The post-amp circuit elevates the noise floor for the device under test (DUT). If you short the inputs of the DUT to ground, what appears at the input of the post-amp circuit is the noise density of the DUT. (The gain of the noise amplifier is set by resi
Figure 2. The post-amp circuit elevates the noise floor for the device under test (DUT). If you short the inputs of the DUT to ground, what appears at the input of the post-amp circuit is the noise density of the DUT. (The gain of the noise amplifier is set by resi