AD9258 Analog Devices, AD9258 Datasheet - Page 18

• Manufacturer Part Number: AD9258
• Description: 14-Bit, 125 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
• Manufacturer: Analog Devices

Specifications of AD9258

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 125MSPS
• Interface: Par
• Analog Input Type: Diff-Bip
• Ain Range: (2Vref) p-p,1 V p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9258
Figure 14. AD9258-80 Single-Tone SNR/SFDR vs. Input Amplitude (A
Figure 15. AD9258-80 Single-Tone SNR/SFDR vs. Input Frequency (f
Figure 16. AD9258-80 Single-Tone SNR/SFDR vs. Sample Rate (f
100
105
100
120
110
100
95
90
85
80
75
70
65
95
90
85
80
75
90
80
70
–100 –90
0
25
with f
30
SNRFS (DITHER ON)
SNRFS (DITHER OFF)
SFDRFS (DITHER ON)
SFDRFS (DITHER OFF)
IN
50
= 30 MHz with and without Dither Enabled
35
–80
40
–70
with 2 V p-p Full Scale
INPUT FREQUENCY (MHz)
INPUT AMPLITUDE (dBFS)
100
with f
SAMPLE RATE (MSPS)
45
–60
IN
= 70.1 MHz
50
150
–50
55
–40
60
200
SNR, CHANNEL B
SFDR, CHANNEL B
SNR, CHANNEL A
SFDR, CHANNEL A
–30
65
SNR @ –40°C
SFDR @ –40°C
SNR @ +25°C
SFDR @ +25°C
SNR @ +85°C
SFDR @ +85°C
–20
250
70
–10
75
300
80
0
S
)
IN
IN
)
Rev. A | Page 18 of 44
)
800,000
700,000
600,000
500,000
400,000
300,000
200,000
100,000
–0.25
–0.50
0.50
0.25
–1
–2
2
1
0
0
0
0
0
Figure 17. AD9258-80 Grounded Input Histogram
N – 3
2000
Figure 19. AD9258-80 DNL with f
Figure 18. AD9258-80 INL with f
2000
4000
N – 2
4000
6000
6000
N – 1
OUTPUT CODE
OUTPUT CODE
OUTPUT CODE
8000
8000
N
10,000 12,000 14,000 16,000
10,000 12,000 14,000 16,000
DITHER ENABLED
DITHER DISABLED
N + 1
IN
IN
= 9.7 MHz
= 9.7 MHz
N + 2
N + 3