Showing posts with label noise. Show all posts
Showing posts with label noise. Show all posts
Wednesday, December 25, 2013
TDA7496 Low Noise Power Amplifier
Audio amplifier circuit given away now is a 5W stereo grade AB power amplifier based on the TDA7496 IC designed in favor of high-level quality sound.
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| TDA7496 Low Noise Power Amplifier |
The power supply required obligation cede 22 volts for 8 ohms load impedance and 12 volts for 4 ohms load impedance . The highest output power which can be located obtained with this audio IC is around 5.5 watts on 8 ohms load with 10 % THD and 4 watts with 1 % THD.
focal skin of the TDA7496 include linear volume control ,standpoint-by and Mute functions , 2 x 5Watt output power, undersized circuit protection , thermal overload protection.
- greatest extent ratings of TDA7496 IC
- Supply Voltage: 35 against
- Maximum Input Voltage: 8 Vpp
- full Power Dissipation (Tamb = 80°C): 15 W
- Operating fever: 0 to 70 °C
- cargo space and Junction fever: -40 to 150 °C
- Volume CTRL DC voltage: 7 vs.
Wednesday, December 11, 2013
Low Noise Microphone preamplifier
This circuit use to raise the gain to reduce noise or amplify the signal. And this circuit use IC OP27 / OP37 , this is precision opertional amplifier ,lower noise , and higher speed with the same input ofset with drift specifications as the OP07 . Both parts have a 10 uV offset , 0.2 uV drift , and 1.8 million gain. Coupled with low voltage noise of 3.5 nV at 10 Hz and a low 1 /f noise corner frequency of 2.7 Hz, the OP27 / OP37 are optimized for accurate amplification of low - level signal.
See schematic and pin configuration below :
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| Click to view Larger |
Output swing about 10 V into 600 Ohm. Input voltage maximum 25 V. This circuit also can use to , Low noise DC amplifiers , Microphone Amplifiers , Precision Amplifier , Tape - Head Preamplifiers , Termocouple Amplfiers , Low - level Signal Processing , Medical instrumentation m Strain - gauge Amplifiers , High accuracy Data Acquistion.
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