10-Bit, 210 MSPS TxDAC D/A Converter AD9740
... rates up to 210 MSPS. The AD9740’s low power dissipation makes it well suited for portable and low power applications. Its power dissipation can be further reduced to 60 mW with a slight degradation in performance by lowering the full-scale current output. In addition, a power-down mode reduces the ...
... rates up to 210 MSPS. The AD9740’s low power dissipation makes it well suited for portable and low power applications. Its power dissipation can be further reduced to 60 mW with a slight degradation in performance by lowering the full-scale current output. In addition, a power-down mode reduces the ...
coupling and decoupling secondary dq currents based brushless
... structure which should bring further advantages in terms of higher reliability and maintenance-free operation with immediate implications on operation and maintenance cost reductions. These can be particularly high in off-shore wind turbine Installations (5), where the BDFM use would be highly benef ...
... structure which should bring further advantages in terms of higher reliability and maintenance-free operation with immediate implications on operation and maintenance cost reductions. These can be particularly high in off-shore wind turbine Installations (5), where the BDFM use would be highly benef ...
MAX9987/MAX9988 +14dBm to +20dBm LO Buffers/Splitters with ±1dB Variation General Description
... The MAX9987/MAX9988 LO amplifiers/splitters each consist of a single input amplifier, a two-way passive power splitter, two separate output amplifiers, as well as a third buffer amplifier to drive the LO’s PLL. The bias currents for the amplifiers are adjustable through off-chip resistors. This allo ...
... The MAX9987/MAX9988 LO amplifiers/splitters each consist of a single input amplifier, a two-way passive power splitter, two separate output amplifiers, as well as a third buffer amplifier to drive the LO’s PLL. The bias currents for the amplifiers are adjustable through off-chip resistors. This allo ...
lighting control by strand electric
... voltage once more. However the thyristor is what is known as a controlled rectifier and regulation can be applied to the pair from a small dimmer lever in such a way that each passes less and less of its half cycle. In consequence the voltage averages at less and less until stopped off compl etely. ...
... voltage once more. However the thyristor is what is known as a controlled rectifier and regulation can be applied to the pair from a small dimmer lever in such a way that each passes less and less of its half cycle. In consequence the voltage averages at less and less until stopped off compl etely. ...
Speed-up charge pump circuit to improve lock time for integer
... said second operating frequency While the second con trol circuit is disconnected from the input terminal. 2. The system of claim 1 Wherein said circuitry includes a sWitch coupled to said input terminal, a charge pump coupled to said sWitch and remote from said input terminal and a timer controllin ...
... said second operating frequency While the second con trol circuit is disconnected from the input terminal. 2. The system of claim 1 Wherein said circuitry includes a sWitch coupled to said input terminal, a charge pump coupled to said sWitch and remote from said input terminal and a timer controllin ...
AP7331 300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT LOW DROPOUT LINEAR REGULATOR
... resistance, and ambient temperature, the thermal protection circuit may cycle on and off. This cycling limits the heat dissipation of the regulator, protecting it from damage due to overheating. ...
... resistance, and ambient temperature, the thermal protection circuit may cycle on and off. This cycling limits the heat dissipation of the regulator, protecting it from damage due to overheating. ...
CURRICULUM VITAE - Northeastern University
... A. Shrivastava, “Methods and apparatus for low input voltage bandgap reference architecture and circuits” US-9,158,320 A. Shrivastava, and Y. Ramadass “Apparatus and method for controlling inductor current in a switch mode power supply” US-9,164,528 ...
... A. Shrivastava, “Methods and apparatus for low input voltage bandgap reference architecture and circuits” US-9,158,320 A. Shrivastava, and Y. Ramadass “Apparatus and method for controlling inductor current in a switch mode power supply” US-9,164,528 ...
ADM3251E 数据手册DataSheet 下载
... 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. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog ...
... 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. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog ...
2-W Stereo Audio Power Amplifier w/DirectPath Stereo Headphone
... Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operations of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to abso ...
... Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operations of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to abso ...
Simulation Tool for.. - Faculdade de Engenharia
... The EMI simulation is obtained from the input current harmonic analysis of the studied converter and from the simulation of the LISN and EMI receiver. The high frequency current harmonics flows through the LISN which is a current voltage transducer (fig. 2) the voltage at the output of the LISN is a ...
... The EMI simulation is obtained from the input current harmonic analysis of the studied converter and from the simulation of the LISN and EMI receiver. The high frequency current harmonics flows through the LISN which is a current voltage transducer (fig. 2) the voltage at the output of the LISN is a ...
Mains Power And Home Audio
... not travel along mains cables for long distances – if they did, we would all be using the mains to pick up our radio, telephone and TV signals! These high frequency signals do however enter cables and present a problem locally, close to your audio equipment. The main source of audible sonic degradat ...
... not travel along mains cables for long distances – if they did, we would all be using the mains to pick up our radio, telephone and TV signals! These high frequency signals do however enter cables and present a problem locally, close to your audio equipment. The main source of audible sonic degradat ...
UCP 3500 - Ward Davis Associates
... In some applications, particularly those with machinery connected to a PDU, an Emergency Power Off (EPO) may be required. An EPO is a large, prominently placed push button used to disconnect power to all devices connected to the PDU. These buttons are intended to be easy to find and press in an emer ...
... In some applications, particularly those with machinery connected to a PDU, an Emergency Power Off (EPO) may be required. An EPO is a large, prominently placed push button used to disconnect power to all devices connected to the PDU. These buttons are intended to be easy to find and press in an emer ...
