SGS Thomson Microelectronics TDA7299 Datasheet
TDA7299
SOUND 2W MONO AMPLIFIER
■
CAN DELIVER 2W THD 10% 12V/8
■
INTERNAL FIXED GAIN 20dB
■
NO BOUCHEROT CELL
■
THERMAL PROTECTION
■
AC SHORT CIRCUIT PROTECTION
■
SVR CAPACITOR FOR BETTER
Ω
RIPPLEREJECTION
■
LOW TURN-ON/OFF POP
■
STAND-BY MODE
DESCRIPTION
The device TDA7299 is a new technology Mono Audio Amplifier in SO package specially designed for
12V sound cards application.
Thanks to the fully complementary output configura-
BLOCK DIAGRAM
SO8 (4+4)
ORDERING NUMBER:
TDA7299
tion the device delivers a rail voltage swing without
need of boostrap capacitors.
IN
47µF
September 2002
0.1µF
IN
SVR
V
S
100µF
470µF
+
VS=12V
-
OUT
8Ω
GND
D94AU160A
1/7
TDA7299
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
I
O
T
op
T
T
stg
Operating Supply Voltage 18 V
S
Output Put Peak Current 1.5 A
Operating Temperature Range 0 to 70 °C
Junction Temperature 150 °C
j
Storage Temperature Range -40 to 125 °C
PIN CONNECTION
THERMAL DATA
(Top view)
V
S
OUT
SVR
IN GND
2
3
4
D94AU162
8
7
6
5
GND1
GND
GND
Symbol Parameter Value Unit
R
th j-amb
R
th j-case
ELECTRICAL CHARACTERISTICS
(T
amb
Symbol Parameter Test Condition Min. Typ. Max. Unit
R
Thermal Resistance Junction to ambient (on PCB) 80 °C/W
Thermal Resistance Junction to case 20 °C/W
= 25°C; VS = 12V; RL = 8Ω; f = 1KHz; unless otherwise specified.)
V
Supply Voltage Range 4.5 18 V
S
I
Quiescent Current 20 30 mA
S
I
Stand-By Current Pin 2 shorted to GND 0.3 mA
sb
V
Quiescent Output Voltage 6 V
O
Voltage Gain 20 dB
A
V
Input Impedance 50 100 KΩ
IN
P
Output Power THD = 10% 1.8 2 W
O
= 4Ω, VS = 8.5V, THD = 10% 2 W
R
L
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TDA7299
ELECTRICAL CHARACTERISTICS
(T
= 25°C; VS = 12V; RL = 8Ω; f = 1KHz; unless otherwise specified.)
amb
(continued)
Symbol Parameter Test Condition Min. Typ. Max. Unit
P
ot
Transient Output Power
THD Distortion P
SVR Supply Voltage Rejection V
Input Noise Voltage Rg = 10KΩ; BW = 20Hz to 20KHz 1.5 5 µV
E
I
V
*) Limited by the RTH of the package
Stand-By Enable Voltage 1 V
sb
*)
Vi = 400mVp, THD < 2%, RL = 4Ω 2W
= 1W 1 %
O
= 150mVrms;
ripple
F
= 1KHz
ripple
50 dB
Figure 1. Application Circuit
V
=12V
S
STAND-BY
V
S
0.1µF
IN
IN
SVR
47µF
GND
100µF
470µF
OUT
8Ω
V
S
470µF
OUT
8Ω
D94AU161A
STAND-BY
0.1µF
IN
IN
SVR
47µF
GND
APPLICATION HINTS:
For 12V supply and 8Ω speaker application, its maximum power dissipation is about 1.8W.
Assumming that max ambient temperatur e i s 70° C. re quired thermal resistance of the device and heat dissipat-
ing means must be equal to (150 - 70)/1.8 = 45°C/W.
Junction to pin thermal resistance of the package is about 20°C/W. That means external heat sink of about
25°C/W is required.
Cu ground plane of PCB can be used as heat dissipating means.
Stand-By switches must be able to discharge C
current.
svr
3/7
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