ADS802 数据资料 dataSheet 下载
... error correction to ensure 12-bit resolution. The differential track-and-hold circuit is shown in Figure 1. The switches are controlled by an internal clock that has a non-overlapping 2phase signal, φ1 and φ2. At the sampling time, the input signal is sampled on the bottom plates of the input capaci ...
... error correction to ensure 12-bit resolution. The differential track-and-hold circuit is shown in Figure 1. The switches are controlled by an internal clock that has a non-overlapping 2phase signal, φ1 and φ2. At the sampling time, the input signal is sampled on the bottom plates of the input capaci ...
AD7675 数据手册DataSheet下载
... When SER/PAR is LOW, this output is used as the Bit 9 of the Parallel Port Data Output Bus. When SER/PAR is HIGH, this pin, part of the serial port, is used as a serial data clock input or output, dependent upon the logic state of the EXT/INT Pin. The active edge where the data SDOUT is updated depe ...
... When SER/PAR is LOW, this output is used as the Bit 9 of the Parallel Port Data Output Bus. When SER/PAR is HIGH, this pin, part of the serial port, is used as a serial data clock input or output, dependent upon the logic state of the EXT/INT Pin. The active edge where the data SDOUT is updated depe ...
Lecture Notes - Bandpass Circuits File
... Aplications of PLL PLL used for coherent detection of AM signals. • A synchronized carrier signal is generated by the PLL. • VCO locks with 90 phase difference so a -90 extra phase shift is needed. ...
... Aplications of PLL PLL used for coherent detection of AM signals. • A synchronized carrier signal is generated by the PLL. • VCO locks with 90 phase difference so a -90 extra phase shift is needed. ...
AD7940 数据手册DataSheet下载
... that can handle input frequencies in excess of 7 MHz. The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and the conversion is also initiated a ...
... that can handle input frequencies in excess of 7 MHz. The conversion process and data acquisition are controlled using CS and the serial clock, allowing the devices to interface with microprocessors or DSPs. The input signal is sampled on the falling edge of CS and the conversion is also initiated a ...
Digital Communications
... get a measure of how much louder one sound is than the other. So, how could you compare 0.2 Wm2 (the concert) with 10-12Wm2 (the quietest sound that can be heard)? If you subtracted the two intensities, you would obtain 0.199 999 999 999 Wm2, which is clearly too tedious to contemplate. If you divid ...
... get a measure of how much louder one sound is than the other. So, how could you compare 0.2 Wm2 (the concert) with 10-12Wm2 (the quietest sound that can be heard)? If you subtracted the two intensities, you would obtain 0.199 999 999 999 Wm2, which is clearly too tedious to contemplate. If you divid ...
ECE2006 LABORATORY 9
... standard tools of KVL, KCL and Ohm’s Law because the signals are described as sinusoidal functions of time. It is easier computationally to convert the sinusoids into Phasor form prior to applying circuit analysis techniques. To convert an AC sinusoid into its corresponding phasor, it is necessary o ...
... standard tools of KVL, KCL and Ohm’s Law because the signals are described as sinusoidal functions of time. It is easier computationally to convert the sinusoids into Phasor form prior to applying circuit analysis techniques. To convert an AC sinusoid into its corresponding phasor, it is necessary o ...
ADS801 数据资料 dataSheet 下载
... wideband track-and-hold, reference, and three-state outputs. It operates from a single +5V power supply and can be configured to accept either single-ended or differential input signals. ...
... wideband track-and-hold, reference, and three-state outputs. It operates from a single +5V power supply and can be configured to accept either single-ended or differential input signals. ...
Transistor Common Base Configuration Common Emitter
... The Bipolar Transistor basic construction consists of two PNjunctions producing three connecting terminals with each terminal being given a name to identify it from the other two. Three terminals of transistor are emitter(E), base(B) , and collector (C). E ...
