Dual-Segment Backend

A integrated circuit, comprising:

• a front-end circuit configured to generate an input signal, wherein the front-end circuit comprises:
• a signal transducer configured to generate a transducer output based on a detected current,
• a front-end amplifier configured to produce a front-end signal based on the transducer output;
• and
• a front-end offset correction signal generator configured to produce a front-end offset correction signal,
• wherein the input signal is based on the front-end offset correction signal and the front-end signal;
• and
• a dual segment backend circuit, the dual segment backend circuit comprising:
• a first amplifier circuit comprising a first amplifier to provide an unclamped signal, wherein the first amplifier is configured to receive the input signal;
• a second amplifier circuit comprising a second amplifier and a clamping circuit to provide a clamped signal, wherein the second amplifier is configured to receive the input signal, and wherein the clamping circuit is configured to clamp an output from the second amplifier in response to the output exceeding a threshold value;
• a first offset correction signal generator configured to produce a first offset correction signal;
• a combiner circuit configured to produce a combined signal based on the unclamped signal, the clamped signal and the first offset correction signal, the combined signal having a first sensitivity for output at or below the threshold value and a second sensitivity for output exceeding the threshold value;
• and
• a backend amplifier configured to produce an output signal based on the combined signal.