Complete FM IF System for High Quality Tuners

The circuit provides a complete FM IF system for a high

quality receiver Either one or two stages of amplification

and bandpass filtering may be desired depening on the

receiver requirements See graph for Typical Limiting and

Noise Characteristics for each circuit configuration which

can be compared to the LM3189N alone

Complete FM IF System for High Quality Receivers

All resistance values are in X

CF Ceramic filters Toko CSFE or equivalent

L tunes with 100 pF (C) at 107 MHz

or equivalent)

TLH7960 – 5

Printed Circuit Board and Component Layout

TLH7960 – 6

Component Side

4