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You can build an analog multiplier using two log amplifiers, an exp amplifier (also called anti-log amplifier) and an adder. For details you can
can anyone of u send me the design procedure of analog multiplier? My bet is you want voltage multiplier not frequency multiplier? Procedure for frequency multiplier is a little bit more complex. Anyhow: AD633 from analog.com. Circuit schematics are included in datasheet of this chip. (...)
Does anyone know about how to design "current mode" analog multiplier. I mean I0=I1*I2
More about analog multiplier and how it can be used you can find in datasheet for MC1495. Four quadrant means that both variables X and Y can have positive or negative sign. Two quadrant means that one of the variables can have only one sign and other both signs. Use the analogy with cartesian plane.
A mixer produces at the output sums or differences of the input frequencies. To do that it needs at least one non-linearity, such as multiplication or squaring, in its transfer function (and proper filtering at the output of course). Every analog multiplier can effectively be used as a mixer. The inverse doesnt hold. For example a circuit with o
hi i am working on analog multiplier. i want to know the book name where i get some material about in.plz help me
hi i m designing 4 quadrent analog multiplier. there r four ip terminal in my strecture. i m giving V1+v1, V1-v1, V2+v2, V2-v2, signal at the input terninals, where V is D.C. bias and v is analog signal. i m gettin correct out put.but i dont know how can i do a.c. analisis of the circuit. i mean apply same ac signal at all the terminal (...)
hi i m designin four quadrent analog multiplier. the topology which i choose is given in fig. i designed symatic and the designed circuit give correct output for input dynamic range -1 V to 1V. i designe the circuit in voltage mode. but one of my frnd say it is current mode circuit. and he say that this will not give correct out put when it is
hi i m designin four quadrent analog multiplier. the topology which i choose is given in fig. i designed symatic and the designed circuit give correct output for input dynamic range -1 V to 1V. i designe the circuit in voltage mode. but one of my frnd say it is current mode circuit. and he say that this will not give correct out put when it is f
can anyone has analog multiplier circuit then do send me also if u have C coding to build the analog multiplier then multiplies the signal and NRZ level and phase shifter bcoz my proj is BPSK modulator SO SEND ME THE CODING AND CKT THANX REPLY
can anyone has analog multiplier circuit then do send me also if u have C coding to build the analog multiplier then multiplies the signal and NRZ level and phase shifter bcoz my proj is BPSK modulator SO SEND ME THE CODING AND CKT THANX REPLY
Hi, I am looking for an analog multiplier chip which operate under 5V. Both of two inputs are analog sine signals with amplitude less that 1V. I searched several chips, but all of these operated from +/-4V ~+/-15V, including AD632/3, AD834, RC4200, MC1494, MLT04, mpy5/634, and MT09. Any suggestion? Thanks.
Hi, i am an electronic enginnering student and i am designing a four-quadrant analog multiplier for the graduation project. i want to know how i measure frequency response for two inputs in virtuoso. yes, for one inputs it's simple but in more than one input, i do not know how i can measure the frequency response of multiplier for each (...)
It's possible with industry standard analog multipliers like AD633. As you are designing a feedback system with variable gain, achieving stability for all operation conditions isn't quite easy, but basically possible at the cost of bandwidth.
what is the working of CMOS analog multiplier? How is it work?
I m making a "CMOS analog multiplier". currently am trying to simulate the proposed circuit in multisim from the below given pdf file...... analog multiplier PDF DOWNLOAD
If you are worried about noise, the analog multiplier is the best one because it works on low level signals where noise is important. If you severely low pass filter the output (equivalent to integrating for a long time) the measurement will be less contaminated by noise.
Hi: Try searching for Gilbert cell multiplier, online. You can find lots of material on it since it is the most commonly used analog multiplier. Rgds
I assume that you are posting in the analog forum you want an analog multiplier. Do you want to multiply two analog signals or produce a higher harmonic of a sine wave. For the first there is the original Gilbert multiplier from his 1968 paper. He took the four quadrant switching mixer which dates back to (...)
can someone give the circuit of an phase comparator both analog and digital i was able to get the circuits of the various blocks of a PLL except that of a phase comparator
Hello, Can you tell me how to set up a multiplier for AC analysis of SIMPLIS? Thanks ynhe
can u tell me about an IC which can multiply two analog signals
The physical signals in everyday life are all analog. Computers use digital signals and processing methods. Before and after digital signal processing, we should use analog signals and processing methods. Due to the advantages of digital signal processing compared to the analog signal processing, DSPs are dominantly used rather than ASPs. (...)
