Datasheet > NJU9214

NJU9214

更新时间： 2024-09-17 22:32:51

品牌	Logo	应用领域
NJRC		/
页数	文件大小	规格书
29页	578K
描述
4.3/4 DIGIT SINGLE CHIP DIGITAL MULTIMETER LSI

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NJU9214 数据手册

NJU9214

PRELIMINARY

4•3/4 DIGIT SINGLE CHIP DIGITAL MULTIMETER LSI

!GENERAL DESCRIPTION

PACKAGE OUTLINE

The NJU9214 is a 4•3/4 digits single chip digital multimeter LSI with

42 segments bargraph display.

The NJU9214 realizes high precision of ±40,000 counts measure-

ment by the NJRC original dual-slope A to D converter and realizes

also quick response bargragh display and auto-ranging by another high

speed dual-slope A to D converter.

NJU9214FG1

The input attenuator part is simplified because the resistor for resis-

tance measurement is applied for voltage bleeder resistor.

Furthermore, the NJU9214 realizes root-mean-square measurement

for AC voltage and current by connecting a External RMS-DC Con-

verter, and Data output by the on chip RS-232C interface circuit.

The NJU9214 is suitable for high precision and high performance

multimeter.

!FEATURES

• 4•3/4 Digit Display (Available for UP to ±39,999 Display)

• 42 Segments Quick Response Bargraph Display

• NJRC Original Dual-Slope A to D Converter (±40,000Counts)

• High Speed Dual-Slope A to D Converter (±400Counts)

• Quick Response Auto-Ranging (20times/sec)

• Frequency/Capacitance/Tachometer/Adapter Measurement

• Root-Mean-Square Measurement by connecting a External RMS-DC Converter

• External Relay Driving

• Data Memory/Data Hold/Relative Display/MAX, MIN Display

• Power-on Initializing

• Auto Power-off

• Buttery Life Detector

• Rotary/Push SW Mode Selection

• 1/4 Duty LCD Display Driver

• Piezo Buzzer Direct Driving

• RS-232C Interface

• External Reference Input required

• Low Operating Current

• C-MOS Technology

• Package Outline TQFP100

12 3 4 5 6 7...29

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