Calibrate scope jitter using a transmission line
loop: 09/20/2001 EDN - Design Ideas /
Digital-clock-period jitter is the variation in the
period of a clock cycle compared with a nominal
(average of many cycles) clock period. To accurately
measure period jitter using an oscilloscope, you
must subtract the oscilloscope jitter fro.
Circuit improves on temperature measurement:
05/02/2002 EDN - Design Ideas / When current
pulses with a stable IHIGH/ILOW ratio modulate a
semiconductor junction, the ensuing voltage
difference (for example, ?VBE for a bipolar
transistor) is a linear function of the absolute
(Kelvin) temperature, T. You can use this truism to
make accurate temperature measurements. Technical
literature has thoroughly covered the relationship
(references 1 to 4) and has numerou....
NCO technique helps ÁC produce clean analog signals:
04/15/99 EDN-Design Ideas / NCO technique helps C
produce clean analog signals. C generates musical
sounds. Continuity buzzer is frugal with power.
Stereo jack adds no-cost power/logic control. S/H
circuit minimizes aperture....
RF transmitter uses AMI encoding: 11/24/99
EDN-Design Ideas / Although alternate-mark-inversion
(AMI) encoding is well-suited for direct-conversion
FM transmission, designers often overlook the
technique. AMI, a three-phase, synchronous-encoding
technique, uses bipolar pulses to represent logic
ones and no signal to...
Sampling peak detector has shutdown feature:
05/16/2002 EDN - Design Ideas / You face a
serious problem in using a slow ADC with a fast peak
detector. The circuit in Figure 1 allows a slow ADC
to measure a fast, sampled signal peak. The 100-MHz
peak detector for ultrasonic-pulse sampling uses a
fast MAX4231 amplifier from Maxim (www.maxim-ic.com).
This amplifier has a shutdown feature that
facilitates power savings without losing the sampled