发明名称 |
OPERATIONAL AMPLIFYING CIRCUIT AND LIQUID CRYSTAL PANEL DRIVE DEVICE USING THE SAME |
摘要 |
An operational amplifier circuit includes: a first differential amplifier section containing a P-type differential pair of P-type transistors; a second differential amplifier section containing an N-type differential pair of N-type transistors; an intermediate stage connected with outputs of the first and second differential amplifier sections and containing a first current mirror circuit of P-type transistors, and a second current mirror circuit of N-type transistors; and an output stage configured to amplify an output of the intermediate stage in power. The first differential amplifier section includes a first current source and a first capacitance between sources of the P-type transistors of the P-type differential pair and a positive side power supply voltage. The second differential amplifier section includes a second current source and a second capacitance between sources of the N-type transistors of the N-type differential pair and a negative side power supply voltage.
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申请公布号 |
US2012133688(A1) |
申请公布日期 |
2012.05.31 |
申请号 |
US201113305159 |
申请日期 |
2011.11.28 |
申请人 |
SHIMOMAKI KENJI;RENESAS ELECTRONICS CORPORATION |
发明人 |
SHIMOMAKI KENJI |
分类号 |
G09G3/36;G09G5/00;G09G5/10;H03F3/45 |
主分类号 |
G09G3/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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