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