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Questions tagged [icl7660]

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1
vote
2answers
422 views

Charge Pump 9v to 15v?

I need to power a device (it's an analog bucket brigade delay) from a 9v power supply or battery. The device takes 15v. Is there anyway? I have a few 7660s IC chips, if that helps. I've made charge ...
3
votes
1answer
4k views

Negative voltage PWM?

I'm relatively new to EE, sorry if this is newbie territory. With an Arduino, I am trying to emulate a device that outputs NEGATIVE 3.3v PWM (0V or -3.3V, square wave) at around 500 hz. Obviously,...
0
votes
2answers
400 views

Package impact on ICL7660

I am using the ICL7660 charge pump IC to generate a -5V supply from a +5V. When using the IC on breadboard with a DIP package (ICL7660CPAZ), with two 10µF electrolytic capacitors, it works perfectly ...
0
votes
2answers
1k views

Dual power supply for Op Amp

We have dual power supply units (+- 12V DC with common GND) at our college lab using which I am able to implement my project (digital thermometer) which uses op amps as shown in the figure. I'm using ...
2
votes
2answers
926 views

Can I use MAX232 instead of a ICL7660 to make a split power supply?

For an opAmp rails I need positive and negative voltages i.e. Vcc, Vee. I look for a good IC which is commonly used for creating split power from a single power supply. Many recommends ICL7660. I ...