TLV376: reference design : 200 V/V and 400 V/V gain

Wesley Huang

Expert 1030 points

Part Number: TLV376

HI team,

1. Could you please help me double check my design which can switch gains of 200V/V and 400V/V via TLV376？

2. Could you please provide a reference design with a switch which can switch gains of 200V/V and 400V/V via TLV376？

Best regards

Zhihong Huang

over 3 years ago

0 kai klaas69 over 3 years ago

Guru 140200 points

Hi Wesley,

what is your signal frequency range?

Kai

0 Raymond Zhang1 over 3 years ago in reply to kai klaas69

TI__Mastermind 47966 points

Hi Wesley,

The BW of your circuit is approx. 16kHz to 33kHz from Gain=400 to 200 respectively. Please see the attached simulation.

/cfs-file/__key/communityserver-discussions-components-files/14/TLV376-05062020.TSC

Best,

Raymond

0 Michael Steffes over 3 years ago

Guru 47515 points

You also would need to insert the switch capacitances into this sim and, for single supply, Vin =0V will be out of range on the low side (check output swing)

0 Wesley Huang over 3 years ago in reply to Raymond Zhang1

Expert 1030 points

HI Raymond,

Thanks for your reply,

1. Could you please recommend a switch capacitance for my design?

2. Could you please share the document about how to select the switch capacitance in such design?

Best regards

Zhihong Huang

0 Wesley Huang over 3 years ago in reply to Michael Steffes

Expert 1030 points

HI Michael,

Thanks for your reply,

1. Could you please recommend a switch capacitance for my design?

2. Could you please share the document about how to select the switch capacitance in such design?

Best regards

Zhihong Huang

0 kai klaas69 over 3 years ago in reply to Wesley Huang

Guru 140200 points

Hi Wesley,

would you be so kind and answer my question? :-)

"What is your signal frequency range?"

Kai

0 Wesley Huang over 3 years ago in reply to kai klaas69

Expert 1030 points

HI Kai,

I am so sorry that i miss your reply.

It is below 10khz.

Best regards

Zhihong Huang

Amplifiers

Amplifiers forum

TLV376: reference design : 200 V/V and 400 V/V gain