TC7109 TelCom, TC7109 Datasheet - Page 6

• Manufacturer Part Number: TC7109
• Description: 12-BIT UP-COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS
• Manufacturer: TelCom

TC7109/A PIN DESCRIPTION (Cont.)
40-Pin PDIP
Pin Number
NOTE: All digital levels are positive true.
3-96
TC7109
TC7109A
OUTPUT
SERIAL
SERIAL
GND
GND
INPUT
+5V
+5V
5–12
27
28
29
30
31
32
33
34
35
36
37
38
39
40
13
14
15
16
20
25
1
2
3
4
V
OSC CONTROL
GND
RRD
RBR1–8
PE
FE
OE
SFD
RR1
TRO
CMOS UART
6403
*
INTEGRATOR
NOTE:
Figure 1.
AUTO-ZERO
INPUT HIGH
INPUT LOW
REF CAP +
COMMON
REF CAP –
Symbol
REF OUT
REF IN –
BUFFER
REF IN +
*TBR1–8
SEND
OSC IN
V
V
TBRE
TBRL
CLS1
CLS2
For lowest power consumption, TBR1–TBR8 inputs
should have 100k
DRR
+
TRC
SBS
CRL
–
EPE
TRE
MR
DR
PI
TC7109A UART Interface (Send Any Word to UART to Transmit Latest Result)
40
17
39
38
37
36
35
34
26–33
24
18
19
23
22
21
15
GND
+5V
GND
Q11
RESET
+5V
11
CD4040B
pull-up resistors to +5V.
Description
Input — Used in handshake mode to indicate ability of an external device to
accept data.
Connect to V+ if not used.
Analog Negative Supply — Nominally –5V with respect to GND (Pin 1).
Reference Voltage Output — Nominally 2.8V down from V
Buffer Amplifier Output
Auto-Zero Node — Inside foil of C
Integrator Output — Outside foil of C
Analog Common — System is auto-zeroed to COMMON.
Differential Input Low Side
Differential Input High Side
Differential Reference Input Positive
Reference Capacitor Positive
Reference Capacitor Negative
Differential Reference Input Negative
Positive Supply Voltage — Nominally +5V with respect to GND (Pin 1).
8
CLK
10
6
8
GND
9–16
3–8
25
19
17
18
21
20
27
1
2
ANALOG-TO-DIGITAL CONVERTERS
GND
BUFF OSC OUT
STATUS
HBEN
B9–B12,
POL, OR
B1–B8
TEST
LBEN
MODE
CE/LOAD
SEND
TC7109A
AZ
.
INT
RUN/HOLD
REF CAP
REF CAP
OSC OUT
REF OUT
OSC SEL
.
REF IN
REF IN
OSC IN
TELCOM SEMICONDUCTOR, INC.
12-BIT P-COMPATIBLE
IN LO
BUFF
IN HI
COM
INT
V
AZ
V –
+
–
–
+
+
40
39
38
37
36
35
34
33
32
31
30
29
28
26
24
23
22
–5V
+5V OR OPEN
GND
C
0.33 F
+5V
R INT
AZ
+
0.01 F
1 F
3.58MHz
CRYSTAL
(Pin 40).
C
0.15 F
100k
1M
INT
20k
0.2V
1V
EXTERNAL
REFERENCE
REF
–
+
+
–
ANALOG
GND
REF
INPUT