icl8068a Intersil Corporation, icl8068a Datasheet - Page 7

• Manufacturer Part Number: icl8068a
• Description: Precision 4 1/2 Digit, A/d Converter
• Manufacturer: Intersil Corporation

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