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HI-574A_01

更新时间： 2024-01-22 06:42:11
品牌 Logo 应用领域
英特矽尔 - INTERSIL 转换器微处理器
页数 文件大小 规格书
17页 455K
描述
Complete, 12-Bit A/D Converters with Microprocessor Interface

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HI-574A_01 数据手册

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HI-574A, HI-674A  
TM  
Data Sheet  
June 2001  
File Number 3096.5  
Complete, 12-Bit A/D Converters with  
Microprocessor Interface  
Features  
• Complete 12-Bit A/D Converter with Reference and Clock  
• Full 8-Bit, 12-Bit or 16-Bit Microprocessor Bus Interface  
• Bus Access Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 150ns  
• No Missing Codes Over Temperature  
itle  
I-  
4A,  
-
4A,  
-
4)  
The HI-X74(A) is a complete 12-bit, Analog-to-Digital  
Converter, including a +10V reference clock, three-state  
outputs and a digital interface for microprocessor control.  
Successive approximation conversion is performed by two  
monolithic dice housed in a 28 lead package. The bipolar  
analog die features the Intersil Dielectric Isolation process,  
which provides enhanced AC performance and freedom  
from latch-up.  
• Minimal Setup Time for Control Signals  
• Fast Conversion Times  
- HI-574A (Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25µs  
- HI-674A (Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15µs  
• Low Noise, via Current-Mode Signal Transmission  
Between Chips  
bjec  
Custom design of each IC (bipolar analog and CMOS digital)  
has yielded improved performance over existing versions of  
this converter. The voltage comparator features high PSRR  
plus a high speed current-mode latch, and provides precise  
decisions down to 0.1 LSB of input overdrive. More than 2X  
reduction in noise has been achieved by using current  
instead of voltage for transmission of all signals between the  
analog and digital ICs. Also, the clock oscillator is current  
controlled for excellent stability over temperature.  
omp  
e,  
-Bit  
D
nver  
s
• Byte Enable/Short Cycle (A Input)  
O
- Guaranteed Break-Before-Make Action, Eliminating Bus  
Contention During Read Operation. Latched by Start  
Convert Input (To Set the Conversion Length)  
• Supply Voltage . . . . . . . . . . . . . . . . . . . . . . 12V to 15V  
th  
crop  
esso  
Applications  
The HI-X74(A) offers standard unipolar and bipolar input  
ranges, laser trimmed for specified linearity, gain and offset  
accuracy. The low noise buried zener reference circuit is  
trimmed for minimum temperature coefficient.  
• Military and Industrial Data Acquisition Systems  
• Electronic Test and Scientific Instrumentation  
• Process Control Systems  
erfa  
Power requirements are +5V and 12V to 15V, with typical  
dissipation of 385mW (HI-574A/674A) at 12V.  
utho  
)
eyw  
s
Pinout  
(PDIP, SBDIP)  
TOP VIEW  
tersi  
+5V SUPPLY, V  
LOGIC  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
1
2
STATUS, STS  
DB11 MSB  
DB10  
DATA MODE SEL, 12/8  
rpor  
on,  
ico  
ucto  
/D,  
C,  
3
CHIP SEL, CS  
BYTE ADDR/SHORT  
4
DB9  
CYCLE, A  
O
5
DB8  
READ/CONVERT, R/C  
CHIP ENABLE, CE  
6
DB7  
DIGITAL  
+12V/+15V SUPPLY, V  
CC  
7
DATA  
DB6  
DB5  
DB4  
DB3  
DB2  
DB1  
DB0  
OUTPUTS  
8
+10V REF, REF OUT  
ANALOG  
COMMON, AC  
9
sh,  
10  
11  
12  
13  
14  
REFERENCE INPUT  
nver  
, bit,  
le  
-12V/-15V SUPPLY, V  
EE  
BIPOLAR OFFSET  
BIP OFF  
10V INPUT  
LSB  
dem  
DIG COMMON,  
DC  
20V INPUT  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc. | Copyright © Intersil Americas Inc. 2001  
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