RF Amplifier with Op-Amp

By -
Op-Amp's right, not wrong title. I know the op amp is approximately 20 years ago, at age 741/301 series, an easy calculation (gain calculation), affordability, and simplicity of construction makes a very interesting op-amp. So many of the implementation of the op-amp, and even had time to try to build the "op-amp based computer". Almost all can be built with op-amp, except for RF.

But that first, reversing the progress of semiconductor technology this condition, a few years back the manufacturers have managed to build an op-amp with a working frequency up to GHz. An article from Texas Instrument by Bruce Carter describes the application of op-amp (THS3202) on the rf circuit.

RF Amplifier with Op-Amp
20dB RF gain op-amp

Above circuit provides flat gain of 20dB in the range up to 200MHz.Terminasi input and output impedance is determined by the resistor 49.9Ohm. Strengthening the voltage is determined by resistor 301 Ohm / 5.16 Ohm. Choice of reinforcement could be done as to determine the op-amp gain.


RF Amplifier with Op-Amp Circuit
40dB gain IF amp using op-amp

The circuit above provides 40dB gain (2 x 20dB). Consider the provision of value as a determinant of the gain resistor (feedback). Note also the termination impedance at the point-B0 SFELA10M7GA00 ceramic filter a 332 Ohm resistor is applied there.

A front-20dB amplifer THS3202, SA602/TA7358 mixer, IF amplifier THS3202 40dB, 8MHz crystal ladder filter .. seemed to be an interesting combination ...

Comments

Post a Comment

Popular posts from this blog

1500W Stereo Power Amplifier Schematic

By -
Image
Circuit Power Amplifier has a power output of up to 1500W RMS power amplifier circuit is often used to power sound systems keperlun for outdor. In the final image can be seen a series of power amplifiers using 10 sets of power transistors for the ending. This power amplifier circuit using a transistor amplifier from the front, signal splitter, driver and power amplifier. Current consumption required is quite large power amplifier that is 15-20 A 1500W power amplifier circuits for this. Supply voltage needed by the power of this amplifier is the optimal working order symmetrical 130VDC (130VDC-130VDC ground). 1500W amplifier circuit below is a picture series of mono, stereo if you want to make it necessary to make two copies of the circuit. For more details can be viewed directly image the following 1500W power amplifier circuit. The series of High Power Amplifier 1500W With Transistor Click Image to view larger In the above series of power amplifer 1500W is equipped ...
Read more

TDA2030 complete tone control

By -
Image
At this time I present a series of amplifiers that use IC TDA2030, but this series is equipped with a tone control. Tone controls include Bass, Treebel, and Volume. Power amplifier and tone control has been put together in a single PCB. As well as its power supply circuit was also used as one with the power amp, and tone control. Making it easier in the installation and will look neat. Schematics Layout PCB PCB design This amplifier is a mono amplifier type, can be modif for guitar amplifiers. If not coupled amplifier (mic preamp) then you must deactivated potensio treble and bass, why? because if not using a mic preamp and still maintain potensio treble and bass sound input (input) from the guitar will not or the maximum discharge is not tight on the speakers. So you must deactivated a way to decide which directly connected capacitor with the tone control circuit, and capacitor were connected directly to potensio volume and input jack.
Read more