TA7252AP ,5.9W AUDIO POWER AMPLIFIERTA7252APThe TA7252AP is audio power amplifier for consumer I I
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TA7252AP
5.9W AUDIO POWER AMPLIFIER
TOSHIBA TA7252AP
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA7252AP
5.9W AUDIO POWER AMPLIFIER
FEATURES
The TA7252AP is audio power amplifier for consumer
applications. It is designed for high power, low distortion
and low noise. Since the package is a 7pin SIP (Single
Inline Package), it greatly simplifies construction of a
power amplifier both in design and assembly. It is suitable
for car radio power amplifier.
Very Few External Parts
HSIP7-P-2.54A
Weight : 2.15g (Typ.)
High Power
: POUT(1)=5-9W (Typ.)
(Vcc=13.2v, f=1kHz, THD=10%, RL=4Q)
POUT (2) =9.6W (Typ.)
(VCC =13.2V, f=1kHZ, THD =10%, RL=ZQ)
Low Distortion
: THD=0.07% (Typ.)
(VCC =13.2V, f=1kHZ, POUT=th5W, RL--4n)
Low Noise
: VNO (1) = 0.7mVrms (Typ.)
(Vcc =13.2v, RL =40, GV = 53dB, Rg =10kn, BW = 20Hz--20kHz)
VNO (2) =0.4mVrms (Typ.)
(Vcc=13.2V, RL=4Q, GV=53dB, Rg=0, DIN Noise : DIN45405)
Protector : Thermal Shout Down, Over Voltage Protection, Short Protection
Operating Supply Voltage Range : 1/cc(opr.)=9--181/
961001 EBA1
OTOSHIBA 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 responsibility of the buyer, when utilizing TOSHIBA products, to observe standards of safety, and to avoid
situations in which a malfunction or failure of a TOSHIBA 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 the precautions
and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook.
OThe products described in this document are subject to foreign exchange and foreign trade control laws.
OThe information contained herein is presented only as a guide for the applications of our products. No responsibility
is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third
parties which may result from its use. No license is granted by implication or otherwise under any intellectual
property or other rights of TOSHIBA CORPORATION or others.
OThe information contained herein is subject to change without notice.
1997-07-01 1/9
TOSHIBA TA7252AP
BLOCK DIAGRAM
j, J" Li VCC
DC PROTECTOR
+ 3) BIAS
C? BOOTSTRAP
C1 I l 6 +
INPUT C - n + r1 + J I C5
AMP. 5 +" -
si.:!';-,,,? - 6UTPU1|I
8 Li Na 33.5%0 81 RL
APPLICATION INFORMATION
1. Voltage gain adjustment
The closed loop voltage gain (Gu) is determined by R1, R2
and Rf.
R1 + Rf+ R2
Gu=20tog W
When Rf=0, GV=53dB (Typ.) is given. (Fig.1)
GV - Rf
ft" N,
10 30 100 300
Rf (Q)
(Fig.2)
The recommended voltage gain is more than 40dB.
1997-07-01 2/9
TOSHIBA TA7252AP
2. Measures against oscillation
The purpose of capacitor : C6 is to prevent oscillation.
This capacitor needs to be small temperature coefficient.
So ceramic capacitor is unsuitable.
A voltage gain less than 40dB results occasionally in a plastic oscillation.
3. Precaution at print board design
(1) GND line
The GND pin is only one in this IC.
When there is some common impedance between the input side ping) (GND)
GND and the output side GND, electrical characteristics as THD Vcc LINE
degrade. o
3 GND lines (input, output and VCC sides) should be branched at (cr),
the pin@ as shown (Fig.3). INPUT LINE OUTPUT LINE
(2) It is recommended to refer the standard print board. (Fig.3)
STAN DARD P.C.B.
GND (Vcc)
GND(OUT)
TA7252AP C)
1997-07-01 3/9
TOSHIBA TA7252AP
MAXIMUM RATINGS (Ta=25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Peak Supply Voltage (0.25) VCC(surge) 48 V
DC Supply Voltage VCC (DC) 25 V
Operating Supply Voltage VCC(opr) 18 V
Output Current (Peak) |O(peak) 4.5 A
Power Dissipation PD 15 W
Operating Temperature Topr -30--75 "C
Storage Temperature Tstg - 55--150 ''C
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, Vcc=13.2V, RL=4Q, Rg =6000, f=1kHz, Ta =25°C)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Quiescent Current Iccto - VIN =0 - 3.5 3.5 mA
POUT (1) - THD = 10% 5.0 5.9 -
Output Power POUTQ) - THD=10%, RL=2Q - 9.6 - W
Total Harmonic THD(1) - PoUT=0-5W - 0.07 0.5 [y
Distortion THD(2) - POUT=1W, RL--2n - 0.10 - o
R =10k0 G =53dB
- g ' V -
o t t N . v It VNo(1) BW=20Hz-20kHz 0.7 1.8 v
u pu else o age v - Rg=0, GV=53dB - 0.4 - m rms
NO(2) DIN noise (DIN45405) filter .
