US 12,695,649 B2 · Fully-differential receiver for receiving conducted communication signals

Abstract

Disclosed herein is an IMD configured to communicate with another IMD and/or an external device using conducted communication. The fully-differential receiver has a pair of inputs, a pair of outputs, and a plurality of active stages therebetween. The pair of inputs of the fully-differential receiver are coupled to electrodes of the IMD. The fully-differential receiver is configured to operate in first and second modes. When operating in the first mode, the fully-differential receiver draws a first amount of current and is configured to monitor for a wakeup signal within a first frequency range. When operating in the second mode, the fully-differential receiver draws a second amount of current that is higher than the first amount of current, and is configured to receive one or more message content pulses within a second frequency range that is higher than the first frequency range.

Claims22

Dependent claims

An implantable medical device (IMD) configured to communicate with at least one of another IMD or an external device using conducted communication signals, the IMD comprising:

a first electrode;
a second electrode;
a fully-differential receiver having a pair of inputs, a pair of outputs, and a plurality of active stages between the pair of inputs and the pair of outputs;
and
a battery configured to power components of the IMD, including the plurality of active stages of the fully-differential receiver;
the pair of inputs of the fully-differential receiver including a first input coupled to the first electrode and a second input coupled to the second electrode;
the fully-differential receiver configured to operate in a first mode when the active stages thereof are provided with respective first bias currents, and the fully-differential receiver configured to operate in a second mode when the active stages thereof are provided with respective second bias currents that are greater than the respective first bias currents;
when operating in the first mode, the fully-differential receiver draws a first amount of current;
and
when operating in the second mode, the fully-differential receiver draws a second amount of current that is higher than the first amount of current.

7 more elements

An implantable medical device (IMD) configured to communicate with at least one of another IMD or an external device using conducted communication signals, the IMD comprising:

a pair of electrodes;
a fully-differential receiver having a pair of inputs, a pair of outputs, and a plurality of active stages between the pair of inputs and the pair of outputs;
and
a battery configured to power components of the IMD, including the plurality of active stages of the fully-differential receiver;
the pair of inputs of the fully-differential receiver coupled to the pair of electrodes;
the plurality of active stages of the fully-differential receiver including a fully-differential preamplifier, a fully-differential buffer, a first comparator, and a second comparator;
the fully-differential receiver configured to operate in a first mode when the fully-differential preamplifier, the fully-differential buffer, the first comparator, and the second comparator are provided with respective first bias currents;
and
the fully-differential receiver configured to operate in a second mode when the fully-differential preamplifier, the fully-differential buffer, the first comparator, and the second comparator are provided with respective second bias currents that are greater than the respective first bias currents.

6 more elements

Dependencies are inferred from the claim text.

Fully-differential receiver for receiving conducted communication signals

Life of this patent

Fully-differential receiver for receiving conducted communication signals

Life of this patent

Abstract

Claims22