ICs for Audio Common Use AN7135 Dual 7.5W Low Frequency Power Amplifier Circuit ■ Overview Unit : mm 5.9±0.25 7.7±0.3 7.8±0.25 ø 3.6 0.6±0.1 20.0±0.2 R1.8 1 + 0.1 1.2±0.1 3.5±0.3 0.35 – 0.05 Fin-attached 12-lead SIP package (HSIP012-P-0000A) ■ Block Diagram VCC 3 2 Input Circuit 10 SEPP Output Circuit Drive Circuit 1 Bias Circuit Crossover Distortion 6 5 12 11 Over Temperature Protection 8 Input Circuit 2.54 0.6 ■ 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 29.6±0.3 12 29.96±0.3 28.0±0.3 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 providing 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. SEPP Output Circuit Drive Circuit 4 9 GND (Input) GND (Output) 7 ICs for Audio Common Use AN7135 ■ Pin Name Pin No. Pin Name Pin No. Pin Name 1 Negative Feedback Ch.1 7 Output Ch.2 2 Input Ch.1 8 Boot-strap Ch.2 3 Ripple filter/Stand-by Controller 9 GND (Output) 4 GND (Input) 10 VCC 5 Input Ch.2 11 Boot-strap Ch.1 6 Negative Feedback Ch.2 12 Output Ch.1 ■ Absolute Maximum Ratings (Ta= 25˚C) Symbol Rating Unit Supply Voltage Parameter VCC 24 V Supply Current ICC 4 A Power Dissipation Note 1) PD 62.5 W Operating Ambient Temperature Topr – 30 ~ + 75 ˚C Storage Temperature Tstg – 55 ~ + 150 ˚C Note) θj–c = 2˚C/W ■ Recommended Operating Range (Ta= 25˚C) Parameter Symbol Range Operating Supply Voltage Range VCC 5.5V ~ 18.0V Note) 24V at no signals ■ Electrical Characteristics (VCC = 15V, fIN = 1kHz, RL = 3Ω, Both channel drive, Ta= 25˚C ± 2˚C) Parameter Symbol Condition min. typ. Quiescent Current ICQ VIN= 0mV Output End Noise Voltage Note 1) VNO VIN= 0mV, Rg= 10kΩ Voltage Gain GV VIN= 3mV THD VIN= 3mV Max. Output Power PO THD= 10% 7.0 7.5 Channel Balance CB VIN= 3mV –1 0 RR VCC (ripple)= 280mV, f (ripple)= 120Hz Rg= 0Ω Sine wave 45 50 Total Harmonics Distortion Ripple Rejection Ratio Note 1) Input Offset Voltage Stand-by Current VIN (O.S) ISTB Input pin open Pin3 open Note 1) Measured through 15Hz to 30kHz (12dB/OCT) filter 42.5 max. Unit 14 20 mA 0.25 0.50 mV 44.5 46.5 dB 0.40 0.75 10 % W +1 dB dB 30 mV 30 µA ICs for Audio Common Use AN7135 ■ Application Circuit VCC (15V) 3 + R.F & STB 1000µF VCC 10 390Ω BS1 VSTB 11 IN1 + 2 100µF + 47µF + 10kΩ 1000µF + 12 30kΩ 1 NF1 VO 1 OUT1 – 0.1µF 150Ω + 30kΩ 100µF 3Ω (20W) 2.2Ω BS2 8 + 5 47µF + IN2 1000µF + 7 6 NF2 VO2 OUT2 – 0.1µF 150Ω 30kΩ 100µF 4 2.2Ω 3Ω (20W) 9 (Standard Conditions) PD – Ta 80 70 (a) Power Dissipation PD (W) (62.50) 60 50 PD at Ta = 25˚C (a) 62.50W (θ j–c = 2.0˚C/W) Infinity heat sink (b) 20.83W (θ f = 4.0˚C/W) Heat sink area : 100cm2 × 3mmAl (Black lacquer coated) 200cm2 × 2mmAl (Lacquered) (c) 15.63W (θ f = 6.0˚C/W) Heat sink area : 100cm2 × 2mmAl (Not lacquered) (d) 3.0W at Ta = 30˚C (θ j–a = 40˚C/W) Without heat sink 40 30 (b) (20.83) 20 (c) (15.63) 10 (3.0) 0 (d) 0 60 80 100 120 20 40 (30) Ambient Temperature Ta (˚C) 140 160 VCC = 15V RL = 3Ω fIN = 1kHz VIN = 10mV or 3mV Rg = 600Ω VSTB = 5.0V Both Ch. Drive With heat sink Tr for stand-by SW NPN··· 2SC828A PNP··· 2SA564A ICs for Audio Common Use AN7135 PO – VCC 20 VSTB = 6V 8 48 Voltage Gain GV (dB) No RRF 12 VCC = 15V RL = 3Ω VIN = 10mVrms Both ch. drive 50 16 Output Power PO (W) Quiescent Current ImCQ (mA) 16 GV, THD – fIN 52 freq. = 1kHz THD = 10% 12 RL = 3Ω 8 RL = 4Ω Gain 46 0.8 42 0.6 THD 40 0.4 38 4 Ch. 2 36 VSTB = 4V RL = 8Ω 0.2 Ch. 1 VSTB = 5V 4 1.0 44 0 34 VSTB = 3V 8 12 16 0 20 4 0 Supply Voltage VCC (V) 30 10 3 3 1 1 0.3 0.3 0.1 0.1 0.03 0.03 0.01 0.1 0.3 1 3 10 30 46 Gv 45 7 44 6 43 5 42 4 41 3 40 2 THD 0.01 100 0 Input Voltage VIN (mV) 12 8 0.8 RR – fripple 0.4 0.2 16 0 10 0 20 100 RR – Vripple Ripple Suppression Ratio RR (dB) VCC = 15V VR = 280mVrms Rg = 0 DIN/Audio With filter 60 40 CR– F = 100µF (same for 47µF) 20 1k 10k 100k Resistance Rg (Ω) RR – VCC 100 80 0.6 Supply Voltage VCC (V) 100 Ripple Suppression Ratio RR (dB) 4 VCC = 15V DIN/Audio With filter 1 VC = 5V 0 100k Vno – Rg VIN = 3V fIN = 1kHz 9 RL = 3Ω Both ch. drive 8 VC = 5V 10k 1.0 10 47 1k 100 GV, THD – VCC Voltage gain GV (dB) Output Power PO (W) 10 32 10 20 Input Frequency fIN (Hz) 100 VCC = 15V RL = 3Ω Both ch. drive 1kHz 10kHz 100Hz Total Harmonics Distortion THD (%) 30 16 Supply Voltage VCC (V) PO, THD – VIN 100 12 8 Noise Voltage Vno (mV) 4 Total Harmonics Distortion THD (%) 0 80 VCC = 15V fR = 120Hz Rg = 0 DIN/Audio With filter 80 VR = 280mVrms fR = 120Hz Rg = 0 DIN/Audio With filter 70 Ripple Suppression Ratio RR (dB) 0 60 40 20 60 50 40 30 20 10 0 10 20 30 100 200 300 500 Ripple Frequency fripple (Hz) 1k 0 0.1 0.2 0.3 0.5 1 3 5 Ripple Voltage Vripple (V) 10 0 0 4 8 12 16 20 24 Supply Voltage VCC (V) 28 32 Total Harmonics Distortion THD (%) ICQ – VCC 20