AD9255BCPZ-80 Analog Devices Inc, AD9255BCPZ-80 Datasheet - Page 20

• Manufacturer Part Number: AD9255BCPZ-80
• Description: IC ADC 14BIT 80MSPS 48LFCSP
• Manufacturer: Analog Devices Inc

Specifications of AD9255BCPZ-80

• Data Interface: Serial, SPI™
• Number Of Bits: 14
• Sampling Rate (per Second): 80M
• Number Of Converters: 1
• Power Dissipation (max): 248mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-VFQFN, CSP Exposed Pad
• Resolution (bits): 14bit
• Sampling Rate: 80MSPS
• Input Channel Type: Differential
• Supply Voltage Range - Analog: 1.7V To 1.9V
• Supply Voltage Range - Digital: 1.7V To 1.9V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD9255
Figure 37. AD9255-125 Single-Tone FFT with f
Figure 38. AD9255-125 Single-Tone FFT with f
Figure 36. AD9255-125 Single-Tone FFT with f
–100
–120
–140
–105
–120
–135
–105
–120
–135
–20
–40
–60
–80
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
0
0
0
0
+
125MSPS
70.1MHz @ –6dBFS
SNR = 72.6dB (78.6dBFS)
SFDR = 99.7dBc
125MSPS
70.1MHz @ –23dBFS
SNR = 56.4dBc (79.4dBFS)
SFDR = 75.8dBc
125MSPS
70.1MHz @ –23dBFS
SNR = 55.9dBc (78.9dBFS)
SFDR = 86.6dBc
6
6
HARMONIC
+
SECOND
10
12
12
Dither Disabled, 1M Sample
Dither Enabled, 1M Sample
2
2
18
18
20
Dither Enabled
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
24
24
5
5
HARMONIC
30
30
30
4
4
THIRD
36
36
IN
IN
IN
40
= 70.1 MHz @ −23 dBFS with
= 70.1 MHz @ −23 dBFS with
3
= 70.1 MHz @ −6 dBFS with
3
42
42
6
6
48
48
50
54
54
60
60
60
Rev. A | Page 20 of 44
Figure 39. AD9255-125 Single-Tone SNR/SFDR vs. Input Amplitude (A
Figure 40. AD9255-125 Single-Tone SNR/SFDR vs. Input Amplitude (A
Figure 41. AD9255-125 Single-Tone SNR/SFDR vs. Input Amplitude (A
120
100
120
100
120
110
100
80
60
40
20
80
60
40
20
90
80
70
–100
–100
–100
0
0
f
IN
–90
–90
–90
= 30 MHz With and Without Dither Enabled
SNR (dBFS)
SNR (dBFS)
–80
–80
–80
SFDR (dBc)
SFDR (dBc)
–70
–70
–70
INPUT AMPLITUDE (dBFS)
INPUT AMPLITUDE (dBFS)
INPUT AMPLITUDE (dBFS)
SNRFS (DITHER OFF)
f
SNRFS (DITHER ON)
IN
f
IN
–60
–60
= 98.12 MHz
–60
= 2.4 MHz
SFDRFS (DITHER OFF)
SFDR (dBFS)
SFDR (dBFS)
–50
–50
–50
SNR (dBc)
SNR (dBc)
–40
–40
–40
SFDRFS (DITHER ON)
–30
–30
–30
–20
–20
–20
–10
–10
–10
0
0
0
IN
IN
IN
) with
) with
) with