AD9255 Analog Devices, AD9255 Datasheet - Page 22

• 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 48. AD9255-125 Single-Tone SNR/SFDR vs. Sample Rate (f
1.4M
1.2M
1.0M
800k
600k
400k
200k
–0.2
–0.4
–0.6
–0.8
–1.0
105
100
1.0
0.8
0.6
0.4
0.2
95
90
85
80
75
0
0
25
0
Figure 49. AD9255-125 Grounded Input Histogram
N – 3
Figure 50. AD9255-125 INL with f
35
2000
INL WITHOUT DITHER
INL WITH DITHER
45
N – 2
4000
55
with f
SAMPLE RATE (MSPS)
N – 1
6000
65
OUTPUT CODE
OUTPUT CODE
IN
SFDR
SNR
= 70.1 MHz
8000
75
N
10,000
85
N + 1
IN
= 12.5 MHz
95
12,000
N + 2
0.63 LSB RMS
105
14,000
115
N + 3
16,000
125
S
)
Rev. A | Page 22 of 44
–0.25
–0.50
0.50
0.25
100
Figure 52. AD9255-125 SNR/SFDR vs. Input Common Mode (VCM)
90
80
70
60
50
40
0.75
0
0
Figure 51. AD9255-125 DNL with f
0.80
2000
0.85
INPUT COMMON-MODE VOLTAGE (V)
4000
0.90
with f
6000
OUTPUT CODE
SFDR (dBFS)
SFDR (dBc)
0.95
IN
= 30 MHz
8000
1.00
10,000
1.05
IN
12,000
= 12.5 MHz
1.10
14,000
1.15
16,000
1.20