LM149 National Semiconductor, LM149 Datasheet - Page 7

• Manufacturer Part Number: LM149
• Description: Quad 741 Op Amps LM149 Wide Band Decompensated (AV MIN = 5)
• Manufacturer: National Semiconductor

Typical Applications — LM148
One Decade Low Distortion Sinewave Generator
DS007786-8
= 5 kHz, THD
f
0.03%
MAX
R1 = 100k pot. C1 = 0.0047 µF, C2 = 0.01 µF, C3 = 0.1 µF, R2 = R6 = R7 = 1M,
R3 = 5.1k, R4 = 12 , R5 = 240 , Q = NS5102, D1 = 1N914, D2 = 3.6V avalanche
=
±
diode (ex. LM103), V
15V
S
A simpler version with some distortion degradation at high frequencies can be made by using A1 as a simple inverting amplifier, and by putting back to back
zeners in the feedback loop of A3.
Low Cost Instrumentation Amplifier
DS007786-9
±
=
V
15V
S
R = R2, trim R2 to boost CMRR
7
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