A down-conversion filter is provided, using first and second input terminals to receive signals that are differentially outputted by a preceding circuit, and using an output terminal to output a down-converted and filtered signal. An output capacitor is coupled to the output terminal. A first switched-capacitor network is arranged between the first input terminal and the output terminal. A second switched-capacitor network is arranged between the second input terminal and the output terminal. Each switched-capacitor network has capacitors, charging switches and charge-summing switches. The charging switches are designed to alternatively couple the capacitors to the first (or second) input terminal. The charge-summing switches are designed to couple the capacitors to the output terminal.