參數(shù)資料
型號: TC835CKW
廠商: Microchip Technology Inc.
英文描述: Personal Computer Data Acquisition A/D Converter
中文描述: 個人計算機數(shù)據(jù)采集的A / D轉(zhuǎn)換器
文件頁數(shù): 1/12頁
文件大小: 206K
代理商: TC835CKW
3-65
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
TC835
FEATURES
I
Upgrade of Pin-Compatible TC7135, ICL7135,
MAX7135 and SI7135
I
Guaranteed 200 kHz Operation
I
Single 5V Operation With TC7660
I
Multiplexed BCD Data Output
I
UART and Microprocessor Interface
I
Control Outputs for Auto-Ranging
I
Input Sensitivity ............................................ 100
μ
V
I
No Sample and Hold Required
APPLICATIONS
I
Personal Computer Data Acquisition
I
Scales, Panel Meters, Process Controls
I
HP-IL Bus Instrumentation
ORDERING INFORMATION
Temperature
Range
Part No.
Package
TC835CBU
TC835CKW
TC835CPI
NOTE:
Tape and reel available for 44-pin PQFP packages.
64-Pin PQFP
44-Pin PQFP
28-Pin Plastic DIP
0
°
C to +70
°
C
0
°
C to +70
°
C
0
°
C to +70
°
C
PERSONAL COMPUTER DATA ACQUISITION A/D CONVERTER
GENERAL DESCRIPTION
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
μ
V 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
μ
P-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.
*See Application Notes 16 and 17 for microprocessor interface tech-
niques.
DATA BUS
CONTROL
ADDRESS BUS
6522
-VIA-
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
CA1
CA2
PB5
PB4
PB3
PB0
PB2
PB1
CHANNEL SELECTION
GAIN SELECTION
1Y
2Y
3Y
1B
2B
3B
SEL
1A
2A
3A
157
POL
OR
UR
D5
B8
B4
B2
B1
D1
D3
D4
STB
R/H
V+
REF
CAP
BUF
AZ
INT
INPUT
+
VR
INPUT
ANALOG
DGND
5V
REF
VOLTAGE
10
14
16
15
8
11
3
9
GAIN: 10, 20, 50, 100
15V
+
15V
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
DIFFERENTIAL
MULTIPLEXER
DG529
DA
DB
WR
A1A0EN
5V
+
fIN
fIN
+
LH0084
TC835
TYPICAL APPLICATION
TC835-8 11/5/96
相關(guān)PDF資料
PDF描述
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