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LF355 Datasheet(PDF) 20 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LF355
Description  JFET Input Operational Amplifiers
PDF  23 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LF355 Datasheet(HTML) 20 Page - National Semiconductor (TI)

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Typical Applications (Continued)
High Accuracy Sample and Hold
00564627
•
By closing the loop through A2, the V
OUT accuracy will be determined uniquely by A1.
No V
OS adjust required for A2.
•
T
A can be estimated by same considerations as previously but, because of the added
propagation delay in the feedback loop (A2) the overshoot is not negligible.
•
Overall system slower than fast sample and hold
•
R1, C
C: additional compensation
•
Use LF156 for
j Fast settling time
j Low VOS
High Q Band Pass Filter
00564628
•
By adding positive feedback (R2)
•
Q increases to 40
•
f
BP = 100 kHz
•
Clean layout recommended
•
Response to a 1Vp-p tone burst: 300µs
www.national.com
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