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參數(shù)資料
| 型號(hào)： | TC835C/PI |
| 元件分類(lèi)： | ADC |
| 英文描述： | 1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PDIP28 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-28 |
| 文件頁(yè)數(shù)： | 1/26頁(yè) |
| 文件大小： | 420K |
| 代理商： | TC835C/PI |
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2007 Microchip Technology Inc.
DS21478C-page 1
TC835
Features
Upgrade of Pin-Compatible TC7135, ICL7135
200 kHz Operation
Single 5V Operation With TC7660
Multiplexed BCD Data Output
UART and Microprocessor Interface
Control Outputs for Auto-Ranging
Input Sensitivity: 100 V
No Sample and Hold Required
Applications
Personal Computer Data Acquisition
Scales, Panel Meters, Process Controls
HP-IL Bus Instrumentation
General Description
The TC835 is a low power, 4-1/2 digit (0.005%
resolution), 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 rollover error compensation 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 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, UNDERRANGE, BUSY and RUN/
HOLD control functions, plus multiplexed BCD data
outputs, make the TC835 the ideal converter for micro-
processor-based scales, 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.
Typical Application
Channel 1
Channel 2
Channel 3
Channel 4
Data Bus
Control
Address Bus
R 6522 P
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
CA1
CA2
PB0
PB3
PB2
PB1
Channel Selection
1Y
2Y
3Y
1B
2B
3B
S
1A
2A
3A
HCTS157
POL
OR
UR
D5
B8
B4
B2
B1
D1
D2
D3
D4
STB
R/H
V+ REF CAP
BUF
AZ
INT
INPUT+
VR
Input
Analog
Common
DGND
-5V
REF Voltage
+15V -15V
Differential
Multiplexer
DG529
DA
DB
WR
A1 A0 EN
5V
+
FIN
TC835
FIN
Personal Computer Data Acquisition A/D Converter
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