Part Number: VCA824 Hi
I would like to ask you a question about Fig19 and Fig20, 10 page on the datasheet as below.
Q1) Fig19
Rs means "Load" registance, not input registance, right?
Q2) Fig20
X and Y axis seems to be not correct...probably…
Part Number: VCA824 Hello,
I am working on a redesign, I want a variable gain amplifier that has the same phase with different gain. In the old system it was done using an opamp and a digital potentiometer, noninverting amplifier. But because I'm changing…
Part Number: VCA824 Other Parts Discussed in Thread: LMH6503 , , VCA821 , VCA822 , VCA820 Would it be correct to say that the VCA824 is a direct replacement (assuming SOIC 14 pkg) for the LMH6503 VGA? Seems like the VAC824 is just an improved design but just…
Part Number: VCA824
Hi everyone,
I followed the figure in datasheet of VCA824 to test the chip.
In my circuit R1 = R2 = 20 Ω, Rg = Rf = 1 kΩ.(I also wondered why R1 and R2 are not 50 Ω)
I set the Vg = -1V, 0V or ±0.9V and input a sine…
Part Number: VCA824 I would like to use VCA824 as a power meter, by the use of the four quadrant multiplier as described in page 28 of the datasheet.
My goal is to measure output power from an inverter, so input signals are inverter output volatge and…
Part Number: VCA824 The Four-Quadrant Multiplier Circuit is a proposed circuit in the datasheet of the VCA824, this circuit is simple, and the specifications to the implementation are very clear there, threfore, once the circuit was implemented it onl…
Other Parts Discussed in Thread: VCA824 , VCA822 I want use VCA824 to design a VGA cuicuit, which is liner in V/V,
transfor function is as follow:
Vo=AVg*Vi
Vi from 0V to 5V,
Vo from 0V to 5V,
AVg chandges from 0V to 5V,
Can VCA824 do the work?
Can the…
Part Number: LMH6505 Other Parts Discussed in Thread: VCA822 , VCA820 , VCA821 , VCA824 , LMH6714 , LMH6609 Hello, My customer would like to use LMH6505 as an AGC described in the figure 49 in the datasheet. However, they would like to use LMH6505 with V…
Other Parts Discussed in Thread: VCA824 Hi,
I'm trying to import VCA824 PSpice model to my ADS2011. At the importing step, there was no error. But when i tried to run transient simulation of the circuit shown in Fig.84 in VCA824's datasheet, i couldn't…
