Differential Amplifier

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Differential Amplifier Wikipedia


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Differential Amplifier The Voltage Subtractor


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5 hours ago The Differential Amplifier circuit is a very useful op-amp circuit and by adding more resistors in parallel with the input resistors R1 and R3, the resultant circuit can be made to either “Add” or “Subtract” the voltages applied to their respective inputs. One of the most common ways of doing this is to connect a “Resistive Bridge

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Differential Amplifier An Overview ScienceDirect Topics


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1 hours ago The differential amplifier (or subtractor) has two inputs and one output, as shown in Figure 2.84. The differential amplifier yields an output voltage which is proportional to the difference between the inverting and the non-inverting input signals. By applying the superposition principle, the individual effects of each input on the output can

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Chapter 12: Differential Amplifiers [Analog Devices Wiki]


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Just Now The differential amplifier can be implemented with BJTs or MOSFETs. A differential amplifier multiplies the voltage difference between two inputs (Vin+ - Vin-) by some constant factor Ad, the differential gain. It may have either one output or a pair of outputs where the signal of interest is the voltage difference between the two outputs.

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Differential Amplifiers – Mouser


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8 hours ago Differential Amplifiers High-precision (40 uV offset), 2-MHz, 88dB CMRR, low-power, e-trim difference amplifier 8-SOIC -40 to 125. Enlarge. Mfr. Part #. INA592IDT. Mouser Part #. 595-INA592IDT. New Product. Texas Instruments.

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Op Amp Differential Amplifier Circuit Voltage Subtractor


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4 hours ago A Differential Amplifier, also known as Difference Amplifier, is a very useful op-amp configuration that amplifies the difference between the input voltages applied. A differential amplifier is a combination of both inverting and non-inverting amplifiers. It uses a negative feedback connection to control the differential voltage gain.

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What Is Differential Amplifier? Definition And Working Of


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6 hours ago Definition: Differential Amplifier is a device that is used to amplify the difference in voltage of the two input signals. Differential Amplifier is an important building block in integrated circuits of analog system. It typically forms input stages of operational amplifiers.In simple words, we can say It is a device that amplifies the difference of 2 input signals.

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Differential Amplifier: What Is It? (OP Amp & BJT Circuit


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2 hours ago What is a Differential Amplifier? A differential amplifier (also known as a difference amplifier or op-amp subtractor) is a type of electronic amplifier that amplifies the difference between two input voltages but suppresses any voltage common to the two inputs. A differential amplifier is an analog circuit with two inputs (V 1 and V 2) and one output (V 0) in which the output is ideally

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Basic Amplifiers And Differential Amplifier


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7 hours ago Differential Amplifier CSE 577 Spring 2011 Insoo Kim, Kyusun Choi Mixed Signal CHIP Design Lab. Department of Computer Science & Engineering The Penn State University. In today’s analog design, simulation of circuits is essential because the behavior of short-channel MOSFETs cannot be

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FullyDifferential Amplifiers (Rev. E)


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7 hours ago Fully-Differential Amplifiers 5. 3 Voltage Definitions. To understand the behavior of a fully-differential amplifier, it is important to understand the voltage definitions used to describe the amplifier. Figure 3 shows a block diagram used to represent a fully-differential amplifier and its …

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Differential Amplifier Stages MIT OpenCourseWare


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Just Now Differential Amplifier Stages - Large signal behavior General features: symmetry, inputs, outputs, biasing (Symmetry is the key!) Large signal transfer characteristic . Difference- and common-mode signals. Decomposing and reconstructing general signals . Half-circuit incremental analysis techniques. Linear equivalent half-circuits

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Differential Amplifiers – Mouser


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5 hours ago Differential Amplifiers High-precision (40 uV offset), 2-MHz, 88dB CMRR, low-power, e-trim difference amplifier 8-VSSOP -40 to 125. Enlarge. Mfr. Part #. INA592IDGKT. Mouser Part #. 595-INA592IDGKT. Texas Instruments. Differential Amplifiers High-precision (40 uV offset), 2-MHz, 88dB CMRR, low-power, e-trim difference amplifier 8-VSSOP -40 to

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Differential Amplifiers Analog Devices


