■ 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.

■ 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 QFP100-G1