Exponential Waveforms
... Figure 11. Oscilloscope Control Panel For transient measurements you will typically want both Channel A and B inputs set to DC. The Trigger set to AUTO and the Time Base set to Y/T. This last setting shows the input voltages as a function of time. Unlike a real oscilloscope the EWB scope has a ZOOM ...
... Figure 11. Oscilloscope Control Panel For transient measurements you will typically want both Channel A and B inputs set to DC. The Trigger set to AUTO and the Time Base set to Y/T. This last setting shows the input voltages as a function of time. Unlike a real oscilloscope the EWB scope has a ZOOM ...
Voltage Regulators from Siemens
... voltage regulator shall be included to indicate the tap changer position. The position indicator shall be furnished with reflecting numbers and a plexiglass face plate and shall be slanted at a 45-degree angle for ease of reading from the ...
... voltage regulator shall be included to indicate the tap changer position. The position indicator shall be furnished with reflecting numbers and a plexiglass face plate and shall be slanted at a 45-degree angle for ease of reading from the ...
AD8628
... amplifiers. Using Analog Devices, Inc., topology, these zerodrift amplifiers combine low cost with high accuracy and low noise. No external capacitor is required. In addition, the AD8628/ AD8629/AD8630 greatly reduce the digital switching noise found in most chopper-stabilized amplifiers. With an of ...
... amplifiers. Using Analog Devices, Inc., topology, these zerodrift amplifiers combine low cost with high accuracy and low noise. No external capacitor is required. In addition, the AD8628/ AD8629/AD8630 greatly reduce the digital switching noise found in most chopper-stabilized amplifiers. With an of ...
MAX1080/MAX1081 300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference General Description
... and four software-selectable power modes (normal operation, reduced power (REDP), fast power-down (FASTPD), and full power-down (FULLPD)). These devices can be programmed to automatically shut down at the end of a conversion or to operate with reduced power. When using the power-down modes, accessin ...
... and four software-selectable power modes (normal operation, reduced power (REDP), fast power-down (FASTPD), and full power-down (FULLPD)). These devices can be programmed to automatically shut down at the end of a conversion or to operate with reduced power. When using the power-down modes, accessin ...
AND8490 - Theory and Applications of the NCP1294, Switching
... at a suboptimal level. If the algorithm is long, this can mean a significant amount of time is spent not utilizing the maximum power of a solar panel. Dynamic MPPT ...
... at a suboptimal level. If the algorithm is long, this can mean a significant amount of time is spent not utilizing the maximum power of a solar panel. Dynamic MPPT ...
Introduction to Energy Transfer Sampling
... In a superheterodyne receiver, the function and purpose of the first frequency down-‐‑converter/mixer working in conjunction with the first local oscillator is to convert a higher frequency radio frequency carr ...
... In a superheterodyne receiver, the function and purpose of the first frequency down-‐‑converter/mixer working in conjunction with the first local oscillator is to convert a higher frequency radio frequency carr ...
Dynamic Current Mode Inverter for Ultra-Low Power Near
... CMOS logic. In addition, the reliability and robustness of nearthreshold circuits are rarely explored. CMOS based logic suffers from inherent limitations at low supply voltages, which include performance degradation, reduced noise margin, and lower output voltage swing. One potential solution to mit ...
... CMOS logic. In addition, the reliability and robustness of nearthreshold circuits are rarely explored. CMOS based logic suffers from inherent limitations at low supply voltages, which include performance degradation, reduced noise margin, and lower output voltage swing. One potential solution to mit ...
Sources of Variation
... since the 130 nm node [13]. Thus, it is exceeding more and more the minimum feature sizes, i.e. critical dimensions (CD), of transistors and the device structure gets increasingly blurred due to diffraction, see Fig. 2.1(c). Chip manufacturer try to reduce this effect by applying immersion lithograp ...
... since the 130 nm node [13]. Thus, it is exceeding more and more the minimum feature sizes, i.e. critical dimensions (CD), of transistors and the device structure gets increasingly blurred due to diffraction, see Fig. 2.1(c). Chip manufacturer try to reduce this effect by applying immersion lithograp ...
Pulse-width modulation
Pulse-width modulation (PWM), or pulse-duration modulation (PDM), is a modulation technique used to encode a message into a pulsing signal. Although this modulation technique can be used to encode information for transmission, its main use is to allow the control of the power supplied to electrical devices, especially to inertial loads such as motors. In addition, PWM is one of the two principal algorithms used in photovoltaic solar battery chargers, the other being MPPT.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. The longer the switch is on compared to the off periods, the higher the total power supplied to the load.The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible. Typically switching has to be done several times a minute in an electric stove, 120 Hz in a lamp dimmer, from few kilohertz (kHz) to tens of kHz for a motor drive and well into the tens or hundreds of kHz in audio amplifiers and computer power supplies.The term duty cycle describes the proportion of 'on' time to the regular interval or 'period' of time; a low duty cycle corresponds to low power, because the power is off for most of the time. Duty cycle is expressed in percent, 100% being fully on.The main advantage of PWM is that power loss in the switching devices is very low. When a switch is off there is practically no current, and when it is on and power is being transferred to the load, there is almost no voltage drop across the switch. Power loss, being the product of voltage and current, is thus in both cases close to zero. PWM also works well with digital controls, which, because of their on/off nature, can easily set the needed duty cycle.PWM has also been used in certain communication systems where its duty cycle has been used to convey information over a communications channel.