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LM346 Datasheet(PDF) 16 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM346
Description  LM146/LM346 Programmable Quad Operational Amplifiers
PDF  24 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM346 Datasheet(HTML) 16 Page - National Semiconductor (TI)

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LM146, LM346
SNOSBH5B – MAY 2004 – REVISED SEPTEMBER 2004
www.ti.com
Ex: fc = 20 kHz, Ho (gain of the filter) = 1, Q01 = 0.541, Qo2 = 1.306.
•Since for this filter the GBW product of all 4 amplifiers has been designed to be the same (
∼1 MHz) only one current
source can be used to bias the circuit. Fine tuning can be further accomplished through Rb.
Figure 38. A 4th Order Butterworth Low Pass Capacitorless Filter
Miscellaneous Applications
• For better performance, use a matched NPN pair.
Figure 39. A Unity Gain Follower with Bias Current Reduction
16
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Copyright © 2004, Texas Instruments Incorporated
Product Folder Links: LM146 LM346



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