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參數(shù)資料
| 型號： | TC7129CPL |
| 廠商： | TelCom Semiconductor, Inc. |
| 英文描述： | 4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER WITH ON-CHIP LCD DRIVERS |
| 中文描述： | 4-1/2數(shù)字模擬到數(shù)字轉(zhuǎn)換器，帶有片上LCD驅(qū)動器 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 214K |
| 代理商： | TC7129CPL |
3-231
TELCOM SEMICONDUCTOR, INC.
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TC7129
FEATURES
Count Resolution.........................................
±
19,999
I
Resolution on 200 mV Scale.......................... 10
μ
V
I
True Differential Input and Reference
I
Low Power Consumption ...................500
μ
A at 9V
I
Direct LCD Driver for 4-1/2 Digits, Decimal Points,
Low-Battery Indicator, and Continuity Indicator
I
Overrange and Underrange Outputs
I
Range Select Input ............................................10:1
I
High Common-Mode Rejection Ratio ......... 110 dB
I
External Phase Compensation Not Required
I
GENERAL DESCRIPTION
The TC7129 is a 4-1/2 digit analog-to-digital converter
(ADC) that directly drives a multiplexed liquid crystal dis-
play (LCD). Fabricated in high-performance, low-power
CMOS, the TC7129 ADC is designed specifically for high-
resolution, battery-powered digital multimeter applications.
The traditional dual-slope method of A/D conversion has
been enhanced with a successive integration technique to
produce readings accurate to better than 0.005% of full
scale, and resolution down to 10
μ
V per count.
The TC7129 includes features important to multimeter
applications. It detects and indicates low-battery condition.
A continuity output drives an annunciator on the display, and
can be used with an external driver to sound an audible
alarm. Overrange and underrange outputs and a range-
change input provide the ability to create auto-ranging
instruments. For snapshot readings, the TC7129 includes a
latch-and-hold input to freeze the present reading. This
combination of features makes the TC7129 the ideal
choice for full-featured multimeter and digital measurement
applications.
TYPICAL OPERATING CIRCUIT
4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER
WITH ON-CHIP LCD DRIVERS
TC7129-5 10/18/96
ORDERING INFORMATION
Pin
Temperature
Range
Part No.
Layout
Package
TC7129CKW Formed
TC7129CLW —
TC7129CPL Normal
44-Pin PQFP
44-Pin PLCC
40-Pin PDIP
0
°
C to +70
°
C
0
°
C to +70
°
C
0
°
C to +70
°
C
TC7129
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
9V
+
TC04
LOW BATTERY CONTINUITY
V+
5 pF
120 kHz
10 pF
0.1
μ
F
20
k
0.1
μ
F
100 k
1
μ
F
0.1
μ
F
150 k
10 k
V+
VIN
–
+
+
*
NOTE:
RC network between pins 26 and 28 is not required.
*
330 k
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相關(guān)代理商/技術(shù)參數(shù) |
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| TC7129CPL713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129IJL713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129IKW713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129ILW713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
| TC7129IPL713 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers |
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