ADC3421 datasheet(20/80 Pages) TI2

20 / 80 page

Frequency (MHz)

100

150

200

250

300

350

400

D801

D817

Dither_EN

Dither_DIS

Frequency (MHz)

100

150

200

250

300

350

400

100

D818

Dither_EN

Dither_DIS

Each Tone Amplitude (dBFS)

-35

-31

-27

-23

-19

-15

-11

-7

-110

-105

-100

-95

-90

-85

D815

Each Tone Amplitude (dBFS)

-35

-31

-27

-23

-19

-15

-11

-7

-105

-100

-95

-90

-85

D816

Frequency (MHz)

2.5

7.5

12.5

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

D813

Frequency (MHz)

2.5

7.5

12.5

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

D814

ADC3421, ADC3422, ADC3423, ADC3424

SBAS673A – JULY 2014 – REVISED OCTOBER 2015

www.ti.com

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.

fIN1 = 184.5 MHz, fIN2 = 189.5 MHz, IMD3 = 91,

fIN1 = 184.5 MHz, fIN2 = 189.5 MHz, IMD3 = 98 dBFS,

each tone at = –7 dBFS

each tone at –36 dBFS

Figure 13. FFT for Two-Tone Input Signal

Figure 14. FFT for Two-Tone Input Signal

(–7 dBFS at 185 MHz and 190 MHz)

(–36 dBFS at 185 MHz and 190 MHz)

Figure 15. Intermodulation Distortion vs Input Amplitude

Figure 16. Intermodulation Distortion vs Input Amplitude

(46 MHz and 50 MHz)

(185 MHz and 190 MHz)

Figure 17. Signal-to-Noise Ratio vs Input Frequency

Figure 18. Spurious-Free Dynamic Range vs

Input Frequency

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Product Folder Links: ADC3421 ADC3422 ADC3423 ADC3424

ADC3421 Datasheet(PDF) 20 Page - Texas Instruments

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