chapter 5 – cmos amplifiers
... If the two transconductances are balanced (gm1 = gm2), then the noise contribution of each device is divided by two. The total noise contribution can only be reduced by reducing the noise contribution of each device. (Basically, both M1 and M2 act like the “load” transistor and “input” transistor, s ...
... If the two transconductances are balanced (gm1 = gm2), then the noise contribution of each device is divided by two. The total noise contribution can only be reduced by reducing the noise contribution of each device. (Basically, both M1 and M2 act like the “load” transistor and “input” transistor, s ...
Jitter Reduction on High-Speed Clock Signals
... ”clean”, low-jitter clock signals. Traditionally, PLLs have been one of the most commonly used signal cleaning methods, but as higher frequencies are being used, the limits imposed by both the design complexity and performance of PLLs is being felt. This work shows that a purely feedforward jitter r ...
... ”clean”, low-jitter clock signals. Traditionally, PLLs have been one of the most commonly used signal cleaning methods, but as higher frequencies are being used, the limits imposed by both the design complexity and performance of PLLs is being felt. This work shows that a purely feedforward jitter r ...
TPA2032D1 数据资料 dataSheet 下载
... The TPA2032D1 (2V/V gain), TPA2033D1 (3V/V gain), and TPA2034D1 (4V/V gain) are 2.75-W high efficiency filter-free class-D audio power amplifiers, each in an approximately 1.5-mm × 1.5-mm wafer chip scale package (WCSP) that requires only one external component. The pinout is the same as the TPA2010 ...
... The TPA2032D1 (2V/V gain), TPA2033D1 (3V/V gain), and TPA2034D1 (4V/V gain) are 2.75-W high efficiency filter-free class-D audio power amplifiers, each in an approximately 1.5-mm × 1.5-mm wafer chip scale package (WCSP) that requires only one external component. The pinout is the same as the TPA2010 ...
UCC29950 CCM PFC and LLC Combo Controller
... The SUFG and SUFS are the control pins for an external start-up depletion mode FET. The use of a switched device here eliminates the static power dissipation in a conventional resistive start-up approach where a drop resistor from the rectified AC line to VCC is typically used. As a result standby p ...
... The SUFG and SUFS are the control pins for an external start-up depletion mode FET. The use of a switched device here eliminates the static power dissipation in a conventional resistive start-up approach where a drop resistor from the rectified AC line to VCC is typically used. As a result standby p ...
Changes to the FADC buffer circuits and ASIC mux out buffer/ADC
... However, the 3K3 values need to be reduced for amplifier stability and could go down to 330R with AD4938 (or maybe 499R with AD4932) which increases the current per channel to 2.4mA and 1.6mA with totals of 39 and 32mA respectively for all 16 channels. The max drive of AD8031 is only 15mA. The ASIC ...
... However, the 3K3 values need to be reduced for amplifier stability and could go down to 330R with AD4938 (or maybe 499R with AD4932) which increases the current per channel to 2.4mA and 1.6mA with totals of 39 and 32mA respectively for all 16 channels. The max drive of AD8031 is only 15mA. The ASIC ...
THESE DE DOCTORAT Monsieur Xusheng WANG
... High intensity focused ultrasound (HIFU) technology is now broadly used for cancer treatment, because of its non-invasiveproperty. In a HIFU system, a phased array of ultrasonic transducers is utilized to generate a focused beam of ultrasound (1M~10MHz) into a small area of the cancer target locatio ...
... High intensity focused ultrasound (HIFU) technology is now broadly used for cancer treatment, because of its non-invasiveproperty. In a HIFU system, a phased array of ultrasonic transducers is utilized to generate a focused beam of ultrasound (1M~10MHz) into a small area of the cancer target locatio ...
DLP5500 DLP 0.55 XGA Series 450 DMD (Rev. F)
... The following power supplies are required to operate the DMD: VCC, VCCI, VCC2. VSS must also be connected. DDR = Double Data Rate. SDR = Single Data Rate. Refer to the Timing Requirements for specifications and relationships. Refer to Electrical Characteristics for differential termination specifica ...
... The following power supplies are required to operate the DMD: VCC, VCCI, VCC2. VSS must also be connected. DDR = Double Data Rate. SDR = Single Data Rate. Refer to the Timing Requirements for specifications and relationships. Refer to Electrical Characteristics for differential termination specifica ...
RF2878 3V LOW NOISE AMPLIFIER/ 3V PA DRIVER AMPLIFIER Features
... Moving to another application, consider the schematic for 350MHz LNA. Noise figure in this case=1.75dB. In contrast to above linear driver, bias resistor is set at 1000 to limit current. In the specifications next to schematic, see that input return loss is somewhat degraded at 2.8dB. The absence o ...
... Moving to another application, consider the schematic for 350MHz LNA. Noise figure in this case=1.75dB. In contrast to above linear driver, bias resistor is set at 1000 to limit current. In the specifications next to schematic, see that input return loss is somewhat degraded at 2.8dB. The absence o ...
Analog Front End (AFE) for Sensing Temperature in Smart Grid
... A typical smart grid system consists of generators for power, step-up transformers for transmission, stepdown transformers for distribution, and loads consisting mainly of motors. The voltage and the power levels across the grid is very high, and any electrical faults on the system can lose a huge a ...
... A typical smart grid system consists of generators for power, step-up transformers for transmission, stepdown transformers for distribution, and loads consisting mainly of motors. The voltage and the power levels across the grid is very high, and any electrical faults on the system can lose a huge a ...
A Designer`s Guide to Instrumentation Amplifiers, 3rd Edition
... Charles Kitchin and Lew Counts ...
... Charles Kitchin and Lew Counts ...
Negative feedback
Negative feedback occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances.Whereas positive feedback tends to lead to instability via exponential growth, oscillation or chaotic behavior, negative feedback generally promotes stability. Negative feedback tends to promote a settling to equilibrium, and reduces the effects of perturbations. Negative feedback loops in which just the right amount of correction is applied with optimum timing can be very stable, accurate, and responsive.Negative feedback is widely used in mechanical and electronic engineering, but it also occurs naturally within living organisms, and can be seen in many other fields from chemistry and economics to physical systems such as the climate. General negative feedback systems are studied in control systems engineering.