1 MSPS 20-bit multi-channel bipolar floating picoammeter / electrometer with MTCA.4 Rear I/O
The analog front-end is composed of a specially designed transimpedance input stage for current sensing combined with analog signal conditioning and filtering stages making use of state-of-the-art electronics. The 20-bit resolution is obtained from independent, simultaneous sampling and low-delay SAR (Successive Approximation Register) Analog to Digital Converters (ADCs).
Each channel has two full-scale measuring ranges and the current source can be floating up to ±300 V respect to the chassis ground. The floating capability of the inputs is perfectly suitable for applications where the detector or current source needs to be biased.
Different versions are commercially available:
Custom solutions are available upon specific request.
The pure analog characteristics are additionally improved with digital channel calibration. Calibration data are stored in the on-board EEPROM memory and are loaded in the signal-processing logic on power-up.
The on board Virtex-5 FPGA performs the conversion from raw data values acquired from ADCs to a single-precision floating point numbers, representing the measured current in amperes [A]. The floating point format is highly suitable for additional post-processing. The signal-processing logic can also be configured to capture the signal on certain trigger condition. Additionally, the internal memory can also be programmed to store data before trigger condition happens, providing a valuable data to user.
The communication with Virtex-5 FPGA is performed with the PCI express bus. All system parameters (e.g. analog front-end range, sampling frequency) can be achieved by writing to appropriate registers from PCI express. The FPGA also embeds a Scatter-Gather DMA which can be used to transfer data to PCI express root port (e.g. CPU).
Input Channels
8
Input Connector Type
Triaxial - LEMO 00.650 Series (EPL.00.650)
Current Input Full-Scale Ranges [RNG0, RNG1]
±130 uA, ±16 uA
Maximum Sampling Frequency
1 MSPS (per channel)
Current Resolution - LSB [RNG0, RNG1]
300 pA, 35 pA
Bandwidth (-3dB)
35 kHz
Temperature Coefficient - TC
10 ppm/°C
Front End Isolation Voltage
± 300 V
Board Size
Double-Width - Mid-Size
Standard
MicroTCA.4: AMC.0, AMC.1
Module Management: IPMI Version 1.5, MMC V1.0
Compatibility
Zone3 Classification: Class D1.1
AMC Backplane Support: Full
Trigger inputs
Internal
AMC port #17 RX
AMC port #18 RX
AMC port #19 RX
AMC port #20 RX
Operating Temperature
0...50°C
Input Channels
8
Input Connector Type
Triaxial - LEMO 00.650 Series (EPL.00.650)
Current Input Full-Scale Ranges [RNG0, RNG1]
±10 mA, ±500 uA
Maximum Sampling Frequency
1 MSPS (per channel)
Current Resolution - LSB [RNG0, RNG1]
20 nA, 1 nA
Bandwidth (-3dB)
300 kHz
Temperature Coefficient - TC
10 ppm/°C
Front End Isolation Voltage
± 300 V
Board Size
Double-Width - Mid-Size
Standard
MicroTCA.4: AMC.0, AMC.1
Module Management: IPMI Version 1.5, MMC V1.0
Compatibility
Zone3 Classification: Class D1.1
AMC Backplane Support: Full
Trigger inputs
Internal
AMC port #17 RX
AMC port #18 RX
AMC port #19 RX
AMC port #20 RX
Operating Temperature
0...50°C
Input Channels
8
Input Connector Type
Triaxial - LEMO 00.650 Series (EPL.00.650)
Current Input Full-Scale Ranges [RNG0, RNG1]
±1 mA, ±100 uA
Maximum Sampling Frequency
1 MSPS (per channel)
Current Resolution - LSB [RNG0, RNG1]
2 nA, 200 pA
Bandwidth (-3dB)
30 kHz
Temperature Coefficient - TC
10 ppm/°C
Front End Isolation Voltage
± 300 V
Board Size
Double-Width - Mid-Size
Standard
MicroTCA.4: AMC.0, AMC.1
Module Management: IPMI Version 1.5, MMC V1.0
Compatibility
Zone3 Classification: Class D1.1
AMC Backplane Support: Full
Trigger inputs
Internal
AMC port #17 RX
AMC port #18 RX
AMC port #19 RX
AMC port #20 RX
Operating Temperature
0...50°C
Input Channels
8
Input Connector Type
Triaxial - LEMO 00.650 Series (EPL.00.650)
Current Input Full-Scale Ranges [RNG0, RNG1]
±1 mA, ±20 uA
Maximum Sampling Frequency
1 MSPS (per channel)
Current Resolution - LSB [RNG0, RNG1]
2 nA, 40 pA
Bandwidth (-3dB)
200 kHz, 160 kHz
Temperature Coefficient - TC
10 ppm/°C
Front End Isolation Voltage
± 300 V
Board Size
Double-Width - Mid-Size
Standard
MicroTCA.4: AMC.0, AMC.1
Module Management: IPMI Version 1.5, MMC V1.0
Compatibility
Zone3 Classification: Class D1.1
AMC Backplane Support: Full
Trigger inputs
Internal
AMC port #17 RX
AMC port #18 RX
AMC port #19 RX
AMC port #20 RX
Operating Temperature
0...50°C
Input Channels
8
Input Connector Type
Triaxial - LEMO 00.650 Series (EPL.00.650)
Current Input Full-Scale Ranges [RNG0, RNG1]
±1 mA, ±1 uA
Maximum Sampling Frequency
1 MSPS (per channel)
Current Resolution - LSB [RNG0, RNG1]
2 nA, 2 pA
Bandwidth (-3dB)
10 kHz
Temperature Coefficient - TC
10 ppm/°C
Front End Isolation Voltage
± 300 V
Board Size
Double-Width - Mid-Size
Standard
MicroTCA.4: AMC.0, AMC.1
Module Management: IPMI Version 1.5, MMC V1.0
Compatibility
Zone3 Classification: Class D1.1
AMC Backplane Support: Full
Trigger inputs
Internal
AMC port #17 RX
AMC port #18 RX
AMC port #19 RX
AMC port #20 RX
Operating Temperature
0...50°C
Ordering code
Description
Action
AMCPICO8C1XA
AMC-PICO8-C1 – 8-channel AMC-MTCA.4 Floating Picoammeter (±110 uA, ±3 uA, BW = 35 kHz)
AMCPICO8C2XA
AMC-PICO8-C2 – 8-channel AMC-MTCA.4 Floating Picoammeter (±10 mA, ±500 uA, BW = 300 kHz)
AMCPICO8C3XA
AMC-PICO8-C3 – 8-channel AMC-MTCA.4 Floating Picoammeter (±1 mA, ±100 uA, BW = 30 kHz)
AMCPICO8C4XA
AMC-PICO8-C4 – 8-channel AMC-MTCA.4 Floating Picoammeter (±1 mA BW = 200 kHz, ±20 uA BW = 160 kHz)
AMCPICO8XAAA
AMC-PICO8 – 8-channel AMC-MTCA.4 Floating Picoammeter (±1 mA, ±1 uA, BW = 10 kHz)
Last reviewed: 2022-12-09 ⓘ More infoRevision: 1.2
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