ST MICROELECTRONICS TDA 7263 Datasheet

Page 1
®
12 +12W STEREO AMPLIFIER WITH MUTING
WIDE SUPP LY VOLTAGE RANGE HIGH OUTPUT POWER
12+12W @ V MUTE FACILITY (POP FREE) WITH LOW
CONSUMPTION AC SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION
=28V, RL = 8Ω, THD=10%
S
TDA7263
DESCRIPTION
The TDA7263 is class AB dual audio power am­plifier assembled in the new Clipwatt package, specially designed for high quality sound applica­tion as HI-FI music centers and stereo TV sets.
TEST AND APPLICATION CIRCUIT
Clipwatt11
ORDERING NUMBER:
TDA7263
September 2003
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
1/8
Page 2
TDA7263
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Supply Voltage without Load 35 V Output Peak Current (repetitive f >20Hz) 2 A Total Power Dissipation (T
= 70°C) 25 W
case
Operating Temperature Range 0 to 70 °C Storage & Junction Temperature -40 to 150 °C
T
V
I
O
P T
op
stg,Tj
S
tot
PIN CONNECTION
BLOCK DIAGRAM
(Top view)
2/8
Page 3
THERMAL DATA
Symbol Parameter Value Unit
R
th j-case
Thermal resistance junction to case Max 3 °C/W
TDA7263
ELECTRICAL CHARACTERISTICS
Gv = 30dB; f = 1KHz; T
= 25°C unless otherwise specified.)
amb
(Refer to the stereo test and application circuit, V
= 28V; R
S
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
V
O
I
q
P
O
d Total Harmonic Distortion P
Supply Voltage 10 30 V Quiescent Output Voltage 13.5 V Total Quiescent Current 70 95 mA Output Power (RMS) d = 10% Tamb = 85°C
d = 1%
= 1W, f = 1kHz
O
f = 10 0Hz to 1 0KHz ; P
O
= 0.1 to 8W
10 12
9.5
0.02 0.2
0.5
CT Cross Talk RS = 10K; f = 1KHz 70 dB
= 10K; f = 10KHz 60 dB
R
S
R
f
L
f
H
e
N
Input Resistance 100 200 K
I
Low Frequency Roll-off (-3dB) 40 Hz High Frequency Roll-off (-3dB) 80 KHz Total Input Noise Voltage A Curve; RS = 10K 1.5 mV
f = 22Hz to 22KHz; RS = 10K 310µV
SVR Supply Voltage Rejection
= 10K; f = 100Hz; Vr = 0.5V 45 60 dB
R
S
(each channel)
T
j
Thermal Shutdown Junction
145 °C
Temperature
MUTE FUNCTION
VT
VT
ATT
I
qMUTE
MUTE PLAY
Mute Threshold 1 1.6 V Play Threshold 4.5 V Mute Attenuation 70 100 dB
AM
Quiescent Current @ Mute 7 10 mA
= 8
Ω;
L
W W
%
TYPICAL CHARACTERISTICS
otherwise specified)
Figure 1:
Output Power vs. Supply Voltage
(referred to the typical Application Circuit, V
Figure 2:
Distortion vs. Output Power
= 28V, RL = 8Ω, unless
S
3/8
Page 4
TDA7263
Figure 3:
Figure 5:
Quiescent Current vs. Supply Voltage
Crosstalk vs. Frequency
Figure 4:
Figure 6:
Supply Voltage Rejection vs.
Frequency
Output Attenuation & Quiescent
Current vs. V
pin3
Figure 7:
4/8
Total Power Dissipation vs. Output
Power
Figure 8:
Maximum allowable Power dissipation
vs. Ambient Temperature
Page 5
TDA7263
APPLICATION SUGGES TION
The recommended values of the components ar e those shown on the typical application circuit. Different values can be used; the following table can help the designer.
Component
R1 and R3 1.5K Close loop gain setting (*) Increase of gain Decrease of gain R2 and R4 47 Close loop gain setting (*) Decrease of gain Increase of gain R5 and R6 4.7 Frequency stability Danger of oscillations C1 and C2 100nF Input DC decoupling Higher SVR Higher low frequency cutoff C3 47µF - Ripple Rejection
C4 100nF Supply Voltage Bypass Danger of oscillations C5 1000µF Supply Voltage Bypass C6 and C7 47µF Feedback input DC
C8 and C9 0.1µF Frequency stability Danger of oscillations C10 and C11 1000µF Output DC decoupling Higher low-frequency cut-off
(*) Closed loop gain must be higher than 26dB
Figure 9:
Recomm.
Value
- Mute time constant
decoupling
P.C. Board and Component Layout (1:1 scale)
Purpose Larger Than Smaller Than
Increase of the Switch-on time
Increase of the Switch-on time
- Degradation of SVR
- Worse turn-off pop by mut ing
Danger of Switch-on time
Note:
Use either C1, C2 (Polyester) or C1(*), C2(*) (Electrolytic) but not both.
5/8
Page 6
TDA7263
BUILT-IN PROTECTION SYSTEMS
THERMAL SHUT-DOWN The presence of a thermal limiting circuit offers
the following advantages:
1-an overload on the output (even if it is perma-
nent), or an excessive ambient temperature can be easily withstood.
2-the heatsink can have a smaller factor of
safety compared with that of a conventional circuit. There is no device damage in the case of excessive junction temperature; if for any reason the junction temperature increases up to 145°C. the thermal shutdown simply re-
duces the output power and therefore the power dissipation.
The maximum allowable power dissipation de­pends upon the thermal resistance junction-ambi­ent. Figure 8 shows the dissipable power as a function of ambient temperature for different heatsink thermal resistance.
SHORT CIRCUIT (AC CONDITIONS) The TDA7263 can withstand accidental short cir-
cuits across the speaker made by a wrong con­nection during normal play operation.
6/8
Page 7
TDA7263
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
A 3.2 0.126 B 1.05 0.041 C 0.15 0.006 D 1.5 0.059 E 0.49 0.55 0.019 0.002
F 0.77 0.8 0.88 0.030 0.031 0.035
F1 0.15 0.006
G 1.57 1.7 1.83 0.062 0.067 0.072 G1 16.87 17 17.13 0.664 0.669 0.674 H1 12 0.480 H2 18.6 0.732 H3 19.85 0.781
L 17.9 0.700 L1 14.55 0.580 L2 10.7 11 11.2 0.421 0.433 0.441 L3 5.5 0.217
M 2.54 0.100
M1 2.54 0.100
mm inch
OUTLINE AND
MECHANICAL DATA
Weight: 1.80gr
Clipwatt11
0044448
7/8
Page 8
TDA7263
Information furnishe d is beli eved to be accu rate and reliable. However, STMicroelec tronics assumes no res ponsibility for the consequences of use of such i nformation nor for any i nfringement of patents or ot her rights of third par ties which may result from its use. No license i s granted by imp lication or otherwi se under a ny patent or patent rights of STMicro electronics . Speci fications ment ioned in this publicat ion are subject to change without notic e. This public ation supers edes and replaces all information prev iously supplied. STMic roelec tronic s products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelect roni cs.
All other names are the property of their respective owners
© 2003 STMicr oel ect roni cs - All rights reserved
STMicroelectronics GROUP OF COMPANIES
Australia – Belgium - Brazi l - Canada - China – Czec h Republ i c - Finland - France - Germany - Hong Kong - India - Israel - Italy - Ja pa n -
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States
www.st.com
8/8
Loading...