发明名称 |
DIFFERENTIAL AMPLIFIER CIRCUIT HAVING A DRIVER WITH SQUARE-LAW CHARACTERISTIC. |
摘要 |
A differential amplifier circuit having a superior transconductance linearity within a wider input voltage range, which includes a first differential pair of transistors and a driver circuit for driving the differential pair by its output current. This output current has a square-law characteristic to compensate in nonlinearity the transconductance of the differential pair. The driver circuit is a squarer or a quadritail circuit. A signal to be amplified is applied to a pair of input terminals. Input ends of the differential pair are connected to a pair of input terminals to be applied with a first input signal. Input ends of the driver circuit is connected to the pair of input terminals to be applied with a second input signal. The first and second input signals are proportional in amplitude to the signal to be amplified. <IMAGE> |
申请公布号 |
EP0608886(A3) |
申请公布日期 |
1994.09.28 |
申请号 |
EP19940101217 |
申请日期 |
1994.01.27 |
申请人 |
NEC CORPORATION |
发明人 |
KIMURA, KATSUJI, C/O NEC CORPORATION |
分类号 |
H03F1/32;H03F3/45 |
主分类号 |
H03F1/32 |
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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