Methods and apparatus for reducing noise, power and settling time in multi-modal analog multiplexed data acquisition systems
Reduced noise and power with rapid settling time and increased performance in multi-modal analog multiplexed data acquisition systems. An example apparatus arrangement includes a circuit input configured to receive a plurality of analog input signals; an analog to digital converter circuit configured to output a digital representation of an analog voltage; a selection circuit configured to select one of the analog input signals received at the circuit input; a buffer coupled to receive the selected one of the analog input signals; a filter coupled to the buffer and configured to perform a high bandwidth sample operation and a low bandwidth sample operation and having a filter output, responsive to a control signal; and a sampling capacitor coupled to the filter to sample the filter output, and having an output coupled to the analog to digital converter. Methods and additional apparatus arrangements are disclosed.
TEXAS INSTRUMENTS INCORPORATED
H H H
H04B H04B H04B
inventional additional inventional
Srinath Ajit Arup Seung Bae Sriram
Ramaswamy Sharma Polley Lee Narayanan