TAN-325 2002-02-14 1 tentative data audio ic application circuit TAN-325 example of 3-v fm radio circuit ta2159f 1. outline this is an application example of an fm radio circuit targeting compact sets. the ta2159f is a single-chip tuner ic which is integrated an fm front-end, fm if amp detector, stereo decoder, pll circuit, and auto-seek circuit. 2. ratings characteristic rating unit supply voltage 3 v current dissipation (quiescent) 17 ma signal frequency range 87.5~108 mhz intermediate frequency 10.7 mhz sensitivity 15.5 (s/n 30db) db v emf main con. l fm tuner pll stereo dec. display r ta2159f preliminar y
TAN-325 2002-02-14 2 3. usage precautions ta2159f (1) the ta2159f supports two control bus formats: 3-bus and uart. (for details, refer to the ta2159f technical data sheet.) in the application printed circuit board, in uart format, a block using max212 as the pc interface is added. tuner control software in uart format is available on cd-rom. circuit diagram 12 7 9 10 8 max212 (maxim japan) 13 18 19 20 16 15 14 22 23 24 470 11 5 4 3 470 6 1 3.3 k 26 25 data (d out ) rw (d in ) control switch h : on l : off 0.33 f * : sumida electric * cr43-150 interface block 1 2 3 4 5 7 6 8 9 21 0.33 f 17 2 0.68 f 1ss193 1ss193 * : use rs232c straight cable.
TAN-325 2002-02-14 3 application circuit transmission mode specifications: bus dis (pin 10) low 4.7 f 64 63 62 61 60 59 58 56 55 54 53 52 51 50 49 1 2 3 4 5 6 7 14 15 16 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 57 2700 pf gnd 2700 pf 30 k kv1770 30 k 2700 pf 5 pf kv1770 15 k 2700 pf 470 0.033 f 0.01 f dt261: 75 khz 0.015 f 390 pf 560 0.015 f 0.1 f 330 sfe10.7ma5 0.022 f 3.3 k 0.1 f 4.7 f l-ch r-ch 4.7 f cda10.7 gnd 100 f 3 v 10 k 0.01 f 4.7 f 1 k 3.3 k 470 cloc data (d out ) rw (d in ) 470 470 3.3 k 200 2 k 390 10 f 0.1 f 0.01 f 1 k 0.01 f 22 k 3.3 k bpf ant rf in rf gnd rf out rf v cc frame frame fm osc osc out st led if req det out mpx in lpf1 lpf2 lch-out rch-out quod frame frame agc gnd fm if v cc mix out gnd xi xo reset frame frame clock/scan data (d out ) rw (d in ) tuner power do v dd fm in gnd if in sleep nc frame if count test1 a rea bus dis up key uart/3bus v dd beep mono/st mute test2 0.033 f ta2159f 0.022 f nc nc nc frame nc nc nc nc nc nc nc 0.033 f 3.3 k 47 f 10 k 0.1 f 0.01 f gfwb7 15 k power on l power off open if count on: open off: l v t power supply if main v dd is high, connect a bus pull-up resistor to the main microcontroller. 8 9 10 11 12 13 uart h (need pullup resistor) 3bus l jp japan high eur. and u.s.a. low 10 m 100 k 18 pf 22 pf example example
TAN-325 2002-02-14 4 application circuit no-transmission mode specifications: bus dis (pin 10) high 4.7 f 64 63 62 61 60 59 58 56 55 54 53 52 51 50 49 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 57 2700 pf gnd 2700 pf 30 k kv1770 30 k 2700 pf 5 pf kv1770 15 k 2700 pf 470 0.033 f 0.01 f 0.015 f 390 pf 560 0.015 f 0.1 f 330 sfe10.7ma5 0.022 f 3.3 k 0.1 f 4.7 f l-ch r-ch 4.7 f cda10.7 gnd 100 f 3 v 10 k 0.01 f 4.7 f 1 k 200 2 k 390 10 f 0.1 f 0.01 f 1 k 0.01 f 22 k 3.3 k bpf