AD9642 Analog Devices, AD9642 Datasheet - Page 14

• Manufacturer Part Number: AD9642
• Description: 14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Analog-to-Digital Converter (ADC)
• Manufacturer: Analog Devices

Specifications of AD9642

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 250MSPS
• Interface: LVDS
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: 1.75 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9642
–100
–120
–140
–140
–140
–100
–120
–100
–120
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
Figure 29. AD9642-250 Single-Tone FFT with f
Figure 30. AD9642-250 Single-Tone FFT with f
Figure 28. AD9642-250 Single-Tone FFT with f
0
0
0
0
0
0
250MSPS
90.1MHz @ –1dBFS
SNR = 71dB (72dBFS)
SFDR = 89dBc
250MSPS
185.1MHz @ –1dBFS
SNR = 70.4dB (71.4dBFS)
SFDR = 86dBc
25
25
25
THIRD HARMONIC
THIRD HARMONIC
SECOND HARMONIC
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
SECOND HARMONIC
50
50
50
250MSPS
220.1MHz @ 1.0dBFS
SNR = 69.9dB (70.9dBFS)
SFDR = 91dBc
75
75
75
THIRD HARMONIC
SECOND HARMONIC
IN
IN
IN
100
100
100
= 185.1 MHz
= 220.1 MHz
= 90.1 MHz
125
125
125
Rev. 0 | Page 14 of 28
Figure 32. AD9642-250 Single-Tone SNR/SFDR vs. Input Amplitude (A
Figure 33. AD9642-250 Single-Tone SNR/SFDR vs. Input Frequency (f
–140
–100
–120
–20
–40
–60
–80
120
100
100
Figure 31. AD9642-250 Single-Tone FFT with f
95
90
85
80
75
70
65
60
80
60
40
20
0
–100
0
0
–90
–80
with f
25
SFDR (dBc)
IN
–70
INPUT AMPLITUDE (dBFS)
= 90.1 MHz, f
FREQUENCY (MHz)
SFDR (dBFS)
FREQUENCY (MHz)
f
SNR (dBFS)
S
–60
50
= 250 MSPS
SFDR (dBFS)
SNR (dBc)
–50
THIRD HARMONIC
S
= 250 MSPS
250MSPS
305.1MHz @ –1dBFS
SNR = 68.5dB (69.5dBFS)
SFDR = 82dBc
–40
75
SNR (dBc)
SECOND HARMONIC
–30
IN
100
= 305.1 MHz
–20
–10
125
0
IN
IN
),
)