AD9231BCPZ-20 Analog Devices Inc, AD9231BCPZ-20 Datasheet - Page 14

• Manufacturer Part Number: AD9231BCPZ-20
• Description: 12 Bit, 20 MSPS Dual Low Power ADC
• Manufacturer: Analog Devices Inc

Specifications of AD9231BCPZ-20

• Number Of Bits: 12
• Sampling Rate (per Second): 20M
• Data Interface: Serial, SPI™
• Number Of Converters: 2
• Power Dissipation (max): 73.3mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LFCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD9231
AD9231-65
AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS, DCS
disabled, unless otherwise noted.
–105
–120
–135
–105
–120
–135
–105
–120
–135
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
Figure 19. AD9231-65 Single-Tone FFT with f
0
Figure 18. AD9231-65 Single-Tone FFT with f
0
0
Figure 20. AD9231-65 Single-Tone FFT with f
0
0
0
65MSPS
30.6MHz @ –1dBFS
SNR = 70.2dB (71.2dBFS)
SFDR = 94.1dBc
3
3
3
2
6
6
6
6
+
4
2
9
9
9
+
12
FREQUENCY (MHz)
12
FREQUENCY (MHz)
12
FREQUENCY (MHz)
6
3
15
15
15
4
5
18
18
65MSPS
69MHz @ –1dBFS
SNR = 69.9dB (70.9dBFS)
SFDR = 92.0dBc
18
65MSPS
9.7MHz @ –1dBFS
SNR =70.3 (71.3dBFS)
SFDR = 94.2dBc
+
2
21
21
5
21
5
24
24
24
IN
IN
6
IN
= 30.6 MHz
= 9.7 MHz
= 69 MHz
27
27
27
4
3
30
30
30
3
33
33
33
Rev. A | Page 14 of 36
Figure 21. AD9231-65 SNR/SFDR vs. Input Amplitude (AIN) with f
Figure 22. AD9231-65 SNR/SFDR vs. Input Frequency (AIN) with
120
100
100
80
60
40
20
90
80
70
60
50
40
30
20
10
0
–70
0
0
–60
SFDRFS
50
SNRFS
SFDR
–50
SNR
INPUT AMPLITUDE (dBc)
2 V p-p Full Scale
INPUT FREQUENCY (MHz)
–40
SFDR
SNR
100
–30
–20
150
–10
IN
200
= 9.7 MHz
0