AN7135

AN7135 PANASONIC | Alldatasheet

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Technical content

The AN7135 is a power amplifier circuit of 7.5W (15.0V, 3Ω ) output. It can provide stereo operation since two amplifiers are incorporated in a chip. Static circuit current is very smaller than conventional IC for power amplifier, and various protective circuits are incorporated, thus pro- viding high reliability. For its feature of very small static circuit current, it is best suitable for dry cell operating sets (e.g. radio cassette recorder). It requires smaller number of external components because it has little distortion and low noise and can support the stand-by condition. n Features

• Small static circuit current
• Stand-by condition supported
• Good oscillation stability
• Little unwanted radiation to RF portion of AM/FM
• Little distortion
• Low noise
• Small shock noise at power ON/OFF, stand-by ON/OFF
• Fewer external components AN7135 Dual 7.5W Low Frequency Power Amplifier Circuit 29.96–0.3 29.6–0.3 Unit : mm 28.0–0.3 20.0–0.2 1.2–0.1 2.54 0.6–0.1 3.5–0.3 0.35 + 0.1 – 0.05 ø 3.6 R1.8 Fin-attached 12-lead SIP package (HSIP012-P-0000A) 0.6 Input Circuit Bias Circuit Drive Circuit SEPP Output Circuit Input Circuit Drive Circuit SEPP Output Circuit Over Temperature Protection Crossover Distortion V CC GND (Output) GND (Input) n Block Diagram

ICs for Audio Common UseAN7135 Pin N o. Pin N am e N egative Feedback C h.1 Input C h.1 R ipple filter/Stand-by C ontroller G N D (Input) Input C h.2 N egative Feedback C h.2 n Pin N am e Pin N o. Pin N am e O utput C h.2 B oot-strap C h.2 G N D (O utput) V C C B oot-strap C h.1 O utput C h.1 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 N ote 1) O perating A m bient Tem perature Storage Tem perature V A W Param eter Sym bol R ating U nit 62.5 – 30 ~ + 75 – 55 ~ + 150 N ote) θj–c = 2˚C /W 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 5.5V ~ 18.0V N ote) 24V at no signals Param eter Sym bol C ondition m in. typ. m ax. U nit n Electrical C haracteristics (V C C = 15V , fIN = 1kH z, R L = 3Ω , B oth channel drive, Ta= 25˚C – 2˚C ) Q uiescent C urrent O utput End N oise V oltage N ote 1) V oltage G ain Total H arm onics D istortion M ax. O utput Pow er C hannel B alance m A m V dB W dB V IN = 0m V V IN = 0m V , R g= 10kΩ V IN = 3m V V IN = 3m V TH D = 10% V IN = 3m V IC Q V N O G V TH D PO C B Input O ffset V oltage Stand-by C urrent R ipple R ejection R atio N ote 1) R R Input pin open Pin3 open V C C (ripple)= 280m V , f (ripple)= 120H z R g= 0Ω Sine w ave V IN (O .S) ISTB 42.5 7.0 0.25 44.5 0.40 7.5 0.50 46.5 0.75 45 50 + 1 10 30 dB m V µA N ote 1) M easured through 15H z to 30kH z (12dB /O C T) filter

ICs for Audio Common Use AN7135 3 10 4 9 30kΩ 150Ω 30kΩ 150Ω (20W ) (20W )2.2Ω 0.1µF 2.2Ω 0.1µF 1000µF47µF 1000µF47µF B S1 O U T1 B S2 O U T2 V C C (15V ) 1000µFV C C R .F STB IN 1 IN 2 N F2 N F1 10kΩ 100µF 100µF 100µF 30kΩ 390Ω V STB n Application C ircuit (Standard C onditions) V C C = 15V R L = 3Ω fIN = 1kH z V IN = 10m V or 3m V R g = 600Ω V STB = 5.0V B oth C h. D rive W ith heat sink Tr for stand-by SW N PN ··· 2SC 828A PN P··· 2SA 564A V O 1 V O 2 A m bient Tem perature Ta (˚C ) Pow er D issipation PD (W ) 40 8060 100 120 14020 (30) (15.63) (3.0) (20.83) (62.50) (a) (b) (c) (d) 0 160 PD – Ta PD at Ta = 25˚C Infinity heat sink H eat sink area : 100cm 2 × 3m m A l (B lack lacquer coated) 200cm 2 × 2m m A l (Lacquered) H eat sink area : 100cm 2 × 2m m A l (N ot lacquered) (d) 3.0W at Ta = 30˚C (θ j–a = 40˚C /W ) W ithout heat sink

ICs for Audio Common UseAN7135 IC Q – VC C Supply V oltage V C C (V ) Q uiescent C urrent Im C Q (m A ) 120 4 8 2016 N o R R F V STB = 5V V STB = 4V V STB = 3V V STB = 6V G V, TH D – VC C Supply V oltage V C C (V ) V oltage gain G V (dB ) V C = 5V V C = 5V PO – VC C Supply V oltage V C C (V ) O utput Pow er PO (W ) V oltage G ain G V (dB ) R L = 8Ω G V, TH D – fIN Input Frequency fIN (H z) 100k10 1k 10k 1.0 0.8 0.6 0.4 0.2 100 Total H arm onics D istortion TH D (% ) G ain TH D C h. 1 C h. 2 1.0 0.8 0.6 0.4 0.2 N oise V oltage V no (m V ) Vno – R g R esistance R g (Ω ) 100k10 1k 10k100 PO , TH D – VIN 100 0.3 0.1 0.03 0.01 Input V oltage V IN (m V ) O utput Pow er PO (W ) 1000.1 0.3 1 3 10 30 100 0.3 0.1 0.03 0.01 Total H arm onics D istortion TH D (% ) Total H arm onics D istortion TH D (% ) G v TH D R R – VC C Supply V oltage V C C (V ) R ipple Suppression R atio R R (dB ) 16 200 4 8 12 322824 100 R ipple Suppression R atio R R (dB ) R R – fripple R ipple Frequency fripple (H z) 1k10 100 200 300 5003020 C R – F = 100µF (sam e for 47µF) 100 R ipple Suppression R atio R R (dB ) R R – Vripple R ipple V oltage V ripple (V ) 100.1 1 3 50.3 0.50.2 124 8 2016 124 8 2016 freq. = 1kH z TH D = 10% V C C = 15V R L = 3Ω V IN = 10m V rm s B oth ch. drive V C C = 15V D IN /A udio W ith filter V IN = 3V fIN = 1kH z R L = 3Ω B oth ch. drive V C C = 15V R L = 3Ω B oth ch. drive 1kH z 10kH z 100H z V C C = 15V V R = 280m V rm s R g = 0 D IN /A udio W ith filter V C C = 15V fR = 120H z R g = 0 D IN /A udio W ith filter V R = 280m V rm s fR = 120H z R g = 0 D IN /A udio W ith filter R L = 3Ω R L = 4Ω