F_resv2rev 12024-07-10IEC 60195 (3.4) (1965)
resistor noise index
0112/2///61360_4#AAE621
maximum current-noise index in one frequency decade, relative to the applied dc voltage, of a fixed linear resistor
- Used by classes
- 1
- Code
AAE621- Data type
- LEVEL(MAX) OF REAL_MEASURE_TYPE
- Unit
- UAA409 UAA409
Version history5#
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Metadata#
- Remark
- The current-noise index 'microvolts per volt in a decade' expressed in dB is the term used to express the 'noisiness' of individual resistors. |The ideal rectangular pass band associated with the current-noise index is one frequency decade, geometrically centred at 1000 Hz (c/s). |The index is defined as follows: |Current-noise index = 20 log_10} (v_rms})/V_T} dB (in a frequency decade). |Where v_rms} is the number of microvolts of open circuit rms current-noise voltage in a frequency decade and V_T} is the number of dc volts applied to the resistor under test. |Since the current-noise power spectrum approximates to a 1/f frequency characteristic, the index provides an estimate of current-noise in any frequency decade.
- Source document
- IEC 60195 (3.4) (1965)
- Version
- 2
- Revision
- 1
- Status
- Standard
- Publisher
- IEC
- Published in
- IEC 61360-4
- Responsible committee
- IEC/SC 3D
- Change request
C00162- Dates
- Original: 1996-08-01
- Current version: 2024-07-10
- Current revision: 2024-07-10