Photo of Piggy Back Boards

The Piggy Back Boards family extends the I/O capabilities of the CAEN programmable logic platforms V2495/V1495 and DT5495, enabling the creation of highly customized digital processing and trigger systems.

Each base module features three expansion slots directly interfaced with the user FPGA, allowing up to three independent piggyback boards to be installed simultaneously. This modular architecture provides flexible adaptation of input/output standards and channel density to match the specific requirements of complex experimental setups.

By selecting among several dedicated expansion boards for differential, logic-level, or analog signals, the system can scale to a very high number of channels while maintaining deterministic timing and tight FPGA integration. With full expansion, the platform can reach up to 194 configurable I/O channels, making it suitable for advanced trigger logic, data acquisition control, and real-time digital processing applications.

  • Modular FPGA I/O expansion
    Up to three piggyback boards per module directly interfaced with the user FPGA.

  • Multiple signal standards supported
    LVDS, ECL, PECL, NIM/TTL and analog outputs available.

  • High channel scalability
    Up to 194 total I/O channels with full expansion.

  • Optimized for programmable logic platforms
    Fully compatible with V2495/V1495 and DT5495 programmable units.

Piggy Back Boards Models

Grid Compare
A395D

A395D

  • Piggy Back Board for CAEN Programmable logic Unit DT5495 and V2495 (V1495)

  • Up to 8 I/O selectable

  • NIM/TTL
A395E

A395E

  • Piggy Back Board for CAEN Programmable logic Unit DT5495 and V2495 (V1495)

  • 8 Analog Output

  • 16 bit resolution
A395C

A395C

  • Piggy Back Board for CAEN Programmable logic Unit DT5495 and V2495 (V1495)

  • Up to 32 Digital Output

  • ECL
A395A

A395A

  • Piggy Back Board for CAEN Programmable logic Unit DT5495 and V2495 (V1495)

  • Up to 32 Digital Input

  • LVDS/ECL/PECL/NIM/TTL
A395B

A395B

  • Piggy Back Board for CAEN Programmable logic Unit DT5495 and V2495 (V1495)

  • Up to 32 Digital Output

  • LVDS 100 Ohm RI
Image
Name
Description
No. of Channels
Channel type
Max Frequency (MHz)
Front panel connector
Note
A395D

A395D

NIM/TTL

8

Digital I/O selectable

250 MHz

LEMO 00

NIM/TTL selectable 50 Ω Rt
A395E

A395E

16 bit resolution Output range:± 5V @10 Ω RL, ± 4V @200 Ω RL

8

Analog Output

-

LEMO 00

DAC board equipped with DT5495 – Vx495 Firmware and VHDL source for custom development
A395C

A395C

Differential ECL

32

Digital Output

300 MHz

3M P50E-068-P1-SR1 type (34+34) pins

ECL
A395A

A395A

Differential LVDS/ECL/PECL

32

Digital input

200 MHz

3M P50E-068-P1-SR1 type (34+34) pins

single ended TTL optional
A395B

A395B

Differential LVDS

32

Digital Output

250 MHz

3M P50E-068-P1-SR1 type (34+34) pins

LVDS 100 Ω RI