USB-powered CFD (Constant Fraction Discriminator Module)

Portable and compact CFD module that produces precise digital time stamps for input signals with variable amplitudes but a consistent rise time.

KEY SPECS

– USB Type-C power
– Dimensions: 87×87×40 mm
– Single channel quad-output module
– x2 Digital LVTTL @ 50 Ohm
– x2 LVDS output
– Discrimination for positive and negative input signals
– Rise time: <500 ps
– Jitter: <15 ps
– Max repetition rate: 140 MHz
– Min input detectable signal: +/- 100 mV
– B2C or B2B selling options

Included in the price

– CFD Module
– Physical delay line SMA coaxial cable
– USB Type-C power cable

MAIN FUNCTION

MAIN FEATURES

Our constant fraction discriminator (CFD) is a compact and high-performance device that seamlessly converts analog signals (such as those from a PMT or the sync out of a pulsed laser source) into digital ones. Extremely user-friendly, this module easily integrates with various microscopy or spectroscopy setups. Additionally, it is now USB-powered for enhanced convenience and flexibility.

Compactness and portability

With dimensions of just 87x87x40 mm and powered by USB, our CFD offers unparalleled portability and flexibility. It can be powered by a cellphone charger or even a power bank, making it incredibly versatile for various applications.

Single channel module

FLIM LABS produces CFD modules with a flexible single-channel format; this feature is key for overcoming the inconvenience of other bulky modules that fit on lab-racks only.

Quad output

Our CFD module offers exceptional functionality, providing 4 digital twin outputs. Two outputs are available via SMA connectors at 2.5V with a 50-ohm impedance, ensuring seamless integration into existing setups. Additionally, two extra outputs are accessible through USB Type-C ports, implementing LVDS for effortless plug-and-play connections with our FLIM Data Acquisition Card.

Utilizing FLIMLABS’ proprietary protocol, these connections can be made using standard USB Type-C cables and connectors. This additional output capability enhances adaptability in various laboratory scenarios, offering increased versatility and convenience.

Signal polarity

Our CFD can handle both positive or negative input signals thanks to the polarity switch present on the module.

Output pulse width

The output pulse duration can be shaped by simply twisting the dedicated potentiometer level. Values range from a minimum of 5ns to a maximum of 250ns.

Physical Delay Line

The presence of a physical delay line allows for improved flexibility in matching the delay line length with the rising time of the input signal. This ensures an optimal digital discrimination.

USE CASES

MAIN FEATURES

Our constant fraction discriminator (CFD) is a compact and high-performance device that seamlessly converts analog signals (such as those from a PMT or the sync out of a pulsed laser source) into digital ones. Extremely user-friendly, this module easily integrates with various microscopy or spectroscopy setups. Additionally, it is now USB-powered for enhanced convenience and flexibility.

Compactness and portability

With dimensions of just 87x87x40 mm and powered by USB, our CFD offers unparalleled portability and flexibility. It can be powered by a cellphone charger or even a power bank, making it incredibly versatile for various applications.

Single channel module

FLIM LABS produces CFD modules with a flexible single-channel format; this feature is key for overcoming the inconvenience of other bulky modules that fit on lab-racks only.

Quad output

Our CFD module offers exceptional functionality, providing 4 digital twin outputs. Two outputs are available via SMA connectors at 2.5V with a 50-ohm impedance, ensuring seamless integration into existing setups. Additionally, two extra outputs are accessible through USB Type-C ports, implementing LVDS for effortless plug-and-play connections with our FLIM Data Acquisition Card.

Utilizing FLIMLABS’ proprietary protocol, these connections can be made using standard USB Type-C cables and connectors. This additional output capability enhances adaptability in various laboratory scenarios, offering increased versatility and convenience.

Signal polarity

Our CFD can handle both positive or negative input signals thanks to the polarity switch present on the module.

Output pulse width

The output pulse duration can be shaped by simply twisting the dedicated potentiometer level. Values range from a minimum of 5ns to a maximum of 250ns.

Physical Delay Line

The presence of a physical delay line allows for improved flexibility in matching the delay line length with the rising time of the input signal. This ensures an optimal digital discrimination.

USE CASES

FULL SPECS

N. of input signals1
N. of output signals4
Connector typeSMA or SMB (customizable)
Input polarityPositive or negative signals
Min input pulse width700ps
Rise time<500ps
Jitter<15ps
Output pulse widthfrom 5ns to 250ns
Max repetition rate140MHz
Min input detectable signal+/- 100mV
Max input amplitude5Vpp limited
Outputs amplitude2.5V or 4V @ 50Ohm load over SMA connector
LVDS over USB type-C connector
Impedance50 Ohm
Delay line lengthselectable with an external cable having a length based on input signal's rising-edge timing (1ns ~ 30 cm)
Power supplyUSB powered via USB type-C connector
Dimensions87×87x40 mm
Weight225g

For more information
about the product,
for asking us a quote
or a demo unit,
write us.

We will answer you
as soon as possible.

    For more information
    about the product,
    for asking us a quote
    or a demo unit,
    write us.

    We will answer you
    as soon as possible.