BH2615S audio ics electronic tuning pll frequency synthesizer BH2615S the BH2615S is a pll frequency synthesizer, featuring low radiation and low power consumption. it includes high sensitive rf amplifier and supports if count function. z features 1) low voltage operation (2.7v~) 2) high speed prescaler capable of direct dividing vco (130mh z ) frequency. 3) low radiation (xtal osc 75kh z ) 4) low supply current (pll on:5ma, pll off:300 a, typ. v dd =3.0v). 5) reference frequency : 25, 12.5, 6.25, 3.125, 5, 3, 1kh z 6) on chip if frequency counter. 7) unlock detector 8) output port : 7 ports (open drain output) 9) data input : serial input (ce. ck. da) z absolute maximum ratings (ta = 25 c) parameter symbol condition limits v dd i out v v v v v ma maximum supply voltage maximum output current ? 0.3 + 7.0 ? 0.3 + 7.0 ? 0.3 10.0 ? 0.3 v dd + 0.3 ? 0.3 v dd + 0.3 v dd 1 ,v dd2 ce,ck,da xin,fm in ,am in ,if in p 0 ,p 1 ,p 2 ,p 3 ,p 4 ,p 5 ,cd p 0 ,p 1 ,p 2 ,p 3 ,p 4 ,p 5 ,cd pd 1 ,pd 2 ,p 5 ,xout 0 3.0 unit maximum input voltage 1 maximum input voltage 2 maximum output voltage 1 maximum output voltage 2 v in 1 v in2 v out2 v out1 p d topr mw c allowable power dissipation operating temperature tstg c storage temperature ? 55 + 125 ? 10 + 75 600 ? derating is done at 6.0mw c for operating above ta=25 c. ? z recommended operating conditions (ta = 25 c) parameter symbol v dd1 = v dd2 2.7 ? 3.6 v min. typ. max. unit operating supply voltage www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
BH2615S audio ics z block diagram p5 unlock prescaler main count 20bit count if count ctl reference divider shift register latch phase det i/o ctl buffer 21 2 1 4 5 6 14 12 17 16 7 8 9 15 10 11 13 15 22 19 z pin assigment 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 xout v ss p d1 (nc) v dd1 v dd2 fm in am in p2 ifin p6 pd2/p5 xin (nc) ce ck da cd p 0 p 1 p 3 p 4 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
BH2615S audio ics z pin descriptions pin no. 1 2 3 4 5 6 3-state 3-state 7 8 9 10 11 12 13 14 15 16 17 18 19 20 symbol xout xin nc ce ck da cd p 0 p 1 p 3 p 4 p 5 / p d2 p 6 if in p 2 am in fm in v dd2 v dd1 nc p d1 v ss out in in in in in nch open drain nch open drain nch open drain crystal resonator (75khz) is connected. if count data , unlock data output. controlled by input serial data. if frequency input. controlled by input serial data. input am local osc. input fm local osc. supply voltage 2.7 3.6v supply voltage 2.7 3.6v if local osc freq, divided by n is higher than reference freq, "h". lower, "l" and same, (floating). ? selected input controlled data. functions i / o 22 21 "h" level are input during da and ck. data is synchronized this clock. serial data transfered from controller. pin name xtal osc count data output port output port am input fm input power supply2 power supply1 non contact charge pump ground if input non contact chip enable clock serial data www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
BH2615S audio ics z electrical characteristics (unless otherwise specified, ta = 25 c, v dd1 = v dd2 = 3.0v, v ss = 0.0v) parameter symbol min. typ. max. unit conditions supply current 1 i dd1 ? 2.8 5.0 ma ? ? ? 0.7 1.5 ma ? ?? ?? ? ? ? ? ? ? ? ?? ?? ? ? ? ? ? ? ? ?? ? ? ? ? 0.3 0.8v dd1 0.2v dd1 1.0 1.0 0.3 51015 3 6 ? 1.0 ? 0.7 ? 0.3 1.0 500 500 ? 5 ? 10 ? 15 1.0 0.2 0.5 0.1 0.5 12 0.7 ma a a a a a a a a ns ns v v kh z mvrms mh z mvrms mh z mvrms mh z mvrms mh z mvrms i dd2 i dd3 v ih v il i il1 i il2 i il3 v ol1 i off1 100 10 75 20 0.4 900 16 900 30 900 5.0 900 130 900 160 20 20 40 5.0 20 0.4 v ol2 tr tw tf f in1 f in2 f in3 f in4 f in5 i ih1 i ih2 i ih3 i ih4 supply current 2 input "h" level voltage input "l" level voltage input "h" level current 1 input "h" level current 2 input "h" level current 3 input "l" level current 1 input "l" level current 2 input "l" level current 3 output "l" level voltage 1 output "l" level voltage 2 output "off" leak current 1 on chip feedback resistance 1 on chip feedback resistance 2 input "h" level current 4 supply current 3 fm in = 130mh z , 50mvrms, v dd1 +v dd2 current am in = 1.0mh z , 50mvrms, v dd1 +v dd2 current pll = off ce,ck,da pins ce,ck,da pins ce,ck,da i o = 1.0ma p 0 ,p 1 ,p 2 ,p 3 ,p 4 ,p 6 ,cd, v o = 10v p 0 ,p 1 ,p 2 ,p 3 ,p 4 ,p 6 ,cd, ce,ck,da 3.8 10 16 300 500 1000 ? k ? r f1 r f2 input frequency input level 1 input frequency input level 2 input frequency input level 3 input frequency input level 4 input frequency input level 5 xin fm in ,am in ,if in i out = 0.1ma fm in ,am in ,if in , xin,sine wave, c ? coupling fm in ,sine wave, c ? coupling am in ,sine wave, c ? coupling am in ,sine wave, c ? coupling if in ,sine wave, c ? coupling ce,ck,da pins, v in = v dd1 xin pin, v in = v dd1 fm in ,am in pins, v in = v dd2 if in pin, v in = v dd1 ce,ck,da pins, v in = v ss xin pin, v in = v ss minimum pulse width input rase time input fall time s ck,da fm in ,am in ,if in pins, v in = v ss ? ? ? 