bu2624af ROHM Co. Ltd., bu2624af Datasheet
bu2624af
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bu2624af Summary of contents
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... Audio ICs PLL frequency synthesizer for tuners BU2624AF The BU2624AF is a PLL frequency synthesizer IC designed for use in car stereos, high-fidelity audio systems, and CD radio cassettes. Featuring low current dissipation, low superfluous radiation, two frequency measurement counter systems, and two phase comparison outputs, this chip is ideal for high-performance multi-band systems. ...
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... Audio ICs FBlock diagram 162 BU2624AF ...
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... Audio ICs FPin descriptions BU2624AF 163 ...
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... Audio ICs FElectrical characteristics (unless otherwise noted 25_C, V 164 BU2624AF = 5.0V) DD ...
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... Audio ICs FCircuit operation Input data format Output data format CE output is set to LO. BU2624AF 165 ...
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... PS: If this bit is set to ON while AMIN is selected, swallow counter division is possible. (8) IFS: Selection between IF1 and IF2 during IF count 0: IF1 1: IF2 (9) GT: Frequency measurement time and unlock detection ON / OFF (10) TS: Test data (0) is input 166 (When use 15 ( BU2624AF , R , standard frequency data 2 ...
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... When control data GT equals equals 1, the un- lock detection circuit goes into operation for 8ms. When CT equals 1, the unlock detection circuits stops operating before the frequency counter gate pulse is emitted. When CT equals equals 0, the unlock detection circuit is reset. BU2624AF 167 ...
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... When and Only unlock detection is carried out. Explanation of CD terminal When frequency measurement or unlock detection is fin- ished, the CD terminal goes indicate that the count and unlock detection have finished. It also synchronizes with CK to output counter data. When the next data is input, it goes to HI. 168 BU2624AF ...
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... Audio ICs FExternal dimensions (Units: mm) BU2624AF 169 ...