KIA6221AH Datasheet PDF - KEC

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KIA6221AH
KEC

Part Number KIA6221AH
Description 30W BTL DUAL AUDIO POWER AMPLIFIER
Page 13 Pages


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SEMICONDUCTOR
KIA6221AH
TECHNICAL DATA
BIPOLAR LINEAR INTEGRATED CIRCUIT
30W BTL DUAL AUDIO POWER AMPLIFIER
The thermal resistance 0 j - c of KIA6221AH package
CPP-17 (Compact Power Package 17pin), designed for
low thermal resistance, has high efficiency of heat
radiation.
The temperature rise of chip can be reduced, and
the influence from the degradation of the features due
to the temperature rise at the high output can also be
reduced.
This stereo audio power IC, designed for car audio
use, has two built-in channels to reduce the
characteristic difference between L and R channels.
FEATURES
* Low Thermal Resistance
: 6 j-c=1.5°C/W (Infinite heat sink)
* High Power
:POUT( 1)=30W(Typ. )/Channel
(Vcc=14.4V, f=lkHz, THD=10%, RL=2&)
:POUT(2)=26W(Typ. )/Channel
(Vcc=13.2V, f=lkHz, THD=10%, RL=2&)
;POUT(3)=19W(Typ. )/Channel
(Vcc=13.2V, f=lkHz, THD=10%, RL=4&)
* Low Distortion
:THD=0.04%(Typ.) (VCc=13.2V, f=lkHz, POUT=1W, R l = 4 & , Gv=50dB)
* Low Noise
rms (Typ.)
(Vcc=13.2V, RL=4 Q, Gv=50dB, Rg=0&, BW=20Hz~ 20kHz)
* Built-in stand-by function (With @ pin set at LOW, Power is turned OFF.)
:IsB=ljuA(Typ.)
* Built-in various protection circuits
Protection circuits : thermal shut down, over voltage, Out—>Vcc short.
Out^GND short and OUT-OUT short.
* Operating supply voltage : Vcc=9~18V
CPP-17
1994. 10 .25
Revision No : 0
KEC
1/13



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KIA6221AH
MAXIMUM RATINGS (Ta=25°C)
CHARACTERISTIC
SYMBOL RATING
UNIT
Peak Supply Voltage (0.2sec) Vcc surge
50
V
DC Supply Voltage
Vcc DC
25
V
Operating Supply Voltage
Vcc opr
18
V
Output Current
(Peak)
Io(peak)
9
A
Power Dissipation
Operating Temperature
Storage Temperature
P D 50 W
T0pr - 3 0 - 8 5
°c
T s t g - 5 5 - 1 5 0 °c
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, Vcc=13.2V, RL=4ffi, f=lkHz, Ta=25°C)
CHARACTERISTIC
SYMBOL
TEST
CIRCUIT
T E S T CONDITION
Quiescent Supply Current
ICCQ
- VlN=0
Output Power
POUT(1)
POUT(2)
-
-
Vcc=14.4V, THD=10%, RL=2£
THD=10%, RL=2£
POUT(3)
-
THD=10%
Total Harmonic Distortion
THD
- POUT=1W
Voltage Gain
Output Noise Voltage
Ripple Rejection Ratio
Input Resistance
Output Offset Voltage
Gv - VouT=0dB
VNO - R g = 0 £ , BW=20Hz — 20kHz
R.R
fraP=100Hz, Rg=600£2,
- Vmp=0dBm
RIN
-
-
Voffset - ViN=0
Current at Stand-by State
ISB
-
-
Cross Talk
(D Pin Control Voltage
® Pin Control Voltage
Channel Voltage Gain Ratio
C.T
VMUTE
VsB
AGv
-
-
-
-
Rg=600£, VouT=0dBm
Mute—>ON (Power^OFF)
Stand-by^OFF (Power-^ON)
-
MIN. TYP. MAX. UNIT
- 120 250 mA
- 30 -
17 26 -
16 19 -
W
-
0.04 0.4
%
48 50 52 dB
-
0.30
0.70 MVRMS
40
54 -
dB
- 30 -
-100
0 100 mV
- 100 150 fiA
-
60 -
dB
-
1.0 2.0
V
2.5 - Vcc V
-1.0
0 1.0
dB
1994. 10 .25
Revision No : 0
KEC
2/13



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KIA6221AH
BLOCK DIAGRAM AND TEST CIRCUIT (Gv=50dB)
O VCC
Active—High
(Power-ON)
IV
Active—High
(Power-ON)
1994. 10 .25
Revision No : 0
KEC
3/13



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KIA6221AH
CAUTIONS AND APPLICATION METHOD
(Description is made only on the single channel.)
1. Voltage Gain Adjustment
Amp 1 :Pre—Amp
Amp2:Phase Amp
Amp3:Power Amp(Flat-Amp)
Amp4:Power Amp(Flat—Amp)
Fig -1
This IC has the amplifier construction as shown in Fig.l. The pre-Amp(Amp 1) is
provided to the primary stage, and the input voltage is amplified by the flat Amps.
Amp 3 and 4 of each channel through the phase Amp(Amp 2).
Since the input offset is prevented by pre-Amp when Vcc is set to ON, this circuit
can remarkably reduce the pop noise.
The total closed loop gain Gv of this IC can be obtained by expression below when
the closed loop voltage gain of Amp 1 is Gv 1.
Gvl=201og R1 + (Rf+R2)
Rf+R2
(dB)
(1)
The closed loop voltage gain of power Amp, Amp 3 and Amp 4 is fixed at Gv3^Gv4=20dB.
Therefore, the total closed circuit voltage gain Gv is obtained through BTL
connection by the expression below.
Gv=Gvl+Gv3+6(dB)
(2)
1994. 10 .25
Revision No : 0
KEC
4/13



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KEC
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