Voltage Gain GV - VIN=0.5mVrms 51 53 55 dB
. . . . R=0 fri |=100Hz
Ri le Re ectlon Ratio R.R. - g ' ripple - -62 -so dB
pp J Vrippie=th775Vrms (OdBm)
Input Resistance RIN - f=1kHz - 30 - k0
TYP. DC VOLTAGE OF EACH TERMINAL
(VCC = 13.2V, Ta = 25°C)
TERMINAL No. 1 2 3 4 5 6 7
DC Voltage (V) 1.5 1.5 6.6 GND 6.6 12.6 vcc
TOSHIBA
TEST CIRCUIT
x.) I o
TA7252AP
INPUT C
BIAS I
PROTECTOR
BOOTSTRAP
+ 3' C5
AMP. 5 I 'a-
33.5kQ
100/”:
OUTPUTi LL 1000/sF
1997-07-01 5/9
TOSHIBA
TA7252AP
TOTAL HARMONIC DISTORTION THD (%)
TOTAL HARMONIC DISTORTION THD (%)
(mVrms)
OUTPUT NOISE VOLTAGE VNO
THD - POUT
Vcc=13.2V
Gv=53dB
f=10kHz
0.03 0.1 0.3 1 3
OUTPUT POWER POUT (W)
THD - f
Vcc--Ir2V
POUT=1W
Gv= 53dB
100 300 1k 3k 10k
FREQUENCY f (Hz)
Vcc=13.2V
DIN45405
GV=53dB
BW-- 20Hz-20kHz
DIN45405
GV=40dB
BW=20Hz-20kHz
100 300 1k 3k 10k 30k
SIGNAL SOURCE RESISTANCE R9 (Q)
TOTAL HARMONIC DISTORTION THD (%)
VOLTAGE GAIN GV
OUTPUT POWER POUT (W)
THD - POUT
Vcc--13.2V
5 f=1kHz
3 Gv=53dB
0.03 0.1 0.3 1 3 10
OUTPUT POWER POUT (W)
Vcc=132V
VIN--0.5mVrms
30 100 300 1k 3k 10k 30k 100k
FREQUENCY f (Hz)
POUT - Vcc
f=1kHz
16 THD=10%
0 4 8 12 16 20
SUPPLY VOLTAGE VCC (V)
1997-07-01 6/9
TOSHIBA TA7252AP
R.R. - f, Rg
Vcc=13.2V
g; GV=53dB
m: RL=4Q
m Vripple=0-775Vrms
g (OdBm)
if Cripple (C3)=47pF
5 cvcc (c7) = 0.47 pF
rl.,-,
Fel frip =100Hz
30 100 300 1k 3k 10k 30k 100k
RIPPLE FREQUENCY nipple (Hz)
SIGNAL SOURCE RESISTANCE Rg (Q)
ICCQ. V5 - Vcc
cr LLI
8 10 12 14 16 18 20 22 24 26
SUPPLY VOLTAGE VCC (V)
PD MAX. - Vcc
POWER DISSIPATION PD MAX.
8 10 12 14 16 18
SUPPLY VOLTAGE VCC (v)
1997-07-01 7/9
TOSHIBA TA7252AP
Icco. V5 - Ta THD, GV - Ta
100 A 0.5 59
vcc=13_2v 'i" ir.. f=1kHz
g. 80 g' F, 0yl GV (*) 55 a"
f) 8 a El.
S/ 2 S ",,,e"'" >
60 -' n: 02 51 0
_ O C) "
E > a / z
E 's 5 p" (*) Degradation of GV performance at g
a 40 {E g 0 2 Low Temperature is caused by increase 47 m
F- 8 g . of equivalent series resistance of 2
f, - E capacitor (C2). Ln
U a ttt I l 1 O
m Lu < >
'g 20 bt I 0.1 THD (POUT=0.5W) 43
_J ---
cr g S
0 0 39
- 40 - 20 0 20 40 60 80 - 40 - 20 0 20 4O 60 80
AMBIENT TEMPERATURE Ta (°C) AMBIENT TEMPERATURE Ta (°C)
PD - POUT PD - POUT
f=1kHz
A 6 R =40
Vcc-- 18V -
o - Ct
tk I n.
a /'"'''''''" "ss. THD-- 10% a
o 4 K o
E / / _ E
ir; 13 2 / / a
a --"'s / a / THD-- 10%
= 2 /'" "Ist" y
E 10 " _ E
2 /\ 2
0 4 8 12 16 0 4 8 12 16
OUTPUT POWER POUT (W) OUTPUT POWER POUT (W)
PD - Ta
INFINIT HEAT SINK
64cm2x2mmAt (7°C/W) HEAT SINK
S 25cm2x2mmAt (12°C/W) HEAT SINK
NO HEAT SINK
0 25 50 75 100 125 150 175
AMBIENT TEMPERATURE Ta ('C)
1997-07-01 8/9
TOSHIBA TA7252AP
OUTLINE DRAWING
HSIP7-P-2.54A Unit : mm
16.0i0.2 -
g g3.2:0.2 3.0io.3
_>/ j]
E:< LJ WW
0 I'I'IT
0.88TYP
I 0.6-0.1 Mews
2.54 1.2K0.1
17.0i0.2
[mmmmmmmmmmmn
Weight : 2.159 (Typ.)
1997-07-01 9/9
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