AD9649BCPZ-20 Analog Devices Inc, AD9649BCPZ-20 Datasheet - Page 13

• 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
AD9649-65
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, 50% duty cycle
clock, unless otherwise noted.
–105
–120
–105
–120
–105
–120
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
Figure 17. AD9649-65 Single-Tone FFT with f
Figure 18. AD9649-65 Single-Tone FFT with f
Figure 16. AD9649-65 Single-Tone FFT with f
0
0
0
65MSPS
30.5MHz @ –1dBFS
SNR = 73.3dB (74.3dBFS)
SFDR = 99.3dBc
3
3
3
2
6
6
6
6
4
9
9
9
2
FREQUENCY (MHz)
FREQUENCY (MHz)
12
FREQUENCY (MHz)
12
12
6
15
15
15
3
5
18
18
18
65MSPS
70.3MHz @ –1dBFS
SNR = 72.6dB (73.6dBFS)
SFDR = 94.1dBc
65MSPS
9.7MHz @ –1dBFS
SNR = 73.5dB (74.5dBFS)
SFDR = 97.7dBc
2
21
21
21
4
5
24
24
24
IN
IN
IN
= 70.3 MHz
= 30.5 MHz
= 9.7 MHz
5
27
4
3
27
27
3
30
30
30
6
Rev. 0 | Page 13 of 32
Figure 19.AD9649-65 SNR/SFDR vs. Input Amplitude (AIN) with f
120
100
100
80
60
40
20
90
80
70
60
50
40
30
20
10
0
0
Figure 20. AD9649-65 SNR/SFDR vs. Input Frequency (AIN)
–90
0
–80
SNRFS
50
with 2 V p-p Full Scale
INPUT AMPLITUDE (dBFS)
INPUT FREQUENCY (MHz)
–60
SFDR
SNR (dBFS)
SFDRFS
100
–40
SFDR (dBc)
SNR
150
–20
IN
= 9.7 MHz
200
0