5-GSPS Dual DAC FMC Module - FMC2657

General Description

The Euvis FMC2657 module is a high-speed, dual-channel FMC module ideal for use in leading-edge applications. The FMC2657 generates dual CW waveforms with sampling rates up to 5 GSPS. The FMC2657 module is equipped with two Euvis MD657B digital-to-analog converters (DACs). At 5 GSPS, the module provides analog outputs with bandwidth from DC to 2.5 GHz (Nyquist bandwidth). It can be selected to operate in return-to-zero mode to extend the usable bandwidth to 2.5 ~ 5 GHz. The digital data multiplexing ratio is 4:1 and the required digital data rate is 1.25 Gb/s with DAC's operated at 5 GSPS. The 96 LVDS pairs of digital data are fed through two FMC connectors, a high-pin-count (HPC) and a low-pin-count (LPC). Sampling window select (SEL’s) and reset signals of two DAC’s can be independently controlled via the FMC connectors. The module includes two clock buffers to relax the need of high-power clock source. The amplitudes and duty cycles of the clock buffers can be programmed though the I2C interface. 


Ordering and Pricing Information

For pricing information, please visit Pricing.
For formal quotations, availabilities, and quantity-specific orders, please e-mail info@euvis.com, or call 1-805-583-9888.

Key Features


The FMC2657 module can generate arbitrary patterns with high sample rates to be used for a variety of leading-edge applications, such as:

Module Photo:



Functional Block Diagram

block diagram

Functional Specifications

Amplitude Resolution 2 CH x 12 bits
Sampling 1 ~ 5 GSPS
Input Clock
Type Single Ended, 50-Ω terminated
Connector Type SMA
Frequency Range 1 ~ 5 GHz 
Power Level +3 to +10 dBm (typical +6 dBm)
Analog Outputs
Type Dual channel
Each channel is differential, 50-Ω terminated
Connector Type SMA
Output Bandwidth Normal mode: DC ~ 2.5 GHz
Return-to-Zero mode: DC ~ 2.5 GHz and 2.5 ~ 5 GHz
Output Level -635 mV to 0 V
Output Power Normal mode: -4 dBm to 0 dBm
Return-to-Zero mode: -3 ~ -7 dBm
Residual Phase Noise @ 10kHz from Carrier < -130 dBc/Hz
Output Return Loss 15 dB
Digital Data Inputs
Connector FMC High-Pin Count (HPC) and Low-Pin Count (LPC)
Logic LVDS
Data MUX Ratio 4 : 1
Data Width 48 pairs / Channel
DAC Control
DAC Reset FMC, LVDS Pairs
DAC Return-to-Zero Mode Select FMC, LVCOMS25
DAC Amplitude Control FMC, I2C
DAC Sampling Window Select FMC, LVCOMS25
Clock Buffer Control
Clock Amplitude FMC, I2C
Clock Duty Cycle FMC, I2C
Required DC Supplies
+ 12V 0.8 A
+ 3.3V 150 mA

Board Dimensions (mm) 


Edge Length (mm)
a 139 b 61.7 c 2.4
d 9.1 e 2.1 f 8
g 131.3 h 21.9 i 3
j 56.9 Width 139 Height  78.8

Test Setup

In applications, FMC2657 requires a VITA 57.1-compliant carrier board to provide all digital data, DAC controls, I2C signals, and DC power via FMC connectors. The carrier is required to provide both +12V and +3.3V power, with minimum current capacities of 1A and 500mA respectively. Digital data and DAC resets are in LVDS pairs. The DAC sampling selects and return-to-zero mode select are single-ended LVCMOS25. The carrier board can be an advanced FPGA evaluation board, such as Xilinx VC707, with proper configurations.

The FMC2657 module is tested using Euvis carrier FMCC371. The carrier consists of a Xilinx XC6VLX130T, a USB controller, and power modules. In the test setup, the carrier is controlled by a PC host via the USB interface. The carrier can store up to 2 x 16K words of data in memory. The maximum data length is 4 μs at 4 GSPS for each channel. Several built-in waveforms are available within the FMC GUI. Waveform generation and download are performed in the GUI.

3319 Old Conejo Rd., Newbury Park, CA 91320 | Tel: 805-583-9888 | Fax: 805-583-9889 | info@euvis.com