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Calculates op-amp circuit gain for inverting and non-inverting configurations. Determines amplifier output voltage relationship to input.
Công thức
Bandwidth = gain-bandwidth product ÷ gain
Hướng dẫn từng bước
- 1Inverting: gain = -Rf ÷ Rin
- 2Non-inverting: gain = 1 + (Rf ÷ Rin)
- 3Bandwidth = gain-bandwidth product ÷ gain
- 4Input impedance affects signal source loading
Ví dụ có lời giải
đầu vào
Rf=10k, Ri=1k
Kết quả
Gain = -10
Lỗi thường gặp cần tránh
- ✕Forgetting negative sign for inverting configuration
- ✕Not checking gain-bandwidth product vs. requirements
Câu hỏi thường gặp
Why use non-inverting over inverting?
Non-inverting has higher input impedance, better for source impedance matching.
What limits op-amp gain?
Gain-bandwidth product: high gain reduces bandwidth; stability requires compensation.
Sẵn sàng để tính toán? Dùng thử Máy tính Op Amp Gain miễn phí
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