AD9644 Analog Devices, AD9644 Datasheet - Page 13

• Manufacturer Part Number: AD9644
• Description: 14-Bit, 80 MSPS/155 MSPS, 1.8V Dual, Serial Output A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9644

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 155MSPS
• Analog Input Type: Diff-Bip
• Ain Range: 1.75 V p-p
• Adc Architecture: Pipelined

Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 1.8 V, DRVDD = 1.8 V, DCS enabled, 1.75 V p-p differential input, VIN = −1.0 dBFS, and 32k sample,
T
A
= 25°C, unless otherwise noted.
–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 5. AD9644-80 Single-Tone FFT with f
Figure 6. AD9644-80 Single-Tone FFT with f
Figure 7. AD9644-80 Single-Tone FFT with f
0
0
0
80MSPS
30.1MHz @ –1dBFS
SNR = 72.7dB (73.7dBFS)
SFDR = 94dBc
THIRD HARMONIC
10
10
10
SECOND HARMONIC
SECOND HARMONIC
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
THIRD HARMONIC
20
20
20
80MSPS
70.1MHz @ –1dBFS
SNR = 72.5dB (73.5dBFS)
SFDR = 94.0dBc
THIRD HARMONIC
80MSPS
10.1MHz @ –1dBFS
SNR = 73.0dB (74.0dBFS)
SFDR = 95dBc
IN
IN
IN
30
30
30
= 10.1 MHz
= 30.1 MHz
= 70.1 MHz
40
40
40
Rev. C | Page 13 of 44
–100
–120
–140
–100
–120
–140
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
Figure 10. AD9644-80 Single-Tone FFT with f
Figure 8. AD9644-80 Single-Tone FFT with f
Figure 9. AD9644-80 Single-Tone FFT with f
0
0
0
0
0
0
80MSPS
140.3MHz @ –1dBFS
SNR = 72.2dB (73.2dBFS)
SFDR = 94.0dBc
80MSPS
180.1MHz @ –1dBFS
SNR = 71.6dB (72.6dBFS)
SFDR = 93dBc
80MSPS
220.1MHz @ –1dBFS
SNR = 71.1dB (72.1dBFS)
SFDR = 92dBc
10
10
10
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
20
20
20
THIRD HARMONIC
SECOND HARMONIC
SECOND HARMONIC
IN
IN
IN
30
30
30
= 140.1 MHz
= 180.1 MHz
= 220.1 MHz
AD9644
40
40
40