KA2206B(12V) LINEAR INTEGRATED CIRCUIT - …12v).pdf · STEREO AUDIO AMPLIFIER DESCRIPTION...
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STEREO AUDIO AMPLIFIER DESCRIPTION The KA2206B is a monolithic integrated consisting of a 2- channel poweramplifier. It is designed for portable cassette players and radios. FEATURES * Higher output power Stereo: Po=2.3W(Typ.) at Vcc=9V,RL=4Ω Bridge: Po=4.7W(Typ.) at Vcc=9V,RL=8Ω * Low voltage distortion at high frequency * Small shock noise at the time of ON/OFF due to a built-in muting Circuit. * Closed loop voltage gain fixed 45dB( Bridge: 51dB) but available with external resistor added) HDIP-12 BLOCK DIAGRAM 7 8 9 10 11 2 3 4 Shock Noise Rejector Ripple Filter 12 Fin 5 6 Fin 1 Input Amp1 Input Amp2 Output Amp1 Output Amp2 BTL OUT OUT2 BS2 Power GND NF2 IN2 R.R PRE. GND IN1 NF1 POWER GND BS1 OUT1 Vcc KA2206B(12V) LINEAR INTEGRATED CIRCUIT SUM 1
Transcript of KA2206B(12V) LINEAR INTEGRATED CIRCUIT - …12v).pdf · STEREO AUDIO AMPLIFIER DESCRIPTION...
STEREO AUDIO AMPLIFIER
DESCRIPTION
The KA2206B is a monolithic integrated consisting of a 2-channel poweramplifier. It is designed for portable cassetteplayers and radios.
FEATURES
* Higher output powerStereo: Po=2.3W(Typ.) at Vcc=9V,RL=4ΩBridge: Po=4.7W(Typ.) at Vcc=9V,RL=8Ω
* Low voltage distortion at high frequency* Small shock noise at the time of ON/OFF due to a built-in
muting Circuit.* Closed loop voltage gain fixed 45dB( Bridge: 51dB) but
available with external resistor added)
HDIP-12
BLOCK DIAGRAM
7 8 9 10 11
234
ShockNoise
Rejector
RippleFilter
12Fin
56 Fin 1
InputAmp1
InputAmp2
OutputAmp1
OutputAmp2
BTL OUTOUT2BS2PowerGNDNF2IN2R.R
PRE.GND
IN1 NF1POWER
GNDBS1 OUT1 Vcc
KA2206B(12V) LINEAR INTEGRATED CIRCUIT
SUM 1
ABSOLUTE MAXIMUM RATINGS
Characteristic Symbol Value Unit
Supply Voltage VS 12 VPower Dissipation(note) PD 4 WJunction Temperature Tj 150 °CStorage Temperature Tstg -40+150 °CNOTE: Fin is soldering on PCB.
ELECTRICAL CHARACTERISTICS
(Tamb=25°,VCC=9V,f=1kHz, Rg=600Ω,Unless otherwise specified)Parameter Symbol Test conditions Min Typ Max Unit
Supply Voltage VS 9 12 VQuiescent Current IQ 40 50 mA
AV Stereo, Vin= - 45dBm 43 45 47Voltage gain
Bridge 49 51 53dB
Channel balance CB Stereo -1 0 +1 dBVoltage gain difference ∆AV ±1 dBInput impedance Ri 30 kΩ
RL=4Ω ,THD=1 0% 1.7 2.3Stereo
RL=8Ω ,THD=1 0% 1.3Output Power PO
Bridge RL=8Ω ,THD=1 0% 4.7W
Stereo Po=250mW,RL=4Ω 0.3 1.5Total Harmonic Distortion THD
Bridge - 0.5 -%
Input Resistance Ri 21 30 kΩ
Ripple rejection ratio RRStereo,RG=0, Vr=150mW,f=100Hz
40 46 dB
Cross-Talk C.T.RG=10kΩ;Vo=0dBm
40 55 - dB
APPLICATION INFORMATION
1. Stereo application
1). Fixed voltage gain(pin 4/9 connected to GNDdirectly)
Gv=20*log(R2/R1) (dB)
2). Variable voltage gain( refer to the right figure).Gv=20*log[R1/(R2+Rf)] (dB)
5/8
4/9
2/11R2
R1Rf
C1
KA2206B LINEAR INTEGRATED CIRCUIT
SUM 2
SUM 3
2. Bridge application
8
11
Rf
C1
R2
R1
R3
R4
5
4
2
1
9
C3 C4RL
C3
5K
50
1). Fixed voltage gain(pin 4/9 connected to GND directly)Gv=20*log(R2/R1) + 6 (dB)
2). Variable voltage gain( refer to the right figure).Gv=20*log[R1/(R2+Rf)] + 6 (dB)
APPLICATION CIRCUITS
128
9
4
1
6 Fin and 5, 7
10
11
3
2
100µF
0.15µF
100µF
0.15µF
RL
100µF
100µF
100µF
0.22µF
1000µF
Vin
Vcc
128
9
5
4
6 Fin and 1,7
10
11
3
2
100µF
0.15µF
470µF
100µF
100µF
0.22µF
1000µF
Vin 1
Vcc
100µF
0.22µF
Vin 2 470µF
0.15µF
100µF
OUT1
OUT2
RL
RL
Fig. 5 Bridge Application Fig.6 Stereo Application
KA2206B LINEAR INTEGRATED CIRCUIT
