LTC1968 Linear Integrated Systems, LTC1968 Datasheet - Page 26

• Manufacturer Part Number: LTC1968
• Description: RMS-to-DC Converter
• Manufacturer: Linear Integrated Systems

GND
LTC1968
SI PLIFIED SCHE ATIC
TYPICAL APPLICATIO S
26
IN1
IN2
EN
V
DIFFERENTIAL)
+
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W
AC INPUTS
(1V
PEAK
AC-Coupled RMS-to-DC Converter
5V Single Supply, Differential,
1µF
C
C
IN1
IN2
GND
LTC1968
OUT RTN
5V
V
+
TO BIAS CONTROL
V
EN
OUT
1968 TA02
W
C3
C4
2nd ORDER ∆Σ MODULATOR
C1
U
C
10µF
AVE
C2
+
–
DC OUTPUT
A1
C5
C6
∫
Y1
50Hz TO 400Hz
AC CURRENT
75A MAX
∫
C7
C8
Y2
Single Supply RMS Current Measurement
+
–
0.1µF
T1
A2
C10
C9
10Ω
10k
10k
IN1
IN2
GND
C11
C12
LTC1968
SHUTDOWN
OUT RTN
V
+
CLOSED
DURING
V
EN
OUT
T1: CR MAGNETICS CR8348-2500-N
www.crmagnetics.com
1968 TA03
C
10µF
50k
BLEED RESISTOR
FOR C
AVE
V
AVE
OUT
OUT RTN
OUTPUT
= 4mV
DC
1968 SS
/A
RMS
1968f
C
AVE