AD9255 Analog Devices, AD9255 Datasheet - Page 16

• Manufacturer Part Number: AD9255
• Description: 14-Bit, 125 MSPS/105 MSPS/80 MSPS, 1.8 V Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9255

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

AD9255
Figure 12. AD9255-80 Single-Tone SNR/SFDR vs. Input Amplitude (A
Figure 14. AD9255-80 Single-Tone SNR/SFDR vs. Sample Rate (f
100
105
100
120
110
100
Input Frequency (f
95
90
85
80
75
70
65
95
90
85
80
75
90
80
70
–100
0
25
SNR @ –40°C
SFDR @ +85°C
Figure 13. AD9255-80 Single-Tone SNR/SFDR vs.
f
30
–90
IN
SNR @ +25°C
= 30 MHz with and without Dither Enabled
50
35
–80
IN
40
–70
) and Temperature with 2 V p-p Full Scale
INPUT FREQUENCY (MHz)
INPUT AMPLITUDE (dBFS)
SFDR @ –40°C
100
with f
SAMPLE RATE (MSPS)
SNRFS (DITHER OFF)
SNRFS (DITHER ON)
SNR @ +85°C
45
–60
IN
SFDRFS (DITHER OFF)
= 70.1 MHz
50
150
–50
55
SFDR @ +25°C
–40
SFDR
SNR
SFDRFS (DITHER ON)
60
200
–30
65
–20
250
70
–10
75
300
80
0
IN
S
) with
)
Rev. A | Page 16 of 44
–0.25
–0.50
–0.2
–0.4
–0.6
–0.8
–1.0
0.50
0.25
1.6M
1.4M
1.2M
1.0M
800k
600k
400k
200k
1.0
0.8
0.6
0.4
0.2
0
0
0
0
0
Figure 15. AD9255-80 Grounded Input Histogram
N – 3
Figure 17. AD9255-80 DNL with f
2000
2000
Figure 16. AD9255-80 INL with f
INL WITHOUT DITHER
INL WITH DITHER
N – 2
4000
4000
6000
6000
N – 1
OUTPUT CODE
OUTPUT CODE
OUTPUT CODE
8000
8000
N
10,000
10,000
N + 1
IN
IN
= 12.5 MHz
12,000
12,000
= 12.5 MHz
N + 2
0.62 LSB RMS
14,000
14,000
N + 3
16,000
16,000