ADC3421 datasheet(31/80 Pages) TI2

31 / 80 page

Temperature (°C)

-40

-15

D423

AVDD = 1.7 V

AVDD = 1.75 V

AVDD = 1.8 V

AVDD = 1.85 V

AVDD = 1.9 V

Temperature (°C)

-40

-15

70.2

70.4

70.6

70.8

D424

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

D421

SNR

SFDR

Input Common-Mode Voltage (V)

0.85

0.9

0.95

1.05

1.1

D422

SNR

SFDR

Amplitude (dBFS)

-70

-60

-50

-40

-30

-20

-10

69.5

70.5

120

160

71.5

200

240

D419

SNR (dBFS)

SFDR (dBc)

SFDR (dBFS)

Amplitude (dBFS)

-70

-60

-50

-40

-30

-20

-10

68.5

69.5

100

70.5

120

140

71.5

160

180

D421

D420

SNR (dBFS)

SFDR (dBc)

SFDR (dBFS)

ADC3421, ADC3422, ADC3423, ADC3424

www.ti.com

SBAS673A – JULY 2014 – REVISED OCTOBER 2015

Typical Characteristics: ADC3423 (continued)

Typical values are at TA = 25°C, ADC sampling rate = 80 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 79. Performance vs Input Amplitude (30 MHz)

Figure 80. Performance vs Input Amplitude (170 MHz)

Figure 81. Performance vs Input Common-Mode Voltage

Figure 82. Performance vs Input Common-Mode Voltage

(170 MHz)

(30 MHz)

Figure 83. Spurious-Free Dynamic Range vs

Figure 84. Signal-to-Noise Ratio vs

AVDD Supply and Temperature (170 MHz)

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ADC3421 Datasheet(PDF) 31 Page - Texas Instruments

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