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Resource Sponsors
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| ADC Architectures III: Sigma-Delta ADC Basics | The sigma-delta (Ó-Ä) ADC is the converter of choice for modern voiceband, audio, and high-resolution precision industrial measurement applications. The highly digital architecture is ideally suited for modern fine-line CMOS processes, thereby allowing easy addition of digital functionality without significantly increasing the cost. Because of its widespread use, it is important to understand the fundamental principles behind this converter architecture. |
| Altium Info Center | Knowledge is Power!
Altium is dedicated to equipping designers and engineers to tackle not only the demands of today’s electronic design projects, but to meet these challenges into the future.
Our flagship product, Altium Designer, is the world’s first and only unified electronic development system that encompasses all aspects of electronic product design including Board level, FPGA and Embedded software development. |
| FPGA Floorplanning | Floorplanning is the process of identifying structures that should be placed close together, and allocating space for them in such a manner as to meet the sometimes conflicting goals of available space (cost of the chip), required performance, and the desire to have everything close to everything else. |
| Identify® RTL Debugger | This simple tutorial teaches you how to instrument and debug a small HDL
design. The design is a simple 4-bit counter with a clock and reset. Two
versions of the counter are provided: one in VHDL and one in Verilog.This tutorial simulates hardware debug data by applying
randomly generated data to all instrumented nodes. This data
does not reflect the actual operation of the design and only serves
to show the format of the debug data. |
| MT-005: Noise Power Ratio (NPR) – A 65-Year Old Telephone System Specification Finds New Life in Modern Wireless Applications | The concept of Noise Power Ratio (NPR) has been around since the early days of frequency division multiplexed (FDM) telephone systems. The NPR is simply a measure of the "quietness" of an unused channel in a multi-channel system when there is random activity on the others. Noise and intermodulation distortion products fall into the unused channel causing less than ideal performance. Originally used to check 4-kHz wide voice channels in FDM links, the same concept is useful today in characterizing multichannel wideband communication systems – but there are some important differences in the modern measurement techniques. |
| Taking the Mystery out of the Infamous Formula, "SNR=6.02N + 1.76dB," and Why You Should Care | You don't have to deal with ADCs or DACs for long before running across this often quoted formula for the theoretical signal-to-noise ratio (SNR) of a converter. Rather than blindly accepting it on face value, a fundamental knowledge of its origin is important, because the formula encompasses some subtleties which if not understood can lead to significant misinterpretation of both data sheet specifications and converter performance. |
| The Role of B2 Spice A/D v4 | Designing a power supply with 4 DC outputs:
Many reference designs can be found on the Internet. However, estimating total current draw or available voltage when configuring the regulators can be done very quickly using the operating point simulation in B2 Spice. |
| Verilogger Pro Animated Tutorial | Verilogger Pro from SynaptiCAD: Animated Tutorial Version 7.0 |
