bu2611a / bu2611af / bu2611afs audio ics pll frequency synthesizer for tuners bu2611a / bu2611af / bu2611afs the bu2611 pll frequency synthesizers work up through the fm band. they feature built-in rf amps with low power dissipation and high sensitivity. ! ! ! ! applications tuners (mini components, radio cassette players, radio equipment, etc.) ! ! ! ! features 1) built-in high-speed prescaler can divide 130mhzvco. 2) in addition to the reference fm and am, also offers the following 7 frequencies : 100khz, 50khz, 25khz, 10khz, 9khz, 5khz, and 1khz. 3) 3-bit output port (open drain). 4) clock output (400khz). 5) time base output (8hz). 6) serial data input (ce, ck, da). ! ! ! ! absolute maximum ratings (ta = 25 c) parameter symbol limits unit conditions v dd ? 0.3~ + 7.0 v v in ? 0.3~v dd + 0.3 v ce, ck, ca, xin, fmin, amin v out1 ? 0.3~ + 10.0 v p1, p2, p3, p4 v out2 ? 0.3~v dd + 0.3 v pd1, pd2 i out ma p1, p2, p3, p4 bu2611a pd mw c c 0~ + 4.0 1000 ? 1 500 ? 2 ? 25~ + 75 topr tstg ? 55~ + 125 power supply voltage maximum input voltage maximum output voltage 1 maximum output voltage 2 maximum output current power dissipation operating temperature storage temperature bu2611af/bu2611afs ? 1 reduced by 10mw for each increase in ta of 1 c over 25 c. ? 2 reduced by 5mw for each increase in ta of 1 c over 25 c. ! ! ! ! recommended operating conditions parameter symbol min. typ. max. unit 4.0 6.0 ? v v dd power supply voltage
bu2611a / bu2611af / bu2611afs audio ics ! ! ! ! block diagram shift register latch reference divider main count ck prescaler p4 xin xout fmin amin pd1 pd2 v v charge pump phase det p1 ce p2 da p3 8 79 345 v ss pd2 pd1 (n.c.) v dd fmin amin xout xin ce ck da p4 p1 p2 p3 1 (n.c.) (n.c.) (n.c.) (n.c.) 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 v ss pd2 pd1 (n.c.) v dd fmin amin xout xin ce ck da p4 p1 p2 p3 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 dd ss bu2611af bu2611a / bu2611afs ! ! ! ! pin descriptions p4 xin, xout fmin, amin ce, ck, da p1, p2, p3 v pd1, pd2 pin name functions controller clock (400khz) output x'tal oscillation (7.2mhz) local oscillation signal input data input output port power supply charge pump output
bu2611a / bu2611af / bu2611afs audio ics ! ! ! ! electrical characteristics (unless otherwise noted, ta = 25 c, v dd = 5.0v) parameter symbol min. typ. max. unit conditions i dd1 4.8 ma f in =130mhz, 100mvrms i dd2 300 a v ih 3.5 v v il 1.5 v v ol1 0.4 v p1, p2, p3, p4 i out =2.0ma i off1 1.0 a p1, p2, p3, p4 v out =10v v oh 0.25 v v ol2 0.15 v i off2 100 na i off3 ? 100 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? na f in1 7.2 mhz f in2 10 100 130 mhz f in3 0.5 20 mhz 0.08 1.5 vrms pd1, pd2 i out = ? 1.0ma pd1, pd2 i out =1.0ma pd1, pd2 v out =v dd pd1, pd2 v out =v ss f inmax. no input, pll = off ce, ck, da terminals ce, ck, da terminals xin, sine wave, c coupling fmin, sine wave, c coupling v in = 80mvrms amin, sine wave, c coupling v in = 80mvrms xin, fmin, amin, sine wave, c coupling power supply current circuit current w/o signal input high level voltage input low level voltage output low level voltage 1 off level leakage current 1 output high level voltage output low level voltage 2 off level leakage current 2 off level leakage current 3 input frequency 1 input frequency 2 input frequency 3 input amplitude ! ! ! ! data format s ck da ce t 3 t 2 t 1 t 4 t 5 d 0 d 1 d 2 d 3 d 4 r 1 r 2 internal data t 1 , t 2 , t 3 , t 4 , >1.5 s t 5 , >1.5 s (x'tal : 7.2mhz) d 0 d 1 d 2 d 3 d 4 d 5 d 6 d 7 d 8 d 9 d 10 d 11 d 12 d 13 t 0 t 1 p 0 p 1 p 2 t b r 0 r 1 r 2 s input done from d 0 . (1) division data : for d 0 through d 13 (for amn, use d 4 through d 13 ). d 13 d 12 d 11 d 10 d 9 d 8 d 7 d 6 d 5 d 4 d 3 d 2 d 1 d 0 11001010001000 xxxx0111100111 fmin frequency=1107 amin frequency=926
bu2611a / bu2611af / bu2611afs audio ics (2) test data : t 0 through t 1 are taken as (0, 0). (3) p 0 , p 1 , p 2 , p 3 , tb : port output, time base output p 0 p 1 p 2 tb p 1 p 2 p 3 0000 ??? 0010001 0100010 0110011 1000100 1010101 1100110 1110111 0001tb ?? x101tb10 x011tb01 x111tb11 1001tb00 data port output ? x tb : determined on the basis of r 0 - r 2 . : irrelevant : 8 hz (4) r 0 , r 1 , r 2 , standard frequency data r 0 r 1 r 2 p 1 p 2 p 3 0 0 0 100khz 1 1 0 0 0 1 50khz 1 1 0 0 1 0 25khz 1 1 0 0 1 1 5khz 0 0 1 1 0 0 10khz 1 0 1 1 0 1 9khz 1 0 1 1 1 0 1khz 0 1 1 1 1 1 5khz 0 0 1 data port output standard frequency (5) s : input selection data 1 : fmin 0 : amin
bu2611a / bu2611af / bu2611afs audio ics ! ! ! ! external dimensions (units : mm) bu2611a bu2611afs bu2611af 0.51min. 0.3 0.1 9 16 8 1 6.5 0.3 3.2 0.2 4.25 0.3 0.5 0.1 19.4 0.3 2.54 0 ~15 7.62 dip16 ssop-a16 sop20 0.36 0.1 0.8 0.11 6.6 0.2 4.4 0.2 6.2 0.3 1.5 0.1 1 16 8 9 0.15 0.3min. 0.15 0.1 0.4 0.1 1.27 0.3min. 0.15 0.1 0.11 1.8 0.1 5.4 0.2 7.8 0.3 12.5 0.2 1 20 11 10 0.15
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