Patent ID: 8013672

Claim:
An apparatus for providing programmable gain amplification and low-pass filtering with a static cutoff frequency, comprising: a programmable gain amplifier having an embedded filter in said programmable gain amplifier, comprising: a gain element having an inverting input for receiving an input and a feedback signal, a non-inverting input coupled to ground, and an output; a first resistor coupled to the inverting input of the gain element, the input signal being directed through the first resistor then to the inverting input of the gain element; and one or more feedback loops coupling said output of said gain element to said inverting input of said gain element, each said feedback loop comprising a switch coupled in series with at least one passive component, each said switch having a first state to connect the corresponding feedback loop and a second state to disconnect the corresponding feedback loop; wherein each said switch being programmatically configurable to provide said apparatus with a first gain and a first bandwidth, and each said switch being programmatically configurable to provide said apparatus with a second gain and a second bandwidth, said first bandwidth being substantially equal to said second bandwidth; and wherein the switches being programmatically configurable to adjust gain of said apparatus without substantially affecting the bandwidth of said apparatus.