Obsolete Product(s) - Obsolete Product(s)

Size: px

Start display at page:

Download "Obsolete Product(s) - Obsolete Product(s)"

Isabel O’Neal’
6 years ago
Views:

1 TDA7267A 3W MONO AMPLIFIER CAN DELIVER 3W THD 0% 4.V/8Ω TERNAL FIXED GA 32dB NO FEEDBACK CAPACITOR NO BOUCHEROT CELL THERMAL PROTECTION AC SHORT CIRCUIT PROTECTION SVR CAPACITOR FOR BETTER RIPPLE REJECTION LOW TURN-ON/OFF POP STAND-BY MODE BLOCK DIAGRAM C 0.µF SVR 4 3 V S + - DESCRIPTION The device TDA7267A is a new technology Mono Audio Amplifier in PowerDIP package specifically designed for TV application. Thanks to the fully complementary output configuration the device delivers a rail to rail voltage swing without need of boostrap capacitors. 2 OUT PowerDIP 8+8 ORDERG NUMBER: TDA7267A C4 00µF C 470µF V S =4.V 8Ω C3 47µF 6 9 to 6 S-GND D98AU827 June 998 /7

2 ABSOLUTE MAXIMUM RATGS Symbol Parameter Value Unit V S Operating Supply Voltage 8 V I O Output Put Peak Current. A T op Operating Temperature Range 0 to 70 C T j Junction Temperature 0 C T stg Storage Temperature Range -40 to 2 C P CONNECTION (Top view) V S OUT SVR N.C. S-GND N.C. Rth with "on Board" Square Heat Sink vs. Copper Area THERMAL RESISTANCE JUNCTION TO AMBIENT( C/W) ON BOARD HEAT-SK AREA (sq.cm) N.C. 8 9 D98AU830 D98AU829 Example of heatsink using PC board copper 2/7

3 THERMAL DATA Symbol Parameter Value Unit R th j-amb Thermal Resistance Junction to ambient 70 C/W R th j-case Thermal Resistance Junction to case C/W ELECTRICAL CHARACTERISTICS (Tamb = 2 C; VS = 4.V; RL = 8Ω; f = KHz; unless otherwise specified.) Symbol Parameter Test Condition Min. Typ. Max. Unit V S Supply Voltage Range 8 V I S Quiescent Current 23 3 ma I sb Stand-By Current Pin 3 shorted to GND 0.3 ma V O Quiescent Output Voltage 7. V A V Voltage Gain 3 33 db R Input Impedance 0 00 KΩ P O Output Power THD = 0% W THD Distortion P O = W % SVR Supply Voltage Rejection V ripple = 0mVrms; 0 db F ripple = KHz E I Input Noise Voltage Rg = 0KΩ; BW = 20Hz to 20KHz 0 µv V sb Stand-By Enable Voltage V Figure. Application Circuit STAND-BY C 0.µF SVR C3 47µF V S S-GND 2 9 to 6 C4 00µF OUT C 470µF 8Ω D98AU828 V S =4.V APPLICATION HTS: For 4.V supply and 8Ω speaker application, its maximum power dissipation is about.8w. Assumming that max ambient temperature is 70 C, the required thermal resistance of the device mounted on the PCB with a dissipating area must be equal to: (0-70)/.8 = 44.4 C/W. Junction to pin thermal resistance of the package is about C/W. That means external heat sink of about 30 C/W is required. Cu ground plane of PCB can be used as heat dissipating means. 3/7

4 Figure 2. PCB And Components Layout Of The Application Circuit of Figure Components C2 and C6 must be ignored. Figure 3. Distortion vs Output Power THD+N(%) 0 f = KHz Figure 4. Distortion vs Output Power THD+N(%) 0 f = 0KHz Remark: all the characterization curves refer to the electrical test conditions. 4/7

5 Figure. Distortion vs Output Power Figure 6. Output Power vs Supply Voltage 0 THD+N(%) Pout (W) 0 f = KHz THD=0% f = KHz THD= % 0. f = KHz Vs(V) Figure 7. Distortion vs Frequency Figure 8. Quiescent current vs Supply Voltage 0 0. THD(%) Pout = W Vs = 4.V Rl = 8 Ohm k 0k 20k f(hz) Figure 9. Power dissipation vs Output Power Iq(mA) Vs(V) Pd(W) Vs = 4.V Rl = 8 Ohm F = KHz /7

6 POWERDIP 8+8 PACKAGE MECHANICAL DATA DIM. mm inch M. TYP. MAX. M. TYP. MAX. a B b b D E e e F I L Z /7

7 Information furnished is believed to be accurate and reliable. However, STMicroelectronics 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 STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics 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 STMicroelectronics 998 STMicroelectronics Printed in Italy All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 7/7

TDA x 2W STEREO AUDIO AMPLIFIER

TDA x 2W STEREO AUDIO AMPLIFIER 2 x 2W STEREO AUDIO AMPLIFIER WIDE OPERATING RANGE FROM 4.5V TO 18V POUT = 2W @ THD 10% 12V/8Ω INTERNAL FIXED GAIN 32dB NO FEEDBACK CAPACITOR NO BOUCHEROT CELL THERMAL PROTECTION AC SHORT CIRCUIT PROTECTION