Other Parts Discussed in Thread: TINA-TI,
Tool/software: TINA-TI or Spice Models
Hi, TI employee
I need some guidance from you.
I’m making a design for amplifying a 20 MHz 200 mVpp signal to 10 Vpp using THS3092 and want to drive a signal generator connected by a 50 ohm coaxial cable. I want to use this single chip to do two stage amplifier with gain of 50 V/V. But in order to meet impedance matching, the gain of even 100 V/V will reduce to 25 V/V. When followed by the datasheet, the max amplification factor is 10 V/V, for larger gain there is no recommend Rf value. So here is my question:
1.Can I use this single THS3092 to meet my design?
2.If I want more gain than 10 V/V, like 15 V/V, is there any recommend value for Rf and Rg?(p.s. I have try some value but the output waveform is distorted and the peak can't reach even 6 Vpp. The power supply is ±12 V）
Thank you for your help, I'm waiting for your reply.