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Multimeter
Multimeter can measure AC and DC voltage, AC and DC current, resistance, capacitance, frequency, diode, transistor, connectivity, and temperature.
Program overview
This product series is a digital multimeter IC integrated with TRMS (2kHz), LCD display driver. The built-in UART can achieve AC and DC voltage, AC and DC current, frequency, resistance, capacitance, diode (maximum voltage drop is 3.3V), triode, on-off, temperature, NCV, communication, pulse output and other functions of digital multimeters. It supports automatic and manual measurement with stable measurement up to 6000 Counts. The IC integrates a multi-function network for the application of digital multimeters and high-precision resistors so the temperature drift parameters and consistency are better, and the complexity of the external circuit is reduced. The OTP can be programmed in situ and the programming voltage is internally generated. Infrequent data changes such as calibration factors can be stored in OTP in place of external EEPROM.
Program advantages

  • High measurement accuracy, integrated TRMS, no external rectifier device needed

  • Highly integrated and fewer peripheral components

  • Integrated calibration algorithm to save production calibration time

  • Low power consumption leading to longer product lifetime

High measurement accuracy, integrated TRMS, no external rectifier device needed

Highly integrated and fewer peripheral components

Integrated calibration algorithm to save production calibration time

Low power consumption leading to longer product lifetime

Features

  • Maximum display: 6100

  • Conversion rate: 3 Times per second

  • Range conversion: Manual/Automatic

  • Operating voltage range: 2.4~3.6V

  • Operating current: 3mA (while sleeping ≤ 2μA)

  • AC rectification: Built-in true RMS processor without external components, bandwidth up to 2kHz，measurement error <0.5%

  • Data recording: Reading hold function

  • Automatic shutdown: 15 minutes

  • Buzzer frequency: About 1.95kHz (+/-1%)

  • Display mode: 4 * 15 LCD, unit symbol and backlight display

  • Reference voltage: 1.2V，50ppm/℃

  • Calibration method: No need for EEPROM or potentiometer

  • Alarm setting: Voltage range selectable

  • Temperature detection includes an internal temperature detection function. The thermocouple temperature measurement does not require external cold junction compensation circuit

  • Low voltage detection with selectable external or internal detection

Application diagram
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