AD9248 Analog Devices, AD9248 Datasheet - Page 12

• Manufacturer Part Number: AD9248
• Description: Dual 14-Bit, 20/40/65 MSPS, 3 V Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9248

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 65MSPS
• Interface: Par
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: 1 V p-p,2 V p-p,Uni 1.0V,Uni 2.0V
• Adc Architecture: Pipelined
• Pkg Type: QFP

AD9248
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD, DRVDD = 3.0 V, T = 25°C, A
–100
–120
–20
–40
–60
–80
–100
–100
–120
–120
–20
–40
–60
–80
–20
–40
–60
–80
0
Figure 5. Single-Tone FFT of Channel A Digitizing f
Figure 7. Single-Tone FFT of Channel A Digitizing f
Figure 6. Single-Tone FFT of Channel A Digitizing f
0
0
0
0
0
CROSSTALK
While Channel B Is Digitizing f
5
CROSSTALK
While Channel B Is Digitizing f
While Channel B Is Digitizing f
5
5
10
10
HARMONIC
10
SECOND
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
15
15
15
HARMONIC
CROSSTALK
SECOND
THIRD HARMONIC
SECOND HARMONIC
20
20
20
IN
IN
differential drive, full scale = 2 V, unless otherwise noted.
IN
IN
= 126 MHz
= 10 MHz
= 76 MHz
SNR = 70.5dB
SINAD = 69.4dB
H2 = –92.3dBc
H3 = –80.1dBc
SFDR = 80.1dBc
SNR = 72.6dB
SINAD = 71.9dB
H2 = –81.5dBc
H3 = –86.8dBc
SFDR = 81.5dB
SNR = 68.1dB
SINAD = 68.0dB
H2 = –83.4dBc
H3 = –83.1dBc
SFDR = 75.1dBc
25
25
25
HARMONIC
IN
IN
THIRD
IN
= 12.5 MHz
= 120 MHz
= 70 MHz
30
30
30
Rev. B | Page 12 of 48
Figure 8. AD9248-65 Single-Tone SFDR/SNR vs. FS with f
Figure 10. AD9248-20 Single-Tone SFDR/SNR vs. FS with f
Figure 9. AD9248-40 Single-Tone SFDR/SNR vs. FS with f
100
100
100
95
90
85
80
75
70
65
60
55
50
50
50
95
90
85
80
75
70
65
60
55
95
90
85
80
75
70
65
60
55
20
40
0
45
25
5
ADC SAMPLE RATE (MSPS)
ADC SAMPLE RATE (MSPS)
ADC SAMPLE RATE (MSPS)
SNR
50
SNR
30
10
55
SNR
SFDR
SFDR
35
15
SFDR
60
IN
IN
SNR
IN
= 32.5 MHz
= 20 MHz
= 10 MHz
40
20
65