LTC4403-1/LTC4403-2 - Multiband RF Power Controllers for EDGE/TDMA.
... (slow loops) the power ramp sidebands. The LTC4403-X operates open loop until an RF voltage appears at the RF pin, at which time the loop closes and the output power follows the DAC profile. The RF power amplifier will require a certain control voltage level (threshold) before an RF output signal is ...
... (slow loops) the power ramp sidebands. The LTC4403-X operates open loop until an RF voltage appears at the RF pin, at which time the loop closes and the output power follows the DAC profile. The RF power amplifier will require a certain control voltage level (threshold) before an RF output signal is ...
Analog Signal Monitoring Option
... Gain and offset scaling factors are field programmable. These are the factors which the unit uses to translate the analog signal level into corresponding spoken physical units of measure. This programmability includes the unique ability to fine-tune the scaling factors based on the user’s on-the-spo ...
... Gain and offset scaling factors are field programmable. These are the factors which the unit uses to translate the analog signal level into corresponding spoken physical units of measure. This programmability includes the unique ability to fine-tune the scaling factors based on the user’s on-the-spo ...
AD830: High Speed, Video Difference Amplifier Data Sheet (Rev B, 01/2003)
... The topology, reduced to its elemental form, is shown in Figure 7. Nonideal effects, such as nonlinearity, bias currents, and limited full scale, are omitted from this model for simplicity, but are discussed later. The key feature of this topology is the use of two, identical voltage-to-current conv ...
... The topology, reduced to its elemental form, is shown in Figure 7. Nonideal effects, such as nonlinearity, bias currents, and limited full scale, are omitted from this model for simplicity, but are discussed later. The key feature of this topology is the use of two, identical voltage-to-current conv ...
Evaluates: MAX3802 MAX3802 Evaluation Kit General Description Features
... 2) Connect a 50Ω oscilloscope to SMA output connectors J5 (EOUT1-) and J6 (EOUT1+) to view the output of the cable equalizer. 3) The cable integrity monitor (CIM1) high-impedance output can be monitored at TP1. 4) The loss-of-signal (LOS1) TTL output can be monitored at TP5. Note: The MAX3802 equali ...
... 2) Connect a 50Ω oscilloscope to SMA output connectors J5 (EOUT1-) and J6 (EOUT1+) to view the output of the cable equalizer. 3) The cable integrity monitor (CIM1) high-impedance output can be monitored at TP1. 4) The loss-of-signal (LOS1) TTL output can be monitored at TP5. Note: The MAX3802 equali ...
Chapter 5_notes_Fall 2012
... The output stage is supposed to deliver the final output to an appropriate receiving device, i.e., a lamp, human ear, loud speaker, etc. Within the limits of given DC power supplies, the output stage should provide maximum amount of signal power to the load without large dissipation of electrical si ...
... The output stage is supposed to deliver the final output to an appropriate receiving device, i.e., a lamp, human ear, loud speaker, etc. Within the limits of given DC power supplies, the output stage should provide maximum amount of signal power to the load without large dissipation of electrical si ...
8_2control
... changing electrical voltage coming from sensors which may be responding to changing parameters such as light, sound, liquid levels in tanks, etc. The changing voltage levels are changed to digital numbers to be manipulated and stored in the computer. ( done by ADC) ...
... changing electrical voltage coming from sensors which may be responding to changing parameters such as light, sound, liquid levels in tanks, etc. The changing voltage levels are changed to digital numbers to be manipulated and stored in the computer. ( done by ADC) ...
changing magnetic field
... magnetic field changes within those loops. • The amount of resulting current depends on the induced voltage but also on the resistance of the coil and the nature of the circuit (a property called inductance, not covered in this course). • Many applications: e.g. Credit cards (see book for more), air ...
... magnetic field changes within those loops. • The amount of resulting current depends on the induced voltage but also on the resistance of the coil and the nature of the circuit (a property called inductance, not covered in this course). • Many applications: e.g. Credit cards (see book for more), air ...
Sembicon-106-BiDirectional Annunciator
... Power, memory and IO ports to interact with different connected devices. In this system microcontroller is used to read the analog values of different sensors and send to personal computer using RS232 communication protocol. 2. Sensors, ADC and signal conditioning circuit In this system we are using ...
... Power, memory and IO ports to interact with different connected devices. In this system microcontroller is used to read the analog values of different sensors and send to personal computer using RS232 communication protocol. 2. Sensors, ADC and signal conditioning circuit In this system we are using ...
Bus Edison High Speed Fuse Application
... In general for these applications fuses are only exposed to AC fault conditions and the fuse voltage rating is selected to be equal or greater than the supply line-to-line voltage. In the case of the three phase double Wye (star) arrangement with interphase transformer, the voltage rating of the fus ...
... In general for these applications fuses are only exposed to AC fault conditions and the fuse voltage rating is selected to be equal or greater than the supply line-to-line voltage. In the case of the three phase double Wye (star) arrangement with interphase transformer, the voltage rating of the fus ...
HSD Test & Measurement
... Testing tolerance to varying supply voltages, VEE, VTT Test to find out how sensitive your design is to voltage variations, to establish the supply voltage tolerances. ...
... Testing tolerance to varying supply voltages, VEE, VTT Test to find out how sensitive your design is to voltage variations, to establish the supply voltage tolerances. ...
Document
... current IL flows through the load and this is assumed to be constant. At the same time SCR short circuits the LC combination which starts oscillating. A current ‘i’ starts flowing in the direction shown in figure. As ‘i’ reaches its maximum value, the capacitor voltage reduces to zero and then the p ...
... current IL flows through the load and this is assumed to be constant. At the same time SCR short circuits the LC combination which starts oscillating. A current ‘i’ starts flowing in the direction shown in figure. As ‘i’ reaches its maximum value, the capacitor voltage reduces to zero and then the p ...
harmonic reduction for three phase voltage source inverters
... implement any level. It becomes difficult in high voltage & high power applications due to the increased switching losses and limited rating of the dc link voltage. Multilevel inverters are used in high voltage and high power applications with less harmonic contents. This paper proposes a theoretica ...
... implement any level. It becomes difficult in high voltage & high power applications due to the increased switching losses and limited rating of the dc link voltage. Multilevel inverters are used in high voltage and high power applications with less harmonic contents. This paper proposes a theoretica ...
LTC1758-1/LTC1758-2 - RF Power Controllers with 250kHz Control Loop Bandwidth and 40dB Dynamic Range.
... An autozero system is included to improve power programming accuracy over temperature. This section cancels internal offsets associated with the Schottky diode detector and control amplifier. External offsets associated with the DAC driving the PCTL pin are also cancelled. Offset drift due to temper ...
... An autozero system is included to improve power programming accuracy over temperature. This section cancels internal offsets associated with the Schottky diode detector and control amplifier. External offsets associated with the DAC driving the PCTL pin are also cancelled. Offset drift due to temper ...
TPS40090 数据资料 dataSheet 下载
... The TPS4009x uses fixed frequency, peak current mode control with forced phase current balancing. When compared to voltage mode control, current mode results in a simplified feedback network and reduced input line sensitivity. Phase current is sensed by using either current sense resistors installed ...
... The TPS4009x uses fixed frequency, peak current mode control with forced phase current balancing. When compared to voltage mode control, current mode results in a simplified feedback network and reduced input line sensitivity. Phase current is sensed by using either current sense resistors installed ...
Resistive opto-isolator
Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.