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ICL7129_00

更新时间： 2024-11-09 04:44:15
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英特矽尔 - INTERSIL 转换器
页数 文件大小 规格书
10页 728K
描述
4 Digit LCD, Single-Chip A/D Converter

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ICL7129_00 数据手册

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®
ICL7129  
1
4 / Digit LCD,  
2
July 2000  
Single-Chip A/D Converter  
Features  
Description  
1
• ±19,999 Count A/D Converter Accurate to ±4 Count  
• 10µV Resolution on 200mV Scale  
• 110dB CMRR  
• Direct LCD Display Drive  
• True Differential Input and Reference  
• Low Power Consumption  
The Intersil ICL7129 is a very high performance 4 / -digit,  
2
analog-to-digital converter that directly drives a multiplexed  
liquid crystal display. This single chip CMOS integrated  
circuit requires only a few passive components and a  
reference to operate. It is ideal for high resolution hand-held  
digital multimeter applications.  
• Decimal Point Drive Outputs  
• Overrange and Underrange Outputs  
• Low Battery Detection and Indication  
• 10:1 Range Change Input  
The performance of the ICL7129 has not been equaled  
before in a single chip A/D converter. The successive integra-  
tion technique used in the ICL7129 results in accuracy better  
than 0.005% of full scale and resolution down to 10µV/count.  
The ICL7129, drawing only 1mA from a 9V battery, is well  
suited for battery powered instruments. Provision has been  
made for the detection and indication of a “LOW/BATTERY”  
condition. Autoranging instruments can be made with the  
ICL7129 which provides overrange and underrange outputs  
and 10:1 range changing input. The ICL7129 instantly checks  
for continuity, giving both a visual indication and a logic level  
output which can enable an external audible transducer. These  
features and the high performance of the ICL7129 make it an  
extremely versatile and accurate instrument-on-a-chip.  
Ordering Information  
TEMP.  
o
PART NUMBER RANGE ( C)  
PACKAGE  
40 Ld PDIP  
40 Ld PDIP  
44 Ld MQFP  
PKG. NO.  
E40.6  
ICL7129CPL  
ICL7129RCPL  
ICL7129CM44  
0 to 70  
0 to 70  
0 to 70  
E40.6  
Q44.10x10  
NOTE: “R” indicates device with reversed leads.  
Pinouts  
ICL7129 (PDIP)  
ICL7129 (MQFP)  
TOP VIEW  
TOP VIEW  
1
2
40 OSC2  
OSC1  
OSC3  
39 DP  
1
ANNUNCIATOR  
3
38 DP  
2
DRIVE  
4
37 RANGE  
36 DGND  
35 REF LO  
B , C , CONT  
1
1
5
A , G , D  
1
1
1
1
44 43 42 41 40 39 38 37 36 35 34  
6
F , E , DP  
1
1
1
2
3
4
5
6
7
8
9
V+  
V-  
DGND  
33  
32  
31  
30  
29  
REF HI  
34  
7
B , C , LO BAT  
2
2
RANGE  
8
33 IN HI  
32 IN LO  
31 BUFF  
A , G , D  
2
2
2
2
NC  
DP  
DP  
2
9
F , E , DP  
2
2
NC  
LATCH/  
HOLD  
1
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
B , C , MINUS  
3
3
OSC 2  
OSC 1  
OSC 3  
NC  
30  
29  
C
C
A , G , D  
REF-  
3
3
3
3
5
4
28  
27  
26  
25  
24  
23  
DP /UR  
3
F , E , DP  
REF+  
3
3
DP /OR  
4
28 COMMON  
B , C , BC  
4
4
V
DISP  
27 CONTINUITY  
26 INT OUT  
25 INT IN  
A , D , G  
4
4
NC  
BP1  
BP2  
BP3  
F , E , DP  
4
4
4
ANNUNCE  
DRIVE  
B , C , CONT  
10  
11  
BP3  
1
1
12 13 14 15 16 17 18 19 20 21 22  
24 V+  
BP2  
BP1  
23 V-  
22 LATCH/HOLD  
V
DISP  
21 DP /UR  
3
DP /OR  
4
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 registered trademark of Intersil Americas Inc.  
Copyright © Intersil Americas Inc. 2002. All Rights Reserved  
File Number 3085.2  
1
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