仪器简介：

Applications

Universal Low-Frequency Amplifier

Automated Measurements

Industrial Sensors

Detector Preamplifier

Integrated Measurement Systems

技术参数：

Bandwidth DC to 10� 200 or 500 MHz

Fixed or Variable Gain up to 60 dB (x 1�?00)

Noise down to 0.9 nV/√Hz

True DC Coupling� Switchable to AC

50 �� Bipolar or 1 M�� FET Input Stage

主要特点９�/strong>

Bandwidth

For optimum signal-to-noise performance choose an amplifier with sufficient bandwidth corresponding to the required signal bandwidth. However� keep in mind that unnecessary high bandwidth introduces more wideband noise. Therefore� FEMTO offers HVA Voltage Amplifiers with three different upper cut-off frequencies to match individual measurement requirements. And as with all FEMTO Adjustable-Gain Amplifiers the bandwidth remains constant when switching between the different gain settings which is very important for measuring fast signals and pulses.

True DC-Coupling with Zero Output Offset

True DC-Coupling is extremely important for accurate pulse amplification and analysis especially when different pulse lengths occur like in digital codes or transients with micro- to millisecond duration. If the amplifier is AC coupled or has a large output offset to be de-coupled by the AC setting of the oscilloscope there will be significant undershoots and baseline shifts in the measurements. Therefore� all HVA Amplifiers offer a true DC coupling and an adjustable output offset control even with the 500 MHz model.

Very Low Input Noise

Low input noise is very important for a good signal-to-noise ratio� especially when amplifying small signals. All HVA Amplifiers are optimized for minimum input noise reaching excellent values as low as 0.9 nV/√Hz.