CURRENT DETECTION CIRCUIT
PROBLEM TO BE SOLVED: To provide a current detection circuit capable of suppressing occurrence of large potential difference between input terminals of a differential amplifier circuit, and preventing deterioration of an input transistor.SOLUTION: A differential amplifier circuit employs, as input t...
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| Format: | Patent |
| Sprache: | eng ; jpn |
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a current detection circuit capable of suppressing occurrence of large potential difference between input terminals of a differential amplifier circuit, and preventing deterioration of an input transistor.SOLUTION: A differential amplifier circuit employs, as input terminals, sources of a pair of PMOS transistors in which a bulk and a source are connected, and includes a clamp circuit for restricting voltage between a gate and the source of the pair of PMOS transistors.SELECTED DRAWING: Figure 2
【課題】差動増幅回路の入力端子間に大きな電位差が発生することを抑制し、入力トランジスタの劣化を防止することができる電流検出回路を提供すること。【解決手段】差動増幅回路は、バルクとソースが接続された一対のＰＭＯＳトランジスタのソースを入力端子とし、一対のＰＭＯＳトランジスタのゲート−ソース間電圧を制限する為のクランプ回路を備える。【選択図】図２ |
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