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CS3011-ISZ 数据表(PDF) 11 Page - Cirrus Logic |
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CS3011-ISZ 数据表(HTML) 11 Page - Cirrus Logic |
11 / 18 page CS3011 CS3012 DS597F6 11 The feedback capacitor C2 is required for closed- loop gains greater than 50 V/V. The capacitor intro- duces a pole and a zero in th e loop gain transfer function. This indicates that the sep aration of the pole and the zero is governed by the closed loop gain. It is required that th e ze ro falls o n the steep slo pe (–100 dB/decade) of the loop ga in plot so that there is some gain higher than 0 dB (typically 20 dB) at the ha nd-over frequency (the frequ ency at which the slope changes from – 100 dB/decade to –20 dB/decade). 50 pF 50 pF R1 R2 Vin Vo C2 Cin Cin Choose C2 so that R2 • C2 ≥ ?R1 • Cin Figure 16. Non-Inverting Gain Configuration with Compensation T 1 s z 1 ----- + – 1 s p 1 ----- + -----------------------A ol = P 1 1 2 π R 1 R 2 || ()C 2 ------------------------------------- 1 2 π R 1C2 () ------------------------- ≅ =for R 2 R 1 » Z 1 1 2 π AR 1 × ()C 2 ----------------------------------- =where A R 2 R 1 ------ = Z 1 1 2 π R 2 ()C 2 ------------------------- = |
类似零件编号 - CS3011-ISZ |
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类似说明 - CS3011-ISZ |
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