Part Number: VCA821 Hello team,
The D/S Table 2 specifies that RG = 18Ohm when G=40 (use case is AVMAX=32dB).
Figure 1 specifies that differential input voltage level should be close to 0.1Vpp when RG=18Ohm.
Is the input voltage level limited to 0.1Vpp…
Hi Jacob,
Thank you for your response here. I have tried VCA821/VCA820, these two device can not realize the function I mentioned here. Does TI do not have such VCA to realize below requirement?
Vs=+/-5V, Vppmax=2V, frequency=30MHz, AVmax=40dB;
When…
Part Number: VCA821
Hello,
I think there is something wrong in the picture of datasheet, Is there someone who have succeed simulating the circuit of this picture? I simulated this circuit with Multisim，but can't achieve the function of AGC.
Part Number: VCA821
My test of the board shows that the waveform would not have distortioin if it output within about 70mVpp
but it would have distortion if it output too high
I have asked someone, be told that my input have offset，but the output…
Other Parts Discussed in Thread: VCA821 , OPA847 I cascaded the OPA847 and VCA821
my input signal was around 20mV (sine wave)
the OPA847 was set at a gain of 20.
the VCA821 was set at a gain of 2.
However, the output at the VCA821 looked like a square wave…
On its datasheet page 9, figure 3, I wonder how I could get the value of 20dB from Vpp = 1V on the curve Rf=1kohm ? ( basically, how could I use the equation there to get the plot ? ) I tried myself with all equations in the datasheet but still could…
Hello Zhe,
It looks to me like figure 34 should have been a linear scale instead of logarithmic. The curves line up well at the left and right side of the graph, but you are correct, they don't look accurate in the middle. If you check the EC table…
Other Parts Discussed in Thread: VCA821 , VCA820 , VCA822 , VCA824 Hallo,
I have a question. What are VCTRL0 and VSLOPE in the VCA820 / VCA821 datasheet and Figure7 of the VCA821 datasheet? The VCA822 / VCA824 have not these specs. Are these specs for the gain…
Part Number: INA149 Other Parts Discussed in Thread: VCA821 , VCA824 Hi team,
My customer wants to find a alternative device or alternative solutions to take over AD8130ARMZ-REEL7 (Low cost Differential Receiver Amplifiers)
Could you help me to find a P2P…
