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TC835

更新时间： 2024-11-30 22:20:03
品牌 Logo 应用领域
TELCOM 转换器计算机
页数 文件大小 规格书
12页 208K
描述
PERSONAL COMPUTER DATA ACQUISITION A/D CONVERTER

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中文翻译

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TC835 数据手册

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3
TC835  
PERSONAL COMPUTER DATA ACQUISITION A/D CONVERTER  
GENERAL DESCRIPTION  
FEATURES  
■ Upgrade of Pin-Compatible TC7135, ICL7135,  
MAX7135 and SI7135  
■ Guaranteed 200 kHz Operation  
■ Single 5V Operation With TC7660  
■ Multiplexed BCD Data Output  
■ UART and Microprocessor Interface  
■ Control Outputs for Auto-Ranging  
■ Input Sensitivity ............................................ 100 µV  
■ No Sample and Hold Required  
The TC835 is a low-power, 4-1/2 digit (0.005% resolu-  
tion), BCD analog-to-digital converter (ADC) that has been  
characterized for 200 kHz clock rate operation. The five  
conversions per second rate is nearly twice as fast as the  
ICL7135 or TC7135. The TC835 (like the TC7135) does  
not use the external diode-resistor roll-over error compen-  
sation circuits required by the ICL7135.  
The multiplexed BCD data output is perfect for interfac-  
ing to personal computers. The low-cost, greater than 14-  
bit high-resolution, and 100 µV sensitivity makes the TC835  
exceptionally cost-effective.  
Microprocessor-based data acquisition systems are  
supported by the BUSY and STROBE outputs, along with  
the RUN/HOLD input of the TC835. The overrange, under-  
range, busy, and run/hold control functions and multiplexed  
BCD data outputs make the TC835 the ideal converter for  
µP-based scales and measurement systems and intelligent  
panel meters.*  
The TC835 interfaces with full-function LCD and LED  
display decoder/drivers. The UNDERRANGE and  
OVERRANGE outputs may be used to implement an auto-  
ranging scheme or special display functions.  
APPLICATIONS  
■ Personal Computer Data Acquisition  
■ Scales, Panel Meters, Process Controls  
■ HP-IL Bus Instrumentation  
ORDERING INFORMATION  
Temperature  
Part No.  
Package  
Range  
TC835CBU  
TC835CKW  
TC835CPI  
64-Pin PQFP  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
44-Pin PQFP  
28-Pin Plastic DIP  
NOTE: Tape and reel available for 44-pin PQFP packages.  
*See Application Notes 16 and 17 for microprocessor interface tech-  
niques.  
TYPICAL APPLICATION  
ADDRESS BUS  
CONTROL  
+
5V  
+
DATA BUS  
V
REF  
CAP  
BUF  
AZ  
GAIN: 10, 20, 50, 100  
+15V –15V  
DG529  
POL  
OR  
UR  
D5  
B8  
B4  
PA0  
PA1  
PA2  
1Y  
2Y  
3Y  
1B  
2B  
3B  
SEL  
1A  
2A  
INT  
11  
CHANNEL 1  
CHANNEL 2  
CHANNEL 3  
CHANNEL 4  
+
8
3
TC835  
+
D
A
157  
10  
LH0084  
9
INPUT  
3A  
B2  
D
B
14  
–
16  
6522  
-VIA-  
PA3  
PA4  
PA5  
PA6  
PA7  
CA1  
CA2  
B1  
D1  
D2  
D3  
D4  
STB  
R/H  
f
WR  
15  
V
R
REF  
VOLTAGE  
A
A
EN  
0
1
–
INPUT  
DIFFERENTIAL  
MULTIPLEXER  
ANALOG  
COMMON  
DGND  
IN  
f
IN  
GAIN SELECTION  
–
5V  
PB5  
PB4  
PB0 PB1 PB2 PB3  
CHANNEL SELECTION  
TC835-8 11/5/96  
TELCOM SEMICONDUCTOR, INC.  
3-65  
1234567...12

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