Sampling, Quantization and Encoding
... use of a low-pass filter, step nonlinearity (the actual 1-bit DAC), and negative feedback loop, in a technique called delta-sigma modulation. This results in an effective high-pass filter acting on the quantization (signal processing) noise, thus steering this noise out of the low frequencies of int ...
... use of a low-pass filter, step nonlinearity (the actual 1-bit DAC), and negative feedback loop, in a technique called delta-sigma modulation. This results in an effective high-pass filter acting on the quantization (signal processing) noise, thus steering this noise out of the low frequencies of int ...
RFVC1843 数据资料DataSheet下载
... RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. RFMD Green: RoHS compliant per EU Directive 2002/95/EC, halogen free per IEC 61249-2-21, < 1000ppm each of antimony trioxide in polymeric materials and ...
... RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. RFMD Green: RoHS compliant per EU Directive 2002/95/EC, halogen free per IEC 61249-2-21, < 1000ppm each of antimony trioxide in polymeric materials and ...
AN2048
... Characterization results As we can see from Figure 9, 10 and 11, we can achieve a minimum gain of 12 dB with an input return loss better than 5 dB and a drain efficiency between 55% and 65% over the frequency band 445 ÷ 475 MHz. Even so the output power can be controlled through Vgs, a minimum of 15 ...
... Characterization results As we can see from Figure 9, 10 and 11, we can achieve a minimum gain of 12 dB with an input return loss better than 5 dB and a drain efficiency between 55% and 65% over the frequency band 445 ÷ 475 MHz. Even so the output power can be controlled through Vgs, a minimum of 15 ...
1 Second Release - January 29,2010 Element 2 Technician Class
... T6A07: Changed distractor A: Switch T6A08: Changed Distractor A: Zener diode T6D08: Changed first word of question: What Which of the following is used…. T6D11: Changed first word of question: What Which of the following is used…. T7B04: Inserted a word in the question: What is the most likely cause ...
... T6A07: Changed distractor A: Switch T6A08: Changed Distractor A: Zener diode T6D08: Changed first word of question: What Which of the following is used…. T6D11: Changed first word of question: What Which of the following is used…. T7B04: Inserted a word in the question: What is the most likely cause ...
GPS Applications Using SL1206 and SL1204 Active Antennas
... incorporated into the device and hence need an electrical power source for their operation. There are two ways to provide the necessary electrical power for the LNA. One way is to directly connect the active antenna to an existing DC source in the final device via a choke inductor. This configuratio ...
... incorporated into the device and hence need an electrical power source for their operation. There are two ways to provide the necessary electrical power for the LNA. One way is to directly connect the active antenna to an existing DC source in the final device via a choke inductor. This configuratio ...
Time transfer through optical fibers over a distance of 73 km with an
... often the term “time transfer” is used although a calibration of propagation delays is left undone so that the results demonstrate the precision and in some cases the reproducibility of the employed systems, but not necessarily the accuracy to compare epochs of the two (or more) clocks involved. In ...
... often the term “time transfer” is used although a calibration of propagation delays is left undone so that the results demonstrate the precision and in some cases the reproducibility of the employed systems, but not necessarily the accuracy to compare epochs of the two (or more) clocks involved. In ...
LTC1069-1 - Low Power, 8th Order Progressive Elliptic, Lowpass Filter
... V+, V– (Pins 2, 7): Power Supply Pins. The V+ (Pin 2) and the V– (Pin 7) should be bypassed with a 0.1μF capacitor to an adequate analog ground. The filter’s power supplies should be isolated from other digital or high voltage analog supplies. A low noise linear supply is recommended. Using switching ...
... V+, V– (Pins 2, 7): Power Supply Pins. The V+ (Pin 2) and the V– (Pin 7) should be bypassed with a 0.1μF capacitor to an adequate analog ground. The filter’s power supplies should be isolated from other digital or high voltage analog supplies. A low noise linear supply is recommended. Using switching ...
Printed Circuit Board Layout Narrative plus Preliminary PCB Layout
... A final concern is EMI reduction. The project contains a number of noise sources that must be dealt with. The main sources are the 1800 RPM (30Hz) AC motor and slip rings, the 1.2 GHz RF circuit, the 550 KHz switching regulator, and the 8 MHz SPI on the PIC microcontroller. The signals received by t ...
... A final concern is EMI reduction. The project contains a number of noise sources that must be dealt with. The main sources are the 1800 RPM (30Hz) AC motor and slip rings, the 1.2 GHz RF circuit, the 550 KHz switching regulator, and the 8 MHz SPI on the PIC microcontroller. The signals received by t ...
Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage
... stages of the A/D converter cannot provide the required system LSB size, other methods, like the input gain stage using the INA128 can be used. For example, an optimum configuration for the ADS1212 with a data rate of 10Hz, would be a Turbo (oversampling rate) setting of 4 and PGA ...
... stages of the A/D converter cannot provide the required system LSB size, other methods, like the input gain stage using the INA128 can be used. For example, an optimum configuration for the ADS1212 with a data rate of 10Hz, would be a Turbo (oversampling rate) setting of 4 and PGA ...
closer
... Southwest Research Institute project h as shown, however, that even greater accuracy is possible through the use of nonlinear filters. Nonlinear filter technology, recently developed at SwRI for improved telescope pointing, helps resolve problems associated w ith power sensitivity and aligrunent err ...
... Southwest Research Institute project h as shown, however, that even greater accuracy is possible through the use of nonlinear filters. Nonlinear filter technology, recently developed at SwRI for improved telescope pointing, helps resolve problems associated w ith power sensitivity and aligrunent err ...
RFVC1831 数据资料DataSheet下载
... RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. RFMD Green: RoHS compliant per EU Directive 2002/95/EC, halogen free per IEC 61249-2-21, < 1000ppm each of antimony trioxide in polymeric materials and ...
... RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. RFMD Green: RoHS compliant per EU Directive 2002/95/EC, halogen free per IEC 61249-2-21, < 1000ppm each of antimony trioxide in polymeric materials and ...
Design of 24-GHz 0.8-V 1.51-mW Coupling Current
... the loop phase shift. As a departure from previous work [7], the incident signals are injected into both the CMILFD stage and the coupling circuit stages. As a result, the locking range can be enhanced with low power consumption. In the second divider, in order to solve the problems of the conventio ...
... the loop phase shift. As a departure from previous work [7], the incident signals are injected into both the CMILFD stage and the coupling circuit stages. As a result, the locking range can be enhanced with low power consumption. In the second divider, in order to solve the problems of the conventio ...
Notes on ASK, FSK and PSK
... Figure 2-4a shows in the time domain the binary input to an FSK modulator and the corresponding FSK output. When the binary input (fb) changes from a logic 1 to a logic 0 and vice versa, the FSK output frequency shifts from a mark ( fm) to a space (f s) frequency and vice versa. In Figure 2-4a, the ...
... Figure 2-4a shows in the time domain the binary input to an FSK modulator and the corresponding FSK output. When the binary input (fb) changes from a logic 1 to a logic 0 and vice versa, the FSK output frequency shifts from a mark ( fm) to a space (f s) frequency and vice versa. In Figure 2-4a, the ...
ADF7902
... Companion receiver to ADF7901 transmitter Frequency range: 369.5 MHz to 395.9 MHz Eight RF channels selectable with three digital inputs Modulation parameters supported FSK demodulation 2 kbps data rate 34.8 kHz frequency deviation 5.0 V supply voltage Low power consumption 18.5 mA with receiver ena ...
... Companion receiver to ADF7901 transmitter Frequency range: 369.5 MHz to 395.9 MHz Eight RF channels selectable with three digital inputs Modulation parameters supported FSK demodulation 2 kbps data rate 34.8 kHz frequency deviation 5.0 V supply voltage Low power consumption 18.5 mA with receiver ena ...
Controlling DC and Servo Motors
... The brushes are fixed however as the rotor rotates Commutator - which is attached to the rotor Acts like a switch connecting the voltage source First one way then the opposite way across the electromagnetic Thereby changing its polarization When power is applied DC motor has the ability to continuo ...
... The brushes are fixed however as the rotor rotates Commutator - which is attached to the rotor Acts like a switch connecting the voltage source First one way then the opposite way across the electromagnetic Thereby changing its polarization When power is applied DC motor has the ability to continuo ...
TPS40002/3 Controllers Enable BUCK
... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
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MAX9715 2.8W, Low-EMI, Stereo, Filterless Class D Audio Amplifier General Description
... Capacitors with high-voltage coefficients, such as ceramics, may result in increased distortion at low frequencies. The inability of small diaphragm speakers to reproduce low frequencies can be exploited to improve click-andpop performance. Set the cutoff frequency of the MAX9715’s input highpass fi ...
... Capacitors with high-voltage coefficients, such as ceramics, may result in increased distortion at low frequencies. The inability of small diaphragm speakers to reproduce low frequencies can be exploited to improve click-andpop performance. Set the cutoff frequency of the MAX9715’s input highpass fi ...
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.