555 Timer.ppt - 123SeminarsOnly.com
... square wave generator can be used as a frequency divider, if the timing interval is adjusted to be longer than the period of the triggering square wave input signal. The monostable multivibrator will be triggered by the first negative going edge of the square wave input but the output will ...
... square wave generator can be used as a frequency divider, if the timing interval is adjusted to be longer than the period of the triggering square wave input signal. The monostable multivibrator will be triggered by the first negative going edge of the square wave input but the output will ...
Development of an Electrolarynx Capable of Supporting Tonal Distinctions in...
... converted them to digital signals for further processing. • Microcontroller In order to process the lookup tables based on the frequency profiles of each of the Mandarin tone, a real-time controller is required so that when the user chooses a tone, it can be picked from the controller memory and con ...
... converted them to digital signals for further processing. • Microcontroller In order to process the lookup tables based on the frequency profiles of each of the Mandarin tone, a real-time controller is required so that when the user chooses a tone, it can be picked from the controller memory and con ...
A Wide-Bandwidth Si/SiGe HBT Direct Conversion Sub-Harmonic Mixer/Downconverter , Student Member, IEEE
... of digital cellular, GPS, and WLAN applications are required in a single portable device. However, their application has been limited by the menagerie of dynamic range limitations associated with the conversion of an RF signal directly to noise, baseband. In particular, second-order distortion, and ...
... of digital cellular, GPS, and WLAN applications are required in a single portable device. However, their application has been limited by the menagerie of dynamic range limitations associated with the conversion of an RF signal directly to noise, baseband. In particular, second-order distortion, and ...
MAX9159 Dual LVDS Line Receiver General Description Features
... LVDS is intended for point-to-point communication over a controlled-impedance medium as defined by the ANSI TIA/EIA-644 and IEEE 1596.3 standards. LVDS uses a lower voltage swing than other common communication standards, achieving higher data rates with reduced power consumption, while reducing EMI ...
... LVDS is intended for point-to-point communication over a controlled-impedance medium as defined by the ANSI TIA/EIA-644 and IEEE 1596.3 standards. LVDS uses a lower voltage swing than other common communication standards, achieving higher data rates with reduced power consumption, while reducing EMI ...
JOURNAL HEWLETT- PACKARD
... sistance-wise, the grid resistor can be con nected so that its value will be increased by the same feedback factor, making obtainable an input impedance as high as 100 megohms. At first, this arrangement seems an almost ideal solution to the problem, but examina tion of the circuit discloses major s ...
... sistance-wise, the grid resistor can be con nected so that its value will be increased by the same feedback factor, making obtainable an input impedance as high as 100 megohms. At first, this arrangement seems an almost ideal solution to the problem, but examina tion of the circuit discloses major s ...
AD8223 数据手册DataSheet 下载
... supply (±2 V to ±12 V). Low power consumption (1.5 mW at 3 V), wide supply voltage range, and rail-to-rail output swing make the AD8223 ideal for battery-powered applications. The rail-to-rail output stage maximizes the dynamic range when operating from low supply voltages. The AD8223 replaces discr ...
... supply (±2 V to ±12 V). Low power consumption (1.5 mW at 3 V), wide supply voltage range, and rail-to-rail output swing make the AD8223 ideal for battery-powered applications. The rail-to-rail output stage maximizes the dynamic range when operating from low supply voltages. The AD8223 replaces discr ...
LABORATORY EXPERIMENT
... noise you’ll need to overcome. With the circuit stationary and exposed to normal ambient light, note by how much does the output vary (in percent). ...
... noise you’ll need to overcome. With the circuit stationary and exposed to normal ambient light, note by how much does the output vary (in percent). ...
Intel Pentium 4 Processor - Federal University of Rio de
... Conduction Region –For any transistor to conduct, two things must occur. The emitter - base PN junction must be forward biased. The base - collector PN junction must be reverse biased. In this region the transistor presents an amplification in current (gain) or “ß”, which relates collector cur ...
... Conduction Region –For any transistor to conduct, two things must occur. The emitter - base PN junction must be forward biased. The base - collector PN junction must be reverse biased. In this region the transistor presents an amplification in current (gain) or “ß”, which relates collector cur ...
HMC842LC4B 数据资料DataSheet下载
... GHz. During normal operation, input data (or clock) is transferred to both output channels. Differential input and output signals of the HMC842LC4B are terminated with 50 Ohms to ground on-chip, and may be either AC or DC coupled. The Outputs can be connected directly to a 50 Ohms-to-ground terminat ...
