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TA8246-TA8246H
DUAL AUDIO POWER AMPLIFIER 6W x 2CH
TOSHIBA TA8246H
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8246H
DUAL AUDIO POWER AMPLIFIER 6Wx2CH
The TA8246H is dual power amplifier for Consumer
applications.
This IC provides an output power of 6 watts per channel
(at vcc=20v, f=1kHz, THD=10%, RL=8Q)
It is suitable for power amplifier of TV and home Stereo.
FEATURES
0 High Output Power
: Pout=6W (Typ.)
(vcc=20v, RL=8Q, f=1kHz, THD= 10%) HZlP12-P-1.78B
Weight : 4.04g (Typ.)
o Built-in Audio Muting Circuit.
0 NF Terminal Capacitor Less
: Fixed Gain (Gv=34dB), Needless External capacitor.
0 Protectors
Thermal shut down Protection circuit, Over Voltage Protection circuit
0 Low Poping Noise
0 High THD Ratio
0 High input dynamic range
0 Available for using same PCB layout with 3 channel IC : TA8256H.
0 Operating Supply Voltage Range
2 Vcc(opr)=10~3ov (Ta =25°C)
961001 EBA2
O TOSHIBA is continually working to improve the quality and the reliability of its products. Nevertheless, semiconductor devices in general can
malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibilit of the buyer, when utilizing
TOSHIBA products, to observe standards of safety, and to avoid situations in which a malfunction or failure of a TO HIBA product could cause loss
of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified
operating ranges as set forth in the most recent products specifications. Also, please keep in mind tho precautions and conditions set forth in tho
TOSHIBA Semiconductor Reliability Handbook.
0 The products described in this document are subject to foreign exchange and foreign trade control laws.
0 The information contained herein is presented only as a guide for the ap Iications of our products. No responsibility is assumed by TOSHIBA
CORPORATION for any infringements of intellectual property or other rights o the third parties which may result from its use. No license is granted
b implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others.
o T e information contained herein is subject to change without notice.
1997-11-05 1/10
TOSHIBA TA8246H
BLOCK DIAGRAM
Ripple Filter
moiaur1o--a'-(i.
OUT1 f
s;-e, Pre-GND tlil-CL?: Pw-GNDQ
3509 20kQ
AMP 2 f/i
INPUT? o--a'-(i +
MUTE sw MUTE T.C.
MUTE +
J FMUTE OFF
1997-11-05 2/10
TOSHIBA
TA8246H
TERMINAL EXPLANATION
TERMINAL SYMBOL FUNCTION EQUIVALENT CIRCUIT
3 Pre-GND GND terminal -
T“? VCC
5 MUTE sw '
MUTE control terminal " MUTE Amplifier
7 MUTE T.C.
6 RF. Ripple filter _ ll tpore'e11hTrcuit
(i) cl ll to Bias circuit
iii; ll
8 OUT1
Output
12 OUT2
9 VCC Supply voltage terminal
10 PW-GND GND terminal
C), © : N.C
1997-11-05 3/10
TOSHIBA TA8246H
MAXIMUM RATINGS (Ta=25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VCC 30 V
Output Current (Peak/Ch) |o(peak) 2 A
Power Dissipation PD (Note) 25 W
Operating Temperature Top, -20--75 ''C
Storage Temperature Tstg -55--150 ''C
(Note) Derated above Ta=25°C in the proportion of 200mW/°C.
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, Vcc=20V, RL=8Q, Rg =6200, f=1kHz, Ta =25°C)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Quiescent Current ICCQ - Vin =0 50 85 130 mA
o t t P Pout(1) - THD=10% 5.0 6.0 - W
u pu ower Pout(2) - THD=1% - 4.5 -
Total Harmonic THD(1) - Pout=2W - 0.04 0.2 (y
Distortion THD(2) - Pout=2W, f=10kHz - 0.1 0.6 tl
Voltage Gain Gv - Vout=0.775Vrms 32.5 34.0 35.5 dB
Input Resistance Rin - - 34 - k0.
Ripple Rejection Ratio R.R. - f=100Hz -40 -47 - dB
Output Noise Voltage Vno - Rg =10kQ, BVV=20Hz-20kHz - 0.14 0.3 mVrms
Cross Talk C.T. - Rg =10kQ, Vout= 0.775Vrms - - 60 - dB
M t C nt IV It Vth(ON) - MUTE ON 3.1 - Vcc V
Ll e o ro o age Vth (OFF) - MUTE OFF 0 - 2.5
Mute Attenuation Level ATr - Vout=0.775Vrms-9MUTE -52 - 60 - dB
1997-11-05 4/10
TOSHIBA TA8246H
TEST CIRCUIT
1000#F
'W' 'db'
Ripple Filter
moiaur1o-.-yt-(i.
