Datasheet > TC7129

TC7129

更新时间： 2024-11-18 22:42:27

品牌	Logo	应用领域
TELCOM		驱动器转换器
页数	文件大小	规格书
15页	213K
描述
4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER WITH ON-CHIP LCD DRIVERS

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中文翻译

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数据手册

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TC7129 数据手册

TC7129

4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER

WITH ON-CHIP LCD DRIVERS

FEATURES

GENERAL DESCRIPTION

■ Count Resolution......................................... ±19,999

■ Resolution on 200 mV Scale.......................... 10 µV

■ True Differential Input and Reference

■ Low Power Consumption ...................500 µA at 9V

■ Direct LCD Driver for 4-1/2 Digits, Decimal Points,

Low-Battery Indicator, and Continuity Indicator

■ Overrange and Underrange Outputs

■ Range Select Input ............................................ 10:1

■ High Common-Mode Rejection Ratio ......... 110 dB

■ External Phase Compensation Not Required

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 µV per count.

The TC7129 includes features important to multimeter

applications. It detects and indicates low-battery condition.

Acontinuityoutputdrivesanannunciatoronthedisplay, 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.

ORDERING INFORMATION

Layout

Temperature

Range

Part No.

Package

TC7129CKW

TC7129CLW

TC7129CPL

Formed

—

44-Pin PQFP

44-Pin PLCC

40-Pin PDIP

0°C to +70°C

Normal

TYPICAL OPERATING CIRCUIT

LOW BATTERY

CONTINUITY

5 pF

20 19 18 17 16 15 14 13 12 11 10

120 kHz

TC7129

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

330 kΩ

0.1 µF

10 pF

0.1

µF

0.1 µF

1 µF

150 kΩ

kΩ

TC04

10 kΩ

100 kΩ

–

NOTE:

RC network between pins 26 and 28 is not required.

TC7129-5 10/18/96

TELCOM SEMICONDUCTOR, INC.

3-231

12 3 4 5 6 7...15

中文翻译

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与TC7129相关器件

型号	品牌	获取价格	描述	数据表
TC7129_06	MICROCHIP	获取价格	4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
TC7129_13	MICROCHIP	获取价格	4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
TC7129CJL	MICROCHIP	获取价格	1-CH DUAL-SLOPE ADC, CDIP40, CERAMIC, DIP-40
TC7129CJL713	MICROCHIP	获取价格	4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
TC7129CKW	TELCOM	获取价格	4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER WITH ON-CHIP LCD DRIVERS
TC7129CKW	MICROCHIP	获取价格	4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
TC7129CKW713	MICROCHIP	获取价格	4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
TC7129CLW	MICROCHIP	获取价格	4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
TC7129CLW	TELCOM	获取价格	4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER WITH ON-CHIP LCD DRIVERS
TC7129CLW713	MICROCHIP	获取价格	4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers

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