ant rf in rf gnd rf out rf v cc frame frame fm osc osc out st led if req det out mpx in lpf1 lpf2 lch-out rch-out quod frame frame agc gnd fm if v cc mix out gnd xi xo reset frame frame clock/scan data (d out ) rw (d in ) tuner power do v dd fm in gnd if in sleep nc frame if count test1 a rea bus dis up key tel key v dd beep tel/radio mute test2 0.033 f ta2159f 0.022 f nc nc nc frame nc nc nc nc nc nc nc 0.033 f 3.3 k 47 f 10 k 0.1 f 0.01 f gfwb7 15 k 60 k power on l power off open if count on: open off: l radio h tel l v t power supply japan high eur. and u.s.a. low jp dt261: 75 khz 10 m 100 k 18 pf 22 pf example example
TAN-325 2002-02-14 5 coil specifications (1) wide v t range turns coil no. test freq l ( h) co (pf) qo 1-2 2-3 1-3 1-4 4-6 wire (mm ) reference l 1 fm rf 100 mhz 79 2 1 2 0.16uew toko co., ltd. 666snf-305nk l 2 fm osc 100 mhz 76 2 0.16uew toko co., ltd. 666snf-306nk (2) narrow v t range for eur. and u.s.a. band. turns coil no. test freq l ( h) co (pf) qo 1-2 2-3 1-3 1-4 4-6 wire (mm ) reference l 1 fm rf 100 mh 33.4 61 3 0.09 2uew toko co., ltd. 657an-1609 l 2 fm osc 100 mh 40.2 67 3 0.08 2uew toko co., ltd. 657an-1608 (3) narrow v t range for japan band. turns coil no. test freq l ( h) co (pf) qo 1-2 1-4 4-6 wire (mm ) reference l 1 fm rf 100 mh 24.9 66 4 0.09 2uew toko co., ltd. 657an-1611 l 2 fm osc 100 mh 17.9 69 5 0.09 2uew toko co., ltd. 657an-1610 3 1 l 1 : fm rf 3 1 l 2 : fm osc
TAN-325 2002-02-14 6 example of printed circuit board pattern (bottom view)
TAN-325 2002-02-14 7
TAN-325 2002-02-14 8 1. narrow v t range (v t 1.05~2.11 v) response (db) 0db 210 mvrms (l, rch) separation (db) thd (%) output level (db) output level (db) thd (%) detuning frequency f (khz) level (db) signal frequency (mhz) usable sensitivity, limiting sensitivity (db v emf) image ratio (db) input signal level vin (db v emf) output level (db) input signal level vin (db v emf) input signal level vin (db v emf) fm (hz) 30 400 1.0 300 200 100 0 100 200 300 400 20 10 0 2.0 3.0 4.0 thd 75 khz 22.5 khz vod 75 khz v cc 3 v f m 400 hz v t 1.64 v v in 60db v emf 0 86 90 94 98 102 106 108 10 20 30 40 limiting sensitivity ( 3db) usable sensitivity (s/n 30db) if stop sensitivity 5/5 v cc 3 v mod 22.5 khz f m 400 hz bw 400 hz~30 khz image ratio (v o 30 mvrms) 80 20 0 20 40 60 80 100 120 60 40 20 0 thd 22.5 khz signal amr mod 30% f m 400 hz 75 khz noise (400 hz ~30 khz) ~30 khz v cc 3 v f m 400 hz v t 1.64 v 0db 71 mvrms bw 400 hz~30 khz 98 mhz 22.5 khz 80 20 0 20 40 60 80 100 120 60 40 20 0 thd 22.5 khz amr mod 30% f m 400 hz 75 khz v cc 3 v f m 400 hz v t 2.11 v 0db 71 mvrms bw 400 hz~30 khz 108 mhz 22.5 khz signal 80 20 0 20 40 60 80 100 120 60 40 20 0 thd 22.5 khz signal amr mod 30% f m 400 hz 75 khz noise (400 hz~30 khz) ~30 khz bw 400 hz~30 khz 87.5 mhz 22.5 khz v cc 3 v f m 400 hz v t 1.05 v 0db 71 mvrms 30 20 10 0 10 20 1 40 100 200 400 1 k 2 k 4 k 10 k 2 3 4 5 6 20 30 40 50 thd separation response stereo threshold v cc 3 v, f m ext v t 1.64 v 60db v emf 98 mhz 75 khz 0.022 f 0.01 f 3.3 k v cc 0.01 f lpf constant : lch, l r : rch, r l