I need to use an analog multiplier in my circuit like AD633. i need to multiply a message signal with the carrier. Can anyone give an appropriate IC?
hi. u can find it in one of these cites :
here the 4 PMOS transistors are in saturation and all other NMOS transistors are linear. can anybody explain me how this multiplier works ? if anybody could explain it with equations it will be really helpful well the o/p is taken as vo1-vo2= (kp/(kn*km))*(xy)
an arithmetic divider that operates ideally at any frequency Keep on dreaming. From the existing analog multiplier/divider variants, only "gilbert cell" (gm multiplier) is wideband. Log/antilog offers higher dynamic range but is restricted to MHz bandwidth at best, hall sensor multipliers (rather unusual) possibly (...)
If you have the analogLib: pvcvs2 or ahdlLib multiplier or functional multiplier.
A common way to do analog multiplication is with a Gilbert Cell.
Sorry. The CD40xx Cmos digital ICs are not the same as the AD734 analog IC.
which factor and which type of input given to the multiplier circuit for DC characteristics on analog multiplier? - - - Updated - - - thanks in advance
analog Devices AD633 is a good general purpose analog multiplier.
If you use an analog multiplier and feed your signal into both inputs you will get a double frequency output and a DC output. Capacitor coupling will eliminate the DC. These chips go by MPY pefixes. The old Burr Brown now bought by TI has some. Here is one If you want a cheaper form, use
CV104 I got one Burr-Brown MPY634 analog multiplier but for ranges I am going to use it is fine, or seems fine to me. thank you. zanove
To expand on Flatulent's response, you can build a four quadrant multiplier out of Gilbert cells (they can be constructed out of <10 discrete transistors). Refer to the following link:
An analog multiplier makes a nice modulator, if you don't need much power. Put the carrier on the X input, and the audio on the y input, or vice-versa. Folow this with a pwer stage with the appropriate power capability.
nemolee, do you want an analog multiplier or a digital multiplier?
I've read that in a mixer's output there is the sum and subtraction of two input signals, by multiplying both signals due to non-linearity of a device. There P1dB curve shows a region where Pout is lineal with respect to Pin, so if the device works in this lineal region, why there is a multiplication in its output ? Hope my question is clear
There are severasl ways to get a double frequency: You can use a designed CI but they are for GHz frequencies. There are several ways to implement them: use an analog multiplier and in both input put the signal you want to double the frequency, at output yo need a band pass filter with center fequency at double of the frequency of the signal.
how to implement a square root extractor ?The input is analog voltage signal. Most of the cases are implemented by analog multiplier
Piierre, Run the signal through a highly non-linear circuit, such as a squaring circuit (analog multiplier with x, y inputs tied together) or a rectifier. This will produce an output consisting of: . 1) Original signals . 2) Harmonics of the original signals. . 3) Intermodulation (IM) products (signal whose frequencies are equal to the sum
elec_eng, A comparator will provide a square wave of the same frequency, but the output amplitude would be a function of the comparator supply voltage, and would be independent of the amlitude of the sine wave input. . To provide amplitude control, you would need some kind of regulator. An analog multiplier could be used as the gain controller.
Hi, are there any ideas how to square / squareroot a signal in the analog world? This should not be done with a DSP! Ideally, I'd like to build up a circuit with the following transfer function: OUTPUT=√(x?+y?) -> Square signal x, square signal y, sum them up, squareroot the result I've already found multipliers such as the (...)
You can use analog multiplier, but it will be actually regulated attenuator instead of VGA. So probably you will have to place an amplifier stage after the analog multiplier.
If the application is low power, you can use a full wave rectifier and a bandpass filter centered on 60Hz - just simulate a full wave bridge in PSpice and see that the output spectrum has a strong component at 2*Fin. Also you can use: - an analog multiplier - as salam2000 said - like MC1496 - see the datasheet it has an example of a fre
Hi Im trying to do some basic AC power measurment 240V AC 50Hz. I have a Current Transformer and a Voltage Transformer and I want to measure the phase difference between the two signals. I need to do this with just an analogue circuit as it needs to be very fast. Anyone know of a simple way to acheive this??? Thanks In advance for your
I don't exactly understand what's your starting point. If you have a sine signal originally, I would use an analog multiplier or a JFET/MOSFET as controllable resistor. If it's a square wave, filters as suggested should help.
Doesn't work without an analog multiplier or divider, respectively a circuit with similar properties. But feasible anyway.
can anyone has worked on DSP kit TMS320C6711 to implement the project My project is on this kit "To implement BPSK modulator using this kit" but i m facing problems in using this kit actually i have to implement the complete block diagram of bpsk on this kit eg analog multiplier then phase shifter then NRZ coding etc so this kit has the C lang
can anyone has worked on DSP kit TMS320C6711 to implement the project My project is on this kit "To implement BPSK modulator using this kit" but i m facing problems in using this kit actually i have to implement the complete block diagram of bpsk on this kit eg analog multiplier then phase shifter then NRZ coding etc so this kit has the C lang