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12V Dual Power Amplifier

BA5406
Dimensions (Unit: mm)

The BA5406 is a monolithic dual OTL power amplifier containing two sets of high-power AF power amplifiers. The device delivers 5 watts x 2 into 30 loads with a 12V supply, or 2.8 watts x 2 into 30 loads with a 9V supply. The BA5406 features minimal power-on pop noise and immunity to supply voltage drop. With its minimal RF radiation, the device is ideally suited for use in stereo radio cassette recorders.

m.Jmmmlmlmlmfmlmlmmlia 1 2 3 4 5 6 7 8 9 10 11 12

Fig. 1

Block Diagram

Features
1. Minimal power-on pop noise. 2. Immunity to supply voltage drop (operates down to Vcc=45V typ.). 3. Excellent channel balance. 4. L o w d i s t o r t i o n (THD=0.3% at PO=O.5W). 5. 12.pin SIP package for mounting ease and saved space on a PC board. 6. Ripple filter input (pin 6) can also be used as a muting control input. 7. Symmetrical pin configuration facilitates art work. 8. Low thermal resistance of the package makes heat-sink design easy. 9. Built-in high-frequency phase compensation capacitor. IO. Minimal RF radiation allows for free system layout.

Fig. 2

Internal Equivalent Circuit

Applications
Stereo radio cassette recorders Desktop stereo systems Multiplexed audio subchannels for TV sets

Fig. 3

179

Absolute Maximum Ratings (Ta=25"C)

Back-me;;1 temperature 75°C

Recommended Operating Conditions
Parameter ~--Supply voltage

*

Symbol ice

j

Min.' - 5

'

Typ.' 12

'1

Max. " 15

. Unit 1 v

Electrical Characteristics (Ta=25"C, Vcc= 12V)

/ Symbol /

Min. _-

_

TYP.:

Max.~,.

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i 1

Conditions

Electrical Characteristics (Ta=25"C, Vcc=SV)
Parameter - _ -_._Owescent currenl Closed loop voltage gain Rated output power Raled output power Symbol Min 10 / Gvc 15 43 TYP. 35 46

Max, '

Unit mA

Conditions

I

70

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lnpul Impedance

Test

Circuit

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Power supp

Application Example
33on +

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o

VCC

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33uF

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60.221rF

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-4

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1 I 10

Fig. 5

Electrical Characteristic Curves

A M B I E N T T E M P E R A T U R E : Ta (`C)

SUPPLY VOLTAGE : VCC (VI

AMBiENT T E M P E R A T U R E : is (`cl

Frg 6 Thermal derating curves

Fig. 7 Voltage gain/quiescent current vs. supply voltage

Frg. 8 Total harmonic drstortionivoltage garniquiescent current vs. ambient temoerature

"IO

loo

Iii FREOUENCY

IOk I (Hz)

look

0 IO

100

Ik FREOVENCY : t (Hz)

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look

Frg. 9 Voltage gain vs. frequency

Fig. IO Crosstalk vs. frequency

Frg. 11 Total harmonic distortion vs. supply voltage

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14 FREOUENCY I IHZ!

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o.ll. 1 0

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,o S U P P L Y V O L T A G E : Vcc (V)

OUTPUT POWER : Pour (WI

Fig. 12 Total harmonic distortion vs. frequency

Fig. 13 Total harmonic distortion vs. ouptut power

Fig. 14 Output power vs. supply voltage

Electrical Characteristic Curves

SUPPLY VOLTAGE : V C C (V)

OUTPUT

POWER

PO (W)

OUTPUT POWER : POUT(W)

Fig. 15 Output power vs. supply voltage

Fig. 16 Power dissipation vs. output power

Fig. 17 Power dissipation vs. output power

S U P P L Y V O L T A G E Vcc (V)

5 10 15 SUPPLY VOLTAGE : VCC (V)

Fig. 18 Power dissrpation vs. output power

Fig. 19 Maximum power dissipation vs. supply voltage

Frg. 20 Ripple rejection vs. supply voltage