NJU9214 데이터 시트보기 (PDF) - Japan Radio Corporation
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NJU9214 Datasheet PDF : 28 Pages
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NJU9214
PRELIMINARY
43/4 DIGIT SINGLE CHIP DIGITAL MULTIMETER LSI
s GENERAL DESCRIPTION
The NJU9214 is a 43/4 digits single chip digital
multimeter LSI with 42 segments bargraph display.
The NJU9214 realizes high precision of ±40,000 counts
measurement 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.
The input attenuator part is simplified because the
resistor for resistance 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 Converter, and Data output by the on
chip RS-232C interface circuit.
The NJU9214 is suitable for high precision and high
performance multimeter.
PACKAGE OUTLINE
NJU9214FG1
s FEATURES
q 43/4 Digit Display ( Available for UP to ±39,999 Display )
q 42 Segments Quick Response Bargraph Display
q NJRC Original Dual-Slope A to D Converter ( ±40,000Counts )
q High Speed Dual-Slope A to D Converter ( ±400Counts )
q Quick Response Auto-Ranging ( 20times/sec )
q Frequency / Capacitance / Tachometer / Adapter Measurement
q Root-Mean-Square Measurement by connecting a External RMS-DC Converter
q External Relay Driving
q Data Memory / Data Hold / Relative Display / MAX, MIN Display
q Power-on Initializing
q Auto Power-off
q Buttery Life Detector
q Rotary / Push SW Mode Selection
q 1/4 Duty LCD Display Driver
q Piezo Buzzer Direct Driving
q RS-232C Interface
q External Reference Input required
q Low Operating Current
q C-MOS Technology
q Package Outline QFP100-G1
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