analog to digital conversion

... implementation ANALOG- TO- DIGITAL CONVERSION 3.3.2 Integration The integration technique uses an integrator, a comparator, and a controller to convert analog signals to digital signals A sampled analog ... //************************************************************* //ReadADC: read analog voltage from analog- to- digital converter //the desired channel for conversion is passed in as an unsigned ANALOG- TO- DIGITAL CONVERSION //character variable ... analog signal for people to hear The process to convert digital signals to analog signals is completed by a DAC The most commonly used technique to convert digital signals to analog signals is the...

Ngày tải lên: 29/09/2013, 20:20

... applied to an analog- to- digital converter (A/D) circuit where the sampled analog signal is converted to a digitally coded signal The digital signal is then applied to c 1999 by CRC Press LLC the digital ... data conversion with such variations of process parameters 5.3 Digital -to -Analog Converter Architecture The digital -to -analog (D/A) converter, also known as a DAC, decodes a digital word into a ... c 1999 by CRC Press LLC 5.4 Analog- to- Digital Converter Architectures The analog- to- digital (A/D) converter, also known as an ADC, encodes an analog signal into a digital word Conventional converters...

Ngày tải lên: 27/01/2014, 03:20

... operate at temperatures near K Due to his novel approach to problem solving, he was awarded the University Analog- to- Digital Conversion Using IF Networks of Florida Tom Scott Memorial Award for Distinction ... ∆ modulator (see Figures and 3) [9, 10] The discrete time integrator, quantizer, and digitalto -analog converter (DAC) in Figure can be represented by the integrating amplifier, comparator, and ... photonic analog- to- digital conversion using spatial oversampling and spectral noise shaping,” Optical Engineering, vol 41, no 7, pp 1674–1687, 2002 [2] B L Shoop and P K Das, “Wideband photonic...

Ngày tải lên: 23/06/2014, 01:20

... MOTOROLA References-1 iii Illustrations Figure 2-1 Generalized Analog- to- Digital Conversion Process 2-2 Figure 2-2 Conventional Analog- to- Digital Conversion Process 2-3 Figure 2-3 Spectra of Analog ... 2-2 Conventional Analog- to- Digital Conversion Process Figure 2-2 illustrates the conventional A/D conversion process that transforms an analog input signal x(t) into a sequence of digital codes ... Motorola Digital Signal Processors Principles of Sigma-Delta Modulation for Analog- toDigital Converters by Sangil Park, Ph D Strategic Applications Digital Signal Processor Operation MOTOROLA...

Ngày tải lên: 04/07/2014, 07:24

... reference levels is the focus of this paper In order to obtain samples efficiently, the levels need to be appropriately assigned in the analog- to- digital converter (ADC) When they are not within the ... comparator associated with that level changes its output, then its corresponding digital trigger identifies the change and sends the information to the digital circuitry that controls the comparator’s ... Two methods of tracking input to implement DSA (a) All comparators are turned on once every μ seconds, and the approximated input xmμ is send to the digital circuit to evaluate DSA (b) A low-rate...

Ngày tải lên: 22/06/2014, 01:20

... Galton, “Parallel delta-sigma A/D conversion, ” in Proceedings of the Custom Integrated Circuits Conference, pp 503–506, 1994 [6] I Galton and H T Jensen, “Delta-sigma modulator based A/D conversion ... the digital modulation sequences, as in (36), is preferable from a noise perspective CONCLUSION In this paper, a new general formulation of analog- to- digital converters using parallel ΣΔ-modulators ... to the modulator, and are for this reason particularly attractive on the analog side A channel-specific gain γk is included in the sensitivity analysis, and analog imperfections in the modulator...

Ngày tải lên: 22/06/2014, 19:20

... functions: PICmicro Initialization A/D Conversion Conversion to ASCII Conversion to Decimal Conversion to Voltage (*C code only) Transmit ASCII, Decimal and Voltage to PC for display C CODE: Upon power ... literal into W linker to select SFR bank set PORTB data latches to set PORTD data latches to set PORTE data latches to move literal into W set PORTA data latches to move literal into W set PORTC ... indefinitely As the analog input signal is applied to the IN+ and INinputs, it is ratioed to the VREF input for conversion scaling Digital output code = VIN x F.S VREF Where: VIN = analog input voltage...

Ngày tải lên: 11/01/2016, 11:34

... possible, avoid any digital output next to analog inputs Avoid digital inputs that switch frequently (e.g., clocks) next to analog inputs If VREF is used, then ensure that no analog pin being sampled ... required to charge the on-chip holding capacitor to the same value as is on the analog input pin The sampling time depends on the magnitude of the holding capacitor and the source impedance of the analog ... Select A/D conversion clock (TAD): 2TOSC, 8TOSC, TOSC or TRC (internal RC clock) For the first three options, make sure that TAD ≥ 2.0 µs If deterministic conversion time is required, select TOSC time-base...

