GPIOX Cards & Test Boards
ADCXA 2 Gsample/s A/D Converter
The ADCXA is a GPIOX card with two coherent A/D converter channels and precision 2 GHz clock source. The 10 bit A/D outputs connect to the User Logic chips on the MAP® via a matching 4 way Demux chip. The channels can be used either independently or in a coherent fashion such as for the capture of Angle of Arrival information. Inputs to the card are differential but can be used in single ended mode by adding a 50 ohm terminator to one of the differential input legs. The ADCXA card can be used with all SRC products that support GPIOX.
|
Parameter |
Value |
|
A/D Converter |
Atmel AT84AS008* |
|
Demux |
Atmel AT84CS001* |
|
Sample Rate |
2 Gsamples/second |
|
Number of A/D Output Bits |
10 |
|
Number of Demux Output Bits |
40 |
|
Number of A/D Channels |
1 or 2 |
|
Differential Input Impedance |
100 W Internally Terminated |
|
Single Ended Input Impedance |
50 W Internally Terminated |
|
Input Connectors |
MCX Female** |
|
Maximum Input Amplitude |
750 mv P-P |
|
Maximum Input Level |
+-375 mv |
|
Full Scale Input Amplitude |
500 mv P-P |
|
Clock Frequency |
2 GHz |
|
Clock Frequency Stability |
+- 100 ppm Maximum |
|
Clock Phase Noise |
|
|
10 KHz |
-120 dBc/Hz |
|
20 KHz |
-125 dBc/Hz |
|
10 MHz |
-130 dBc/Hz |
|
100 MHz |
-145 dBc/Hz |
|
Clock Output Type |
Dual Differential |
|
Phase Difference |
180 +-15 Degrees |
More Information
IOX Card
SRC’s IOX card is a GPIOX card that connects all of the GPIOX signals to two connectors. The GPIOX "A" signals are routed to connector J102, and the GPIOX "B" signals are routed to connector J103. Three voltages (+5V, -5V and +12V) are routed to the connectors J102 and J103.
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2 Samtec 120 pin connectors (QTH-060-01-L-D-LC) (J102 and J103)
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48 data pairs per connector (positive and negative) or;
96 single-ended data per connector (J102 and J103) -
1 clock pair per connector (positive and negative) or;
2 single-ended clocks per connector (J102 and J103) -
+5V, -5V & +12V per connector (J102 and J103)
More Information
GPIOX Test Board
SRC’s GPIOX Test Board plugs into the GPIOX connector and provides connectors for logic analyzers, scopes and signal generators. This allows the engineer to both monitor signals from and inject signals into the USER logic. There are also two pushbutton switches and eight DIP switches to provide input into the USER logic, and five LED indicator lights that are controlled by the USER logic. Finally there is a 4 Mbit Flash PROM that can be programmed with a JTAG download cable. The data stored in the PROM can then be read by the USER logic.
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80 single ended data signals or;
40 data pairs (positive and negative) -
10 single ended clocks or;
5 clock pairs (positive and negative) -
10 8x2 data headers (.025" square, .100" spacing)
-
5 2x1 clock headers (.025" square, .100" spacing)
-
2 pushbutton switch inputs
-
8 DIP switch inputs
-
5 LED indicator lights
-
1 4Mbit flash PROM
- 1 JTAG connector (Samtec IPL1-103-02-F-D)