LM148QML

SNOSAH3A – FEBRUARY 2005 – REVISED MARCH 2013

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Typical Applications—LM148

R1 = 100k pot. C1 = 0.0047

μF, C2 = 0.01 μF, C3 = 0.1 μF, R2 = R6 = R7 = 1M,

R3 = 5.1k, R4 = 12

Ω, R5 = 240Ω, Q = NS5102, D1 = 1N914, D2 = 3.6V avalanche

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.

Figure 21. One Decade Low Distortion Sinewave Generator

R = R2, trim R2 to boost CMRR

Figure 22. Low Cost Instrumentation Amplifier

10

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