1000 F
1.0;1F I'"
OUT1 f
g-(i) Pre-GND tlil-CL?: Pw-GNDQ
3500 20m 2
OUT2 -
n AMP 2 f, b '.e
- 4k 1000 F
INPUT? o-,-nt:-(2', + W /d
1.0HF cl
fist fil
MUTE sw MUTE T.C.
MUTE ll, +
J FMUTE OFF
1997-11-05 5/10
TOSHIBA
TA8246H
QUIESCENT CURRENT
TOTAL HARMONIC DISTORTION THD
'ccq. VOUT(DC) - VCC
0 4 8 12 16 20 24 28 32 36
SUPPLY VOLTAGE VCC (v)
THD - POUT
f=10kHz
f=100Hz
0.3 0.5 1 3 5 10 30
OUTPUT POWER POUT (W)
OUTPUT VOLTAGE VOUT (DC)
TOTAL HARMON1C DISTORTION THD (%)
TOTAL HARMONIC DISTORTION THD (%)
30 50 100
0.3 0.5
THD - f
300 500 1k 3k 5k 10k 30k 50k 100k
FREQUENCY f (Hz)
THD - POUT
1 3 5 IO 30
OUTPUT POWER POUT (W)
1997-11-05 6/10
TOSHIBA TA8246H
POUT - Vcc GV - f
f=1kHZ Vcc=20V
RL=80 VOUT=(00-c7‘;5\;rms
A _ a m
E THD=10% a; RL=BQ
10 12 14 16 18 20 22 24 26 28 30 32 34 36 3050 100 3005001k 3k 5k 10k 30k50k100k
SUPPLY VOLTAGE Vcc (V) FREQUENCY f (Hz)
R.R. - f CT. - f
Vcc=20V Vcc=20V
a RL=BQ 10 RL-80
72. R =0 - VOUT=(00-;;5\;rms
_ Vripple=0-775Vrms A m
I'. (OdBm) g -20 Rg=1om
Q y-." -30
a E -40
U V’ -
l', 8 50
LIf -60
a: -70
3050 100 300 500 1k 3k 5k 10k 30k50k100k 30 50 100 300 500 1k 3k 5k 10k 30k50k100k
FREQUENCY f (Hz) FREQUENCY f (Hz)
VNO - Rg R.R. - Rg
"il Vcc = 20V Vcc = 20V
>" RL=80 "iii," RL=BQ
g B.W.--20-20kHz - fripie=100Hz
o re' vripple=0775vrmS
a ai (OdBm)
3050 100 300 500 1k 3k 5k 10k 30k50k100k 30 50 100 300 500 1k 3k 5k 10k 30k 50k100k
SIGNAL SOURCE RESISTANCE R9 (n) SIGNAL SOURCE RESISTANCE R9 (Q)
1997-11-05 7/10
TOSHIBA
TA8246H
Vcc = 20V
f- 1kHz
RL = MI
VOUT = 0.775Vrms
(OdBm)
CROSS TALK C.T, (dB)
30 50 100 300 500 1K 3K 5K 10K 30K50K100K
SIGNAL SOURCE RESISTANCE Rg (Q)
PD (MAX) - Vcc
MAXIMUM POWER DISSIPATION
PD(MAX) (W)
8 12 16 20 24 28 32
SUPPLY VOLTAGE Vcc (V)
VNO - Ta
OUTPUT NOISE VOLTAGE VNO (mvrms)
- 4O - 20 0 20 40 60 80 100
AMBIENT TEMPERATURE Ta (''C)
POWER DISSIPATION PD
QUIESCENT CURRENT
TOTAL HARMONIC DISTORTION THD (%)
PD - POUT
0 2 4 6 8 10 12 14
OUTPUT POWER POUT (W)
lccq - Ta
- 40 - 20 0 20 40 60 80 100
AMBIENT TEMPERATURE Ta CC)
THD - Ta
Vcc=20V
5 RL=8§Z
3 f=1kHz
POUT=2W
1 Operation
- 40 - 20 0 20 40 60 80 100
AMBIENT TEMPERATURE Ta (°C)
1997-11-05 8/10
TOSHIBA TA8246H
PD MAX - Ta
(O INFINITE HEAT SINK
© 4.1°C/w Al HEAT
© 9.5°C/W AI HEAT
POWER DISSIPATION PD MAX (W)
0 25 50 75 100 125 150 175 200
AMBIENT TEMPERATURE Ta (°C)
1997-11-05 9/10
TOSHIBA TA8246H
OUTLINE DRAWING
HZIP12-P-1.78B Unit : mm
15.72:K.?
1 .5 I YP
q--------
I i . l I
- 2.075TYP
a4ti,lvl
1.42TYP ""'_Hh05
143:03 _
1.45i0.2
11 31:0 3
6 5:03
0.55:0.1 giEotCi7EiEijl
1.11m _
22.9MAX
h 22.4w: _,
Weight : 4.04g (Typ.)
1997-11-05 10/10
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