AN6884 DATASHEET PDF

Zulut Capacitor with polarity can be used ac couple or blocking. Have you tried a non-polarized capacitor e. Vref is the high side of the 5 LED comparators in the datasheet block diagram. Very confusing terminology, since the inverting input can have a higher voltage than the noninverting input.

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Mikora The potentiometer is clear, but the 2. It just shortens the range of turn over which the potentiometer works.

Have you tried a non-polarized capacitor e. Vref is the high side of the 5 LED comparators in the datasheet block diagram. The diode will mess up the response of the chip due to its forward voltage drop. Passing Vin through a reverse capacitor seems to be potentially more prone to failure.

It appears to be reversed. Capacitor with polarity can be used ac couple or blocking. How does doing anything to pin 7 or pin 8 affect that? Very confusing terminology, since the inverting input can have a higher voltage than the noninverting input.

Sign up using Email and Password. This circuit will light the LEDs as the input voltage on pin 8 increases relative to pin 7. Indeed, it must in order for any a the LEDs to turn on! You might want to edit to explain your answer a bit more. If I remove the 2. Pin 8 accepts a positive input voltage. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

As displayed, the LEDs go from fully off to fully on over roughly the entire turn range of the potentiometer. Fadecomic 2 6. Post as a guest Name.

Setting 7 higher than ground dqtasheet the low side of the comparators, allowing them to turn on with a lower output from the amp. Reverse biased capacitor on IC input pin Ask Question. This makes adtasheet, but why not a diode? That is to say that the LEDs all come on at a much smaller turn of the potentiometer. Can someone explain what the reversed capacitor is doing here? Pin 7 is the output of the internal amplifier, and pin 8 is its input, designed to accept a low-level AC input 57 mV for a 0-dB indication.

The LED pins connect to the negative side of the LEDs, and the pins go low when the output of the internal amp goes above Vref dropped by voltage dividing resistors at each comparator.

Sign up using Facebook. Sign up or log in Sign up using Google. That means there is a small current flow out from the pin. Home Questions Tags Users Unanswered.

There is also no discharge path with your arrangement. Most 10 Related.

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AN6884 DATASHEET PDF

Mikora The potentiometer is clear, but the 2. It just shortens the range of turn over which the potentiometer works. Have you tried a non-polarized capacitor e. Vref is the high side of the 5 LED comparators in the datasheet block diagram. The diode will mess up the response of the chip due to its forward voltage drop. Passing Vin through a reverse capacitor seems to be potentially more prone to failure.

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DATASHEET AN6884 PDF

It just shortens the range of turn over which the potentiometer works. That is to say that the LEDs all come on at a much smaller turn of the potentiometer. Pin 8 accepts a positive input voltage. As displayed, the LEDs go from fully off to fully on over roughly the entire turn dtaasheet of the potentiometer. Indeed, it must in order for any of the LEDs to turn on! Sign up datasueet log in Sign up using Google. Very confusing terminology, since the inverting input can have a higher voltage than the noninverting input.

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