Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting input voltage to output current or vice versa
Reexamination Certificate
2006-07-11
2010-06-15
Lam, Tuan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Converting input voltage to output current or vice versa
C327S538000, C327S541000
Reexamination Certificate
active
07737733
ABSTRACT:
A current-voltage conversion circuit which converts a current to be detected into a voltage, includes a detection resistor, amplifier circuit having a first operational amplifier, and an offset adjusting current source having a third resistor and a fourth resistor which are capable of trimming. The offset adjusting current source causes an offset adjustment current to flow in the offset resistor. The current value of the offset adjustment current is controlled by adjusting the resistance of the third resistor and the fourth resistor. A voltage at a node between the first transistor and the second resistor is output.
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International Search Report for International Application No. PCT/JP2006-313792 mailed Oct. 17, 2006.
Written Opinion of the International Searching Authority for PCT/JP2006-313792 mailed Oct. 17, 2006.
Shibata Yutaka
Yokomizo Ichiro
Cantor & Colburn LLP
Lam Tuan
Rohm & Co., Ltd.
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