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TC7136CKW PDF预览

TC7136CKW

更新时间： 2024-11-22 22:20:15
品牌 Logo 应用领域
TELCOM 转换器
页数 文件大小 规格书
12页 193K
描述
LOW POWER, 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS

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中文翻译

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TC7136CKW 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：PLASTIC, QFP-44Reach Compliance Code：unknown
风险等级：5.68最大模拟输入电压：2 V
转换器类型：ADC, DUAL-SLOPEJESD-30 代码：S-PQFP-G44
JESD-609代码：e0最大线性误差 (EL)：0.05%
模拟输入通道数量：1功能数量：1
端子数量：44最高工作温度：70 °C
最低工作温度：输出位码：BINARY
封装主体材料：PLASTIC/EPOXY封装代码：QFP
封装等效代码：QFP44,.5SQ,32封装形状：SQUARE
封装形式：FLATPACK电源：9 V
认证状态：Not Qualified子类别：Analog to Digital Converters
标称供电电压：9 V表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：0.8 mm端子位置：QUAD
Base Number Matches：1

TC7136CKW 数据手册

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3
TC7136  
TC7136A  
LOW POWER, 3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS  
FEATURES  
GENERAL DESCRIPTION  
■ Fast Overrange Recovery, Guaranteed First  
Reading Accuracy  
The TC7136 and TC7136A are low-power, 3-1/2 digit  
with liquid crystal display (LCD) drivers with analog-to-  
digital converters. These devices incorporate an "integra-  
tor output zero" phase which guarantees overrange  
recovery. The performance of existing TC7126, TC7126A  
and ICL7126-based systems may be upgraded with minor  
changes to external, passive components.  
The TC7136A has an improved internal zener refer-  
ence voltage circuit which maintains the analog common  
temperature drift to 35 ppm/°C (typical) and 75 ppm/°C  
(maximum). This represents an improvement of two to four  
times over similar 3-1/2 digit converters. The costly, space-  
consuming external reference source may be removed.  
The TC7136/A limits linearity error to less than 1 count  
on 200 mV or 2V full-scale ranges. Roll-over error — the  
difference in readings for equal magnitude but opposite  
polarity input signals — is below ±1 count. High-impedance  
differential inputs offer 1 pA leakage currents and a 1012Ω  
input impedance. The differential reference input allows  
ratiometric measurements for ohms or bridge transducer  
measurements. The 15 µVP-P noise performance guaran-  
tees a "rock solid" reading. The auto-zero cycle guarantees  
a zero display readout for a 0V input.  
■ Low Temperature Drift Internal Reference  
TC7136 ....................................... 70 ppm/°C Typ  
TC7136A ..................................... 35 ppm/°C Typ  
■ Guaranteed Zero Reading With Zero Input  
■ Low Noise.................................................... 15 µVP-P  
■ High Resolution .............................................. 0.05%  
■ Low Input Leakage Current ...................... 1 pA Typ  
10 pA Max  
■ Precision Null Detectors With True Polarity at  
Zero  
■ High-Impedance Differential Input  
■ Convenient 9V Battery Operation With  
Low Power Dissipation ........................ 500 µW Typ  
900 µW Max  
TYPICAL APPLICATIONS  
■ Thermometry  
■ Bridge Readouts: Strain Gauges, Load Cells, Null  
Detectors  
■ Digital Meters: Voltage/Current/Ohms/Power, pH  
■ Digital Scales, Process Monitors  
■ Portable Instrumentation  
TYPICAL OPERATING CIRCUIT  
ORDERING INFORMATION  
PART CODE  
TC7136X X XXX  
0.1 µF  
A or blank*  
33  
–
34  
C
LCD  
+
C
REF  
REF  
R (reversed pins) or blank (CPL pkg only)  
* "A" parts have an improved reference TC  
Package Code (see below):  
Package  
1 MΩ  
31  
SEGMENT  
DRIVE  
+
9–19  
+
V
IN  
22–25  
ANALOG  
INPUT  
–
0.01 µF  
20  
–
30  
32  
POL  
BP  
V
IN  
MINUS SIGN  
21  
1
BACKPLANE  
ANALOG  
COMMON  
Temperature  
Range  
+
V
Code  
Package  
Pin Layout  
28  
V
CKW  
CLW  
CPL  
44-Pin PQFP  
44-Pin PLCC  
40-Pin PDIP  
Formed Leads  
—
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
240 kΩ  
BUFF  
+
TC7136  
TC7136A  
9V  
0.47  
µF  
180 kΩ  
36  
+
Normal  
V
29  
REF  
10 kΩ  
C
V
AZ  
–
35  
26  
0.15 µF  
V
AVAILABLE PACKAGES  
REF  
27  
–
V
INT  
1 CONVERSION/SEC  
OSC OSC OSC  
2
3
1
C
39  
38  
40  
OSC  
TO ANALOG COMMON  
(PIN 32)  
50 pF  
R
OSC  
44-Pin Plastic Quad Flat 44-Pin Plastic Chip  
Package Formed Leads Carrier PLCC  
40-Pin Plastic DIP  
560 kΩ  
TC7136-6 10/18/96  
TELCOM SEMICONDUCTOR, INC.  
3-247  
1234567...12

中文翻译

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