AD9643 Analog Devices, AD9643 Datasheet - Page 30

• Manufacturer Part Number: AD9643
• Description: 14-Bit, 170/210/250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
• Manufacturer: Analog Devices

Specifications of AD9643

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 250MSPS
• Interface: LVDS,Par
• Analog Input Type: Diff-Bip
• Ain Range: 1.75 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9643
SPI ACCESSIBLE FEATURES
Table 13 provides a brief description of the general features that
are accessible via the SPI. These features are described in detail
in the
via SPI. The AD9643 part-specific features are described in the
Memory Map Register Description section.
Table 13. Features Accessible Using the SPI
Feature Name
Mode
Clock
Offset
Test I/O
Output Mode
Output Phase
Output Delay
VREF
SCLK
SDIO
CSB
DON’T CARE
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AN-877 Application
t
S
R/W
t
DS
Note, Interfacing to High Speed ADCs
W1
Allows the user to set either power-down mode or standby mode
Allows the user to digitally adjust the converter offset
Allows the user to set test modes to have known data on output bits
Allows the user to set up outputs
Allows the user to set the output clock polarity
Allows the user to vary the DCO delay
Allows the user to set the reference voltage
Description
Allows the user to access the DCS via the SPI
W0
t
DH
A12
t
HIGH
A11
t
Figure 58. Serial Port Interface Timing Diagram
LOW
A10
A9
Rev. B | Page 30 of 36
t
CLK
A8
A7
D5
D4
D3
D2
D1
D0
Data Sheet
t
H
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