AD9649BCPZ-20 Analog Devices Inc, AD9649BCPZ-20 Datasheet - Page 15

• Manufacturer Part Number: AD9649BCPZ-20
• Description: IC ADC 14BIT 20MSPS 32LFCSP
• Manufacturer: Analog Devices Inc

Specifications of AD9649BCPZ-20

• Data Interface: Serial, SPI™
• Number Of Bits: 14
• Sampling Rate (per Second): 20M
• Number Of Converters: 1
• Power Dissipation (max): 51.8mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-VFQFN, CSP Exposed Pad
• Resolution (bits): 14bit
• Sampling Rate: 20MSPS
• Input Channel Type: Differential
• Supply Voltage Range - Analog: 1.7V To 1.9V
• Supply Voltage Range - Digital: 1.7V To 3.6V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD9649-20
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, 50% duty cycle
clock, unless otherwise noted.
–105
–120
–105
–120
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
Figure 25. AD9649-20 Single-Tone FFT with f
Figure 24. AD9649-20 Single-Tone FFT with f
0
0
20MSPS
9.7MHz @ –1dBFS
SNR = 73.5dBFS (74.5dBFS)
SFDR = 97.2dBc
20MSPS
30.5MHz @ –1dBFS
SNR = 73.2dB (74.2dBFS)
SFDR = 98.1dBc
2
950k
950k
2
4
1.90
1.90
6
4
2.85 3.80 4.75 5.70 6.65 7.60 8.55 9.50
2.85 3.80 4.75 5.70 6.65 7.60 8.55 9.50
6
FREQUENCY (MHz)
FREQUENCY (MHz)
IN
IN
5
= 30.5 MHz
= 9.7 MHz
3
5
3
Rev. 0 | Page 15 of 32
Figure 26. AD9649-20 SNR/SFDR vs. Input Amplitude (AIN) with f
120
100
80
60
40
20
–100
0
–90
–80
SFDR (dBc)
–70
INPUT AMPLITUDE (dBFS)
–60
SFDR (dBFS)
SNR (dBFS)
–50
–40
SNR (dBc)
–30
–20
–10
AD9649
IN
= 9.7 MHz
0