-13-
Figure 7-2
7106 IC Functions
Figure 7-3
a
b
a
b
c
d
e
f
g
TYPICAL SEGMENT OUTPUT
0.5mA
2mA
V+
Segment
Output
Internal Digital Ground
LCD PHASE DRIVER
LATCH
7 Segment
Decode
7 Segment
Decode
7 Segment
Decode
Thousand
Hundreds
Tens
Units
*
CLOCK
To Switch Drivers
From Comparator Output
-4
LOGIC CONTROL
Internal Digital Ground
200
BACKPLANE
21
V+
TEST
V
500
Ω
37
26
6.2V
1V
* Three inverters.
One inverter shown for clarity.
40
39
38
OSC 1
OSC 2
OSC 3
DIGITAL SECTION
ANALOG SECTION of 7106
C
REF
R
INT
C
AZ
C
INT
INT
C
REF
+
REF HI
REF LO C
REF
BUFFER
V+
27
34
36
35
33
28
29
1
AUTO
ZERO
+
A-Z &
Z1
A-Z &
Z1
A-Z
DE (+)
DE (+)
DE (-)
DE (-)
IN HI
COMMON
IN LO
32
31
INT
10
µ
A
V+
30
INT
+
+
+
2.8V
A-Z & DE(+)
& Z1
26
V
Z1
6.2V
A-Z
COMPARATOR
ZERO
CROSSING
DETECTOR
POLARITY
FLIP/FLOP
TO
DIGITAL
SECTION
INTEGRATOR
