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HI-574A

更新时间： 2022-12-12 12:27:54
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
18页 202K
描述
Complete, 12-Bit A/D Converters with Microprocessor Interface

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HI-574A 数据手册

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HI-574A, HI-674A,  
HI-774  
Complete, 12-Bit A/D Converters  
with Microprocessor Interface  
August 1997  
Features  
Description  
• 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  
The HI-X74(A) is a complete 12-bit, Analog-to-Digital  
Converter, including a +10V reference clock, three-state out-  
puts and a digital interface for microprocessor control. Succes-  
sive approximation conversion is performed by two monolithic  
dice housed in a 28 lead package. The bipolar analog die fea-  
tures the Intersil Dielectric Isolation process, which provides  
enhanced AC performance and freedom from latch-up.  
• Minimal Setup Time for Control Signals  
• Fast Conversion Times  
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.  
- HI-574A (Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25µs  
- HI-674A (Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15µs  
- HI-774 (Max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9µs  
• Digital Error Correction (HI-774)  
• Low Noise, via Current-Mode Signal  
Transmission Between Chips  
• 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)  
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.  
• Supply Voltage . . . . . . . . . . . . . . . . . . . . . ±12V to ±15V  
Power requirements are +5V and ±12V to ±15V, with typical  
dissipation of 385mW (HI-574A/674A) and 390mW (HI-774) at  
12V. All models are available in sidebrazed DIP, PDIP, and  
CLCC. For additional HI-Rel screening including 160 hour burn-  
in, specify “-8” suffix. For MIL-STD-883 compliant parts, request  
HI-574A/883, HI-674A/883, and HI-774/883 data sheets.  
Applications  
• Military and Industrial Data Acquisition Systems  
• Electronic Test and Scientific Instrumentation  
• Process Control Systems  
Pinouts  
(PDIP, SBDIP)  
TOP VIEW  
(CLCC)  
TOP VIEW  
+5V SUPPLY, V  
LOGIC  
1
2
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
STATUS, STS  
DB11 MSB  
DB10  
DATA MODE SEL, 12/8  
3
CHIP SEL, CS  
BYTE ADDR/SHORT  
4
DB9  
CYCLE, A  
O
44  
43 42 41 40  
6
5
4
3
2
1
5
DB8  
READ/CONVERT, R/C  
CHIP ENABLE, CE  
7
39  
38  
NC  
NC  
NC  
NC  
6
DB7  
8
DIGITAL  
+12V/+15V SUPPLY, V  
CC  
7
DATA  
DB6  
DB5  
DB4  
DB3  
DB2  
DB1  
DB0  
READ CONVERT, R/C  
9
37 DB9  
OUTPUTS  
10  
11  
12  
DB8  
DB7  
DB6  
DB5  
DB4  
DB3  
NC  
+10V REF, REF OUT  
8
CHIP ENABLE, CE  
36  
35  
34  
33  
32  
31  
30  
29  
+15V SUPPLY, V  
CC  
+10V REFERENCE,  
REF OUT  
ANALOG  
COMMON, AC  
9
10  
11  
12  
REFERENCE INPUT  
ANALOG COMMON, AC 13  
-12V/-15V SUPPLY, V  
EE  
REFERENCE INPUT,  
14  
REF IN  
-15V SUPPLY, V  
EE  
BIPOLAR OFFSET  
BIP OFF  
15  
10V INPUT 13  
NC 16  
BIPOLAR OFFSET,  
LSB  
DIG COMMON,  
DC  
17  
DB2  
14  
20V INPUT  
BIP OFF  
18 19 20 21 22 23 24 25 26 27 28  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
File Number 3096.4  
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999  
6-952  
1234567...18

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