A receiver to detect pulses on a home phone wiring network using envelope
detection. The receiver comprises an integrating capacitor charged by a
first current source responsive to a differential signal propagated on
the wiring network, and discharged by a FET in combination with a second
current source. The combination of the FET and the second current source
allows the capacitor to be quickly discharged in a smooth fashion. An
application of this receiver is for a PHY according to the Home Phoneline
Networking Alliance.