A simple way to estimate delta sigma parameters of number of bits and oversampling rate etc. is presented in this brief paper on the Signal Processing Group Inc., website. Please visit and check under the ” complementary” menu item.

The bridged T attenuator was described in an earlier post. This calculator can be used to calculate the resistor values for it quickly and efficiently. Please visit the Signal Processing Group Inc., website and the “complementary” menu and find the calculator.

The bridged T attenuator is another simple attenuator with some advantages such as simplicity of implementation and control of attenuation levels by simply changing a resistor value or making it continuously variable. Please visit the Signal Processing Group Inc. website and click on the “complementary” menu item and select the bridged T attenuator topic to read more about this attenuator.

The resistors for pi type asymmetric attenuators can be calculated using the javascript calculator available in the Signal Processing Group Inc., website under the complementary menu item. Please visit the website for the calculators and more technical information.

As mentioned in a prior post the pi attenuator can also be used in an asymmetric configuration where the I/O impedances are quite different. In this case we need to use the asymmetric form of the attenuator. Please visit the Signal Processing Inc. website and look up the information on the asymmetric pi pad ( attenuator) under the complementary menu item.