This document discusses, among other things, an apparatus and method for
receiving respiration information of a patient and for providing a
stimulation to the patient using a hybrid circuit. The hybrid circuit
includes a control input for receiving a control signal having a first
and second state. A sense switch of the hybrid circuit can provide
respiration information from a pyro/piezoelectric film sleep sensor and
stimulator to a closed loop neuromodulator in response to the first
state. A stimulation switch of the hybrid circuit can provide stimulation
energy from the closed loop neuromodulator to the pyro/piezoelectric film
sensor and stimulator in response to the second state. The hybrid circuit
can couple to the pyro/piezoelectric film sensor and stimulator using a
single wire pair.