LA1136N Datasheet, PDF (24/28 Pages) Sanyo Semicon Device – AM Tuners for Car Radios and Home Stereos

LA1136N, 1136NM, 1137N, 1137NM
3 RF alignment coil
In general, the RF amplifier gain and fluctuations in the effective sensibility should be kept as low as possible.
Maximum sensitivity MS
Turns
proportional
to gain
Increase turns
Effective sensitivity QS
Check the data in the diagram to determine the number of
turns.
Number of turns
19. IF Count Buffer
Although this explanation is for the LA1137N, it is identical for the LA1136N, except that the pin numbers are different.
Circuit operations
Pin 13 serves as both the count buffer input pin and output pin. When the control voltage with no load is HIGH 5 V, the IF buffer
output is 300 mVrms and when LOW GND, 1 mVrms or lower. Supports Sanyo’s LM7000 and LC7230.
IF counter
amplifier
Reverse
circuit
IF buffer Control
voltage
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