NJU9214
PRELIMINARY
4 3/4 DIGIT SINGLE CHIP DIGITAL MULTIMETER LSI
s GENERAL DESCRIPTION
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
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
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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 QFP100-G1
