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ELF Noise Source 0-350Hz

Extremely Low Frequency (ELF) Noise source

This product is a compact White Noise Generator for testing circuit signal response.

It effectively produces all frequencies (0 - 350 Hz) at the same time with the same amplitude. Imposing white noise at the input of  a device under test (DUT) can quickly produce an overview of the frequency response over an entire frequency range.  Simply connect the DUT output to a spectrum analyser and watch. Using more averaging and longer acquisition times produces a more accurate output response across the frequency range of interest.

Tested prior to despatch.

It follows the design published in the January 2018 Power by Linear Journal of Power Management under the title 'Pocket-Size White Noise Generator for Quickly Testing Circuit Signal Response' by Aaron Schultz and Peter Haak - see https://www.analog.com/en/analog-dialogue/raqs/raq-issue-154.html#

A benefit of this design is that the noise signal is well characterised, being that of ‘Johnson Noise’ generated by a 10 MR resistor. The noise is in turn amplified by a low power zero drift integrated circuit amplifier.

It is powered by 2 x AAA batteries (not supplied). 

Output via SMA Coaxial connector, 50 ohm, Gold Plated Contacts.

Power supply: ±1.5V

Flatness: within 0.5dB up to approximately 350Hz.

Total VP-P (or VRMS) output level: ~1.5mVP-P.

Noise density: 10µV/SQRT(Hz).

Supply current 1.4µA.

 

Price: £ 30.00
Quantity:
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