Number of Opamp in signle chip

[harii74]

Number of Opamp in single chip

Hello friends
I need to know any IC consists of minimum 8 no of opamps in single chip.This is to design 3 bit to 4 bit Flash ADC for laboratory purpose.
Right now we use LM324 and TLO84 2 to 4 nos.

Thanks.

 

[keith1200rs]

For a flash ADC I would have thought you would have wanted comparators, not opamps.

4 tends to be the maximum in one chip.

Keith

 

[ckshivaram]

Even to my knowledge maximum of 4 opamps are there in an IC..
How do you use opamp for ADC..
Are you trying to use OPAMP IC as comparator as opamps can be configured as comparators.......

 

[harii74]

Yes sorry
I use Opamp as a comparator. I can use either as active low or active high and i no need to use pull up or pull down resistor if i use opamp.
Thats what i need opamp. I need 8 opamp in single chip.

 

[KJ6EAD]

Re: Number of op amps in a single chip

NJR makes a couple of hex models: **broken link removed**. Texas Instruments used to make octal versions of several of their most popular amps including an LM324X2 and TL084X2.

 

[keith1200rs]

Yes sorry
I use Opamp as a comparator. I can use either as active low or active high and i no need to use pull up or pull down resistor if i use opamp.
Thats what i need opamp. I need 8 opamp in single chip.

Comparators can be active high or low. They all don't need pull-up resistors - a lot have push-pull outputs. Comparators are designed for comparison and are specified for use as a comparator.

Keith.