Colibrick A/D Converter

Colibrick is an external 24-bit A/D converter that measures the voltage of chromatographic and electrochemical detectors.

Colibrick is designed for analog data acquisition from any chromatograph for Clarity chromatograpy software. It uses the USB communication cable and is therefore powered directly from the computer. The unit can be connected or disconnected anytime without the necessity to switch the computer off. The input connector is compatible with the internal INT7/9 boards and U-PAD/2 devices.

Colibrick is a modernized successor to the U-PAD2 converter and the Int9 card.

Brief list of features


Technical specification

Converter type 24 bit integrating, delta-sigma
Analog inputs differential
Number of channels 1, 2, or 4 fully independent and isolated
Input impedance >1 MOhm
Input range unipolar and bipolar, each channel independently 156.26, 1 250, or 12 123 mV
Integration frequency
(Sample Rate)

6.25, 12.5, 25, 50, 100, 200, 400 samples per second for 50Hz mains frequency filter
7.5, 15, 30, 60, 120, 240, 480 samples per second for 60Hz mains frequency filter

Temperature dependence  
Digital inputs 4 TTL (5 V)
Digital outputs

8 TTL (5 V) maximum current load 20 mA, maximum total current load for all outputs 100 mA
4 of them also as relay contacts - normally open (i.e. contact closure) max. current 0.5 ADC, max. voltage 100 VDC, max. switching power 10 VA, max.  resistance 150 mΩ

Dimensions 105 x 124 x 22mm
Weight 290g
PC interface USB
Power supply from the PC via the USB cable

Typical noise-free resolution for various acquisition speeds and input ranges:

  12 123 mV 1 250 mV 156.26 mV
6.25 Hz 21 bit 21 bit 20 bit
25 Hz 21 bit 21 bit 20 bit
100 Hz 19 bit 19 bit 19 bit

Possible combinations:

  Windows 11
(64 bit)
Windows 10
(32 and 64 bit)
Windows 8.1
(32 and 64 bit)
Windows 7SP1,
(32 and 64 bit)
Colibrick Clarity
Clarity Lite
both since version 8.7
Clarity Lite
both since version 6.2
Clarity Lite
both since version 4.0.3
Clarity Lite
both since version 4.0

Combinations with obsolete operating systems:

  Windows VistaSP2* (32 and 64 bit) Windows XPSP3
Colibrick Clarity, Clarity Lite,
both since version 4.0 until 7.2
Clarity, Clarity Lite
both since version 4.0 until 7.4.1

* Windows Vista is supported until Clarity 7.2.


Part No. U31: 1 channel
U32: 2 channels
U34: 4 channels
Warranty 3 years
Related products Clarity software - Part No. C50
Clarity Lite - Part No. C40
PC Interface USB
Cables included Cable p/n KB71, KB72 or KB74 depending on number of channels
USB cable p/n SK10