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Old 10th July 2010, 06:59 PM   #1
asbn369 is offline asbn369  Dubai
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Question tda 7375 ic

hi,
i finished making amp based on tda 7375 ic.can anyone help regarding pin no 7 in ic which is ST-by and about its connections etc?????
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Old 10th July 2010, 09:23 PM   #2
Ar4 is offline Ar4  Latvia
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Quote:
STAND-BY DRIVING (pin 7)
Some precautions have to be taken in the defini-
tion of stand-by driving networks: pin 7 cannot be
directly driven by a voltage source whose current
capability is higher than 5mA. In practical cases
a series resistance has always to be inserted,
having it the double purpose of limiting the cur-
rent at pin 7 and to smooth down the stand-by
ON/OFF transitions - in combination with a ca-
pacitor - for output pop prevention.
In any case, a capacitor of at least 100nF from
pin 7 to S-GND, with no resistance in between, is
necessary to ensure correct turn-on.
Check datasheet. So As you can see, the capacitor goes to ground and to st-by. it means that you have to add st-by pin to positive voltage rail.
Using 10K resistor of course

Last edited by Ar4; 10th July 2010 at 09:27 PM.
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Old 11th July 2010, 06:47 AM   #3
asbn369 is offline asbn369  Dubai
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thanks 4 ur reply!!!!!!!!!!!
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Old 27th August 2010, 07:21 PM   #4
asbn369 is offline asbn369  Dubai
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i dont want to add a std by pin.so then??ples help
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Old 27th August 2010, 07:48 PM   #5
Ar4 is offline Ar4  Latvia
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As I told you, for "minimal-amp" use 10k resistor from stand by pin to positive voltage rail (+). To be sure that there are no any pops, use 10uF capacitor as in schematics. You cant bypass that pin
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Old 4th September 2012, 05:59 AM   #6
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hello friend..i try to built the circuit without using standby pin...its not working...whelther it is necessary to connect the pin pin 7 to supply voltage using 10k resistor?
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Old 4th September 2012, 11:53 AM   #7
AndrewT is offline AndrewT  Scotland
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read the datasheet.
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regards Andrew T.
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