AD7626 Analog Devices, AD7626 Datasheet - Page 10

• Manufacturer Part Number: AD7626
• Description: 16-Bit, 10 MSPS, PulSAR Differential ADC
• Manufacturer: Analog Devices

Specifications of AD7626

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 10MSPS
• Interface: LVDS,Ser
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP

AD7626
TYPICAL PERFORMANCE CHARACTERISTICS
VDD1 = 5 V; VDD2 = 2.5 V; VIO = 2.5 V; REF = 4.096 V; all plots at 10 MSPS unless otherwise noted. FFT plots for 2 MHz, 3 MHz, and
5 MHz input tones use band pass filter (±400 kHz pass bandwidth around fundamental frequency).
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0
0
0
0
0
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Figure 6. FFT, 2 MHz, −0.5 dB Input Tone, Wide View
Figure 7. FFT, 3 MHz, −0.5 dB Input Tone, Wide View
INPUT FREQUENCY = 3.00125MHz
–0.5dB INPUT AMPLITUDE
SNR = 87.1dBFS
SINAD = 81.2dBFS
THD = –82.0dB
SFDR = 82.1dB
64k SAMPLES
Figure 5. 10 kHz, −0.5 dB Input Tone, Zoomed View
HARMONIC
HARMONIC
FIFTH
THIRD
0.5
0.5
10
1.0
1.0
1.5
1.5
30
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (kHz)
2.0
2.0
HARMONIC
FOURTH
2.5
2.5
50
INPUT FREQUENCY = 10.37kHz
SNR = 91.85dB
SINAD = 91.8dB
THD = –112.1dB
SFDR = 112.85dB
32k SAMPLES
INPUT FREQUENCY = 2.0026MHz
–0.5dB INPUT AMPLITUDE
SNR = 87.4dBFS
SINAD = 84.8dBFS
THD = –87.9dB
SFDR = 88.1dB
64k SAMPLES
3.0
3.0
HARMONIC
HARMONIC
SECOND
THIRD
3.5
3.5
70
4.0
4.0
HARMONIC
HARMONIC
SECOND
FIFTH
4.5
4.5
90
5.0
5.0
Rev. A | Page 10 of
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Figure 8.100 kHz, −0.5 dB Input Tone FFT, Full Frequency View
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0
0
0
0
0
0
INPUT FREQUENCY = 3.00125MHz
–6dB INPUT AMPLITUDE
SNR = 88.48dBFS
SINAD = 88.3dBFS
THD = –97.2dB
SFDR = 98.3dB
64k SAMPLES
HARMONIC
Figure 10. FFT, 3 MHz, −6 dB Input Tone, Wide View
Figure 9. FFT, 2 MHz, −6 dB Input Tone, Wide View
FIFTH
0.5
0.5
0.5
1.0
1.0
1.0
HARMONIC
THIRD
1.5
1.5
1.5
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
2.0
2.0
2.0
HARMONIC
FOURTH
2.5
2.5
2.5
INPUT FREQUENCY = 100kHz
SNR = 91.323dB
SINAD = 91.047dB
THD = –102.543dB
SFDR = 104.529dB
INPUT FREQUENCY = 2.0026MHz
–6dB INPUT AMPLITUDE
SNR = 87.6dBFS
SINAD = 87.6dBFS
THD = –101.6dB
SFDR = 101.9dB
64k SAMPLES
3.0
3.0
3.0
HARMONIC
HARMONIC
SECOND
THIRD
3.5
3.5
3.5
4.0
4.0
4.0
HARMONIC
HARMONIC
SECOND
FIFTH
4.5
4.5
4.5
5.0
5.0
5
.0