AD9239 Analog Devices, AD9239 Datasheet - Page 15

• Manufacturer Part Number: AD9239
• Description: Quad, 12-Bit, 170 MSPS/210 MSPS/250 MSPS Serial Output 1.8 V ADC
• Manufacturer: Analog Devices

Specifications of AD9239

• Resolution (bits): 12bit
• # Chan: 4
• Sample Rate: 250MSPS
• Interface: Ser
• Analog Input Type: Diff-Uni,SE-Uni
• Ain Range: 1.25 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

40000
35000
30000
25000
20000
15000
10000
40000
35000
30000
25000
20000
15000
10000
–0.1
–0.2
–0.3
–0.4
–0.5
5000
Figure 29. Input-Referred Noise Histogram, f
5000
Figure 30. Input-Referred Noise Histogram, f
0.5
0.4
0.3
0.2
0.1
0
0
0
0
N – 3
N – 3
Figure 28. DNL, f
500
N – 2
N – 2
1000
N – 1
N – 1
1500
IN
= 9.7 MHz, f
INPUT REFERRED NOISE: 0.72 LSB
INPUT REFERRED NOISE: 0.70 LSB
N
N
2000
CODE
BIN
BIN
N + 1
N + 1
2500
SAMPLE
N + 2
N + 2
= 250 MSPS
3000
SAMPLE
SAMPLE
N + 3 MORE
N + 3 MORE
= 170 MSPS
= 210 MSPS
3500
4000
Rev. B | Page 15 of 40
40000
35000
30000
25000
20000
15000
10000
Figure 33. SNR/SFDR vs. Analog Input Common-Mode Voltage,
5000
–100
–120
–140
Figure 31. Input-Referred Noise Histogram, f
–20
–40
–60
–80
90
85
80
75
70
65
60
55
50
45
40
1.0
0
0
Figure 32. Noise Power Ratio (NPR), f
0
N – 3
1.1
ANALOG INPUT COMMON-MODE VOLTAGE (V)
20
N – 2
f
IN
1.2
= 84.3 MHz, f
N – 1
40
1.3
FREQUENCY (Hz)
SFDR (dBc)
SNR (dB)
INPUT REFERRED NOISE: 0.71 LSB
N
SAMPLE
1.4
60
BIN
N + 1
= 250 MSPS
1.5
NPR = 52dB
NOTCH = 18.9MHz
NOTCH WIDTH = 1MHz
80
SAMPLE
N + 2
SAMPLE
1.6
= 250 MSPS
100
N + 3 MORE
= 250 MSPS
1.7
AD9239
120
1.8