... The Bipolar Transistor basic construction consists of two PNjunctions producing three connecting terminals with each terminal being given a name to identify it from the other two. Three terminals of transistor are emitter(E), base(B) , and collector (C). E ...
Ethernet-Based Portable Data Acquisition
... Calibration Every range on the DaqBook is calibrated from the factory using a digital calibration method. This method works by storing a correction factor for each range on the DaqBook at the time of calibration. Whenever a particular range is selected by the sequence, the appropriate calibration co ...
... Calibration Every range on the DaqBook is calibrated from the factory using a digital calibration method. This method works by storing a correction factor for each range on the DaqBook at the time of calibration. Whenever a particular range is selected by the sequence, the appropriate calibration co ...
ADM101E 数据手册DataSheet 下载
... charge pump draws current pulses from VCC, the VCC decoupling capacitor should also have low ESR. The VCC decoupling capacitor and V– reservoir capacitor should also have low ESR because they determine how effectively ESD pulses are clamped to VCC or V– by the on-chip clamp diodes. Tantalum or monol ...
... charge pump draws current pulses from VCC, the VCC decoupling capacitor should also have low ESR. The VCC decoupling capacitor and V– reservoir capacitor should also have low ESR because they determine how effectively ESD pulses are clamped to VCC or V– by the on-chip clamp diodes. Tantalum or monol ...
CMA800i User Manual
... section for digital to analog converting, its hardware is specially designed with DSD channel to process DSD signal in its original format ,strictly comply with standard SACD format. Same as CAS192D, CMA800i adopts Wolfson WM8741 DAC chipset with 4 levels of digital filters and power regulation. In ...
... section for digital to analog converting, its hardware is specially designed with DSD channel to process DSD signal in its original format ,strictly comply with standard SACD format. Same as CAS192D, CMA800i adopts Wolfson WM8741 DAC chipset with 4 levels of digital filters and power regulation. In ...
Comlinear CLC449 1.2GHz Ultra
... The DC to 1.2GHz bandwidth of the CLC449 is suitable for many IF and RF applications as a versatile op amp building block for replacement of AC coupled discrete designs. Operational amplifier functions such as active filters, gain blocks, differentiation, addition, subtraction and other signal condi ...
... The DC to 1.2GHz bandwidth of the CLC449 is suitable for many IF and RF applications as a versatile op amp building block for replacement of AC coupled discrete designs. Operational amplifier functions such as active filters, gain blocks, differentiation, addition, subtraction and other signal condi ...
module1 A Communications Model
... The spectrum of a signal is the range of frequencies that it contains. The absolute bandwidth of a signal is the width of the spectrum Most of the energy in the signal is contained in a relatively narrow band of frequencies known as the ...
... The spectrum of a signal is the range of frequencies that it contains. The absolute bandwidth of a signal is the width of the spectrum Most of the energy in the signal is contained in a relatively narrow band of frequencies known as the ...
Ultrasound System Considerations and their Impact
... Modulation (AM/PM) conversion, for example, duty cycle variation of the carrier due to overload. Note the strong similarity to communications systems, for example, in a constant envelope digital communications system like GSM all the information is in the phase, and AM/PM conversion (also known as p ...
... Modulation (AM/PM) conversion, for example, duty cycle variation of the carrier due to overload. Note the strong similarity to communications systems, for example, in a constant envelope digital communications system like GSM all the information is in the phase, and AM/PM conversion (also known as p ...
ADS5421 数据资料 dataSheet 下载
... The ADS5421 is a high-speed, high-performance, CMOS ADC build with a fully differential pipeline architecture. Each stage contains a low-resolution quantizer and digital error correction logic ensuring good differential linearity. The conversion process is initiated by a rising edge of the external ...
... The ADS5421 is a high-speed, high-performance, CMOS ADC build with a fully differential pipeline architecture. Each stage contains a low-resolution quantizer and digital error correction logic ensuring good differential linearity. The conversion process is initiated by a rising edge of the external ...
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).