Datasheet

© 2008 Microchip Technology Inc. DS21455D-page 13
TC7106/A/TC7107/A
FIGURE 6-2: TC7107A Block Diagram.
TC7107A
Thousands
Hundreds
Tens Units
µ
4
39
OSC2
V+
1
To Switch Drivers
from Comparator Output
Clock
7 Segment
Decode
40
38
OSC3
OSC1
Logic Control
Data Latch
C
REF
-
R
INT
V+
C
AZ
V
INT
28
29
27333634
10 mA
31
A/Z
INT
AZ & DE (±)
32
INT
26
Integrator
To
Digital
Section
DE (+)
DE
(–)
DE (+)
DE (–)
ANALOG
COMMON
C
REF
+
V
IN
+
V
IN
-
V
BUFF
C
INT
V
REF
+
V
REF
-
C
REF
+
35
+
–
LCD Segment Drivers
F
OSC
V-
+
–
Digital Ground
Low Tempco V
REF
Comparator
–
A/Z
V+ – 3.0V
1
R
OSC
C
OSC
7 Segment
Decode
7 Segment
Decode
Typical Segment Output
Internal Digital Ground
Segment
Output
V+
0.5 mA
8mA
Led Display
+
–
A/Z
30
Digital Ground
TEST
21
37
500
Ω