LH0091 True RMS to DC Converter
LH0091 True RMS to DC Converter
September 1993
LH0091 True RMS to DC Converter
General Description
The LH0091 rms to d...
Description
LH0091 True RMS to DC Converter
September 1993
LH0091 True RMS to DC Converter
General Description
The LH0091 rms to dc converter generates a dc output equal to the rms value of any input per the transfer function EOUT(DC) e
Features
Y Y Y
0
1 T EIN2(t) dt T 0
Y Y Y
The device provides rms conversion to an accuracy of 0 1% of reading using the external trim procedure It is possible to trim for maximum accuracy (0 5 mV g 0 05% typ) for decade ranges i e 10 mV x 100 mV 0 7V x 7V etc
Y
Y
Low cost True rms conversion 0 5% of reading accuracy untrimmed 0 05% of reading accuracy with external trim Minimum component count Input voltage to g 15V peak for VS e g 15V Uncommitted amplifier for filtering gain or high crest factor configuration Military or commercial temperature range
Block and Connection Diagrams
Dual-In-Line Package
Dual-In-Line Package Order Number LH0091CD See Package D16D
TL H 5694 – 1
Simplified Schematic
TL H 5694 – 2
Note Dotted lines denote external connections
C1995 National Semiconductor Corporation
TL H 5694
RRD-B30M115 Printed in U S A
Absolute Maximum Ratings
If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Input Voltage Output Short Circuit Duration
g 22V g 15V peak
Operating Temperature Range LH0091C Storage Temperature Range LH0091C Lead Temp (Soldering 10 seconds)
TMIN
b 25 C
TMAX 85 C
b 25 C to a 85 C
260 C...
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