LA1816 데이터 시트보기 (PDF) - SANYO -> Panasonic

부품명

상세내역

제조사

LA1816

Single-Chip AM/FM, MPX Tuner System for Headphone Stereos, Radio-Cassette Recorders

SANYO -> Panasonic 

LA1816, 1816M

How to use the LA1816

1. VCO stop

The VCO is stopped by shorting pin 10 and pin 8 (VCC pin).

Note) The maximum supply voltage on pin 10 must not exceed the voltage on pin 8.

2. Free-running frequency check

Either of the following two methods is used to check the free-running frequency.

(a) Connect pin 12 to a frequency counter through the high input impedance amplifier.

Figure 1

(b) Connect the connection point of the semifixed resistor connected to pin 12 and the fixed resistor to a frequency counter

through the resistor of 240 kΩ or greater.

How the error changes with the resistor value is shown in Figure 2.

∆F – RX

RX – Ω

Figure 2

3. How to use the FM DET coil

For pin 17 (FM DET), a coil may be used instead of adjustment-free FM discriminator.

1 – 3 10T

Qo = 90

f = 10.7 MHz

82 pF internal

Figure 3 How to use the FM DET coil

Figure 4 FM DET Coil Characteristics

Pin 4 (IF) input

Figure 5 FM DET Coil Characteristics

ANT input voltage – dBµ

ANT input voltage – dBµ

No.2659-5/11

Share Link: