
Electrical Characteristics (Continued)
Note 4: Be sure when choosing the time constant R1 x C1 that R1 is such that the maximum anticipated output voltage at pin 3 can be reached with I3 x R1. The
maximum value for R1 is limited by the output resistance of pin 3 which is greater than 10 M
typically.
Note 5: Nonlinearity is defined as the deviation of VOUT (@ pin 3) for fIN = 5 kHz from a straight line defined by the VOUT @ 1 kHz and VOUT @ 10 kHz. C1 = 1000 pF,
R1 = 68k and C2 = 0.22 mFd.
Test Circuit and Waveform
DS007942-6
Tachometer Input Threshold Measurement
DS007942-7
LM2907/LM2917
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