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TC835 Datasheet

  • TC835

  • PERSONAL COMPUTER DATA ACQUISITION A/D CONVERTER

  • 12頁

  • TELCOM

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TC835
PERSONAL COMPUTER DATA ACQUISITION A/D CONVERTER
FEATURES
s
s
s
s
s
s
s
s
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
碌
V
No Sample and Hold Required
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
碌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
碌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.
2
3
4
5
6
APPLICATIONS
s
s
s
Personal Computer Data Acquisition
Scales, Panel Meters, Process Controls
HP-IL Bus Instrumentation
ORDERING INFORMATION
Part No.
TC835CBU
TC835CKW
TC835CPI
Package
64-Pin PQFP
44-Pin PQFP
28-Pin Plastic DIP
Temperature
Range
0擄C to +70擄C
0擄C to +70擄C
0擄C to +70擄C
NOTE:
Tape and reel available for 44-pin PQFP packages.
TYPICAL APPLICATION
ADDRESS BUS
CONTROL
DATA BUS
+ 5V
V+ REF
CAP
BUF
AZ
GAIN: 10, 20, 50, 100
+15V 鈥?5V
PA0
PA1
PA2
1Y
2Y
3Y
157
10
14
LH0084
16
鈥?/div>
6522
-VIA-
PA3
PA4
PA5
PA6
PA7
CA1
CA2
fIN
B1
D1
VR
D2
鈥?INPUT
D3
D4
ANALOG
STB COMMON
R/H
DGND
fIN
GAIN SELECTION
鈥?5V
REF
VOLTAGE
PB0 PB1 PB2
PB5
PB4
PB3
CHANNEL SELECTION
TELCOM SEMICONDUCTOR, INC.
+
15
1B
2B
3B
SEL
1A
2A
3A
POL
OR
INT
UR
D5
B8
TC835
B4
+ INPUT
B2
11
8
3
9
DG529
DA
DB
WR
A1 A0 EN
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
DIFFERENTIAL
MULTIPLEXER
7
8
TC835-8 11/5/96
3-65

TC835相關(guān)型號PDF文件下載

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