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參數(shù)資料
| 型號： | TC7109IJL |
| 廠商： | TelCom Semiconductor, Inc. |
| 英文描述： | 12-BIT UP-COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS |
| 中文描述： | 12位向上兼容的模擬數(shù)字轉(zhuǎn)換器 |
| 文件頁數(shù)： | 6/21頁 |
| 文件大?。?/td> | 274K |
| 代理商： | TC7109IJL |
3-96
TELCOM SEMICONDUCTOR, INC.
TC7109
TC7109A
12-BIT
μ
P-COMPATIBLE
ANALOG-TO-DIGITAL CONVERTERS
TC7109/A PIN DESCRIPTION
(Cont.)
40-Pin PDIP
Pin Number
Symbol
Description
27
SEND
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
+
(Pin 40).
Buffer Amplifier Output
Auto-Zero Node — Inside foil of C
AZ
.
Integrator Output — Outside foil of C
INT
.
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).
28
29
30
31
32
33
34
35
36
37
38
39
40
V
–
REF OUT
BUFFER
AUTO-ZERO
INTEGRATOR
COMMON
INPUT LOW
INPUT HIGH
REF IN +
REF CAP +
REF CAP –
REF IN –
V
+
NOTE:
All digital levels are positive true.
Figure 1. TC7109A UART Interface (Send Any Word to UART to Transmit Latest Result)
+
1
25
2
19
17
18
21
20
27
GND
BUFF OSC OUT
STATUS
HBEN
B1–B8
TEST
LBEN
MODE
CE/LOAD
SEND
V
40
39
38
37
36
35
34
33
32
31
30
29
28
26
24
23
22
TC7109A
CLK
Q11
RESET
1
2
3
4
5–12
13
14
15
16
V
OSC CONTROL
GND
RRD
RBR1–8
PE
FE
OE
SFD
RR1
TRO
TRC
OSC IN
EPE
CLS1
CLS2
SBS
PI
CRL
*TBR1–8
TRE
DRR
DR
TBRL
TBRE
MR
40
17
39
38
37
36
35
34
24
18
19
23
22
21
6403
CMOS UART
+5V
GND
+5V
GND
25
SERIAL
INPUT
20
SERIAL
OUTPUT
15
10
11
GND
GND
+5V
+5V
GND
+5V
–5V
+5V OR OPEN
GND
3.58MHz
CRYSTAL
ANALOG
GND
EXTERNAL
REFERENCE
+
+
–
INPUT
C
0.33
μ
F
AZ
C
0.15
μ
F
INT
0.01
μ
F
1M
1
μ
F
6
8
3–8
9–16
B9–B12,
POL, OR
26–33
For lowest power consumption, TBR1–TBR8 inputs
should have 100k
pull-up resistors to +5V.
RINT
20k
100k
0.2V
1V
CD4040B
REF IN–
REF CAP–
REF CAP+
REF IN+
IN HI
IN LO
COM
INT
AZ
REF OUT
BUFF
V–
RUN/HOLD
OSC SEL
OSC OUT
OSC IN
REF
REF
8
–
*
NOTE:
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