LA1781M_09 Datasheet, PDF (26/48 Pages) Sanyo Semicon Device – For Car Radios Single-Chip Tuner IC

LA1781M
• Oscillator
Figure 11 shows the type of oscillator circuit used in this IC. It includes both an oscillator and an oscillator buffer.
VCC
18pF
4
25pF
VT
20pF
5
AM/FM
OSC BUFFER OUT
Fig. 11
• Figure 12 shows the type of FM first IF amplifier used in this IC. It is a differential single-stage amplifier.
TO MIX
330Ω
FM IF input
56
+
330Ω
--
53
330Ω
Specifications
Input impedance : 330Ω
Output impedance : 330Ω
Gain : 20dB
Fig. 12
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