100 0.2 1.0 100 na na v v ? 1.0 v dd1 ? 0.3 v dd1 v oh v ol i off2 i off3 output "h" level voltage output "l" level voltage output "off" leak current 2 output "off" leak current 3 i out =? 1.0ma p d1 ,p d2 ,p 5 , i out = 1.0ma p d1 ,p d2 ,p 5 , p d1 ,p d2 , v out = v dd1 p d1 ,p d2 , v out = v ss not designed for radiation resistance. www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
BH2615S audio ics z circuit operation input data format output data format ce = "l0" level ck t 1 t 2 t 3 t 1 t 2 t 4 t 5 da ck cd ce internal data input from d 0 t 1 15 sec. t 1 , t 2 > 1 sec. output : pulled up 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 d 14 d 15 t 5 < 15 sec. t 2 , t 3 > 1 sec. t 4 > 0 sec. p 0 p 1 p 2 p 3 p 4 p 5 p 6 ct r 0 r 1 r 2 spschgtts c 0 c 0 c 1 c 1 c 2 c 2 c 3 c 3 c 4 c 4 c 5 c 6 c 7 c 8 c 9 c 10 c 11 c 12 c 13 c 14 c 15 output from c 0 ? output data enable , only ct = 1 or gt = 1. c 16 c 17 c 18 c 19 u 0 u 1 u 1 u 2 u 2 u 3 u 3 d 0 d 1 d 2 d 3 gt ch ts www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
BH2615S audio ics structure of control data 1) division ratio data : d 0 ~d 15 d 0 0110 0100 1010 0111 0100 0010 1001 0000 0000 1100 example : division = 1100 (d) = 1100 2 = 550 (d) = 226 (h) 1100 division = 1107 (d) = 453 (h) division = 926 (d) = 39e (h) s=0,ps=0 s=1,ps=1 s=1,ps=0 division is twice the set point d 1 d 2 d 3 d 5 d 6 d 7 d 8 d 9 d 10 d 11 d 12 d 13 d 14 d 15 d 4 2) ct : if counter on off 1 : start 0 : counter is reset, if in pulldown. 3) output port control data : p 0 , p 1 , p 2 , p 3 , p 4 , p 5 , p 6 1 : nch open drain output on (p 5 =l0) 0 : nch open drain output off (p 5 =hi) 4) r 0 , r 1 , r 2 , reference frequency data. r 0 reference frequency data 0 0 25kh z 12.5kh z 6.25kh z 00 0 1 01 0 r 1 r 2 5kh z 01 1 3.125kh z 10 0 3kh z 10 1 1kh z 11 0 ? pll off ? fm in = pull down, am in = pull down, pd = floating 11 1 5) s : fm in , am in select data 0 : fm in 1 : am in 6) ps : pre scaler on with s=1 7) gt : if count or unlock on / off ct if counter output data unlock detector 0 0 off off off on ok ng on on on gate time = 16msec. on gate time = 32msec. 01 10 gt 11 8) ts : test data input ?0?. www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
BH2615S audio ics if counter 1) composition ck if in ce cd 20bit count shift reg gate pulse 16m/32msec. gt ct reset 2) operation of if detection circuit ct=1, if counter start. ct = 0, if count circuit reset. gt=0, gate time=16msec. gt=1, gate time=32msec. 3) output data c 0 : lsb c 19 : msb operation of unlock detector gt=1 or ct=1, unlock detector start during 8msec. ct=1, unlock detector start before gate pulse of if counter. ct=0 gt=0, if counter and unlock detector. unlock detection ct = gt = 0 1msec. t1 < 2msec. 8msec. t1 ce ct,gt = 1 err u(n) operation structure output u0 0 1 1 1 1 u1 0 0 1 1 1 u2 0 0 0 1 1 u3 0 0 0 0 1 7 sec. 13 sec. 26 sec. 54 sec. 7 sec. 13 sec. 26 sec. 54 sec. < < < < < < < < err err err err err www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
BH2615S audio ics operation of if counter and unlock detector. 1) ct=1 : if count and unlock detector. ce input control data ct gate pulse count data cd (internal) 15 sec. 8msec. if count unlock detection 16m / 32msec. 1msec. t1 < 2msec. t2=4msec. 30 sec. t1 t2 2) ct=0 gt=1 : unlock detection only. ce input control data ct=0 gt=1 gate pulse count data cd pin (internal) 15 sec. 8msec. unlock detection 1msec. t1 < 2msec. 30 sec. t1 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
BH2615S audio ics structure cd pin cd pin becomes ?l0? after finishing if count or unlock detection operation. output data synchronized ck. ce ct ck gate pulse cd pin z external dimensions (units : mm) sdip22 3.95 0.3 0.51min. 19.4 0.3 3.4 0.2 0.5 0.1 6.5 0.3 1 11 12 22 0.3 0.1 0 ~ 15 1.778 7.62 www.datasheet www.datasheet www.datasheet www.datasheet 4u 4u4u 4u .com .com .com .com 4 .com u datasheet
|
