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TDA7496L
2W+2W AMPLIFIER WITH DC VOLUME CONTROL
2W+2W OUTPUT POWER RL = 8 @THD = 10% VCC = 14V ST-BY AND MUTE FUNCTIONS LOW TURN-ON TURN-OFF POP NOISE LINEAR VOLUME CONTROL DC COUPLED WITH POWER OP. AMP. NO BOUCHEROT CELL NO ST-BY RC INPUT NETWORK SINGLE SUPPLY RANGING UP TO 15V SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION INTERNALLY FIXED GAIN SOFT CLIPPING VARIABLE OUTPUT AFTER VOLUME CONTROL CIRCUIT POWERDIP (14+3+3) PACKAGE DESCRIPTION The TDA7496L is a stereo 2W+2W class AB power amplifier assembled in the @ Powerdip BLOCK DIAGRAM
VAROUT_R GND 7 1,2,3,13, 18,19,20 9 470nF 30K VOLUME + OP AMP S1 ST-BY 11 MUTE/STBY PROTECTIONS VOLUME INL 470nF 4 30K + OP AMP SVR 470F VOLUME 10 6 5 VAROUT_L +5V
D97AU596A
Powerdip (14+3+3) ORDERING NUMBER: TDA7496L
14+3+3 package, specially designed for high quality sound, TV and Monitor applications. Features of the TDA7496L include linear volume control, Stand-by and mute functions.
VS 15,16
INR
14
1000F OUTR
STBY 10K
+5V S_GND
60K
12
MUTE
1F S2 MUTE
+5V
17
OUTL 1000F
100nF
300K
April 1998
1/10
TDA7496L
ABSOLUTE MAXIMUM RATINGS
Symbol VS VIN Ptot Tamb Tstg, Tj V6 DC Supply Voltage Maximum Input Voltage Total Power Dissipation (Tcase = 60C) Ambient Operating Temperature Storage and Junction Temperature Volume CTRL DC voltage Parameter Value 26 8 6 0 to 70 -40 to 150 7 Unit V Vpp W C C V
PIN CONNECTION
GND GND GND INL VAROUT_L VOLUME VAROUT_R N.C. INR SVR 1 2 3 4 5 6 7 8 9 10
D97AU597A
Rth with "on board" Square Heatsink vs. copper area.
20 19 18 17 16 15 14 13 12 11 GND GND GND OUTL VS VS OUTR GND MUTE STBY
30 0 4 8 12 Area(cm2) 40 50
PC BOARD
Rthj-a (C/W)
D97AU675
COPPER AREA 35 THICKNESS
60
THERMAL DATA
Symbol Rth j-pins Rth j-amb (*) Parameter Thermal Resistance Junction-pins Thermal Resistance Junction-ambient max. max. Value 15 50 Unit C/W C/W
(*) Mounted on PCB with no heatsink
ELECTRICAL CHARACTERISTICS (Refer to the test circuit VS = 14V; RL = 8, Rg = 50, Tamb = 25C).
