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ES51998 Datasheet(PDF) 1 Page - Cyrustek corporation |
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ES51998 Datasheet(HTML) 1 Page - Cyrustek corporation |
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1 / 31 page  ver 1.7 12/01/12 1 ES51998(60000counts) DMM Analog front end/Insulation Features • 60000 counts dual-slope SADC (2 cnvs/s.) • Input signal full scale: 630mV (Max. 63000 count) • Built-in 600 counts fast speed (x10) FADC • Fast ADC conversion rate: 20 times/s • 100L LQFP package • 3V DC regulated power supply • Support digital multi-meter function *Voltage measurement (AC/DC) *Current measurement (AC/DC) *Dual mode for frequency with voltage or current *Resistance measurement (600.00Ω – 60.000MΩ) *Conductance measurement (60.00nS) *Capacitance measurement (6.000nF – 60.00mF) (Taiwan patent no.: 323347, 453443) *Diode or continuity mode measurement *Frequency counter with duty cycle display: 60.000Hz – 60.000MHz 5.0% – 95.0% • ADP mode (AC or DC mode is available) • 3dB BW selectable for low pass filter at AC mode (Taiwan patent no.: 362409) (China patent no.: 1363073) • Band-gap reference voltage output • Peak-hold measurement (Taiwan patent no.:476418) • 3-wire serial bus for MPU I/O port • MPU I/O power level selectable by external pins • On-chip buzzer driver and frequency selectable by MPU command • High-crest-factor signal detection (Taiwan patent no.: 234661) • Multi-level battery voltage detection • Support sleep mode by external chip select pin Application Clamp-on meter Digital multi-meter Description ES51998 is an analog frond end chip of DMM built-in 60000(SADC)/600(FADC) counts dual ADCs. The SADC is operated at slower speed for higher resolution. The FADC is operated at higher speed for lower resolution. ES51998 provides voltage & current (AC/DC) measurement, resistance measurement, capacitance measurement, diode/continuity measurement, frequency measurement, duty cycle measurement and voltage peak-hold function. An analog switches network is built-in for insulation resistance application. The ES51998 also supports multi-level battery detection, low-pass-filter feature for AC mode and dual mode measurement for V+F & A+F. A 3-wire serial bus for MPU I/O port will be used easily for firmware design. Flexible function design is supported for different kinds of DMM or Clamp-on meter application. . |
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