SSM2110_15 Datasheet, PDF (10/11 Pages) Analog Devices – TRUE RMS TO DC CONVERTER

- ANALOG DEVICES fAX-ON-DEMAND HOTLINE
Page 25
SSM-2110
V.
I~
l_n~
~ OfI'SET
Tl't1M
v-
10pF
10lln
.1511
1'
I ABSOLUTEVALUE PflEBlAS
2.
LOOMS VAl.
- 5-3 V"...
4QHO
INPIJT 17
~ V. II
.!!
V_ ¹⁴
I Loa,..
C 13
7 BASI
LOG SC: 12
. EIIIITT1:R
\I LOG OUT
~ ^{-l.OG IN 11}
.lOGIN 10
11-
1010G O~F
1-0 V..
.15V
-15V
*O.I~F
':"
OBSOLETE _; ^{FIGURE10: Offset Trimming}
WAVEFORM
Vp _*
/"'\'
"-/
SINE WAVE
- ^{Vp *}
RMS
Vp
Vi
Vp
AVERAGE OF
ABSOLUTE
VALUE
(AAV>
2. Vp
It
Vp
CREST
FACTOR
Vp
= RMs
./2=1.414
l
i
I
I
i
I^I
---
i
'
I
i
Vp *
SQUARE
A
WAVE
V
Vp
7i
Vp
7i
-/3 '" 1.732
j
--"
,
,^I
!
TRIANGLE WAVE
A
/'
2Vp1
RMS
A xRMS
--..-'
Typically varies from 1 to 6 de-
pending on the characteristic of
the noise. Theoretically, the
crest factor is unlimited.
GAUSSIAN NOISE
:
FIGURE11: RMS, Average of Absolute Value and Crest Factors for Different Waveforms
A