公开(公告)号：US06437651B1

公开(公告)日：2002-08-20

申请号：US09821576

申请日：2001-03-29

申请人： Hirokazu Chigira ,  Masao Okumura ,  Tatsuro Koyanagi ,  Naoshi Mashimo ,  Tomoyuki Saito ,  Mitsuo Osawa ,  Nobukazu Hayakawa ,  Kouki Kubo

发明人： Hirokazu Chigira ,  Masao Okumura ,  Tatsuro Koyanagi ,  Naoshi Mashimo ,  Tomoyuki Saito ,  Mitsuo Osawa ,  Nobukazu Hayakawa ,  Kouki Kubo

IPC分类号： H03B104

摘要： An electric potential of an epitaxial layer 2A provided under a bonding pad 5 to which a resonance circuit for a VCO is to be connected is fixed to a predetermined (Vcc) electric potential through a resistor 6 in a conventional floating state. Consequently, a speed of a change in the electric potential of the epitaxial layer 2A is increased and a value of a parasitic capacity is stabilized quickly. Consequently, a drift can be improved when a power supply is turned ON.