General Description
The Euvis FMC1657 module is a high-speed single-channel FMC module ideal for use in leading-edge applications. The FMC1657 generates CW waveforms with sampling rates up to 5 GSPS. The FMC1657 module is equipped with the Euvis MD657 digital-to-analog converter (DAC). At 5 GSPS, the module provides analog outputs with bandwidth from DC to 2.5 GHz (Nyquist bandwidth). The total multiplex ratio is 4:1 and the required digital data rate is 1.25 Gb/s when the DAC is operated at 5 GSPS. The 48 LVDS pairs of digital data are fed through a FMC connector, a high-pin-count (HPC) connector. Sampling window select (SEL’s) and reset signals of the DAC 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
- 12-bit DAC
- Sampling rate range: 1 ~ 5 GSPS
- On-board clock buffers with adjustable gain and duty cycle
- +12 V and +3.3 V power provided by the carrier card
- VITA 57.1 standard compliant
Applications
The FMC1657 module can generate arbitrary patterns with high sample rates to be used for a variety of leading-edge applications, such as:
- Orthogonal Frequency Division Multiplexing (OFDM) transmitter
- Optical OFDM transmitter
- Ultra-Wideband transmitter
- Linear Frequency Modulation (LFM) and chirping
- Frequency Modulated Continuous-wave radar (FMCW)
- Electronic warfare
- VSAT satellite communications
- Test and measurement equipment
Module Photo:
Functional Block Diagram
Functional Specifications
| General | |
| Amplitude Resolution | 1 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 | 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) |
| Logic | LVDS |
| Data MUX Ratio | 4 : 1 |
| Data Width | 48 pairs |
| DAC Control | |
| DAC Reset | FMC, LVDS Pairs |
| DAC Return-to-Zero Mode Select | FMC, LVCOMS25 |
| DAC Sampling Window Select | FMC, LVCOMS25 |
| Clock Buffer Control | |
| Clock Amplitude | FMC, I2C |
| Clock Duty Cycle | FMC, I2C |
| Required DC Supplies | |
| + 12V | 0.6 A |
| + 3.3V | 100 mA |
Board Dimensions (mm)
| Edge Length (mm) | |||||
| a | 69 | b | 61.7 | c | 2.4 |
| d | 9.1 | e | 2.1 | f | 8 |
| g | 61 | h | 21.9 | i | 3 |
| j | 56.9 | Width | 69 | Height | 78.8 |
Test Setup
In applications, FMC1657 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 2A 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 FMC1657 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 32K words of data in memory.
The maximum data length is 4 μs at 8 GSPS for each channel.
Several built-in waveforms are available within the FMC GUI.
Waveform generation and download are performed in the GUI.
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