TC835 Datasheet, PDF (12/12 Pages) TelCom Semiconductor, Inc – PERSONAL COMPUTER DATA ACQUISITION A/D CONVERTER

PERSONAL COMPUTER
DATA ACQUISITION A/D CONVERTER
TC835
TYPICAL APPLICATIONS DIAGRAMS
4-1/2 Digit ADC with Multiplexed Common Cathode LED Display
+5V
+5V
SET VREF = 1V
6.8V
–5V
1 _V–
28
UR
TC04
100
kΩ
2 _{REF IN}
27
OR
1.22V
ANALOG
GND
0.33 µF
1 µF
3 _ANALOG
GND
26
STROBE
4 INT
OUT
5
AZ IN
25
RUN/HOLD
24
DGND
6 BUFF
OUT
23
POLARITY
100 kΩ _{7 CR+EF}
22
CLK IN
100
kΩ
1 µF _{8 CR– EF}
21
BUSY
+
9
–INPUT
20
(LSD) D1
SIG
0.1
IN
–
µF
10 _+INPUT
D2 ¹⁹
+5V ¹¹ V+
TC835 ^{D3 18}
12 _{D5 (MSD)}
D4 ¹⁷
150Ω
47
kΩ
13
B1 (LSB)
14
B2
(MSB) B8 ¹⁶
B4 ¹⁵
10
9
150Ω ₁₁
8
12
7
13 _CD4513 6
BE
14
5
15
4
16
3
+5V
17
2
18
1
fOSC = 200 kHz
–5V
1
23
V–
4 _{INT OUT}
0.33 µF
POL _D1 ²⁰
D2 ¹⁹
5 _{AZ IN}
18
D3
1 µF
6 _{BUFF OUT}
D4 ¹⁷
100 kΩ
200 kHz
22 _{fIN TC835}
100 kΩ
+
ANALOG
INPUT
–
10
+INPUT
9 _–INPUT
B8 ¹⁶
B4 ¹⁵
B2 ¹⁴
B1 ¹³
D5 ¹²
3 _ANALOG
26
STROBE
COMMON
OR ²⁷
REF
IN
V+
2
6.8 kΩ
100 kΩ
TC04
+5V
1/2 CD4030
4-1/2 DIGIT LCD
SEGMENT
DRIVE
CD4081
1/4 CD4030
CD4071
+5V
1/4 CD4030
1/4 CD4081
D
1/2 ^Q
CD4013
CLK
S
R
+5V
5 _BP
31 _D1
32 _D2
33 _D3
34 _D4
30
TC7211A
B3
29 _B2
28
B1
27 _B0
V+ ¹
GND ³⁵
Negative Supply Voltage Generator
+5V
V+ ¹¹
8
V ^{– 1 (–5V)}
5
TC835
24
10 µF
+
TC7660
4
+2 ³
10 µF
3-76
TELCOM SEMICONDUCTOR, INC.