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Programmable Gain Main Amplifiers (PGMA)

8 / 16 Channels

Neuroscience Products > Accessories > Amplifiers > Chronic Recording Devices > Data Acquisition Systems > Eye Tracking Systems > Microdrives > Microelectrodes > Microinjection Systems> Optogenetic Products > Primate Training Systems > Screws > Software > Stereotaxic Instruments > Cell & Tissue Media > Rodent Products Medical Products Electrochemical Products

Programmable Gain Main Amplifiers (PGMA)

8 / 16 Channels

The TREC Programmable gain main amplifier (PGMA-02) is a multichannel, differential input main filter/amplifier for neurophysiological applications (e.g. extracellular recording with multiple microelectrodes). This PGMA-02 combines a fixed band pass filter and the variable signal amplification in one instrument.

Key features:

  • 16 amplifier channels (with several PGMA-02 up to 128 channels possible)
  • Low-noise amplifier technique
  • Differential input amplifier
  • Computer controlled gain settings via LAN port (TCP/IP protocol)
  • Individual gain settings vom x5 up to x5000 (in 10 steps)
  • Bandwidth 0.1Hz … 10kHz (other cut-off frequencies on request)
  • AC coupled input circuit
  • Low noise technique
  • PGA control software
Technical Data
Features
Downloads
Dimensions and Weight 
Length (mm):485mm
Width (mm):250mm
Height (mm):45mm
Weight (kg):2kg
Power Supply 
Main Supply voltage (V):90-264V AC /47-63Hz (external power supply)
Power Consumption (W):6W
Enviromental condition 
Operating temperature range:+10°C to +40°C
Transport temperature range:+10°C to +40°C
Humidity:20% – 80% RH (non-condensing)
Input data 
Max. input voltage:±2V
Number of channels:8 or 16
Input connector type:D-SUB 25pin
Input noise voltage (VI, RMS):2.0-2.4µV
Input noise voltage density (VI, RMS):24nV/?Hz
Single Unit Acitivity (SUA) Filter/Amplifier 
Gain:5, 10, 25, 50, 100, 250, 500, 1000, 2500, 5000
Input impedance:2M?//30pF
Low Pass cut-off [kHz]:10 fixed (other values on request)
High Pass cut off [Hz]:500 fixed (other values on request)
Filter Characeristic:Butterworth
Local Field Potential (LFP) Filter/Amplifier 
Gain:5, 10, 25, 50, 100, 250, 500, 1000, 2500, 5000
Input impedance:1M?//30pF
Low Pass cut-off [Hz]:140 fixed (other values on request)
High Pass cut off [Hz]:0.1
Filter Characeristic:Butterworth
Broadband Filter/Amplifier 
Gain:5, 10, 25, 50, 100, 250, 500, 1000, 2500, 5000
Input impedance:1M?//30pF
Low Pass cut-off [kHz]:10 fixed (other values on request)
High Pass cut off [Hz]:0.01
Filter Characeristic:Butterworth
Output data 
Max. Output voltage swing:±10V
Number of output channels:8 or 16
Output impedance:200?
Output connector type:D-SUB 25pin

Features

The PGMA-02 has multiple amplifier channels with ac-coupled differential input stages on each channel. Each of the amplifier channels has a band pass filter characteristic. The cut-off frequencies of this band pass filters can be adapted to the requirements of our customers. (e. g. 0.06Hz – 15kHz). Each channel has a variable gain. The gain can be selected via software interface on a personal computer. The connection between personal computer and PGMA-02 is made via LAN interface (TCP/IP protocol). The gain factor is displayed on the PC monitor.
It is possible to adjust gain values of 5, 10, 25, 50, 100, 250, 500, 1000, 2500, 5000 (±1.5%).
The PGMA-02 is a very low noise main amplifier system which is available in an 8-, 16-, 32- and 64 channel version (other numbers of amplifier channels are available on request) .

Figure 1: Graphical user interface of the TREC programmable gain main amplifier PGMA-02

Figure 2: Connection scheme of the 16 channel PGMA-02. Preamplifiers and USB-Data Acquisition Systems are available from TREC. The PGMA-02 can also be used with other preamplifiers or data acquisitions systems

The 16 channel version of the programmable gain main amplifier PGMA-02 has 16 independent, differential input, low noise programmable gain amplifier channels. The connection diagram of an 16 channel PGMA-02 is shown in figure 2.

Publications

[1] Aggelopolous N. C., Deike S., Selezneva E., Scheich H., Brechmann A., Brosch M. Predictive cues for auditory stream formation in humans and monkeys. European Journal of Neuroscience, December 2017, DOI: 10.111/ejn.13808

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