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ADC512 Dual Channel Analog Input FMC

Dual Channel 3 GSPS 8-bit ADC FPGA Mezzanine Card (FMC)

  • Dual National Semi ADC083000, 8-bit ADCs
  • Up to 3 GSPS
  • ADC coupled analog input bandwidth >2.25GHz
  • Multi-board synchronization capability
  • FMC/VITA 57 (draft) form factor
  • Air and conduction-cooled variants

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The ADC512 provides system developers with ability to directly connect analog input with FPGA based embedded processing nodes. As the ADC512 is part of a range of modular I/O solutions conforming to the VITA 57 FMC standard, developers can change I/O formats by changing relatively low cost modules while the more expensive host processing cards remain the same. This allows developers to reuse host firmware and software elements from previous projects thus reducing cost, development times and risk. Typical DSP applications for this module include Signal Intelligence (SIGINT), Electronic Counter Measures (ECM), and Radar.

The analog inputs to the FMC feed through front panel MMCX connectors. Input impedance is 50 Ohm, AC coupled. The ADC512 uses two National Semiconductor ADC083000 analog to digital converters. Each device supports a sampling rate up to 3 GSPS with 8-bit resolution. The digital outputs of the ADCs are routed as LVDS signals to the high-bandwidth FMC connector, through which the baseboard FPGA receives the data and controls the data flow.

Clock and Trigger Signals
The ADC512 achieves a 3 GSPS sampling rate by clocking on both the rising and falling edge of a 1.5 GHz input clock source. The input will accept frequencies from 200MHz up to 1.7GHz, with an input level between -5dBm and +5dBm. The clock input may be sinusoidal or square.

LVPECL compatible trigger input and output is directly linked to the FPGA host. Trigger signals can be used for a variety of purposes including triggering, gating, and multi-board synchronization when using the appropriate HDL application code.

FMC
The FPGA Mezzanine Card (or FMC) defined by the VITA 57 specification uses a smaller form factor (69mm x 76.5mm, single-wide) than PMC/XMC modules to provide interchangeable front panel I/O functionality for (but not limited to) 3U and 6U form factor processor cards.

An FMC module uses either a Low Pin Count (LPC) connector with 160 pins or a High Pin Count (HPC) connector with 400 pins (like the ADC512). The connector supports single-ended and differential signaling up to 2 Gbps and Multi-Gigabit Transceivers (MGTs) up to 10 Gbps. These connections are directly to the FPGA, removing bridge latencies and maximizing data throughput.

ADC512 Hosts
The ADC512 can be fitted to FMC hosts like Curtiss-Wright’s FPE320, FPE650 and HPE720. The combination of the ADC512 with a suitable host provides developers with a high quality analog I/O and processing solution in a single VPX/VPX-REDI slot.

The ADC512 is supported by Curtiss-Wright's XF suite which includes software APIs for remote hosts and HDL examples.