SU751
SU751 can accomodate 5 small sub-modules (here numbered from 1 to 5), each connected thorugh 3 I/Os to the SU751 connector and so to the FPGA.
Pin table (direction shown for the SU board!)
power in +5V 2 1 +5V in power LVTTL in OUTP<5> 4 3 INP<5> out LVTTL LVTTL in OE_n<5> 6 5 INJ<5> GND in GND 8 7 LED_n<5> in LVTTL LVTTL in OUTP<4> 10 9 INTTL<4> out LVTTL LVTTL in OE_n<4> 12 11 INJ<4> GND in GND 14 13 LED_n<4> in LVTTL LVTTL in OUTP<3> 16 15 INTTL<3> out LVTTL LVTTL in OE_n<3> 18 17 INJ<3> GND in GND 20 19 LED_n<3> in LVTTL LVTTL in OUTP<2> 22 21 INTTL<2> out LVTTL LVTTL in OE_n<2> 24 23 INJ<2> GND in GND 26 25 LED_n<2> in LVTTL LVTTL in OUTP<1> 28 27 INTTL<1> out LVTTL LVTTL in OE_n<1> 30 29 INJ<1> GND in GND 32 31 LED_n<1> in LVTTL NC - - 34 33 GND - GND power in GND 36 35 GND in power
Note: 1) INJ<1..5> can be jumpered on SU751 to INP<1..5> in order to be fullly compatible to SU704. Normally not necessary. 2)The additional GND pins can be connector in the FPGA as outputs driving 0. Be carefull not to drive 1! 3) The LEDs are active low, like in SU704.
List of the sub-modules for SU751
| Name | Short description | Isolated? | Used power | drive 50-Ohm | Pin INP | Pin OUTP | Pin OE_n | LEMO | Comment |
|---|---|---|---|---|---|---|---|---|---|
| A-0 | Comparator | no | -5V,+5V,+3.3V | --- | Comparator Output | - | - | Analog In (AIN) | INP=1 when AIN > threshold (set by resistors), else 0 |
| A-1 | Comparator with DAC | no | -5V,+5V,+3.3V | --- | Comparator Output | SDA | SCL | Analog In (AIN) | INP=1 when AIN > threshold (set by 12-bit DAC MCP4726, options: 0..4.095V, +/-4.095V, +/-2.047V), else 0 |
| A-1 | 12-bit DAC | no | -5V,+5V,+3.3V | ??? | - | SDA | SCL | Analog Out (AOUT) | AOUT is DAC (MCP4726) output, options: 0..4.095V, +/-4.095V, +/-2.047V |
| B | NIM input | no | -5V,+3.3V | --- | converted NIM in | - | - | NIM in, 50 Ohm | INP=1 when NIM input < -0.3V, else 0 |
| C | NIM output | no | -5V/40mA,+5V/4mA | Yes | - | NIM output state | - | NIM output | OUTP=1 => LEMO sinks 16 mA, OUTP=0 => LEMO output off |
| D | LVTTL in/out | no | +3.3V | ??? | Input from LEMO | Output to LEMO | Output enable (active low) to LEMO | LVTTL in/out, optional pull-up and termination | LEMO=OUTP when OE_n=0 else tri-stated when OE_n=1; INP=LEMO |
| E | ECL/LVDS in | no | -5V,+3.3V | --- | converted input from LEMO | - | - | ECL or LVDS input with optional proper termination | uses differential LEMO! |
| F | LVTTL in/out | yes | +3.3V | Yes | Input from LEMO | Output to LEMO | Output enable (active low) to LEMO | LVTTL in/out, optional pull-up and termination | LEMO=OUTP when OE_n=0 else tri-stated when OE_n=1; INP=LEMO |
| G | LVTTL in | yes | +5,+3.3V | --- | inverted input from LEMO | - | - | input to optocoupler | INP=1 when current to LEMO in < 1mA, INP=0 when current to LEMO in > 1.6 mA |
| H | LVDS in/out | no | +3.3V | 100 | converted input from LEMO | Output to LEMO | Output enable (active low) | LVDS input/output with proper termination | uses differential LEMO! |
| I | ADC | yes | +5V,+3.3V | ??? | SPI SDATA | SPI SCLK | SPI CSn | Analog input | ADCS7476, 12-bit, 1MS/s, VREF 4.096V, 3.3, 3.0, Range 0..VREF, 0..VREF/2, +/-VREF, +/-VREF/2, 0..2*VREF, +/-2*VREF |
| S | DDS | yes | +5V,+3.3V total 70 mA | ??? | ? | ? | ? | Analog Output/Sync | DUAL! AD5932, 10-bit, 50MS/s, with Amplifier +/-1V on 50 Ohm |