Symbol VS Iq DCVOS VO PO THD Ipeak Vin GV GvLine AMin VOL BW 2/10 Parameter Supply Voltage Range Total Quiescent Current Output DC Offset Referred to SVR Potenial Quiescent Output Voltage Output Power Total Harmonic Distortion Output Peak Current Input Signal Closed Loop Gain Monitor Out Gain Attenuation at Minimum Volume Test Condition Min. 10 Typ. 25 200 7 2 1.3 0.4 0.7 28.5 -1.5 80 0.9 30 0 0.6 2.8 31.5 1.5 Max. 18 50 Unit V mA mV V W W % A Vrms dB dB dB MHz
No Input Signal
THD = 10%; RL = 8; THD = 1%; RL = 8; GV = 30dB; PO = 1W; f = 1KHz; (internally limited) Vol Ctrl > 4.5V Vol Ctrl > 4.5V; Zload > 30K Vol Ctrl < 0.5V
1.6
TDA7496L
ELECTRICAL CHARACTERISTICS (continued)
Symbol eN Parameter Total Output Noise Test Condition f = 20Hz to 22KHz Play, max volume f = 20Hz to 22KHz Play, max attenuation f = 20Hz to 22KHz Mute Min. Typ. 500 100 60 5 22.5 2 35 55 8 30 30 39 65 150 160 3.5 1.5 3.5 0.6 65 80 -5 1 0.2 1.5 1 Max. 800 250 150 Unit V V V V/s K K dB dB C C V V V V mA dB A A A A A
SR Ri RVar Out Rload Var Out SVR
Slew Rate Input Resistance Variable Output Resistance Variable Output Load Supply Voltage Rejection
100
f = 1kHz; max volume CSVR = 470F; VRIP = 1Vrms f = 1kHz; max attenuation CSVR = 470F; VRIP =1Vrms
TM Ts VST ON VST OFF VM ON VM OFF IqST-BY AMUTE IstbyBIAS
Thermal Muting Thermal Shut-down Stand-by ON Threshold Stand-by OFF Threshold Mute ON Threshold Mute OFF Threshold Quiescent Current @ Stand-by Mute Attenuation Stand-by bias current
MUTE STAND-BY & INPUT SELECTION FUNCTIONS
50 Stand by on VST-BY = 5V VMUTE = 5V Play or Mute Mute Play
-20
ImuteBIAS
Mute bias current
5 2
APPLICATION SUGGESTIONS The recommended values of the external components are those shown on the application circuit of figure 1A. Different values can be used, the following table can help the designer.
COMPONENT R1 R2 P1 C1 C2 C3 C4 C5 C6 C7 C8 C9 SUGGESTION VALUE 300K 10K 50K 1000F 470nF 470nF 470F 100nF 1000F 1F 1000F 100nF PURPOSE Volume control circuit Mute time constant Volume control circuit Supply voltage bypass Input DC decoupling Input DC decoupling Ripple rejection Volume control time costant Output DC decoupling Mute time costant Output DC decoupling Supply voltage bypass LARGER THAN SUGGESTION Larger volume regulation time Larger mute on/off time SMALLER THAN SUGGESTION Smaller volume regulation time Smaller mute on/off time
Danger of oscillation Lower low frequency cutoff Lower low frequency cutoff Better SVR Larger volume regulation time Lower low frequency cutoff Larger mute on/off time Lower low frequency cutoff Higher low frequency cutoff Higher low frequency cutoff Worse SVR Smaller volume regulation time Higher low frequency cutoff Smaller mute on/off time Higher low frequency cutoff Danger of oscillation
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TDA7496L
Figure 1A. Application Circuit.
+VS C1 1000F VAROUT_R PW_GND 1,2,3,13, 18,19,20 9 C2 470nF 30K 7 VOLUME + OP AMP S1 STBY 11 MUTE/STBY PROTECTIONS VOLUME INL C3 470nF 4 30K + OP AMP SVR C4 470F VOLUME 10 6 5 VAROUT_L VOL P1 50K LOG +5V
D97AU598A
C9 0.1F VS 15,16
INR
14
C8 1000F
PW_GND OUTR
+5V
12 60K 17 C7 1F
R2 10K
S_GND +5V
S2 MUTE OUTL
C6 1000F
PW_GND
C5 100nF
R1 300K TP1
Figure 1B. PCB and Component Layout of the Fig. 1A (1.25:1 scale)
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TDA7496L
MUTE STAND-BY TRUTH TABLE
MUTE H L H L ST-BY H H L L OPERATING CONDITION STANDBY STANDBY MUTE PLAY
Turn ON/OFF Sequences (for optimizing the POP performances) A) USING MUTE AND STAND-BY FUNCTIONS
VS (V)
ST-BY pin#11 (V) 5
VSVR pin#10(V)
2.5V MUTE pin#12 (V) 5
INPUT (mV)
VOUT (V)
OFF
STBY MUTE
PLAY
MUTE STBY
OFF
IQ (mA)
D97AU683
B) USING ONLY THE MUTE FUNCTION To simplify the application, the stand-by pin can be connected directly to Ground. During the ON/OFF transitions is recommend to respect the following conditions.
