A differential transimpedance amplifier circuit comprises first, second,
third and fourth operational amplifiers having a first inverting input, a
first non-inverting input, a first inverting output and a first
non-inverting output. A first feedback element communicates with the
second non-inverting input and the second inverting output. A second
feedback element communicates with the second inverting input and the
second non-inverting output. A third feedback element communicates with
the third non-inverting input and the first inverting output. A fourth
feedback element communicates with the third inverting input and the
first non-inverting output. A fifth feedback element communicates with
the fourth inverting input and the first inverting output. A sixth
feedback element communicates with the fourth non-inverting output and
the first non-inverting output.