LA1787M Datasheet, PDF (30/54 Pages) Sanyo Semicon Device – Single-Chip Tuner IC for Car Radios

LA1787M
• 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
Fig. 11
5
AM/FM
OSC BUFFER OUT
A12078
• Figure 12 shows the type of FM first IF amplifier used in this IC. It is a differential single-stage amplifier.
330Ω
TO MIX
FM IF input
56
+
330Ω
–
53
330Ω
Specifications
Input impedance: 330 Ω
Output impedance: 330 Ω
Gain: 20 dB
Fig. 12
A12079
No. 6655-30/54