FEMTO® Messtechnik GmbH has revised their DHPVA voltage amplifier series, resulting in two new models DHPVA-101 (DC - 100 MHz) and DHPVA-201 (DC - 200 MHz). Input voltage drift and noise are improved to an extraordinarily low level whilst maintaining a constant bandwidth at any gain setting.
Stable measurements with the highest precision are possible even at maximum amplification as they exhibit exceptionally low input voltage drift of only 0.3 µV/°C and the low input noise of 2.3 nV/√Hz. Flat frequency response without peaking was an important design requirement. The maintained bandwidth with gain permits accurate high-speed acquisition whilst preserving the signal shape independent of gain setting. The gain can be selected from 10 dB to 60dB in steps of 10 dB, corresponding to voltage gain factors from 3.16 to 1000. Input coupling can be switched between AC and DC and the bandwidth can be set to 10/20 MHz for reducing broadband noise. All parameters can be selected manually or via the LUCI-10 digital interface. This unique combination of quality features makes the DHPVA series a truly universal laboratory amplifier facilitating near perfect signal processing.
