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Technical Specifications

Number of Channels 4
Resolution 20 bit
Current Polarity Bipolar
Sampling Rate up to 1 MSPS
Input Channel Potential ±300 V respect to chassis ground (continuous)
Full-Scale Current Ranges (RNG0, RNG1) Standard: ±1 mA, ±1 µA
"C1" version: ±110 µA, ±3 µA
"C3" version: ±10 mA, ±500 µA
"C4" version: ±1 mA, ±20 µA
"C5" version: ±10 mA, ±2.5 µA
Bandwidth (-3dB @ RNG0, RNG1) Standard: 10 kHz, 10 kHz
"C1" version: 35 kHz, 35 kHz
"C3" version: 300 kHz, 300 kHz
"C4" version: 200 kHz, 160 kHz
"C5" version: 300 kHz, 20 kHz
Equivalent Input Noise (RNG0, RNG1 @ 1 MSPS) Standard: 8 nA, 30 pA
"C1" version: 1.8 nA, 150 pA
"C3" version: 230 nA, 15 nA
"C4" version: 25 nA, 1.5 nA
"C5" version: 250 nA, 500 pA
Resolution (RNG0, RNG1) Standard: 2 nA, 2 pA
"C1" version: 220 pA, 6 pA
"C3" version: 20 nA, 1 nA
"C4" version: 22 nA, 40 pA
"C5" version: 20 nA, 5 pA
Absolute Temperature Coefficient - TC (RNG0, RNG1) Standard: 10 ppm/K, 20 ppm/K
"C1" version: 10 ppm/K, 10 ppm/K
"C3" version: 10 ppm/K, 10 ppm/K
"C4" version: 10 ppm/K, 10 ppm/K
"C5" version: 10 ppm/K, 10 ppm/K
Conversion Time 650 ns
Input Connectors Triaxial - LEMO 00.650 Series
Other Features - trigger / SoC signal on FMC connector
- range selection on FMC connector
- factory calibration
FMC Connector Type LPC - HPC compliant
Board Type FPGA Mezzanine Card - FMC VITA 57.1

Ordering Options

Product code Description Ordering Code
FMC-PICO-1M4 4-channel 20-bit 1 MSPS FMC Floating Ammeter FMCPICO1M4XA
FMC-PICO-1M4-C1 4-channel FMC Bipolar Floating Picoammeter (±110 μA, ±3 μA, BW=35 kHz) FMCPICO1M4C1
FMC-PICO-1M4-C3 4-channel FMC Bipolar Floating Picoammeter (±10 mA, ±500 μA, BW=300 kHz) FMCPICO1M4C3
FMC-PICO-1M4-C4 4-channel FMC Bipolar Floating Picoammeter (±1 mA BW=200 kHz, ±20 μA BW=160 kHz) FMCPICO1M4C4
FMC-PICO-1M4-C5 4-channel FMC Bipolar Floating Picoammeter (±10 mA BW=300 kHz, ±2.5 μA BW=20 kHz) FMCPICO1M4C5

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 10 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 µA (10 kHz bandwidth) for the FMC-PICO-1M4 version, up to ±110 µA and ±3 µA (35 kHz bandwidth) for the FMC-PICO-1M4-C1 version, up to ±10 mA and ±500 µA (300 kHz bandwidth) for the FMC-PICO-1M4-C3 version, up to ±1 mA and ±20 µA (200 kHz and 160 kHz bandwidth respectively) for the FMC-PICO-1M4-C4 version, up to ±10 mA and ±2.5 µA (300 kHz and 20 kHz bandwidth respectively) for the FMC-PICO-1M4-C5 version, 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 dependence 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.

  • High Resolution multi-channel current measurements up to ±10 mA (different versions available)
  • 4 Current-Input Channels - Bipolar
  • High Bandwidth
  • 1 MSPS simultaneous and independent sampling
  • 20-bit Resolution
  • Floating up to ±300 V
  • FPGA Mezzanine Card
  • VITA 57.1 Standard
  • Compatible with the DAMC-FMC25 carrier board

Documentation Software/Firmware
FMC-Pico-1M4 - Product Presentation Last update: 2021-02-15 12:48:19

FMC-Pico-1M4 - User's Manual v1.6 Last update: 2021-09-17 11:28:27

Software/firmware not available.

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