Soterix Medical introduces the best in class current source which can isolate and scale any signal you create. The Linear Current Isolator (LCI) can be used for a variety of physiological stimulation protocols. Its high input impedance and high common mode voltage prevents ground loop. With high bandwidth and high voltage slew rate, it can be used for high frequency stimulations or sharp waveforms. The LCI has un-matched DC accuracy and provides option for charge balanced stimulation to compensate the DC offset of function generators. The LCI includes an unique selectable feature that can remove DC offset of output. This ensures stimulation without causing harm to tissue or corroding electrodes. The LCI is easy to use and has a simple user interface and requires minimal maintenance due to an error detection system, internal calibration, and advanced power management.
In order to deliver charge balanced stimulation, the device is required to sink the exact same amount of charge that is delivered to the tissue. Function generators or DACs which can be used to command the current source, have DC offset at the output. Even a small amount of offset at the device input, causes current leakage at output, which will be accumulated after multiple cycles and cause electrode corrosion. This feature subtracts DC value from input signal.
AC characteristics describe the process of output following the input. The following plots show the output gain and the output phase with a 1 Vpp sinusoid as input signal.
|AC Transfer Characteristics|
|Slew Rate||11 V/μs|
|Bandwidth (-3dB)||440 kHz|
|Input to Output Propagation Delay||600 ns|
Minimum 0.03% ( 1mA/V); Minimum 0.02% (100 uA/V)
Slew rate (11 V/us) ; Input to Output propagation delay (600 ns)
Shielded to reduce noise
Simple and obvious to use controls