ICL8052A/ICL71C03, ICL8068A/ICL71C03
C
R
INT
INT
V
(+1.000V)
2
REF
BUFFER
INTEGRATOR
COMPARATOR
-
-
5
4
1µF
ZERO
CROSSING
DETECTOR
A1
+
A2
+
-
A3
+
C
REF
V
IN
1
6
C
STRAY
C
AZ
3
FIGURE 2A. PHASE I AUTO-ZERO
R
C
INT
INT
V
(+1.000V)
2
REF
BUFFER
INTEGRATOR
COMPARATOR
-
-
5
4
1µF
ZERO
CROSSING
DETECTOR
A1
+
A2
+
-
A3
+
C
REF
V
1
IN
6
C
STRAY
C
AZ
POLARITY
FF
3
FIGURE 2B. PHASE II INTEGRATE INPUT
R
C
INT
INT
V
(+1.000V)
2
REF
BUFFER
INTEGRATOR
COMPARATOR
-
-
5
4
1µF
ZERO
CROSSING
DETECTOR
A1
+
A2
+
-
A3
+
C
REF
V
1
IN
6
C
STRAY
C
AZ
POLARITY
FF
3
FIGURE 2C. PHASE III + DEINTEGRATE
R
C
INT
INT
V
(+1.000V)
2
REF
BUFFER
INTEGRATOR
COMPARATOR
-
-
5
4
1µF
ZERO
CROSSING
DETECTOR
A1
+
A2
+
-
A3
+
C
REF
V
1
IN
6
C
STRAY
C
AZ
POLARITY
FF
3
FIGURE 2D. PHASE III - DEINTEGRATE
FIGURE 2. ANALOG SECTION OF EITHER ICL8052A OR ICL8068A WITH ICL71C03
7
ETC [ ETC ]
