IDT DAC1627D Operating and maintenance instructions
1
DAC1627D Demo boards – Quick Start
v2
2
CGAP2 board:
Storage and Generation of
complex patterns up to
32M (I,Q)- words DAC1627D board
DAC1627D demoboard+ CGAP2
Board presentation
3
DAC1627D SPI
USB control
CGAP2 USB
Power 5 Vdc
SMA100A clock generator : DAC clock
Power 5 Vdc
PXA spectrum
analyzer
DAC1627D demoboard+ CGAP2
Board connections
PXA spectrum
analyzer
DAC1627 Board overview
Block Diagram
FT2232D
USB<-> SPI
DAC1627
Iout
SPI
DAC clk
USB
con
Data0-13 DAC
6V DC in external Power Generator
Qout
DAC
CGAP2 QSH connector
SPI
LVDS clk
Divider
/2 /4 /8
splitter
global clk
Iout
Qout
One Global clock is used for both DAC board and CGAP2 board.
This Global Clock is split on two signals:
- one is feeding the DAC1627D
- one is divided and send trough the Samtec connector to the CGAP board to feed the FPGA
5
CGAP2 board:
Storage and Generation of
complex patterns up to
32M (I,Q)- words DAC1627D + BGX7100 board
DAC1627D + BGX7100 IQMod demoboard+ CGAP2
Board presentation
6
DAC1627D SPI
USB control
CGAP2 USB
Power 5 Vdc
SMB100A clock generator, DAC clock
737.28MHz, 5dBm
Power 6 Vdc
SMA100A clockgen
IQMod clock 2GHz,
0dBm
PXA spectrum
analyzer
DAC1627D + BGX7100 IQMod demoboard+ CGAP2
Board connections
DAC1627/ BGX7100 Board overview
Block Diagram
Low pass Filter
(BW=300Mhz)
FT2232D
USB<-> SPI
DAC1627
Iout RFout
SPI
DAC clk
USB
con
Data0-13 DAC
6V DC in external Power Generator
Qout
DAC
External generator
LO Synthe
clock
CGAP2 QSH connector
SPI
LVDS clk
Divider
/2 /4 /8
splitter
BGX7100
AQM
global clock
One Global clock is used for both DAC board and CGAP board.
This Global Clock is split on two signals:
- one is feeding the DAC1627D
- one is divided and send trough the Samtec connector to the CGAP board to feed the FPGA
S0/S1/S2 jumpers position
8
S0: ON
S1: ON
S2: OFF
S0/S1/S2 jumpers are used to configure the divider ratio for the clock feeding the CGAP board..
For the current software revision, the ratio value needs to be set to 2.
Please, make sure that the jumpers have the following configuration on the board:
CLOCKS generation
(Global Clock and LO)
9
Spectrum measurement
Bench overview
10
IDT DAC1627 SPI Software
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