TC7109/A
Typical Application
TC7109A
REF REF
CAP+ IN+
37
36
C REF
High Order
Byte Inputs
Low Order
Byte Inputs
TEST
17
REF
IN-
39
R
C
AZ
C
INT
REF
INT
CAP-
BUFF AZ
INT
32
38
30
31
Buffer
–
+
Integrator
–
+
3 4 5 6 7 8 9 10 11 12 13 14 15 16
18
19
20
LBEN
HBEN
CE/LOAD
AZ
ZI
Input 35
High
INT
DE
(–)
AZ
DE
(+)
AZ
DE (±)
ZI
AZ
ZI
DE
(+)
Comparator
Comp
Out
14 Latches
12-Bit Counter
Latch
Clock
Comp Out
AZ
INT
DE (±)
ZI
ZI
DE
(–)
AZ
Common
33
Input Low 34
INT
10mA
–
+
6.2V
To Analog
Section
Conversion
Control Logic
29
28
40
V+
2
Status
POL
OR
B
12
B
11
B
10
B
9
B
8
B
7
B
6
B
5
B
4
B
3
B
2
B
1
16 Three-State Outputs
Oscillator and
Clock Circuitry
Handshake
Logic
26
RUN/
HOLD
22 23
24
21
27
Send
25
1
GND
REF V-
OUT
OSC OSC OSC BUFF Mode
IN OUT SEL OSC
OUT
©
2006 Microchip Technology Inc.
DS21456C-page 3
MICROCHIP [ MICROCHIP TECHNOLOGY ]
