View SA7269_4804809.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

SA7269
2-CH AUDIO POWER AMPLIFIER(10W X2)
DESCRIPTION
The SA7269 is a monolithic integrated circuit in HSIP package, intended for use as dual audio frequency class AB amplifier.
FEATURES
* Wide supply voltage range up to 40V ABS MAX. * Split supply operation. * High output power: 10+10W @ THD=10%, RL=8 , Vs=14V * Mute/stand-by function. * Few external components. * Short circuit protection. * Thermal overload protection.
HSIP-15 HSIP-11
APPLICATIONS
* Hi-Fi music centers * Stereo TV sets
ORDERING INFORMATION
Part No. SA7269 SA7269A Package HSIP-11 HSIP-15
BLOCK DIAGRAM
Note: Figures for the SA7269.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2
2006.05.25 Page 1 of 11
SA7269
ABSOLUTE MAXIMUM RATING
Characteristics DC Supply Voltage Output Peak Current (Internally Limited) Power Dissipation Tcase=70C Storage And Junction Temperature Supply voltage to guarantee short-circuit protection Thermal Resistance From Junction To Case (Max) normal. Symbol Vs Io Ptot Tstg, Tj Vs(sc) Rth(j-c) Rating 44 3 40 -40~+150 18(*) 2 Unit V A W C V C/W
(*)Maximum supply voltage to guarantee short-circuit to Vs is 18V, and to GND short-circuit protection is
ELECTRICAL CHARACTERISTICS
(Refer to the test circuit, Vs14V; RL=8; Rs=50; Gv=30dB; f=1KHz; Tamb=25C, unless otherwise specified.) Characteristics Supply Range Total Quiescent Current Input Offset Voltage Non Inverting Input Bias Current Symbol Vs Iq Vos Ib THD=10%; RL=8; Output Power Po Vs=12.5V; RL=4 THD=1%; RL=8; Vs=12.5V; RL=4 RL=8; Po=1W; f=1KHz RL=8; Po=0.1~5W; Total Harmonic Distortion THD f=100Hz~15KHz RL=4; Po=1W; f=1KHz RL=4; Vs=10V; Po=0.1~5W; f=100Hz~15KHz Cross Talk Slew Rate Open Loop Voltage Gain Total Input Noise CT SR GV eN A curve f=20Hz~22KHz f=1KHz f=10KHz 50 6.5 70 60 8 80 3 4 8 dB dB V/s dB V V 0.02 1 % % 7.5 7.5 0.03 0.7 W W % % 8 7.5 10 10 W W -25 500 Test conditions Min. 5 50 Typ. Max. 20 100 +25 Unit V mA mV nA
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2
2006.05.25 Page 2 of 11
SA7269
(Continued)
Characteristics Input Resistance Supply Voltage Rejection (each channel) Thermal Shut-down Junction Temperature Mute Function [ref: +Vs] Mute /Play Threshold Mute Attenuation Stand-by Function [ref: +Vs] Stand-by /Mute Threshold Stand-by Attenuation Quiescent Current @ Stand-by
Symbol Ri SVR Tj
Test conditions
Min. 15
Typ. 20 60 145
Max.
Unit K dB C
Fr=100Hz; Vripple=0.5Vrms
VTMUTE AM VTST-BY AST-BY Iq ST-BY
-7 60 -3.5
-6 70 -2.5 110 3
-5
V dB
-1.5 6
V dB mA
PIN CONFIGURATION
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2
2006.05.25 Page 3 of 11
SA7269
PIN DESCRIPTION
Pin No. HSIP-11 1 2 3 4 5 6 7 8 9 10 11 HSIP-15 2 3 5 6 7 8 9 10 12 13 14 1,4,11,15 Pin Name -Vs OUT 1 +Vs OUT 2 MUTE / ST-BY -Vs IN+(2) IN-(2) GND IN-(1) IN+(1) NC I/O -O -O I -I I -I I -Pin Description Negative power Output1 Positive power Output2 Mute /stand-by function Negative power Inverting Input 2 Non inverting input 2 Ground Non inverting input 1 Inverting input 1 Not connected
FUNCTION DESCRIPTION
MUTE STAND-BY FUNCTION The MUTE/ST-BY controls the amplifier status by two different thresholds, referred to +Vs. O O O When MUTE/ST-BY higher than = +Vs - 2.5V the amplifier is in Stand-by mode and the final stage generators are off. When MUTE/ST-BY is between +Vs - 2.5V and +Vs- 6V the final stage current generators are switched on and the amplifier is in mute mode When MUTE/ST-BY is lower than +Vs - 6V the amplifier is play mode.
Power Dissipation and Heat Sinking The SA7269 must always be operated with a heat sink. In order to determine the appropriate heat sink for a given application, the power dissipation of the SA7269 in that application must be known. When the load is resistive, the maximum average power that the IC will be required to dissipate is approximately: PD(MAX)=Vs2/2RL+PQ Where VS is the total power supply voltage across the SA7269, RL is the load resistance PQ is the quiescent power dissipation of the amplifier. The above equation is only an approximation which assume an " ideal"class B output stage and constant power dissipation in all other parts of the circuit. The curves of " Power Dissipation vs. Power Output"give a better representation of the behavior of the SA7269 with various power supply voltages and resistive loads. As an example, if the SA7269is operated on a 14V power supply with a resistive load of 8, it can develop up to 11.5W of internal power dissipation. If the die temperature is to remain below 150C for ambient temperatures up to 50C, the total junction-to-ambient thermal resistance must be less than: (150C 50C)/11.5W 8.7C/W Using Rth(j-c) = 2C /W, the sum of the case-to-heat-sink interface thermal resistance and the heat-sink-toambient thermal resistance must be less than 6.7C/W. The case-to-heat-sink thermal resistance of the HSIP-11
