tc7109a Microchip Technology Inc., tc7109a Datasheet - Page 3

• Manufacturer Part Number: tc7109a
• Description: 12-bit ?-compatible Analog-to-digital Converters
• Manufacturer: Microchip Technology Inc.

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