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Technical Specifications

Board Type FPGA Mezzanine Card - FMC VITA 57.1
FMC Connector Type LPC - HPC compliant
Number of Channels 4
Resolution 20 bits
Current Polarity Bipolar
Full-Scale Current RNG0: ± 1 mA
RNG1: ± 1 µA
(configurable upon request)
Maximum Sampling Rate 1 MSPS
Equivalent Signal-to-Noise RNG0: > 100 dB
RNG1: > 90 dB
Resolution RNG0: 2 nA
RNG1: 2 pA
Conversion Time 650 ns
Input Connectors Triaxial - LEMO 00.650 Series
Coaxial - LEMO upon request
Bandwidth (-3dB) > 10 kHz
Temperature Coefficient - TC 10 ppm/°C
Unbalance of Input Channels < 0.05 % without calibration service
Differential TC < 25 ppm/°C
Other Features - signal ground floating up to ±300V
- trigger / SoC signal on FMC connector
- range selection on FMC connector
- calibration service (optional)
- customization of the input ranges (optional)

Ordering Options

Product code Description Ordering Code
FMC-PICO-1M4 FMC-Pico-1M4 - 4-channel 20-bit 1 MSPS FMC Floating Ammeter FMCPICO1M4XA
FMC-PICO-CUST FMC-Pico-1M4 - Customization of the input ranges FMCPICOCUSTX
FMC-PICO-CALIB FMC-Pico-1M4 - Calibration service FMCPICO1M4CL

Immagine del prodotto

The FMC-Pico-1M4 is a standard FPGA Mezzanine Card (FMC - VITA 57.1) Low Pin Count (LPC) board that allows to monitor bipolar currents up to 1 mA with high sampling rate and high resolution.

The bord resolution is 20 bit, obtained from independent, simultaneous sampling and low-delay Analog to Digital Converters (ADCs).

Each channel has two full-scale measuring ranges, up to ±1 mA and ±1 uA respectively and the current source can be floating up to ±300 V respect to the FMC ground. The floating capability of the inputs is perfectly suitable for applications where the detector or current source needs to be biased.

The analog front-end is designed in order to achieve low noise, low temperature dependance and very small unbalance between channels. The analog characteristics can be further improved by requesting a factory calibration of the channels - calibration data are stored in the on-board EEPROM memory that can be read via an I2C bus on the FMC connector.

Immagine del prodotto

A metallic shield has the dual function of shielding the analog front end from external noise sources and also isolates the internal electronics that could be floating up to ±300 V.

A trigger signal can be fed on the FMC connector in order to start the conversion of data samples: this feature allows to synchronize the board acquisition to an external event - e.g. machine revolution frequency in storage rings.

Data readout can be performed via separate SPI links - i.e. one for each channel, sharing the same clock signal.

  • FPGA Mezzanine Card
  • VITA 57.1 Standard
  • High Resolution multi-channel current measurements up to ±1 mA (configurable upon request)
  • 4 Current-Input Channels - Bipolar
  • 1 MSPS simultaneous and independent sampling
  • 20-bit Resolution
  • Floating up to 300 V
  • Compatible with the DAMC-FMC25 carrier board

Documentation Software/Firmware
FMC-Pico-1M4 - Product Presentation Last update: 2015-04-30 20:31:57

FMC-Pico-1M4 - User's Manual v1.2 Last update: 2015-08-12 15:12:27

Software/firmware not available.

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