AD6643-250EBZ Analog Devices, AD6643-250EBZ Datasheet - Page 17

• Manufacturer Part Number: AD6643-250EBZ
• Description: Data Conversion IC Development Tools 11 Bit Dual IF Diversity 3G Receiver
• Manufacturer: Analog Devices
• Type: ADCr
• Series: AD6643r

Specifications of AD6643-250EBZ

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: AD6643-250
• Interface Type: SPI, USB
• Operating Supply Voltage: 6 V
• Description/function: 250 MSPs per channel dual IF receiver
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Current: 2 A
• Factory Pack Quantity: 1
• For Use With: HSC-ADC-EVALCZ

Data Sheet
Figure 18. AD6643-200 Single Tone SNR/SFDR vs. Sample Rate (f
12,000
10,000
–100
–120
–140
100
–20
–40
–60
–80
95
90
85
80
75
70
65
60
8000
6000
4000
2000
0
40
0
0
Figure 20. AD6643-250 Single Tone FFT, f
Figure 19. AD6643-200 Grounded Input Histogram
50
10
60
20
70
80
30
SECOND HARMONIC
90
with f
40
SAMPLE RATE (MSPS)
100
FREQUENCY (MHz)
50
110
IN
OUTPUT CODE
= 90.1 MHz
120
60
N
130 140 150 160
70
N + 1
250MSPS
30.1MHz @ –1.0dBFS
SNR = 65.4dB (66.4dBFS)
SFDR = 88dBc
SNR, CHANNEL B
SFDR, CHANNEL B
SNR, CHANNEL A
SFDR, CHANNEL A
80
0.614LSB rms
16,384 TOTAL HITS
THIRD HARMONIC
90
IN
= 30.1 MHz
170 180 190 200
100
110
120
S
)
Rev. C | Page 17 of 40
–100
–120
–140
–100
–120
–140
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
0
0
0
Figure 22. AD6643-250 Single Tone FFT, f
Figure 23. AD6643-250 Single Tone FFT, f
0
0
0
Figure 21. AD6643-250 Single Tone FFT, f
250MSPS
90.1MHz @ –1.0dBFS
SNR = 65.2dB (66.2dBFS)
SFDR = 88dBc
250MSPS
140.1MHz @ –1.0dBFS
SNR = 65.1dB (66.1dBFS)
SFDR = 87dBc
250MSPS
185.1MHz @ –1.0dBFS
SNR = 64.9dB (65.9dBFS)
SFDR = 85dBc
THIRD HARMONIC
SECOND HARMONIC
10
10
10
SECOND HARMONIC
20
20
20
30
30
30
40
40
40
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
SECOND HARMONIC
50
50
50
60
60
60
THIRD HARMONIC
70
70
70
80
80
80
THIRD HARMONIC
IN
IN
90
90
90
IN
= 140.1 MHz
= 185.1 MHz
= 90.1 MHz
100
100
100
110
110
110
AD6643
120
120
120