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2
2006.05.25 Page 4 of 11
SA7269
package varies with the mounting method used. A metal-to-metal interface will be about 1C /W if lubricated, and about 1.2C /W if dry. If a mica insulator is used, the thermal resistance will be about 1.6C /W lubricated and 3.4C /W dry. For this example, we assume a lubricated mica insulator between the SA7269 and the heat sink. The heat sink thermal resistance must then be less than: 8.7C/W-2C/W-1.6C/W 5.1C/W The thermal requirements can become more difficult when an amplifier is driving a reactive load. For a given magnitude of load impedance, a higher degree of reactance will cause a higher level of power dissipation within the amplifier. As a general rule, the power dissipation of an amplifier driving a 60 reactive load (usually considered to be a worst-case loudspeaker load) will be roughly that of the same amplifier driving the resistive part of that load. For example, a loudspeaker may at some frequency have an impedance with a magnitude of 8 and a phase angle of 60. The real part of this load will then be 4, and the amplifier power dissipation will roughly follow the curve of power dissipation with a 4 load.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2
2006.05.25 Page 5 of 11
SA7269
TYPICAL APPLICATION CIRCUIT IN SPLIT SUPPLY
+Vs C4 1000 F C5 0.1 F
Vpin5
3 +Vs 5 MUTE/ST-BY OUT 2 4 R5 18K R7 4.7 C8 100nF
IN+(2) C1 1F
7 IN+(2)
IN-(2) 8
SA7269
9 GND OUT 1 2
R6 560 R8 18K
IN+(1) C2 1F
11 IN+(1) -Vs 1
IN-(1) 10 -Vs 6 C6 1000 F
R9 560
R10 4.7 C9 100nF
-Vs
C7 0.1 F
+Vs SW1 B R1 A 10K Dz SW2 A R4 15K B R3 18K R2 15K Q1 C3 1F SW1 Vpin5 A A B B SW2 A B B A Stand-by Stand-by Mute Play
Note: Figures for the SA7269.
TYPICAL APPLICATION CIRCUIT IN SINGLE SUPPLY
Note: Figures for the SA7269.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2
2006.05.25 Page 6 of 11
SA7269
ELECTRICAL CHARACTERISTICS CURVES
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2
2006.05.25 Page 7 of 11
SA7269
(Continued)
Power dissipation (W)
PC BOARD AND COMPINENTS LAYOUT OF THE TYPICAL APPLICATION IN SPLIT SUPPLY
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
Power dissipation (W)
REV:1.2
2006.05.25 Page 8 of 11
SA7269
APPLICATION SUGGEST
The recommended values of the external components are those shown are the Typical Application Circuit in Split Supply: COMPONENTS RECOMMENDED VALUE 10K 15K 18K 15K 18K 560 4.7 1F 1F 1000F 0.1F 0.1F 5.1V BC107 25dB. LARGER THAN PURPOSE RECOMMENDED VALUE Mute Circuit Mute Circuit Mute Circuit Mute Circuit Closed Loop Gain Setting* Frequency Stability Input DC Decoupling St-By/Mute Time Constant Supply Bypass Supply Bypass Frequency Stability Mute Circuit Mute Circuit Larger On/Off Time Increase of Dz Biasing Current VMUTE/STBY Shifted Downward VMUTE/STBY Shifted Upward VMUTE/STBY Shifted Upward Increase of Gain Decrease of Gain Danger of Oscillations Danger of Oscillations Higher Low Frequency Cutoff Smaller On/Off Time Danger of Oscillations Danger of Oscillations VMUTE/STBY Upward VMUTE/STBY Downward VMUTE/STBY Downward Shifted Shifted Shifted SMALLER THAN RECOMMENDED VALUE
R1 R2 R3 R4 R5, R8 R6, R9 R7, R10 C1, C2 C3 C4, C6 C5, C7 C8, C9 Dz Q1
* Closed loop gain has to be
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.2
2006.05.25 Page 9 of 11
SA7269
PACKAGE OUTLINE
HSIP-11
19.900.20 2.300.30 1.500.10 4.750.25
Unit: mm
3.750.10
0.910.05
2.500.15
1.700.25 4.550.30 5.080.35 17.000.25 20.050.20
0.520.03
HSIP-15
4.000.15
Unit: mm
2.800.20
10.700.25
17.750.25
18.680.35
22.100.40
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
4.600.20
1.000.15
REV:1.2
22.300.30
2006.05.25 Page 10 of 11

▲Up To Search▲

Price & Availability of SA7269

	To Download SA7269 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .