{TAIL ~ The control circuit} includes a first section for generating a control current and a pair of current mirror sections that divide the control current, generating a pair of differential control signal components as VGS potentials of a pair of {HEAD ~ CMOS transistors} configured as current mirrors 
{ TAIL ~ The control circuit } includes a first section for generating a control current and a pair of current mirror sections that divide the control current , generating a pair of differential control signal components as VGS potentials of a pair of { HEAD ~ CMOS transistors } configured as current mirrors
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