ICL7129 Intersil, ICL7129 Datasheet - Page 2

• Manufacturer Part Number: ICL7129
• Description: 41/2 Digit LCD/ Single-Chip A/D Converter
• Manufacturer: Intersil

Functional Block Diagram
Typical Application Schematic
OSC1
OSC2
OSC3
RANGE
L/H
+
-
9V
CONT
0.1 F
560pF
LOW BATTERY CONTINUITY
1.2k
SEQUENCE COUNTER/DECODER
150k
10k
UP/DOWN RESULTS COUNTER
LATCH, DECODE DISPLAY MULTIPLEXER
1.0 F
V+
ANALOG SECTION
+
SEGMENT DRIVES
ICL7129
CONTROL LOGIC
LOW BATTERY CONTINUITY
ICL7129
V-
3-32
-
V
DGND
IN
0.1 F
100k
+
20K
DP
OR
BACKPLANE
ICL8069
3
DRIVES
DP
UR
3
ANNUNCIATOR DRIVE
DP
2
6.8 F
270K
DP
1
V+
V+
5pF
10pF
120kHz
V
(MICA)
DISP
(MICA)