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ADM6710 数据手册DataSheet 下载
ADM6710 数据手册DataSheet 下载

... 3.0 V, 3.3 V and 5.0 V supply voltages. The ADM6710Q offers three adjustable thresholds for monitoring voltages down to 0.62 V. See the Ordering Guide section for a list and description of all available options. If a monitored power supply voltage falls below the minimum voltage threshold, a single ...
TPS62065x 3-MHz 2A step down converter in a 2x2 SON package
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... save mode and operates then in pulse frequency modulation (PFM) mode. During PWM operation the converter use a unique fast response voltage mode controller scheme with input voltage feed-forward to achieve good line and load regulation allowing the use of small ceramic input and output capacitors. A ...
TPS40200-HT 数据资料 dataSheet 下载
TPS40200-HT 数据资料 dataSheet 下载

... The TPS40200 is a nonsynchronous controller with a built-in 200-mA driver, designed to drive high-speed P-channel FETS up to 500 kHz. Its small size combined with complete functionality makes the part both versatile and easy to use. The controller uses a low-value current-sensing resistor in series ...
Rotary Shaft Encoder - Electro
Rotary Shaft Encoder - Electro

Data Sheet DB EN IB IL 24/48 DOR 2/W (-PAC)
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... capacitive, and inductive elements. Depending on the proportion of the element, switching these loads results in a larger or smaller load on the switch contact. In practice, loads are generally used with a large inductive element, such as contacts, solenoid valves, motors, etc. Due to the energy sto ...
Xilinx Design Hints and Issues
Xilinx Design Hints and Issues

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... λ~1520nm is coupled to the on-chip TX macro of Chip 1 using a vertical grating coupler. The coupler results in 7.5dB of loss in optical power. A PRBS generated data within this TX macro are fed into the modulator driver, which in turn modulates the ring resonator. The output of the TX macro includin ...
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Basic Physics of Semiconductors

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Voltage Quality in the context of EMC

... shown in Fig. 1. Radiated – classical – EMC has been on the agenda for many years, e.g. in the standardization organisation CISPR – The International Special Committee on Radio Interference – which was set up in year 1934 [10]. In later years, the concept of EMC has been applied also in relation to ...
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... DC motors are useful devices. They have significantly more torque than stepper motors. Even when geared down, they are much faster. The only real draw back with DC motors is you never really know just where they are. If you need to turn exactly 2.5 revolutions, then stop, back up a bit then turn for ...
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4-20 mA Loop Powered Isolators, Two Channel API DPI-2

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LT1963-3_3 , DigChip http://www.digchip.com

4.5V to 18V Input, 5A/5A Dual Synchronous
4.5V to 18V Input, 5A/5A Dual Synchronous

... Each buck converter in TPS65279V can also be I2C controlled for enabling/disabling output voltage, setting the pulse skipping mode and reading the power good status and die temperature warning. The switching frequency of the converters can be set from 200 kHz to 1.6 MHz with an external resistor. Tw ...
LT6109-1/LT6109-2 - High Side Current Sense Amplifier with Reference and Comparators
LT6109-1/LT6109-2 - High Side Current Sense Amplifier with Reference and Comparators

... current must be considered to achieve the specified performance. Note 6: Supply voltage and input common mode voltage are varied while amplifier input offset voltage is monitored. Note 7: Specified gain error does not include the effects of external resistors RIN and ROUT. Although gain error is onl ...
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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.
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