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Video_amplifier_dc_stabilization_summing_point_technique

2014-11-09 19:30  
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Video_amplifier_dc_stabilization_summing_point_technique
In this circuit, A2 handles high-frequency inputs while A1 stabilizes the dc operating point. The 4.7 k-220-Ω divider at the A2 input prevents excessive drive during start-up. The circuit combines the A135-μV offset and 1.5 V/℃ drift with the A2450 V/μs slew rate and 90-MHz bandwidth. Bias current, dominated by A2, is about 500 nA.