VA1000

VA1000 is a DC-coupled low noise amplifier.The gain can be fixed,digitally programmed and continuously varied.The amplifier has high input impedance and low output impedance.Two built-in decoupling capacitors are used to minimize noise due to supply variation.A fast setting 2nd order BESSEL low pass filter will band-limit the high frequency components to maximize the signal-to-noise ratio.

There are some features of VA1000 as follows.First is DC-coupled (amplify even DC).The second is compact size (1.25''*0.8''*0.4'').Then is high input impedance (>500 kohm).Next is low output impedance (< 1 ohm @ DC).The fifth is low noise (< 50 V DC-100 kHz).The sixth is built-in analog filter (2 pole lowpass).The last one is built-in decoupling capacitors.

What comes next is the electrical specifications of VA1000.The supply voltage is from ±15 V to ±5 V.The supply current is 10 mA.The bandwidth is from 0 to 100 kHz (-3 dB).The amplification is from 0 to60 dB (fix or variable).The gain accuracy is ±0.05 dB (all settings).The input impedance is >500 kohm.The input capacitance is < 10 pF.The input range is < ±12 V.The output swing is < ±12 V (2 kohm load).The output impedance is < 1 ohm @ DC.The DC offset is < ±100 V.The DC drift is  < 50 ppm/C.The gain drift is  < 5 ppm/C.The internal noise is < 50 V RMS (DC to 100 kHz).