Mysentech M1820ZT5

The M601, M1601, and M1820 series are high-precision mixed-signal digital-analog temperature sensing ICs, achieving a maximum measurement accuracy of ±0.1℃ with no user calibration required. The temperature sensing principle is based on the characteristic relationship between CMOS semiconductor PN junction temperature and bandgap voltage. After small-signal amplification, analog-to-digital conversion, and digital calibration compensation, the data is output via a digital bus. Key features include high accuracy, excellent consistency, fast temperature measurement, low power consumption, flexible programmable configuration, and long service life. The IC integrates a 16-bit ADC with a resolution of 0.004°C and an ultra-wide operating range of -70°C to +150°C. Each IC carries a 64-bit ID serial number and undergoes 100% test calibration before shipment, with calibration coefficients fitted according to the temperature error characteristics and compensation calculations performed automatically on-chip. To simplify system integration, functions such as ID search, temperature data memory access, and feature configuration are all based on digital 1-Wire protocol commands, requiring only a single GPIO port on the host microprocessor for read/write access. The 1-Wire interface enables a low-cost multi-node sensing and networking solution over a shared single data bus, supporting long transmission distances and a large number of nodes, making it well suited for spatially distributed sensor networks. Up to 100 nodes can be daisy-chained over a network spanning 100 to 500 meters. The IC integrates non-volatile E²PROM storage for retaining the chip ID, high/low temperature alarm thresholds, temperature calibration correction values, and user-defined information such as sensor node numbers and location data. The M601 series (M601, M601Z, M601W) also features an ALERT alarm output pin, facilitating hardware alarm expansion applications.

• Chip models: M1820Z/M1820P/M1820W/M1820B
• Temperature conversion time: 10.5ms
• Operating voltage range: 1.8V~5.5V
• Communication interface: Standard 1-Wire interface
• Waterproof rating: IP67
• Maximum temperature accuracy: ±0.1°C
• Temperature measurement range: -70°C ~ +150°C
• Low power consumption: Typical standby current 0.1μA @ 3.3V, peak measurement current 0.45mA @ 3.3V, average measurement current 5.2μA (@3.3V, 1s cycle)
• Wide operating voltage range: 1.8V - 5.5V
• Temperature sensing resolution: 16-bit output, 0.004°C
• Configurable temperature conversion time: 10.5ms/5.5ms/4ms
• Configurable single-shot/periodic measurement
• User-settable temperature alarm
• 32-bit additional E²PROM space for user data storage
• 64-bit unique ID serial number per device for multi-point network addressing
• Standard 1-Wire interface

• Smart wearables
• Medical electronics
• Cold chain logistics & warehousing
• Smart home
• Thermal/gas/water meters