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4 hours ago Differential amplifiers from Analog Devices are highly integrated and optimized for differential signaling applications. These devices have inherent common-mode rejection properties, provide low harmonic distortion, and have excellent output gain and phase matching. Whether you’re driving or receiving signals over long cable lengths, driving a bala

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A Deeper Look Into Difference Amplifiers Analog Devices


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4 hours ago To roll off the response of the difference amplifier, some designers attempt to form a differential filter by adding capacitor C1 between the two op amp inputs, as shown in Figure 6. This is acceptable for in-amps, but not for op amps. V OUT will move up and down to close the loop through R2. At dc, this isn't a problem, and the circuit behaves

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Differential Amplifier : Design, Working, Configurations


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4 hours ago The differential amplifier is a basic operational amplifier that consists of three basic terminals. Among those, two are of input that is inverting and the non-inverting terminals. Hence, these amplifiers are the circuits that can perform various operations mainly it is the difference between the two applied input signals.

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Differential Amplifier Explanation With Block Diagram


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3 hours ago Differential amplifier is designed with active loads to increase the differential mode voltage gain. The open circuit voltage gain of an op-amp is needed to be as large as possible. This is got by cascading the gain stages which increase the phase shift and the amplifier also becomes vulnerable to oscillations.

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Lecture 16 Differential Amplifiers –I Basics


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1 hours ago Ideal Differential Amplifiers An ideal differential amplifier amplifies the difference signal between two inputs: +-Avd vi1 vi2 vi1 vi2 The need for differential amplifiers: Differential amplifiers are used to remove unwanted signals tha t are common to both input signals. For example, in many cases useful informati on is carried by the

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Differential Amplifier Discrete Semiconductor Circuits


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4 hours ago An ideal differential amplifier ignores all common-mode voltage, which is whatever level of voltage common to both inputs. For example, if the inverting input is at 3 volts and the noninverting input at 2.5 volts, the differential voltage will be 0.5 volts (3 - 2.5) but the common-mode voltage will be 2.5 volts since that is the lowest input

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Understanding The Transistor Differential Amplifier


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CMOS Differential Amplifier


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4 hours ago Differential Amplifier Implementation: (a) Differential Amplifier with PMOS current mirror load, (b) Small Signal Equivalent Circuit for Purely Differential Input Signal. An active load acts as a current source. Thus it must be biased such that their currents add up …

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Building A Differential Amplifier Operational Amplifiers


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8 hours ago An op-amp with no feedback is already a differential amplifier, amplifying the voltage difference between the two inputs. However, its gain cannot be controlled, and it is generally too high to be of any practical use. So far, our application of negative feedback to op-amps has resulting in the practical loss of one of the inputs, the resulting

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MOSFET Differential Amplifier Boston University


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8 hours ago differential amplifiers. The latter are used as input stages in op-amps, video amplifiers, high-speed comparators, and many other analog-based circuits. MOSFET differential amplifiers are used in integrated circuits, such as operational amplifiers, they provide a …

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OpAmp As A Differential Amplifier Circuit With Function


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9 hours ago Op-Amp as a Differential Amplifier. An op-amp is a differential amplifier which has a high i/p impedance, high differential-mode gain, and low o/p impedance. When the negative feedback is applied to this circuit, expected and stable gain can be built. Usually, some types of differential amplifier comprise various simpler differential amplifiers.

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Solving The Differential Amplifier – Part 1 – Mastering


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1 hours ago The differential amplifier, also known as the difference amplifier, is a universal linear processing circuit in the analog domain. Why? Because you can achieve any linear transfer function with it. It can be reduced to a simple inverter, a voltage follower or a gain circuit. It can also be transformed in a summing amplifier

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Differential Amplifier Working & Applications


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2 hours ago A differential amplifier is an op amp circuit which is designed to amplify the difference input available and reject the common-mode voltage. It is used for suppressing the effect of noise at the output. Since the noise present will be having the same amplitude at the two terminals of the op-amp.

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Differential Amplifier Basics, Usage And Differences


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3 hours ago A differential amplifier has two inputs, one inverting and one non-inverting. Modern diff amps usually sit on a single chip. Inside the microchip or pair of discrete transistors, the positive and negative signals are added and the resultant becomes the single output.