... GHz. During normal operation, input data (or clock) is transferred to both output channels. Differential input and output signals of the HMC842LC4B are terminated with 50 Ohms to ground on-chip, and may be either AC or DC coupled. The Outputs can be connected directly to a 50 Ohms-to-ground terminat ...
a Quad 3000 V/ Current Feedback Amplifier AD8004
... 30 MHz while offering differential gain and phase error of 0.04% and 0.10∞. This makes the AD8004 suitable for video electronics such as cameras and video switchers. The AD8004 offers low power of 3.5 mA/amplifier and can run on a single +4 V to +12 V power supply, while being capable of delivering ...
... 30 MHz while offering differential gain and phase error of 0.04% and 0.10∞. This makes the AD8004 suitable for video electronics such as cameras and video switchers. The AD8004 offers low power of 3.5 mA/amplifier and can run on a single +4 V to +12 V power supply, while being capable of delivering ...
O A RIGINAL
... needs to be approved. There are several processes involved in this project starting with a theory and system design, installation of the system, testing of the system and the packaging of the system. In addition, there are several important parts in prototype production; the portable unit and the pa ...
... needs to be approved. There are several processes involved in this project starting with a theory and system design, installation of the system, testing of the system and the packaging of the system. In addition, there are several important parts in prototype production; the portable unit and the pa ...
SiPM_Signal_Shaping_Oct28_2009
... 1ns for large signals – The ohmic series resistance of MAPD is about 6 ohm – As soon as dynamic resistance of the diode sections increases above that value the discharge is being dominated by the logarithmic behavior – It should be relatively safe to speculate that that logarithmic discharge takes o ...
... 1ns for large signals – The ohmic series resistance of MAPD is about 6 ohm – As soon as dynamic resistance of the diode sections increases above that value the discharge is being dominated by the logarithmic behavior – It should be relatively safe to speculate that that logarithmic discharge takes o ...
ADS5120 数据资料 dataSheet 下载
... digital I/O supply (DRVDD) can be set to either +1.8V or +3.3V. The ADC core of each channel consists of 10 pipeline stages. Each of the 10 stages produces one digital bit per stage. Both the rising and the falling clock edges are utilized to propagate the sample through the pipeline every half cloc ...
... digital I/O supply (DRVDD) can be set to either +1.8V or +3.3V. The ADC core of each channel consists of 10 pipeline stages. Each of the 10 stages produces one digital bit per stage. Both the rising and the falling clock edges are utilized to propagate the sample through the pipeline every half cloc ...
Analog-to-digital converter
An analog-to-digital converter (ADC, A/D, or A to D) is a device that converts a continuous physical quantity (usually voltage) to a digital number that represents the quantity's amplitude.The conversion involves quantization of the input, so it necessarily introduces a small amount of error. Furthermore, instead of continuously performing the conversion, an ADC does the conversion periodically, sampling the input. The result is a sequence of digital values that have been converted from a continuous-time and continuous-amplitude analog signal to a discrete-time and discrete-amplitude digital signal.An ADC is defined by its bandwidth (the range of frequencies it can measure) and its signal to noise ratio (how accurately it can measure a signal relative to the noise it introduces). The actual bandwidth of an ADC is characterized primarily by its sampling rate, and to a lesser extent by how it handles errors such as aliasing. The dynamic range of an ADC is influenced by many factors, including the resolution (the number of output levels it can quantize a signal to), linearity and accuracy (how well the quantization levels match the true analog signal) and jitter (small timing errors that introduce additional noise). The dynamic range of an ADC is often summarized in terms of its effective number of bits (ENOB), the number of bits of each measure it returns that are on average not noise. An ideal ADC has an ENOB equal to its resolution. ADCs are chosen to match the bandwidth and required signal to noise ratio of the signal to be quantized. If an ADC operates at a sampling rate greater than twice the bandwidth of the signal, then perfect reconstruction is possible given an ideal ADC and neglecting quantization error. The presence of quantization error limits the dynamic range of even an ideal ADC, however, if the dynamic range of the ADC exceeds that of the input signal, its effects may be neglected resulting in an essentially perfect digital representation of the input signal.An ADC may also provide an isolated measurement such as an electronic device that converts an input analog voltage or current to a digital number proportional to the magnitude of the voltage or current. However, some non-electronic or only partially electronic devices, such as rotary encoders, can also be considered ADCs. The digital output may use different coding schemes. Typically the digital output will be a two's complement binary number that is proportional to the input, but there are other possibilities. An encoder, for example, might output a Gray code.The inverse operation is performed by a digital-to-analog converter (DAC).