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參數資料
| 型號： | HI-7159A |
| 廠商： | Intersil Corporation |
| 英文描述： | 128 MACROCELL 3.3 VOLT ISP CPLD - NOT RECOMMENDED for NEW DESIGN |
| 中文描述： | 微處理器兼容，5-1/2位A / D轉換 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 210K |
| 代理商： | HI-7159A |
1
HI-7159A
Microprocessor-Compatible, 5-
1
/
2
Digit
A/D Converter
The Intersil HI-7159A is a monolithic A/D converter that uses
a unique dual slope technique which allows it to resolve input
changes as small as 1 part in 200,000 (10
μ
V) without the use
of critical external components. Its digital autozeroing feature
virtually eliminates zero drift over temperature. The device is
fabricated in Intersil’ proprietary low noise BiMOS process,
resulting in exceptional linearity and noise performance. The
HI-7159A’s resolution can be switched between a high
resolution 200,000 count (5
1
/
2
digit) mode, and a high speed
20,000 count (4
1
/
2
digit) mode without any hardware
modifications. In the 4
1
/
2
digit uncompensated mode, speeds
of 60 conversions per second can be achieved. The HI-7159A
is designed to be easily interfaced with most microprocessors
through either of its three serial and one parallel interface
modes. In the serial modes, any one of four common baud
rates is available.
Features
±
200,000 Count A/D Converter
2V Full Scale Reading With 10
μ
V Resolution
15 Conversions Per Second in 5
1
/
2
Digit Mode
60 Conversions Per Second in 4
1
/
2
Digit Mode
Serial or Parallel Interface Modes
Four Selectable Baud Rates
Differential Analog Input
Differential Reference Input
Digital Autozero
Applications
Weigh Scales
Part Counting Scales
Laboratory Instruments
Process Control/Monitoring
Energy Management
Seismic Monitoring
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
HI3-7159A-5
0 to 70
28 Ld PDIP
E28.6
Pinout
HI-7159A
(PDIP)
TOP VIEW
Functional Block Diagram
V
CC
INT OUT
INT IN
BUF OUT
C
REF-
GUARD
C
REF-
C
REF+
C
REF+
GUARD
V
REF
HI
V
REF
LO
A
GND
V
IN
HI
V
IN
LO
V
EE
SEL
D
GND
P7/BRS1
P6/BRS0
P5/SAD3
P3/SAD1
P1/SMS1
P0/SMS0
CS/SAD4
WR/TXD
RD/RXD
X
TAL
P4/SAD2
P2/SAD0
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
+
-
+
-
+
BUFFER
INTEGRATOR
COMPARATOR
ANALOG SWITCHES
CONTROL
SECTION
AND
LATCHES
ANALOG
STATE
MACHINE
UART
BUS
INTERFACE
UNIT
I
SEL
8 BIT
BUS
A
GND
V
EE
V
CC
X
TAL
D
GND
C
REF
CS
WR
RD
R
INT
C
INT
V
IN LO
V
IN HI
V
REF LO
V
REF HI
-
Data Sheet
January 1999
File Number
2936.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Copyright
Intersil Corporation 1999
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