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Analog-to-Digital Conversion
Analog-to-Digital Conversion

New Topology Eliminates Magnetic Cores at 50kHz NOT 50MHz!
New Topology Eliminates Magnetic Cores at 50kHz NOT 50MHz!

... power and size with the single DC inductor of the buck converter. In fact, higher power is naturally leading to lower 25kHz switching frequency enabling a use of very high power GTO and/or IGBT devices at those frequencies. Additional Advantages with all GaN devices For low voltage applications, the ...
Ω RS-485 Transceivers with Integrated 100 /120
Ω RS-485 Transceivers with Integrated 100 /120

... allows interfacing to logic levels down to +1.8V. The MAX13450E/MAX13451E feature strong drivers specified to drive low-impedance lines found when a fully loaded bus, based on today’s 100I characteristic impedance cable, is doubly terminated. Both devices allow slew-rate limiting of the driver outpu ...
Vector Control Drive of Permanent Magnet Synchronous Motor Using Resolver Sensor
Vector Control Drive of Permanent Magnet Synchronous Motor Using Resolver Sensor

... DSP. The speed controlled system shown in Fig. 2 is implemented to verify the proposed resolver algorithm. The ISR/PWM frequency is 10 kHz. The frequency of sinusoidal excitation signal is 1 kHz. During experiment, the PMSM is driven at a constant speed of 600 rpm. The experimental results can be se ...
High-speed optical modulation based on carrier depletion in a
High-speed optical modulation based on carrier depletion in a

... 22], MOS capacitor [1, 2], and reverse biased pn junction [3, 23] have been proposed to achieve phase modulation in silicon. The forward biased p-i-n diode approach has been proven to provide high modulation efficiency (in turn compact device size [24]). However, due to the slow carrier generation a ...
IGBT or MOSFET: Choose Wisely
IGBT or MOSFET: Choose Wisely

... The MOSFET, however, is a device that is voltage- and not current-controlled. MOSFETs have a positive temperature coefficient, stopping thermal runaway. The on-state-resistance has no theoretical limit, hence on-state losses can be far lower. The MOSFET also has a body-drain diode, which is particul ...
Lab Manual
Lab Manual

... If the EA pin is strapped to VSS, then all program fetches are directed to external ROM. The ROM less parts (8031, 80C31, etc.) must have this pin externally strapped to VSS to enable them to execute from external Program Memory. The read strobe to external ROM, PSEN, is used for all external progr ...
APPLICATION NOTE - TDA9901 - DIGITAL PROGRAMMABLE GAIN AMPLIFIER
APPLICATION NOTE - TDA9901 - DIGITAL PROGRAMMABLE GAIN AMPLIFIER

... The TDA9901 incorporates an AGC function operational between a gain of 6 to 30dB thanks to five CMOS compatible digital control steps (from 3-bit GRAY code) which can operate in transparent mode (direct control of gain setting) or in latch mode (gain setting controlled by latch signal). The TDA9901 ...
Features Description Block Diagram Pin Diagram (Top Side View
Features Description Block Diagram Pin Diagram (Top Side View

... When Redriver doesn’t detect Host or HDD termination, there will be about 12us detect pulse width with 50us detect period at the output of ReDriver. Once the termination is detected, the detect period will change to about 40ms. Anyway when the signal is detected at the input of redriver, there will ...
NCL30051LEDGEVB 35-50 Volt, Up to 1.5 Amp, Offline Power Factor
NCL30051LEDGEVB 35-50 Volt, Up to 1.5 Amp, Offline Power Factor

... Since the output current and/or voltage is regulated by controlling the PFC bulk voltage, the value of the bulk voltage will be directly proportional to Vout via the turns ratio of the transformer. For example, if we have an LED string with a nominal forward voltage of 40 V, the bulk voltage will be ...
H CMOS Switches Offer High Performance in Low Power, Wideband Applications
H CMOS Switches Offer High Performance in Low Power, Wideband Applications

... insertion loss, high isolation between ports, low distortion and low current consumption are much sought after for high frequency applications such as phase shifters, switchable filters, transmitters and receivers for radar systems—ranging from large installations to anti-collision radar in cars—and ...
GS-12-1278
GS-12-1278

