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LV25400W Datasheet(PDF) 33 Page - Sanyo Semicon Device |
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LV25400W Datasheet(HTML) 33 Page - Sanyo Semicon Device |
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33 / 42 page  LV25400W No.A0633-33/42 Continued from preceding page. No. Control block/data Description Related data (8) PLL filter switching mode MODE • Switches the PLL filter PLL filter switching Filter state MODE AM/FM AM filter FM filter 0 OFF ON Normal 0 1 ON OFF 0 W-FILTER 1 1 ON ON Normal mode (MODE = 0) The filter state is switched in conjunction with the AM/FM bit. FM mode (AM/FM = 0) A filter is formed on pins 8 and 11. Since this filter can be independent of the filter used in AM mode, PLL locking can be fast. AM mode (AM/FM = 1) A filter is formed on pins 9 and 10 and with the two internal switches SW1 and SW2. An additional filter is added using an internal resistor and an external capacitor. W-filter mode (MODE = 1) Both filters are enabled, regardless of the AM/FM bit. (All of pins 8, 9, 10, and 11, and switches SW1 and SW2 are used.) This is used when sidebands occur in AM mode, and in other cases. However, there are case where, depending on the particular filter component values, this mode cannot be used. AM/FM (9) IC internal signals I/O ports Control data • Specifies the I/O direction for the I/O ports Data = 0 : Input port. The value 0 should be specified in normal operation. = 1 : Output port. A value of 1 is used for IC testing. * : This data must be set to 0 at all times other than IC evaluation. Normally set to 0. (10) Crystal oscillator fine adjustment X_SW_0 X_SW_1 X_SW_2 • Adjusts the crystal 4.5 MHz reference frequency if beating occurs X’tal OSC ADJ [When a 4.5MHz oscillator element is used] 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1 Xtal (Center value) ↓ ↓ ↓ ↓ ↓ ↓ +150Hz XS0, XS1 R0 to R3 Continued on next page. C7 0.033 µF C10A 1 µF C11A 0.033 µF C11B 2200pF C12 2.2k Ω 1k Ω CP1 VDD PIN23 +8V PIN58 div 5k Ω 3k Ω SW2 C11 1.3k Ω D5 SVC704 C4 3pF C3 2pF L5 SW3 SW1 FM OSC R7 30k Ω C4 330pF 3 4 5 6 8 7 9 10 11 |
Similar Part No. - LV25400W_10 |
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Similar Description - LV25400W_10 |
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