AN7233SH PANASONIC | Alldatasheet

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Technical content

The AN7233SH is an IC for tuner of 1.5V headphone stereo. It incorporates AM tuner + FM IF + FM detector + FM MPX and has been provided with the station detec- tion function and IF count output function required to sup- port DTS, and the AM IF output function required to sup- port AM stereo. It is included in the 28-lead SSOP pack- age with 0.5mm pitch. n Features

  • Low voltage operation : VCC =1.0V or more
  • AM tuner/FM IF + FM detection + FM MPX : one chip
  • DTS supported
  • AM stereo support possible
  • Adjustable sensitivity for station detection
  • Small package n Block Diagram ICs for FM/AM Tuner AN7233SH FM/AM Tuner for 1.5V Headphone Stereo Unit : mm 28 15 11 4 (0.65) 0.50 0.2 + 0.10 – 0.05 1.55max. 1.20–0.20 28-lead SSOP package (SSOP028-P-0300) 7.80–0.20 8.10–0.30 6.10–0.20 0.5–0.20 SEATING PLANE 0 ~10˚ 0.15 + 0.10 – 0.05 SEATING PLANE 0.10–0.10 AM Det. AGCPC AM Osc AM Mix.AM RF IF LEVEL Det. SD V CC GND FM Det. ST Ind. VCO LPF MPX SW AM AF Buffer 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Freq. Divider

AN7233SH ICs for FM/AM T uner n Absolute M axim um R atings (Ta=25˚C ) V C C IC C PD Topr Tstg Supply V oltage Supply C urrent Pow er D issipation O perating A m bient Tem perature Storage Tem perature V m A m W Param eter Sym bol R ating U nit 7.0 –20 ~ + 75 –55 ~ + 125 Param eter Sym bol R ange n R ecom m ended O perating R ange (Ta=25˚C ) O perating Supply V oltage R ange V C C 1.0V ~ 2.0V Param eter Sym bol C ondition m in. typ. m ax. U nit n Electrical C haracteristics (V C C =1.2V , Ta= 25˚C –2˚C ) Total C ircuit C urrent O utput V oltage Lim iting Sensitivity S/N R atio TH D m A m V dB µ dB N o signals (under V C O operating) V i for V O = –3dB Itot (FM ) V O (FM ) V i (lim ) IF B uffer O utput 2 LED O N Sensitivity LED D ecreased V oltage O N Sensitivity IF B uffer O utput 1 V C C =1.0V , N o m odulation R EQ O FF V IN = 80dB µ, N o m odulation V C C =1.1V , N o m odulation R EQ O FFV i (FM LED 1) V i (FM LED 2) V O IF1 (FM ) 5.5 7.5 9.5 1.4 dB µ dB µ m V rm s N ote) FM : f = 10.7M H z, D f = 22.5kH z, fm = 1kH z, V IN = 80dB µ, A M : f = 1M H z, M od. = 30% , fm = 1kH z, V IN = 50dB µ M PX : f = 10.7M H z, D f = 75kH z (L+ R 90% , Pilot90% ), fm = 1kH z, V IN = 80dB µ FM S/N (FM ) TH D (FM ) AM S/N (A M ) TH D (A M ) V C C =1.1 V , N o m odulation R EQ O FF M PX TH D (STER EO ) V P (O N ) V P (O FF) V O IF2 (FM ) V C C =1.0V , V IN = 80dB µ, N o m odulation m V rm s19 Total C ircuit C urrent O utput V oltage W eak Input D etection O utput V oltage S/N R atio TH D LED O N Sensitivity Itot (A M ) V O (A M ) V O (A M M IN ) m A m V m V dB µ dB 3.0 5.0 7.0 5.0 V IN = 26dB µ V i (A M LED ) IF B uffer O utput 1 V O IF1 (A M ) V C C =1.1V , V IN = 45dB µ, N o m odulation m V rm s29 43 57 IF B uffer O utput 2 V O IF2 (A M ) V C C =1.0V , V IN = 45dB µ, N o m odulation m V rm s15 A M IF O utput V oltage V O (A M IF) m V rm s15 30 60V IN = 50dB µ, N o m odulation C hannel B alance Separation TH D (Stereo) Stereo LED O N Level Stereo LED O FF Level C B Sep. dB dB 0.8 4.8 1.9 5.0 7.0 M onaural D f= 75kH z M PX Portion only L + R = 30% L + R = 90% , Pilot= 10% Pilot only Pilot only

ICs for FM/AM T uner AN7233SH n Pin D escriptions Pin N o. Pin N am e A M R F A m p. Input A M M ixer O utput Supply Pin for IF Input Portion/A M O SC Section A M A G C A M IF A m p. Input FM IF A m p. Input SD LED O N Level A djustm ent Stereo LED D rive/A M IF O utput Pin SD LED D rive Pin Supply Pin Phase-Shifter Pin for FM D etection G N D Pin O utput for FM /A M IF C ount IF C ount C ontrol Pin Pin N o. Pin N am e A M D etection Pin A M A F A m p. Input Pin O scillation Prevention C apacitor Pin FM /A M D etection O utput Pin M PX Input Pin R ch O utput Pin Lch O utput Pin A M /FM C hangeover/19kH z O utput Pin Loop Filter Pin 1 for PLL Loop Filter Pin 2 for PLL C R C onnecting Pin for V C O Low Pass Filter Pin 1 for Pilot D etection Low Pass Filter Pin 2 for Forced M O N O /Pilot D etection A M Local O scillation C oil Pin D ivider A M D et. A G CPC A M O SC A M M ix. A M R F IF LEV EL D et. SD FM D et. ST Ind. V C O LPF M PX SW A M A F B uffer 1 2 3 6 7 8 9 10 11 12 13 144 5 M PX Fillter 0.022µF 24kΩ Freg. C ounter 8200pF 4.7µF 4.7µF 8200pF 100kΩ 100kΩ V V C C 0.047µF STER EO SG 0.022µF 82pF 0.33µF 6.2kΩ 6.2kΩ + 0.22µF A M M O N O . + 0.1µF 1kΩ 680pF 15kΩ10kΩ + 1µF10pF V 1 470kΩ K V 1281 R EQ 0.01µF 0.033µF 2SC 1359100Ω 2SC 1359 R F V oltage M eter 4.3kΩ1.8kΩ 2SK 192A390Ω 510kΩ 510kΩ C D A 10.7M G39pF SD 0.01µF ST 0.022µF 0.01µF 51.7kΩ IF C ount 220kΩ 280Ω 50Ω 4.7µF SFE10.7M A 5 SFU 450314 1m H FM SG A M SG 50Ω 50Ω 0.022µF A M IF A udio A nalazer R LO 2U 8 – M Tuning Electric C urrent 28 27 26 25 24 23 22 21 20 19 18 17 16 15 4.7kΩ 1kΩ 1kΩ V 3.3kΩ 270pF n Application Circuit