... TX output power measurement is based on internal monitor diode feedback. Represented as a 16-bit unsigned integer with the power defined as the full 16 bit value (0 – 65535) with LSB equal to 0.1 μW. Accuracy is better than +/-3 dB over a range of Pavgmin to Pavgmax. Copyright © 2015 FCI Deutschland ...
Precision, 20MHz, 0.9pA, Low-Noise, RRIO, CMOS Operational Amplifier with Shutdown OPA320, OPA320S
Precision, 20MHz, 0.9pA, Low-Noise, RRIO, CMOS Operational Amplifier with Shutdown OPA320, OPA320S

... discharge (ESD) protection circuits on all pins. In the case of input and output pins, this protection primarily consists of current-steering diodes connected between the input and power-supply pins. These ESD protection diodes also provide in-circuit input overdrive protection, provided that the cu ...
OPA699: Wideband, High Gain Voltage Limiting Amplifier (Rev. B)
OPA699: Wideband, High Gain Voltage Limiting Amplifier (Rev. B)

A 36 nW, 7 ppm/C on-Chip Clock Source Platform for Near
A 36 nW, 7 ppm/C on-Chip Clock Source Platform for Near

DAC2902 数据资料 dataSheet 下载
DAC2902 数据资料 dataSheet 下载

... The architecture of the DAC2902 uses the current steering technique to enable fast switching and a high update rate. The core element within the monolithic DAC is an array of segmented current sources that are designed to deliver a fullscale output current of up to 20mA, as shown in Figure 1. An int ...
LOW NOISE DC POWER SUPPLIES Vaclav Papez Stanislava Papezova
LOW NOISE DC POWER SUPPLIES Vaclav Papez Stanislava Papezova

... and filter, is disadvantage of the arrangement, which do not take the own noise into measured signal and do not evoke his nonlinear distortion. Local oscillator has to be frequency stable. It must embody minimal level of phase noise and supply enough high power for the linear mixer. There was used a ...
ADM3307E 数据手册DataSheet 下载
ADM3307E 数据手册DataSheet 下载

... fully meet the EIA-232 standard while operating with a single 2.7 V to 3.6 V power supply. The devices feature an on-board charge pump dc-to-dc converter, eliminating the need for dual power supplies. This dc-to-dc converter contains a voltage tripler and a voltage inverter that internally generates ...
MAX2411A Low-Cost RF Up/Downconverter with LNA and PA Driver ________________General Description
MAX2411A Low-Cost RF Up/Downconverter with LNA and PA Driver ________________General Description

... receive function in time-division-duplex (TDD) communication systems. It operates over a wide frequency range and is optimized for RF frequencies around 1.9GHz. Applications include most popular cordless and PCS standards. The MAX2411A includes a low-noise amplifier (LNA), a downconverter mixer, a l ...
P83160
P83160

... 2. The MT4-115-WH can be surface mounted to a standard 4 inch square by 2-1/8 inch deep electrical box (Figure A), weather resistant backbox (WBB) (Figure B) or a 4 inch square by 1-1/2 inch extension ring and a 4 inch square by 2-1/8 inch deep electrical box (Figure C). 3. Select largest backbox sh ...
MAX2160/MAX2160EBG ISDB-T Single-Segment Low-IF Tuners General Description Features
MAX2160/MAX2160EBG ISDB-T Single-Segment Low-IF Tuners General Description Features

... amplifiers, I and Q downconverting mixers, low-IF variablegain amplifiers, and bandpass filters providing in excess of 42dB of image rejection. The parts are capable of operating with either high-side or low-side local oscillator (LO) injection. The MAX2160/EBG’s variable-gain amplifiers provide in ...
MAX2900–MAX2904 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands General Description
MAX2900–MAX2904 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands General Description

... o Small 28-Pin QFN Package with Exposed Pad (5mm  5mm) ...
an investigation of the boost inductor volume applied to pfc converters
an investigation of the boost inductor volume applied to pfc converters

Lehle Julian
Lehle Julian

Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in µMAX Package
Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in µMAX Package

... terminated cables, allowing error-free data transmission up to 250kbps. The MAX1484/MAX1486 driver slew rates are not limited, allowing them to transmit up to 12Mbps. The MAX1481/MAX1484/MAX1485/MAX1486 draw only 300µA of supply current. The MAX1481 has a low-power shutdown mode that reduces supply ...
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Heterodyne



Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.
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