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Differential And Common Mode Gain Lecture ITTC


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9 hours ago * An ideal differential amplifier has zero common-mode gain (i.e., A cm =0)! * In other words, the output of an ideal differential amplifier is independent of the common-mode (i.e., average) of the two input signals. * We refer to this characteristic as common-mode suppression. Typically, real differential amplifiers exhibit small, but non-zero

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LECTURE 19 DIFFERENTIAL AMPLIFIER AICDESIGN.ORG


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9 hours ago A differential amplifier is an amplifier that amplifies the difference between two voltages and rejects the average or common mode value of the two voltages. Differential and common mode voltages: v 1 and v 2 are called single-ended voltages. They are voltages referenced to ac

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Differential Amplifier Using Transistors ElectroSome


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9 hours ago As the name indicates Differential Amplifier is a dc-coupled amplifier that amplifies the difference between two input signals. It is the building block of analog integrated circuits and operational amplifiers (op-amp). One of the important feature of differential amplifier is that it tends to reject or nullify the part of input signals which is common to both inputs.

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What Is A Differential Amplifier. Electronics Post


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1 hours ago A differential amplifier is a circuit that can accept two input signals and amplify the difference between these two input signals. Fig.1 shows the block diagram of a differential amplifier . There are two input voltages v 1 and v 2. This amplifier amplifies the difference between the two input voltages. Therefore the output voltage is,

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Differential Amplifier Circuit Tutorial Using BJT And Opamp


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2 hours ago Differential amplifier is a closed loop amplifier circuit which amplifies the difference between two signals. Such a circuit is very useful in instrumentation systems. Differential amplifiers have high common mode rejection ratio (CMRR) and high input impedance. Differential amplifiers can be made using one opamp or two opamps.

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Differential Amplifier Or Voltage Subtractor Circuit


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Introduction To Differential Amplifier The Engineering


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9 hours ago Hello friends, I hope you all are doing great. In today’s tutorial, we will have a look at Introduction to Differential Amplifier.It is a type of amplifier which amplify the difference of two input signal. There are 2 modes of operation for this amplifier first is a common mode in which both inputs are the same and the second one is a differential mode in which two inputs are different.

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Differential Amplifier An Overview ScienceDirect Topics


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6 hours ago The differential amplifier input stage needs a steady d.c. current at each input, in addition to the input signal, to make it work. This is called input bias current. (This is explained fully in Chapter 5 and 6, that this bias current is needed for each of the input transistors.) A perfectly symmetrical circuit will draw equal currents but, in

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Section G3: Differential Amplifiers


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2 hours ago The differential amplifier may be implemented using BJTs or FETs and is a commonly used building block in analog IC design. We are going to be concentrating on the BJT implementation of the differential pair as emitter-coupled, common-emitter (or emitter-resistor) amplifiers. In

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Differential Amplifier It's Working 4 Important


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3 hours ago A differential amplifier is basically an electronic circuit which consists of two inputs, inverting and non-inverting input operated in a negative feedback configuration. The differential amplifier basically amplifies the difference between the applied input voltages in these two input terminals and rejects any common signal to these two input

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Fully Differential Amplifiers Products Operational


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9 hours ago Current sense amplifiers (160) Current sense amplifiers analog output (134) Current/voltage/power monitors (26) Difference amplifiers (29) Fully differential amplifiers (53) Instrumentation amplifiers (54) Operational amplifiers (op amps) (1449) Audio op amps (66) General-purpose op amps (777) High-speed op amps (GBW>=50MHz) (233) Power op amps

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Differential Amplifier Circuit : Working Using Transistors


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4 hours ago The differential amplifier circuit using transistors can be designed as shown in the figure below which consists of two transistors T1 and T2. These transistors and resistors are connected as shown in the circuit diagram. There are two inputs I1 & I2 and two outputs V1out & V2out in the differential amplifier

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Design Of Differential Amplifier Circuit Using Transistors


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Just Now Differential Gain Ad: Differential gain is the gain with which amplifier amplifies the difference between two input signals. It is denoted as A d. Vo = Ad (Vd) Where V d is the voltage difference between two input signals i.e. V d = V1 – V2. Ad= Vo / Vd. Differential gain in dB is given as. Ad(dB)= 20 log10 (Vo / Vd)

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DP304A Differential Amplifier Warner Instruments


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9 hours ago The DP-304A is a four channel AC/DC differential amplifier highly suited for EEG, EKG and extracellular recording. High input impedance. High common mode rejection: 120 dB at 60 Hz. Low noise with high gain. High tolerance to DC baselines. Details.

