775 Nanovolt Noise Measurement for a Low Noise Voltage Reference

with Jim Williams, Staff Scientist
http://video.linear.com/7?utm_source=6655voltreference&utm_medium=video&a...
Frequently, voltage reference stability and noise define measurement limits in instrumentation systems. In particular, reference noise often sets stable resolution limits. Reference voltages have decreased with the continuing drop in system power supply voltages, making reference noise increasingly important. The compressed signal processing range mandates a commensurate reduction in reference noise to maintain resolution. Noise ultimately translates into quantization uncertainty in A-to-D converters, introducing jitter in applications such as scales, inertial navigation systems, infrared thermography, DVMs and medical imaging apparatus.

Category:

Science & Technology

Tags:

• Noise
• Measurement
• Low
• Voltage
• Reference

[nick1f]

Isn't there a mistake in the presentation? If the gain of the filter is 100, shouldn't the 0 to 1uV translate into a 0 to 0.1V (not 1V)? Isn't the gain of the filter 1000 instead?

[LinearTechnology]

@nick1f - The preamplifier has a gain of 10,000. The filter then provides an addition gain of 100 for a total gain of 1,000,000. This translates 0 to 1uV to 1 to 1V.

[communicator9]

RIP

[nick1f]

Hi, thanks for explanation. I am very sorry, I made a silly mistake. Now it is all clear. I am very sad to hear about the death of Jim Williams. The world lost a great engineer.

[Nermash]

Rip Jim...

[sowhatdude1]

I can only write that I am BEYOND impressed with Jim's obvious & total in grasp electronic- really incredible to watch!

Thanks for the post~