V

Temperature (°C)

-40

-15

70.4

70.8

71.2

71.6

D824

AVDD = 1.7 V

AVDD = 1.75 V

AVDD = 1.8 V

AVDD = 1.85 V

AVDD = 1.9 V

Input Common-Mode Voltage (V)

0.85

0.9

0.95

1.05

1.1

100

105

D821

SNR

SFDR

Input Common-Mode Voltage (V)

0.85

0.9

0.95

1.05

1.1

D822

SNR

SFDR

Amplitude (dBFS)

-70

-60

-50

-40

-30

-20

-10

69.5

70.5

120

160

71.5

200

240

72.5

280

D819

SNR (dBFS)

SFDR (dBc)

SFDR (dBFS)

Amplitude (dBFS)

-70

-60

-50

-40

-30

-20

-10

100

150

200

250

D820

SNR (dBFS)

SFDR (dBc)

SFDR (dBFS)

ADC3421, ADC3422, ADC3423, ADC3424

www.ti.com

SBAS673A – JULY 2014 – REVISED OCTOBER 2015

Typical Characteristics: ADC3421 (continued)

Typical values are at TA = 25°C, ADC sampling rate = 25 MSPS, 50% clock duty cycle, AVDD = 1.8 V, DVDD = 1.8 V, –1-

dBFS differential input, 2-VPP full-scale, 32k-point FFT, chopper disabled, and SNR reported with a 1-MHz offset from dc

when chopper is disabled and from fS / 2 when chopper is enabled, unless otherwise noted.

Figure 19. Performance vs Input Amplitude (30 MHz)

Figure 20. Performance vs Input Amplitude (170 MHz)

Figure 21. Performance vs Input Common-Mode Voltage

Figure 22. Performance vs Input Common-Mode Voltage

(170 MHz)

(30 MHz)

Figure 23. Spurious-Free Dynamic Range vs

Figure 24. Signal-to-Noise Ratio vs

AVDD Supply and Temperature (30 MHz)

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