Common Mode Rejection: 120 dB min (1,000,000:1) at 60 Hz
Leakage Current: 1.0 pA typical
Input Resistance: 10 12 Ω typical
Voltage Gain, AC/DC: x10, x100, x1,000, x10,000

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1983 Alan R. 4:8387 (1983) TECHNICAL NOTE


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2 hours ago differential amplifier was removed, the noise level at the differential amplifier output increased (see Fig. 3A2). The corresponding frequency distribution recorded on the same spheres shows that the cv increased to 3.4%. Thus, the noise in these measurements due to the laser was 2.7%. Similarly, the krypton laser was operated at 530 nm

Publish Year: 1983
Author: John A. Steinkamp

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Differential Amplifier And Its Theory (With Circuit


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7 hours ago The differential amplifier, abbreviated as DIFF AMP, is the basic stage of an integrated OP AMP with differential input. Its design is, therefore, mainly related to IC fabrication techniques. However, employing discrete components it is also used in some circuits.

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Differential Amplifier Calculator – Mastering Electronics


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5 hours ago If you need to design a differential amplifier, here is a handy calculator. All you need to define are the input range, the output range and a choice of voltage reference. The differential amplifier was explained in different articles on this website. Solving the Differential Amplifier – Part 1, Part 2 and Part 3 shows a numerical example and

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What Is The Purpose Of Using A Differential Amplifier


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1 hours ago The op-amp configures this differential amplifier as the main circuit. The symbol shown below represents a differential amplifier. It has two inputs: V IN (+) and V IN (-). The output voltage is equal to a difference in voltage between the two inputs multiplied by the amp’s gain (A V):

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DifferentialAmplifier AnalogCMOSDesign Electronics


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7 hours ago The other advantage of differential amplifier is the increase in voltage swings. The peak to peak swing differential amplifier is equal to 2 [V DD - (V GS - V TH)]. In the circuit of above Figure if V in1 and V in2 has a large common mode disturbances or unequal common mode …

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Common Mode Operation And Configurations Differential


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6 hours ago The differential amplifier uses two transistors in common emitter configuration. If output is taken between the two collectors it is called balanced output or double ended output. While if the output is taken between one collector with respect to ground it iscalled unbalanced output or single ended output. If the signal is given to both the

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7.3 The BJT Differential Pair ITTC


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5 hours ago The differential pair is a differential amplifier—we express its performance in terms of differential and common-mode gains. HO: Small-Signal Analysis of the BJT Differential Pair V CC V EE R C I v O2 ()t v O1 ()t C Q 1 Q 2 R v 2 v BE1 +

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Frequently Asked Questions

What is the necessity of a differential amplifier?

Differential amplifiers are used mainly to suppress noise. Noise consists of typical differential noise and common-mode noise, of which the latter can easily be suppressed with an op-amp.

Why to use differential amplifiers?

Differential Amplifier Summary

  • A differential amplifier also known as difference amplifier is a useful op-amp configuration that amplifies the difference between the input voltages applied.
  • A differential amplifier is a combination of both inverting and non-inverting amplifiers. ...
  • The differential voltage gain of the amplifier is dependent on the ratio of the input resistances. ...

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How does a differential amplifier work?

A differential amplifier is a type of electronic amplifier that amplifies the difference between two input voltages but suppresses any voltage common to the two inputs. It is an analog circuit with two inputs and and one output in which the output is ideally proportional to the difference between the two voltages.

Is a differential amplifier an op amp?

Op-Amp as a Differential Amplifier. Differential amplifier is used as a series negative feedback circuit by using an op-amp. Usually, differential amplifier is used as a volume and automatic gain control circuit. Some of the differential amplifiers can be used for AM (amplitude modulation).

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