Digitally Controlled High Frequency VGA – Circuit Wiring ...
Digitally Controlled High Frequency VGA. Posted by Circuit Diagram in Lighting Circuits. Variable gain amplifiers (VGAs) can be used in may types of systems, such as radio receivers. In this system, the input signal voltage depends on an uncontrolled variable, such as distance to the transmitter. To ensure that the input signal amplitude ... Digitally Controlled High Frequency VGA_Circuit Diagram World
The bandwidth of VGA in the following figure has high bandwidth, ranging from 115MHz at high gain to 225MHz at low gain, so we can use this circuit in the RF signal path without degrading the signal. The DAC in this circuit can be upgraded, but the level shifter op amp limits the speed at which you can update the gain of the VGA to 2MHz. Digital Control VGAs | Analog Devices
Analog Devices digital controlled variable gain amplifiers provide discrete levels of gain control over a fixed number of control bits for a variety of audio and optical frequency bands. Our VGAs improve the dynamic range of a circuit by allowing users to adjust the amplitude of a signal in real time, which is critical for a number of applications EDN Access — 07.18.96 High frequency VGA has digital control
Design Ideas:July 18, 1996 High frequency VGA has digital control. Ronald Mancini, Harris Semiconductor, Melbourne, FL. You can use variable gain amplifiers (VGAs) in many types of systems, such as radio receivers, in which the input signal voltage depends on an uncontrolled variable, such as distance to the transmitter. LT5554 Broadband Ultra Low Distortion 7 Bit Digitally ...
Controlled VGA The LT®5554 is a 7 bit digitally controlled programmable gain (PG) ampliﬁ er with 16dB gain control range. It consists of a 50Ω input variable attenuator, followed by a high linearity variable transconductance ampliﬁ er. The coarse 4dB input attenuator step is implemented via 2 bits of digital control (PG5, PG6). The ﬁ ne ... AN9641: High Frequency VGA Has Digital Control
High Frequency VGA Has Digital Control APPLICATION NOTE AN9641 Rev 1.00 Page 1 of 2 Apr 1998 AN9641 Rev 1.00 Apr 1998 Introduction You can use variable gain amplifiers (VGAs) in many types of systems, such as radio receivers, in which the input signal voltage depends on an uncontrolled variable, such as distance to the transmitter. RF and Video – Page 5 – Electronic Circuit Diagram
Digitally Controlled High Frequency VGA. May 16, 2010 Rust. Variable gain amplifiers (VGAs) can be used in may types of systems, such as radio receivers. In this system, the input signal voltage depends on an uncontrolled variable, such as distance to the transmitter. To ensure that the input signal amplitude matches the input voltage range of ... 45 dB Digitally Controlled VGA LF to 600 MHz AD8369
The AD8369 is a high performance digitally controlled variable gain amplifier (VGA) for use from low frequencies to a –3 dB frequency of 600 MHz at all gain codes. The AD8369 delivers excellent distortion performance: the two tone, third order intermodulation distortion is –69 dBc at 70 MHz for a 1 V p p composite output into a 1 kW load. High frequency high dynamic range CMOS VGA
A novel CMOS variable gain amplifier (VGA) with high frequency and high dynamic range is proposed. The VGA has a controllable gain range of 50 dB 50 dB which can be controlled by adjusting the ... Wide Dynamic Range, High Speed, Digitally Controlled VGA ...
Wide Dynamic Range, High Speed, Digitally Controlled VGA Data Sheet ADL5201 Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. 100 MHz to 4000 MHz RF IF Digitally Controlled VGA Data ...
RF IF gain control . GENERAL DESCRIPTION . The . ADL5243. is a high performance, digitally controlled variable gain amplifier operating from 100 MHz to 4000 MHz. The VGA integrates two high performance amplifiers and a digital step attenuator (DSA). Amplifier 1 (AMP1) is an internally matched gain block amplifier with 20 dB gain, and dB Linear Variable Gain Amplifier Design in 0.18 μm ...
Background and Objective: Based on the different gain switching mechanisms, variable gain amplifiers can be categorized as analog controlled VGA and digital controlled programmable gain amplifier (DVGA). A complementary metal oxide semiconductor (CMOS) linear in dB variable gain amplifier (VGA) design in TSMC 0.18 μm process was presented and a new approach was proposed in this study. LMH6515 600 MHz, Digital Controlled, Variable Gain ...
It combines precision gain control with a low noise, ultra linear, differential amplifier. Typically, the LMH6515 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range. ADL5202 Datasheet and Product Info | Analog Devices
The ADL5202 is a digitally controlled, variable gain, wide bandwidth amplifier that provides precise gain control, high output IP3, and low noise figure. The excellent distortion performance and high signal bandwidth make the ADL5202 an excellent gain control device for a variety of receiver applications. Characteristic impedance
The characteristic impedance () of an infinite transmission line at a given angular frequency is the ratio of the voltage and current of a pure sinusoidal wave of the same frequency travelling along the line. This definition extends to DC by letting tend to 0, and subsists for finite transmission lines until the wave reaches the end of the line. In this case, there will be in general a ... Designing a TMS320F280x Based Digitally Controlled DC DC ...
Designing a TMS320F280x Based Digitally Controlled . DC DC Switching Power Supply . Shamim Choudhury Digital Power, C2000 DSP and System Power Management . ABSTRACT . This application report presents a TMS320F280x based digital control design and implementation of a high frequency dc dc switching power supply. Starting with a dc dc Digitally controlled oscillator (DCO) based architecture ...
Abstract— A novel digitally controlled oscillator (DCO) based architecture for frequency synthesis in wireless RF applications is proposed and demonstrated. It deliberately avoids any use of an analog tuning voltage control line. Fine frequency resolution is achieved through high speed dithering. Other imperfections (PDF) Low Voltage Current Mode Digitally Controlled VGA ...
