AN7118S PANASONIC | Alldatasheet

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Technical content

The AN7118S is the ICs designed for power amplifier of low voltage operated compact radio and stereo tape recorder. Stereo operation is enabled due to incorporat- ing two amplifiers on one chip. Miniaturization of cassette and high integration is realized due to SOP package. n Features

  • Low voltage operation : VCC = 1.8V to 4.5V
  • Reduced voltage operation is available.
  • Low pop noise when supply voltage is switched ON and OFF
  • Stereo drive of 4Ω (speaker) to 32Ω (headphone) load is possible. AN7118S Low Voltage Dual 35mW Audio Power Amplifier Circuits (BTL 300mW) 0.3 1.5–0.2 0.65 0.15 18-Lead SOP Package (SOP018-P-0300) 12.6–0.3 7.7–0.3 5.4–0.3 Unit : mm 18 7 6 5 4 9 10 12 13 14 15 1 Input (1) Input (2) Output (1) Output (2) SEPP Output Amp. SEPP Output Amp.Driver Driver Input Amp. Input Amp. GND (Input) GND (Output) V CC 16N.C N.C n Block Diagram

ICs for Audio Common UseAN7118S 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 A m W Param eter Sym bol R ating U nit 4.5 400 – 20 ~ + 75 – 50 ~ + 125 n Pin D escriptions Pin N o. Pin N am e G N D (O utput) O utput C h.1 N C B ootstrap Phase C om pensation Phase C om pensation N .F.B Input C h.1 V C C Pin N o. Pin N am e G N D (Input) Input C h.2 N .F.B Phase C om pensation Phase C om pensation B ootstrap N C O utput C h.2 R ipple Filter n Electrical C haracteristics (V C C = 3V , Ta = 25˚C ) V i= 0m V V i= 1.5m V , R L= 32Ω TH D = 10% , R L= 32Ω × 2ch. V i= 1.5m V , R L= 32Ω × 2ch. R g= 10kΩ , D IN A udio Filter V C C = 3V – 200m V , f= 100H z Param eter Sym bol C ondition m in. typ. m ax. U nit 0.3 0.5 Q uiescent C ircuit C urrent <D U AL (f=1kH z)> V oltage G ain M axim um O utput Total H arm onic D istortion O utput N oise V oltage Input R esistance R ipple R ejection R atio IC Q G V PO TH D V no R i R R m A dB m W m W kΩ dB

ICs for Audio Common Use AN7118S PD – Ta 1200 1000 800 600 400 200 A m bient Tem perature Ta (˚C ) Input Pow er D issipation PD (m V ) 20 40 600 80 A N 7118S 6 5 9 4 12 13 14 18 15 + –+ C h.1 Input C h.2 Input 68pF 47µF V C C 220µF 470µF 0.01µF 4.7Ω 470µF SP SP4.7Ω 0.01µF 47µF220µF68pF22µF N .C N .C A N 7118S D ual C ircuit 22µF n Application Circuit n Characteristics Curve n Supplem entary Explanation of IC C haracteristics

  • N ot necessary for input coupling capacitor. Input electric potential is about 0 bias, using PN P Tr for input stage.
  • O ne chip dual am p. (Stereo operation)
  • B attery operation is possible at 1.8V to 4.5V
  • D ecreased voltage operation is available, and suitable for a long battery operation.
  • Load im pedance can be driven from 4Ω , w hich m akes it possible to use for both speaker and headphone.
  • Sm all shock noise at pow er O N and O FF.