AD9444 Analog Devices, AD9444 Datasheet - Page 14

• Manufacturer Part Number: AD9444
• Description: 14-Bit, 80 MSPS A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9444

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,1 V p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: QFP

AD9444
EQUIVALENT CIRCUITS
VIN+
VIN–
Figure 8. Equivalent LVDS Digital Output Circuit
LVDSBIAS
Figure 6. Equivalent Analog Input Circuit
Figure 7. Equivalent LVDS BIAS Circuit
AVDD2
1.2V
DX–
V
V
3.5V
2.5pF
3.74k Ω
2.5pF
X1
AVDD2
AVDD2
DRVDD
1k Ω
1k Ω
DRVDD
I
DX+
LVDSOUT
DRVDD
V
V
SHA
K
Rev. 0 | Page 14 of 40
CLK+
OUTPUT MODE,
10k Ω
DCS MODE,
Figure 9. Equivalent CMOS Digital Output Circuit
Figure 11. Equivalent Sample Clock Input Circuit
Figure 10. Equivalent Digital Input Circuit,
12k Ω
150 Ω
DFS
DFS, DCS MODE, OUTPUT MODE
AVDD2
30k Ω
DRVDD
DX
12k Ω
150 Ω
10k Ω
VDD
CLK–