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I need equivalent IC for ad620an

Instrumentation amplifier 8 pin dip

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Posted on Jan 02, 2017

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SOURCE: Need equivalent IC

i made programmer for 89c51. in this use ic ds275. i want know what is the equivalent ic of ds275.

Posted on Dec 06, 2008

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IC BT9843 equivalent need for Sub Woofer


i had same problem. You can use TFA9843J instead BT9843(not possible to find). But when you will fix it change 8 pin to 9 - 9 to 8.

http://www.fixya.com/support/t13998979-ic_bt9843_burnt_need_equivalent_replace check this answer (detailed with datasheets)

Sep 20, 2014 | Creative Labs Audio Players & Recorders

2 Answers

What is a opamp


An opamp is an operational amplifer. The OPA134 is a single amplifier with differential inputs. The best way to describe this IC is that it is an ideal amplifier with infinite gain, with high input impedance and low output impedance making it both a voltage and current amplifier. The output signal is divided with resistors and provides feedback to the minus input to inject negative feedback. The ratio of this feedback basically determines the final gain. The input signal may go to the positive input for a non-inverting amplifier or to the negative input for an inverting amplifier. Roughly the voltage gain in dB will be 20 x log of Vout/Vin. There is a difference in the gain of 1 between inverting and non-inverting for accuracy sake, but that is the basics.
This particular part is very high quality in performance and should be replaced with the equivalent part or one from Burr-Brown. The power supply is typically +/- rails and ground is usually the virtual point between the split supplies representing 0V. Sometimes the input signal will not be referenced to ground and will be fed to both the plus and minus inputs which will be balanced (impedance wise) to form a differential input that rejects common signals such as noise. Pretty cool device, I couldn't live without them. OPA134 Precision Amplifier Operational Amplifier Op Amp Technical documents

Jan 10, 2014 | Texas Instruments OPA134PA IC, AUDIO,...

1 Answer

Acer Aspire 5315-2153 intel celeron board with burn't power Ics.


Are you serious, you want fixya' to supply ic chips to you, not possible, contact Acer support and they may be able to supply the part numbers for you to be able to purchase them.

Dec 30, 2013 | Computers & Internet

1 Answer

Acer aspire 5315-2153 has a power problem caused by wrong adapter, the 3 ics on intel celeron board have got burn't. Can you send me the equivalence of the 8 legs Dip ic that i can buy in the market to...


The numbers on the IC's are what you need to use to order replacements. Generally, there are no equivalents available without knowing the numbers on the faulty IC's.

Dec 30, 2013 | Computers & Internet

1 Answer

Clip light on


Hi,

Does all the "Clip" lights are on? or just certain channel? if all "Clip" lights are on you have to check the +15V and -15V at Operational amplifier ic that is a 8-pin integrated circuit, pin 4 should have the -15V and Pin 8 should have the +15V, if just one channel shows the light constant on then its an opamp in that particular channel, let me know further to improve help.

Oct 24, 2013 | Peavey PV8 Mixer

1 Answer

Channel 1 makes a pulseating click and NO sound through it . All other channels are fine!!!!!!!!


Hello,

Operational amplifier circuit named 4580 is the issue as with most of mixing boards, each channel has its own operational ic's and one way to know which one is defective is simply touch every one on the board, inside of course, of the non-working channel, check for excessive heat and if you find one pretty hot compared to other you just find your bad component, you will recognize what type of ic im talking about, is a 8-pin smd ic where the pin 4 should have -15v and pin8 should have +15V, no other pin should have any voltage and this is another way to test an opamp, with a dmm in dc volts referenced to ground, chassis ground, let me know if you need further assistance.

Sep 18, 2013 | Behringer XENYX 2442FX Mixer

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My IC BT9843 is burnt I need an equivalent to replace it.any help please?


i had same problem. You can use TFA9843J instead BT9843(not possible to find). But when you will fix it change 8 pin to 9 - 9 to 8.

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2-mla2jyfwgp2yg1xb5100eal4-5-3.jpg

Aug 14, 2012 | Creative Labs Audio Players & Recorders

1 Answer

Need schematic for Crate PCM-8 DP+


Without a schematic you can still trace the circuit to locate the fault.

Put a music source or sound source into the bad channel and a good channel, and with an oscilloscope or with a pair of high impedance headphones with test leads on the ends- you can set up a low z headphone with an impedance match trasformer, make sure you have test prod ends on one of the leads. The other can go to a chassis ground. Start at the input and work your way forward comparing the signal between the good channel and the faulty channel. When you lose the signal or you encounter severe distortion, you are in the vicinity of the defective part.

Common failures are a Deffective 4558 or TL072/TL071/TL074 IC chip. You may have a faulty electrolytic capacitor, or even a faulty bypass caoacitor in general. Bad solder connections, even a broken fim resistor.

With the IC chips, the usual power pins for an 8 pin plastic or ceamic DIP are pins 4 and 8. usual outputs for the 8 pin are 1 and 7 the remaining pins are the inverting and noninverting inputs. 2 and 3 and 5 and 6.

Also check switches and especially those with interupts on the input and output jacks- they can get dirty.

Apr 10, 2012 | Music

1 Answer

I need sheme for YPLM-M003B of LG L1717S-SN.IC in primar of power supply is burned.


I have this power board,LAF0001 pwm is the only use IC.

20 pin Inverter IC labeled (0zl68GN VKo257 5T 0647B1)
and 2 8 pin dip IC

Sep 10, 2011 | Televison & Video

1 Answer

Input clean is very low almost not there. switching to OD works fine.


If memory serves me correctly, these units use a 4558 OpAmp Ic. Both inputs pass thru this IC. One side provides a clean amp stage and the other is set up to run in a higher gain mode. This IC needs to be changed, It should be a small IC with 8 pins.

Dan

Mar 06, 2009 | Marshall Mg15dfx 15-Watt Combo Guitar...

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