DA200

The primary function of our DA200 distribution amplifier is to distribute an existing signal to multiple points while preserving its integrity. The DA200 is ideal for situations requiring a low noise RF signal to be supplied to multiple usage points.

The DA200 has one input channel and five output channels. It may be configured with either SMA or BNC connectors. The input is AC-coupled and has a 50 Ω source impedance. It includes a limiter circuit that not only provides a fixed output level but also offers high input gain. This design allows the amplifier to maintain the specified output power across a wide range of input power levels.

The input limiter is followed by two amplifier/low-pass filter stages, which ensure low-distortion sine wave outputs. The outputs from the filter stages are passed through a 2 dB pad to ensure a matched 50 Ω output impedance. This configuration achieves phase offset from the input to any output less than 5 ns at 10 MHz. .

For larger systems requiring more outputs, multiple amplifiers may be daisy-chained together by connecting the output of channel five to the input of another distribution amplifier. However, this configuration increases phase offset of the zero crossings between amplifiers. If channel-to-channel phase offset between zero crossings is a concern, the recommended configuration would be to use a single amplifier to drive up to five additional amplifiers. This will provide up to 25 outputs with minimal channel-to-channel phase offset at the zero crossings.