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Content posted in July 2003
Temperature and amplifier gain
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7/29/2003   Post a comment
Our applications guru in Tucson almost pulled his hair out on this one: As his amplifier heated up, the sensor signal would seem to disappear from the output. Sounds like a chicken-egg debate: Is it temperature or the gain setting that's playing tricks? Pick up your scope probe and join Bill Klein for the latest installment of his series, "A call I took last week."
Convert single supply 13-bit ADC voltage input to bi-polar
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7/29/2003   Post a comment
Microchip Technology's famous applications guru, Bonnie Baker, offers an advisory for squeezing some extra LSBs out of a single-supply A/D converter. Use a resistor array in conjunction with the differential inputs. This design advisory, from the July Planet Analog magazine folio, shows how.
Will the real Intersil please stand up?
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7/17/2003   Post a comment
Intersil's proposed sale of its wireless LAN chip business gave Steve Ohr some pause. No doubt the company's a player in power management, but it has a history of touting its expertise in product lines it winds up selling off - even changing its name every few years. It kinda makes you wonder: Who are they gonna be next week?
Testing an A/D's power supply rejection ratio
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7/11/2003   Post a comment
Many of today's applications require precision sampling analog-to-digital converters with resolutions of 12 bits or more, since the high resolution lets users make accurate system measurements.
RF fading stirs simulation, test issues
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7/11/2003   Post a comment
RF signals passing through the air are distorted by atmospheric and environmental impairments, including multipath scattering and dispersion.
Controlled noise sources the key to RF test
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7/11/2003   Post a comment
Communications experts have long correlated symbol constellations-phase and amplitude shifts in the carrier signal-with bit error rate (BER).




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