我在PSpice与LTSpice中对OPA858的开环增益进行仿真,二者的仿真结果显示增益带宽积约为3.2GHz,与datasheet中的5.5GHz不符。
LTSpice仿真结果:3.2GHz
PSpice仿真结果:3.3GHz
仿真电路:
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您好,请使用下方培训视频的方法和芯片手册的测试条件。
测试方法: https://edu.21ic.com/video/2556
测试条件: VS+ = 2.5 V, VS– = –2.5 V, VIN+ = 0 V, RF = 453 Ω, Gain = 7 V/V, RL = 200 Ω, output load referenced to midsupply, and TA = 25°C (unless otherwise noted)