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LA1816 Datasheet(PDF) 5 Page - Sanyo Semicon Device |
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LA1816 Datasheet(HTML) 5 Page - Sanyo Semicon Device |
5 / 11 page 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. (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 k Ω or greater. How the error changes with the resistor value is shown in 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. Figure 1 Figure 2 ∆F–R X RX – Ω 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 ANT input voltage – dBµ Figure 5 FM DET Coil Characteristics ANT input voltage – dBµ Pin 4 (IF) input LA1816, 1816M No.2659-5/11 |
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Similar Description - LA1816 |
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