Low Voltage Current Mode Digitally Controlled VGA Based on Digitally Programmble Current Conveyors Article (PDF Available) in Midwest Symposium on Circuits and Systems · August 2008 with 33 Reads AD8369 45 dB Digitally Controlled VGA LF to 600 MHz Data ...
The AD8369 is a high performance digitally controlled variable gain amplifier (VGA) for use from low frequencies to a –3 dB frequency of 600 MHz at all gain codes. The AD8369 delivers excellent distortion performance: the two tone, third order intermodulation distortion is –69 dBc at 70 MHz for a 1 V p p composite output into a 1 kW load. Digitally Controlled High Efficiency and High Power ...
I manage to C2000 digital power system application team at Texas Instruments. Today in this presentation, we'll cover digitally control high efficiency and high power density power factor correction circuits. Specifically this presentation will cover C2000 Microcontroller based digitally controlled high efficiency and high power density PFC ... 8 ChannelVariable GainAmplifier (VGA) With Octal High SpeedADC
Programmable Cutoff Frequency (7.5, 10, or device. 14MHz) Each of the eight differential inputs is buffered, • Clamping accepts up to 2Vpp maximum input swing, and is • Analog to DigitalConverter (ADC) followed by a VGA with a gain range from – 5dB to 31dB. The VGA gain is digitally controlled, and the A CMOS Norton amplifier based digitally controlled VGA for ...
A CMOS Norton amplifier based digitally controlled VGA for low power wireless applications. ... Their high frequency behavior, diﬀerences in biasing details and noise analysis are also compared ... Variable gain amplifier
A digitally controlled amplifier (DCA) is a variable gain amplifier that is digitally controlled. The digitally controlled amplifier uses a stepped approach giving the circuit graduated increments of gain selection. This can be done in several fashions, but certain elements remain in any design. 16 CHANNEL VARIABLE GAIN AMPLIFIER (VGA) WITH OCTAL HIGH ...
– Digital Gain Control accepts up to 1V PP maximum input swing and it is •3rd Order Anti Aliasing Filter With followed by a VGA with a gain range from –5dB to Programmable Cut Off Frequency (7.5, 10 and 31dB. The VGA gain is digitally controlled and the 14MHz). gain curves versus time can be stored in memory, DIGITALLY CONTROLLED CMOS BALANCED OUTPUT TRANSCONDUCTOR ...
A digitally controlled balanced output transconductor (DCBOTA) is proposed and analyzed. The proposed DCBOTA is based on the BOTA given in Ref. 1 and MOS switches. The DCBOTA transconductance is tunable in a range of 2 n 1 times using n bits control word. A CMOS Norton amplifier based digitally controlled VGA for ...
VGA DESIGN REQUIREMENTS off chip high frequency intermediate frequency (IF) filters and amplifiers . Alternatively, other receiver architectures In this paper, a new VGA circuit based on the Norton ampli like the zero IF, low IF, and wide band double conversion fier is presented. ADL5243 Datasheet and Product Info | Analog Devices
The ADL5243 is a high performance, digitally controlled variable gain amplifier operating from 100 MHz to 4000 MHz.The VGA integrates two high performance amplifiers and a digital step attenuator (DSA). Amplifier 1 (AMP1) is an internally matched gain block amplifier with 20 dB gain, and Amplifier 2 (AMP2) is a broadband ¼ W driver amplifier that r A Digitally Controlled Variable Gain Amplifier for Ultra ...
control scheme based on binary weights to control the gain of the VGA. At the heart of the VGA is a Gilbert Cell whose gain is a function of the tail current. The tail current is controlled by the Digital Control Circuit which in turn is operated by a DSP section that is not a part of our design. The gain of the VGA is linear in magnitude ... 16 CHANNEL VARIABLE GAIN AMPLIFIER (VGA) WITH OCTAL HIGH ...
– Digital Gain Control accepts up to 1VPP maximum input swing and it is • 3rd Order Anti AliasingFilter With followed by a VGA with a gain range from – 5dB to Programmable Cut OffFrequency (7.5, 10 and 31dB. The VGA gain is digitally controlled and the 14MHz). gain curves versus time can be stored in memory, Digitally controlled oscillator for all digital frequency ...
Digitally controlled oscillator for ADFLL’s 5 to use a voltage controlled ring oscillator and a digital to analog converter (this implementation is depicted in the ﬁgure). The output of the DCO is usually a high frequency signal, noted OSC in the ﬁgure. The phase of the OSC signal should be compared with a precise phase of the signal A 3.5 GHz phase shifter of high input power range with ...
Request PDF | A 3.5 GHz phase shifter of high input power range with digitally controlled VGA | A high input power range phase shifter is designed and fabricated on 0.18 μm CMOS technology. With ... ADC Driver Offers Digitally Controlled Gain | Microwaves ...
Digitally controlled gain in the new MAX2055 variable gain amplifier (VGA) from Maxim Integrated Products (Sunnyvale, CA) allows the device to quickly achieve optimum signal levels for analog to digital converters (ADCs). Designed for intermediate frequencies (IFs) from 30 to 300 MHz, the MAX2055 is ... RF Lambda
High Efficiency Power Amplifier; VGA Amplifier; Low Phase Noise Amplifier; Front Overdrive Protected Amplifier; ALC Automatic Level Control Amplifier; PIN, GaAs and GaN Switch; USB Control Solid State Switch; Electromechanical Switch; Digital Step Phase Shifter; Voltage Control Phase Shifter; Digital Control Step Attenuator; Voltage Control ...
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