Ultra Low Noise Real-Time Digital Pulse Processor (DPP) and Scintillation Detector Spectrometer in One Package. The handheld nanoMCA-II-SP is the ultimate device in the nanoMCA family. It is a more powerful version of the original nanoMCA-SP device, and includes a built-in PMT preamplifier, as well as three additional input/output channels, an improved sampling period, and a wider range of pulse-shape time constants. See the full list of features below.

The nanoMCA-II-SP is a state-of-the-art small, low power, ultra-high performance digital MCA with built-in preamplifier, featuring:

  • Built-in preamplifier for scintillation detectors coupled to photo-multiplier tubes
  • Full featured 80MHz Digital Pulse-Processing (DPP) Multichannel Analyzer (MCA)
  • Two analog inputs supporting reset and resistive feedback preamplifiers and a photomultiplier anode sensing built-in preamplifier
  • Pulse-Height Analyzer (PHA) mode allows for height analysis using analog shapers
  • Free labZY-MCA software for device configuration, spectra acquisition, and spectrum analysis using the built-in Trace Viewer, the most advanced detector signal exploration tool
  • Automatic functions: thresholds, pole-zero, input polarity, inhibit polarity
  • Built-in coincidence logic with delays and coincidence window generator
  • Convenient and flexible connectivity
    • I/O: Single mini USB connector also power source
    • Power: USB, mini wall adapter, or optional battery
    • Device interface: Wired or wireless (USB, Ethernet, WiFi, Bluetooth)
  • Exceptional temperature stability
  • Small size (92 mm x 38 mm x 25 mm) and low power (850mW typ)

Download the full nanoMCA-II-SP Data Sheet [pdf]


Dimensions: 3.6″ x 1.5″ x 1″ (92 mm x 38 mm x 25 mm)
Weight: 135 g

Spectrum Size

16k channels

Inputs and Outputs

Input A: Signals from RC Feedback Preamplifiers (exponential signal)
Input B: Signals from PMT Anode (AC or DC coupled)
Input C: Digital Input (3.3V CMOS)
Input D: Digital Input (3.3V CMOS) or Analog Input (0 to +2.5V)
Input/Output R: Digital Input (3.3V CMOS) or Digital Output (3.3V CMOS, Open Drain or Tristate)
Output S: Digital Output (3.3V CMOS, Open Drain or Tristate)
Output T: Digital Output (3.3V CMOS, Open Drain or Tristate)

DPP Sampling Period

8 ns

DPP Quantization

16 bit

DPP Time Constant

Primary (long) TC: 125 ns to 4.1 µs
Secondary (short) TC: 1 ns to 255 ns

Coincidence Logic Signal

Input D or Input R

Pulse Shapes


Pulse Shape Flat Top

Adjustable, 0 to 2 µs


Pole-Zero, Thresholds, Input Polarity

I/O Connector

Single mini USB for all interfaces

Interface Connectivity

Wired: USB (also serves as power source), Ethernet
Wireless: WiFi, Bluetooth

Power Requirements

5V@300mA for USB, 5V@1A wall plug

Operating Power

1350mW at 25°C and USB interface

Temperature Operating Range

-20°C to +60°C

See the Support tab for supporting documentation



See below for nanoMCA-II-SP performance examples.