- At the turn-on, the transition mute - play must be made when the SVR pin is higher than 2.5V - At the turn-off, the TDA7496L must be brought to mute from the play condition when the SVR pin is higher than 2.5V.
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TDA7496L
Quiescent current vs. Supply Voltage
Output DC Voltage vs. Supply Voltage
34 32 30 28 26 24 22 20 18
Iq (mA)
10 9.5 9
Vodc (V)
Vi=0
8.5 8 7.5 7 6.5 6 5.5 5 4.5 4
Vi=0
16 10
11
12
13
14
15
16
17
18
10
11
12
13
14
15
16
17
18
Supply Voltage (V)
Supply Voltage (V)
Output DC Offset vs. Supply Voltage
Output Power vs. Supply Voltage
300 280 260 240 220 200 180 160 140 120
Vodc-Vsvr (V)
4 3.5
Ouput Power (W)
THD=10 % Vi=0
3 2.5 2 1.5
Rl=8 Ohm F= 1 KHz
THD=1 %
1 0.5 0 11 12 13 14 15 16 17 18
100 10
10
11
12
13
14
15
16
17
18
Supply Voltage (V)
Supply Voltage (V)
Distortion vs. Output Power
Closed Loop gain vs. Frequency
10
Distortion (%)
32 31 30 29 28 27 26 25
Closed Loop Gain (dB)
Vs=12V Rl=8 Ohm
1
F=15 KHz
0.1
24 23 22 21 0.6 0.8 1 1.2 1.4 1.6 1.8 2 20 0.02 0.2 2
Rl=8 Ohm Pout=0.5W Cin=470nF Cout =1000uF Csvr=470 uF
F=1 KHz
0.01 0 0.2 0.4
20
Output Power (W)
Frequency (KHz)
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TDA7496L
St-By Attenuation vs. Vpin 11
Mute Attenuation vs. Vpin 12
20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140
Stand-by Attenuation (dB)
Rl=8 Ohm 0 dB @ Pout=1W
20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 2 2.5 3 3.5 4 4.5 5
Mute Attenuation (dB)
Rl=8 Ohm 0 dB @ Pout=1W
0
0.5
1
1.5
0
0.4
0.8
1.2
1.6
2
2.4
2.8
3.2
3.6
4
4.4
4.8
5.2
Vpin # 11 (V)
Vpin # 12 (V)
PIN DESCRIPTION PIN: SVR
VS VS VS
+ 30K
OUT L
20K SVR 20K
6K
1K
6K
1K 30K OUT R -
100A
+
D97AU585A
7/10
TDA7496L
PINS: INL, INR
VS
PINS: VAROUT-L, VAROUT-R
VS
6K INn 30K
D97AU590
500A
VAROUT-L
D97AU589
SVR
PIN: VOLUME
PIN: MUTE
VS 10A VOL
VS MUTE 200 10K
50A
D97AU592
D97AU591
PINS: PW-GND, S-GND
PINS: OUT R, OUT L
VS
VS
OUT
GND
D97AU593
D97AU588
PIN: STBY
VS
10A STBY 200
65K
D97AU594
8/10
TDA7496L
POWERDIP20 PACKAGE MECHANICAL DATA
DIM. MIN. a1 B b b1 D E e e3 F I L Z 3.30 1.27 8.80 2.54 22.86 7.10 5.10 0.130 0.050 0.38 0.51 0.85 0.50 0.50 24.80 0.346 0.100 0.900 0.280 0.201 0.015 1.40 mm TYP. MAX. MIN. 0.020 0.033 0.020 0.020 0.976 0.055 inch TYP. MAX.
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TDA7496L
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1998 SGS-THOMSON Microelectronics - Printed in Italy - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
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