TAN-325 2002-02-14 9 2. wide v t range (v t 3.04~7.81 v) separation (db) output level (db) output level (db) thd (%) detuning frequency f (khz) level (db) signal frequency (mhz) usable sensitivity, limiting sensitivity (db v emf) image ratio (db) thd (%) input signal level vin (db v emf) output level (db) thd (%) input signal level vin (db v emf) input signal level vin (db v emf) thd (%) fm (hz) rn1001 i ref ? ta others response (db) 0db mvrms (l, rch) 30 400 1.0 300 200 100 0 100 200 300 400 20 10 0 2.0 3.0 4.0 thd 75 khz 22.5 khz vod v cc 3 v f m 400 hz v t 5.27 v v in 60db v emf 75 khz 80 20 0 20 40 60 80 100 120 60 40 20 0 thd 22.5 khz signal amr mod 30% f m 400 hz 75 khz noise (400 hz~30 khz) ~30 khz bw 400 hz~30 khz 87.5 mhz 22.5 khz v cc 3 v f m 400 hz v t 3.04 v 0db 71 mvrms 4.0 3.0 2.0 1.0 80 20 0 20 40 60 80 100 120 60 40 20 0 thd 22.5 khz signal amr mod 30% f m 400 hz 75 khz noise (400 hz ~30 khz) ~30 khz bw 400 hz~30 khz 98 mhz 22.5 khz v cc 3 v f m 400 hz v t 5.27 v 0db 71 mvrms 4.0 3.0 2.0 1.0 80 20 0 20 40 60 80 100 120 60 40 20 0 thd amr mod 30% f m 400 hz v cc 3 v f m 400 hz v t 7.81 v 0db 71 mvrms bw 400 hz~30 khz 108 mhz 22.5 khz signal noise (400 hz ~30 khz) ~30 khz 75 khz 22.5 khz 0 86 90 94 98 102 106 108 10 20 30 40 limiting sensitivity ( 3db) if stop sensitivity 5/5 v cc 3 v mod 22.5 khz f m 400 hz bw 400 hz~30 khz image ratio usable sensitivity (s/n 30db) 30 20 10 0 10 20 1 40 100 200 400 1 k 2 k 4 k 10 k 2 3 4 5 20 30 40 50 thd separation response v cc 3 v, f m ext v t v 60db v emf 98 mhz 75 khz : lch, l r : rch, r l 1 f 3.3 k v cc 0.1 f lpf constant 0.1 f
TAN-325 2002-02-14 10 toshiba is continually working to improve the quality and reliability of its products. nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. it is the responsibility of the buyer, when utilizing toshiba products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such toshiba products could cause loss of human life, bodily injury or damage to property. in developing your designs, please ensure that toshiba products are used within specified operating ranges as set forth in the most recent toshiba products specifications. also, please keep in mind the precautions and conditions set forth in the ?handling guide for semiconductor devices,? or ?toshiba semiconductor reliability handbook? etc.. the toshiba products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. unintended usage of toshiba products listed in this document shall be made at the customer?s own risk. the products described in this document are subject to the foreign exchange and foreign trade laws. the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba corporation for any infringements of intellectual property or other rights of the third parties which may result from its use. no license is granted by implication or otherwise under any intellectual property or other rights of toshiba corporation or others. the information contained herein is subject to change without notice. 000707eb a restrictions on product use
|
