General Description - 4DSP FMC204 User Manual

UM008 FMC204 User Manual

2 General description

The FMC204 is a quad-channel D/A FMC. The FMC204 provides four 16-bit D\A channels
that enable simultaneous sampling at a maximum rate of 1 Gsps. The sample clock can be
supplied externally through a coax connection or by an internal clock source (optionally
locked to an external reference). A trigger input for customized sampling control is also
available.
The FMC204 daughter card is mechanically and electrically compliant to the FMC standard
(ANSI/VITA 57.1). The card has a high-pin count (HPC) connector, front panel I/O, and can
be used in a conduction-cooled or conventional air-cooled environment.
The FMC204 allows flexible control of clock source, sampling frequency, and calibration
through a SPI communication bus. The FMC204 card is equipped with power supply and
temperature monitoring with several power-down modes to switch off unused functions to
reduce system level power and heat. The FMC204 is well-suited for software defined radio
(SDR), battery, or other low power source applications. It is ideal for airborne applications
where power demand affects mission range and on-station mission time.
Clock /
Reference
Trigger /
Sync
DAC A
DAC B
DAC C
DAC D
UM008
MGT [4]
LVTTL [4]
Clock / Sync
Tree
D/A: DAC5682Z
16-bit @ 1 Gsps
D/A: DAC5682Z
16-bit @ 1 Gsps
Figure 1: FMC204 block diagram
www.4dsp.com
Board
EEPROM
Monitoring
2
I C
Board
2.5V / Vadj level single
Control
ended [4]
Status & Control
LVDS Clock [1]
LVDS Trigger [1]
LVDS Clock [1]
LVDS Data [16]
x
1
/
x
2
LVDS Sync [1]
1:2
x
1
/
x
2
LVDS Clock [1]
LVDS Data [16]
r1.14
Tx [5]
Rx [5]
Tx [5]
Rx [5]
- 5 -