AD9231BCPZ-20 Analog Devices Inc, AD9231BCPZ-20 Datasheet - Page 16

• 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
AD9231-20
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
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
Figure 27. AD9231-20 Single-Tone FFT with f
0
Figure 26. AD9231-20 Single-Tone FFT with f
0
0
0
20MSPS
9.7MHz @ –1dBFS
SNR = 70.3dB (71.3dBFS)
SFDR = 94.1dBc
20MSPS
30.6MHz @ –1dBFS
SNR = 70.2dB (71.2dBFS)
SFDR = 94.6dBc
0.95
0.95
2
2
4
+
1.90 2.85 3.80 4.75 5.70 6.65 7.60 8.55 9.50
1.90 2.85 3.80 4.75 5.70 6.65 7.60 8.55 9.50
6
4
FREQUENCY (MHz)
FREQUENCY (MHz)
6
+
5
IN
IN
= 30.6 MHz
= 9.7 MHz
3
5
3
Rev. A | Page 16 of 36
Figure 28. AD9231-20 SNR/SFDR vs. Input Amplitude (AIN) with f
120
100
80
60
40
20
0
–70
–60
–50
SFDRFS
SNRFS
INPUT AMPLITUDE (dBc)
SFDR
SNR
–40
–30
–20
–10
IN
= 9.7 MHz
0