Sine / Sawtooth Wave Generator with OPAMP

CHOI SEUNG WON

Expert 1195 points

Other Parts Discussed in Thread: TLV9051, TL082, TLV9152

Dear TI

I design Analog Circuit , next conditions

1. Sine wave generator 60Hz(hardware controllable50~60Hz) , Single Supply 5V opamp

2. Sawtooth wave generator 100kHz(hardware controllable 30k~120kHz) , Single Supply 5V opamp

I would like to recommend an opamp that is worth referring to in TI Opamp products.

Best regards,

Choi

over 4 years ago

0 Jerry Madalvanos over 4 years ago

TI__Mastermind 26981 points

Choi,

I'm trying to understand the application, you're essentially just creating a comparator between the 60Hz sine wave and the 100k sawtooth, correct? if so I would recommend a comparator.

https://www.ti.com/amplifier-circuit/comparators/products.html

Best,
Jerry

0 CHOI SEUNG WON over 4 years ago in reply to Jerry Madalvanos

Expert 1195 points

Dear Jerry

Thanks your reply.

then i need pure sine / sawtooth wave generator with single power opamp circuit.

Best,

Choi

0 Jerry Madalvanos over 4 years ago in reply to CHOI SEUNG WON

TI__Mastermind 26981 points

Choi,

Are you looking for an op amp to generate your sine wave and sawtooth wave or are you looking for an op amp to place as shown in the circuit (circled in red)Best,
Jerry

0 CHOI SEUNG WON over 4 years ago in reply to Jerry Madalvanos

Expert 1195 points

Dear TI

I verify 'sine/sawtooth wave generator opamp circuit simulation'.

I use 'bipolar power supply opamp circuit simulation' then i need 'real unipolar power supply opamp circuit example or real opamp parts'.

Best,

Choi

0 Jerry Madalvanos over 4 years ago in reply to CHOI SEUNG WON

TI__Mastermind 26981 points

Okay, I think I understand. You're looking for a part to replace TL082 that can support a single ended 5V supply. A suitable replacement part that keeps the same GBW, slew rate, and is usable with a min supply of 5V is TLV9051. This keeps you in the same price range as TL082, without sacrificing spec.

Is this what you were looking for?

Best,
Jerry

0 CHOI SEUNG WON over 4 years ago in reply to Jerry Madalvanos

Expert 1195 points

Dear TI

I will verify TL082 device.

If possible, a device that provides examples of sine and triangular waves generation circuit , but are there any other products to recommend?

I want to a opamp with single power supply(5~12V).

Best,

choi.

0 Jerry Madalvanos over 4 years ago in reply to CHOI SEUNG WON

TI__Mastermind 26981 points

Choi,

The reason I mentioned TL082 is because that is what was in the pictures you posted.

I recommend using TLV9152, or going through the search tool to find the op amp with the specifications you need. I have included a link below for convenience.

https://www.ti.com/amplifier-circuit/op-amps/general-purpose/products.

Best,
Jerry

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Sine / Sawtooth Wave Generator with OPAMP