from the Lab
Rarely Asked Questions
Notes From the Editor
Audio and Video Products
Clock and Timing
Interface and Isolation
Processors and DSP
RF and Microwave
Switches and Multiplexers
Feature Articles: Products, Applications, Technology, Design Ideas, Tutorials,
Basics of MEMS IMU/Gyroscope Alignment
Sensor misalignment is often a key consideration
performance motion control systems that use MEMS inertial
measurement units (IMUs) in their feedback loops. For the gyroscopes in
the IMU, sensor misalignment describes the angular difference between
each gyroscopeís axis of rotation and the system defined inertial
reference frame, also known as the global frame. Managing the impact
that misalignment has on sensor accuracy can require unique packaging,
special assembly processes, or even complex inertial testing in the
final configuration. This article defines and explores three basic
alignment concepts that are necessary for the designer to understand and
evaluate when architecting an IMU function for a system: error
estimation, understanding misalignment impact on key system behaviors,
and electronic alignment (after installation).
Multifunction: a Dilemma or Reality?
aerospace and defense system designers are being pushed to develop
advanced, highly configurable systems that combine a range of functions
and requirements, integrating functionality that would have historically
been implemented by separate standalone systems. Clearly this has the
benefit of reducing the number of subsystems that need to be supported
by any mission platform, reducing the overall size, weight, and power
(SWaP), but with the further need to support cognitive and real-time
configurability, the challenges can seem daunting. This article looks at
a new generation of high performance, wideband components that are
potentially providing a solution to this challenge, supporting the high
performance levels required for each system, but with a broad enough
operating range to meet the multifunction challenge.
Mystery Spur Explained: Donít Blame the DDC!
Can you explain the existence of a mystery spur
in my ADC's output spectrum?
Low-Power Synchronous Demodulator Design Considerations
This article looks at some design considerations
for sensor signal conditioning using synchronous demodulation in systems
with strict power and cost constraints. When carefully designed, analog
systems are hard to beat for simplicity, low cost, and low power
consumption. This architecture performs most of the signal processing in
the analog domain.
No Pain, High Gain: Building a Low-Noise Instrumentation Amplifier with
Building a voltage measurement system with nanovolt
sensitivity presents many design challenges. The best available op amps
can achieve less than 1 nV/√Hz noise at 1 kHz, but the nature of
low-frequency noise limits the achievable noise to about 50 nV p-p over
a 0.1 Hz to 10 Hz band. A well-behaved low-noise in-amp simplifies
system design and construction, and reduces residual errors due to
common-mode voltage, power-supply fluctuations, and temperature drift.
Why donít my amplifiers and converters work
correctly in the published circuit?
eBooks and Printable
Aerospace and Defense
Motor and Power Control
Process Control and Industrial Automation
Security and Surveillance
Analog Dialogue is the technical
magazine of Analog Devices. It discusses products, applications,
technology, and techniques for analog, digital and mixed-signal