ADC3441 Datasheet, PDF (25/83 Pages) Texas Instruments – Analog-to-Digital Converter

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ADC3441, ADC3442, ADC3443, ADC3444
SBAS670A – JULY 2014 – REVISED OCTOBER 2015
Typical Characteristics: ADC3442 (continued)
Typical values are at T_A = 25°C, ADC sampling rate = 50 MSPS, 50% clock duty cycle, AVDD = 1.8 V, DVDD = 1.8 V, –1-
dBFS differential input, 2-V_PP full-scale, 32k-point FFT, chopper disabled, and SNR reported with a 1-MHz offset from dc
when chopper is disabled and from f_S / 2 when chopper is enabled, unless otherwise noted.
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Frequency (MHz)
D507
SFDR = 75 dBc, SNR = 70.3 dBFS, SINAD = 69.1 dBFS,
THD = 74 dBc, HD2 = -75 dBc,
HD3 = 81 dBc, SFDR = 95 dBc (non 23)
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Frequency (MHz)
D508
SFDR = 75 dBc, SNR = 70.6 dBFS, SINAD = 69.6 dBFS,
THD = 73 dBc, HD2 = 75 dBc,
HD3 = 78 dBc, SFDR = 91 dBc (non 23)
Figure 38. FFT for 270-MHz Input Signal (Dither On)
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Frequency (MHz)
D509
SFDR = 68 dBc, SNR = 68.2 dBFS, SINAD = 68 dBFS,
THD = 86 dBc, HD2 = 68 dBc, HD3 = 87 dBc
Figure 39. FFT for 270-MHz Input Signal (Dither Off)
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Frequency (MHz)
D510
SFDR = 68 dBc, SNR = 68.5 dBFS, SINAD = 68.3 dBFS,
THD = 86 dBc, HD2 = 68 dBc, HD3 = 90 dBc
Figure 40. FFT for 450-MHz Input Signal (Dither On)
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Frequency (MHz)
D511
f_IN1 = 46.3 MHz, f_IN2 = 50.3 MHz, IMD3 = 102 dBFS,
each tone at –7 dBFS
Figure 41. FFT for 450-MHz Input Signal (Dither Off)
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Frequency (MHz)
D512
f_IN1 = 46.3 MHz, f_IN2 = 50.3 MHz, IMD3 = 110 dBFS,
each tone at –36 dBFS
Figure 42. FFT for Two-Tone Input Signal
(–7 dBFS at 46 MHz and 50 MHz)
Figure 43. FFT for Two-Tone Input Signal
(–36 dBFS at 46 MHz and 50 MHz)
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