Tunneling current circuit

A tunneling current circuit of a differential amplifier, consisting of;

• a MOS transistor pair, whose sources are commonly connected,
• load(s), connected to at least one of drains of said transistor pair,
• and signal(s) and bias(es), connected to gates of said transistor pair, wherein a tunneling current device, which connected between said sources and a positive or negative voltage supply.

A tunneling current circuit of a differential amplifier consisting of;

• a MOS transistor pair, whose sources are commonly connected to substantial current source,
• load(s), connected to at least one of drains of said transistor pair,
• and signal(s) and bias(es), connected to gates of said transistor pair, wherein said transistor pair's back gates commonly connected to approximate same electric potential as at least one of said gates to reduce tunneling current between said gates and said back gates.

(canceled)

A tunneling current circuit including a forward-biased MOS transistor,

• whose back gate is connected to output of a voltage follower circuit of said transistor's gate, having approximate same electric potential as gate of said transistor to reduce tunnel current flowing between said gate and said back gate.

A tunneling current circuit including a first forward-biased MOS transistor,

• whose back gate is connected to a electric potential of said first MOS transistor's source electric potential added by a voltage between gate and source of a second forward-biased MOS transistor, having approximate same electric potential as gate of said first MOS transistor to reduce tunnel current flowing between said gate and said back gate of said first MOS transistor.

(canceled)

A band gap reference circuit which outputs a summing voltage of a proportional voltage of differential voltage between semiconductor PN junctions flowing currents at different current densities, and a proportional voltage of a forward-biased semiconductor PN junction,

• wherein a first tunneling current device forced by said differential voltage,
• a second tunneling current device or a serial circuit of second plural tunneling current devices,
• and a mean which flows proportional current of current flowing through said first tunneling device to said second tunneling current device(s) to generate said “proportional voltage of differential voltage”.