AN7223 PANASONIC

Document overview

  • Manufacturer or author: Provided By digicamel.com
  • PDF pages: 3

Technical content

The AN7223 is an IC designed for high-class radio cas- sette recorder with multifunctioned FM/AM IF system. n Features

  • Wide operating supply voltage range : VCC = 2.8V~12V
  • Incorporating both FM and AM detectors
  • Incorporating a level indicator output (FM/AM common use)
  • AM : High sensitivity,including RF amplifier
  • Low power consumption
  • Muting control
  • AFC control
  • Fewer external parts
  • High stability on both AM and FM
  • Low shock noise level from function switch operation
  • SW band available (f= 30MHz) AN7223 AM Tuner, FM/AM IF Amplifier Circuit for Radio Cassette Recorder 9 21.7–0.3 1.2–0.25 3 ~ 15˚ Unit : mm 6.3–0.25 0.5–0.12.54 18-Lead DIP Package (DIP018-P-0300E) (3.45) 7.62–0.25 0.3 + 0.1 – 0.25 0.51min. 3.8–0.25 8 9 12 5 18 6 2 10 11 AM/FM IF Amp. FM IF Amp. FM Quad. Det. Mute Det. Level Meter Mute or Shock Noise Canceller AF Amp. AM RF Amp. AM Mixer AM L Osc. AGC AM Det. GNDV CC (AM) V CC n Block Diagram

ICs for FM/AM T uner AN7223 Pin N o. Pin N am e FM IF A m p. Input V C C (A M ) A M R F A m p. Input A M M ixer O utput A G C O utput (2) A G C O utput (1) A M IF A m p. Input IF B y-pass IF B y-pass n Pin D escriptions Pin N o. Pin N am e A M D etection O utput G N D FM D etector C oil A F O utput V C C Level M eter O utput A FC O utput R eference V oltage Local O scillation V C C PD Topr Tstg Supply V oltage Pow er D issipation O perating A m bient Tem perature Storage Tem perature V m W Param eter Sym bol R ating U nit 14.4 317 –20 ~ + 75 –55 ~ + 150 n Absolute M axim um R atings (Ta=25˚C ) V i= 80dB µ, f=10.7M H z, fdev.= 22.5kH z, fm = 400H z Input at υO = –3dB Input at υO = less than –20dB V i= 50dB µ, f=10.7M H z, fdev.= 22.5kH z, fm = 400H z V i= 80dB µ, f= 10.7M H z, fdev.= 22.5kH z, fm = 400H z V i= 80dB µ, f= 1M H z, M od.= 30% , fm = 400H z Input at υO = 10m V V i= –10dB µ,f= 1M H z, M od.= 30% , fm = 400H z V i= 80dB µ, f= 1M H z, M od.= 30% , fm = 400H z Param eter Sym bol C ondition m in. typ. m ax. U nit Total C ircuit C urrent D em odulation O utput Level Lim iting Sensitivity M uting Sensitivity Signal M eter D riving O utput 1 Signal M eter D riving O utput 2 Total C ircuit C urrent D etection O utput Level M ax.Sensitivity Signal M eter D riving O utput 1 Signal M eter D riving O utput 2 Itot υO (FM ) V i (lim ) V i (m ute) V 15 V 15 Itot υO (A M ) Sm ax. V 15 V 15 41.5 120 1.14 4.5 1.12 FM A M m A m V dB µ dB µ m V V m A m V dB µ m V V (D C m easurem ent) (D C m easurem ent) 100 44.5 600 1.26 9.5 1.25 125 47.5 1150 1.42 100 12.5 130 1.38 n Electrical C haracteristics (V C C =5V , Ta= 25˚C )

AN7223 ICs for FM/AM T uner 18 17 16 15 14 13 12 11 10 1 2 3 4 5 6 7 8 9 A N 7223 V C C (5V ) 0.022µF 5.1kΩ 10µF 22µF 47pF 0.022µF 0.022µF A M FM 47Ω 100µF V 15 47µF 100µF 470Ω 2.2kΩ 1 T1 0.0047 µF 0.01µF 0.022µF V O (FM .A M ) 27kΩ to Front End O FF M ute O N 2.1kΩ 100µF 10kΩ 6 4.7µF 47pF 0.02µF 0.02µF Sym bol U se, Freq Type N o. M aker C onnection D iagram N um ber of Turns Tuning C ap. U nloaded Q M A TSU SH ITA M A TSU SH ITA M A TSU SH ITA 100pF 1500pF 90–20% 95–20% 60–30% FM Q uad. C oil 10.7M H z A M M W O sc. C oil A M M ix. O utput 455kH z ELL– 7S754 EIF– 7S752A n C oil Specifications 1 – 2 8T 2 – 3 5T 4 – 6 3T 1 – 2 4T 2 – 3 125T 4 – 6 7T 3 – 2 35T 6 – 4 10T 2 – 1 19T EIA – 7S802A TO K OC F1 Sym bol M aker B and W idth Loss n C eram ic Filter Specification 455kH z U se Type N o. C enter Freq. A M IF C FM 2 – 455B 7kH z (–6dB ) 2.6dB n Application Circuit