The FMC1831 is an FMC module designed to be compatible with AMC, VPX, PCI, PCIe, CompactPCI and PC/104 carriers. The module has two dual channel AD9361 transceivers with a maximum sampling frequency of 122.8 MHz over a bandwidth of 200 KHz to 56 MHz. A reference clock can be either externally supplied or be generated from an internal PLL. All input and output signals are connected via SSMC connectors for secure connectivity and signal integrity.
![](https://www.sundance.technology/wp-content/uploads/2019/08/MIC1831.jpg)
Functional Structure of the Module
- A set of secondary power supplies for all module blocks
Connector FMC HPC (ASP-134487-01):
- Input of 12P0V power supply lines, 3P3V, 3P3VAUX and Vadj
- I2C interface with carrier board
- Input and output of reference clock signals and signal synchronization
- Input / output of digital data buses between the carrier-board on chips of the transceivers, including tracking cycles and the signal of frames.
Transceivers:
- 1 or 2 AD9361 chip, depending on the version;
- Maximum sampling frequency fs, 122.8MGHz in case of the 1T1R configuration;
- 12 bits of input/output data;
- The range of readjustment of the mixing unit’s reference signal (using the internal synthesizer) – 70-6000 MHz;
- The range of readjustment of the mixing unit’s reference signal (using an external signal) – 70-4000 MHz;
- Input / output data standard – LVDS / CMOS;
- Data bus configuration – 1R1T, 1R2T, 2R1T, 2R2T;
- Modes of data bus operation – Single Port Half Duplex, Single Port Full Duplex, Dual Port Half Duplex, Dual Port Full duplex;
- Data format – offset binary code
- Data repetition frequency – fs – 4 * fs
Analog output filters:
- Selection of the filter type and its characteristics, in accordance with the version;
- Nomenclature of the filters to be installed is represented by LPF, High-pass and bandpass filters Mini-Circuits series LFCN, HFCN and BFCN, respectively
Connector for analog signals:
- SSMC AEP 7110-1511-000
Clocking circuit:
- The clock buffer ADCLK846 chip for distribution of reference frequency of the digital portion of transceivers
- Buffer on the NB7VQ14M chip for distributing the mixing unit’s signal
Chip of the non-volatile EEPROM memory:
- AT24C512C microchip with a volume of 512Kbit for storing service and identification information on the mezzanine.
Block Diagram
![](https://www.sundance.technology/wp-content/uploads/2019/08/FMC1831.png)