Ngày tải lên: 11/01/2016, 11:50

... correlated noise, i.e distortion created by the converter itself With delta-sigma analog- to- digital converters, there is a subset of this distortion referred to as idle tones These idle tones are a by-product ... DitherCH1(ON); Noise Reduction and Idle Tones All analog- to- digital converters create noise during the conversion process Some of this noise is quantization noise, due to the conversion process itself Some ... idle tones are signal dependent, their amplitude and frequency depend on the input signal Dithering Principles and MCP3901 Implementation By adding a noise like signal to the analog- to- digital conversion, ...

Ngày tải lên: 11/01/2016, 16:55

... The Sampling Theorem 39 Digital -to -Analog Conversion 44 Analog Filters for Data Conversion 48 Selecting the Antialias Filter 55 Multirate Data Conversion 58 Single Bit Data Conversion 60 Chapter ... The author, publisher, and distributors disclaim all liability and responsibility to any person or entity with respect to any loss or damage caused, or alleged to be caused, directly or indirectly, ... book to solve a specific problem Support by Analog Devices The Second Edition of this book includes two new chapters on Digital Signal Processors, microprocessors specifically designed to carry...

Ngày tải lên: 13/09/2012, 10:21

... example of a digital lowpass filter is shown in Figure 1.15 The output of the digital filter is next fed to a digital -to -analog converter (DAC) as shown in Figure 1.17 that also uses a lowpass analog ... manufacture of analog filters, we may have to tune each of them to correct for manufacturing tolerances, but there is no such need to test the accuracy of the wordlength in digital filters Data on digital ... signals stored on these storage devices to the analog system By using digital filters, we can realize many transfer functions that cannot be realized by analog filters For example, in addition to those...

Ngày tải lên: 13/09/2012, 10:21

... example of a digital lowpass filter is shown in Figure 1.15 The output of the digital filter is next fed to a digital -to -analog converter (DAC) as shown in Figure 1.17 that also uses a lowpass analog ... manufacture of analog filters, we may have to tune each of them to correct for manufacturing tolerances, but there is no such need to test the accuracy of the wordlength in digital filters Data on digital ... signals stored on these storage devices to the analog system By using digital filters, we can realize many transfer functions that cannot be realized by analog filters For example, in addition to those...

Ngày tải lên: 29/09/2013, 21:20

... Dashboard Factory Factory Exchange 2000 Server Exchange 2000 Server Digital Digital Dashboard Dashboard Factory Factory Digital Dashboard Store (Contains Web Parts) Digital Dashboard Store (Contains ... dashboard logic tier Digital Digital Dashboard Dashboard Factory Factory SQL Server 7.0 SQL Server 7.0 Digital Digital Dashboard Dashboard Factory Factory Digital Dashboard Store (Contains Web ... Protocol (HTTP) and WebDAV protocols 21 22 Module 1: Introduction to Digital Dashboards Introduction to the Digital Dashboard Storage Tier Slide Objective To present the digital dashboard storage...

Ngày tải lên: 19/10/2013, 02:15

... Call to action A CTA is a phrase written to motivate the reader to take action (sign up for our B2C Stands for Business to consumers When businesses sell products/services to consumers means to ... sent to someone who has not requested to receive it - EVIL! The first email spam dates back to 1978 Spam is defined as unsolicited commercial or bulk email, and today is said to account for 80 to ... when it comes to conversion As affiliates are paid for performance, they will be more than willing to advise on ways to improve conversion rates Affiliate marketing can be used to complement...

Ngày tải lên: 29/10/2013, 09:46

... is no remainder If necessary, use row four to check the work Position Value 128 64 32 16 1 0 1 1 128 64 = 207 Convert the following decimal values to binary values: a 123 _ b 202 ...

Ngày tải lên: 11/12/2013, 13:15

... is no remainder If necessary, use row four to check the work Position Value 128 64 32 16 1 0 1 1 128 64 = 207 Convert the following decimal values to binary values: a 123 _ b 202 ...

Ngày tải lên: 11/12/2013, 13:15

... 4 Convert the following binary values to decimals: a 1110 _ b 100110 _ c 11111111 _ d 11010011 ...

Ngày tải lên: 21/12/2013, 19:15

... Position Value 128 64 32 16 1 1 0 32 16 128 = 185 Convert the following binary values to decimals: a 1110 _ b 100110 _ c 11111111 _ d 11010011 ...

Ngày tải lên: 21/12/2013, 19:15