Datasheet

© 2008 Microchip Technology Inc. DS21455D-page 11
TC7106/A/TC7107/A
FIGURE 5-2: TC7106A Block Diagram.
TC7106A
Thousands
Hundreds
Tens Units
µ
4
39
OSC2
V+
TEST
1
To Switch Drivers
From Comparator Output
Clock
40
38
OSC3
OSC1
Control Logic
26
500
Ω
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
-
A/Z
C
REF
+
35
+ –
LCD Segment Drivers
µ 200
Backplane
F
OSC
V-
V
TH
= 1V
V-
+
–
Internal Digital Ground
Low
Tempco
V
REF
Comparator
–
A/Z
V+ – 3.0V
1
R
OSC
C
OSC
7 Segment
Decode
7 Segment
Decode
7 Segment
Decode
21
Typical Segment Output
Segment
Output
V+
0.5 mA
2mA
6.2V
LCD Display
+
–
37
A/Z
30
Internal Digital Ground