ZS18B20C (12-Bit Digital Temperature Sensor IC with Parasite Power Support)
Digital temperature sensor chip Key specs: ±0.5°C accuracy, -55°C to +125°C range, 2.5-5.5V, 2-wire parasitic-power support Category: Digital Temperature Sensor Chips
Product details
Key Features
- High measurement accuracy: ±0.5°C from -10°C to +85°C, with no user calibration required.
- Wide temperature measurement range: -55°C to +125°C.
- Wide operating voltage range: 2.5–5.5 V DC.
- Two-wire parasite power support: Allows operation without a separate external power supply wire.
- 12-bit temperature resolution: 0.0625°C per increment.
- Dedicated EEPROM memory: Nonvolatile storage for sensor configuration, calibration correction values, and user-defined information.
- Unique 64-bit identification: Each sensor has an individual 64-bit serial number for identification in multipoint sensor networks.
- Programmable temperature alarms: User-configurable high and low temperature thresholds (TH and TL).
- Standard 1-Wire interface: Supports distributed temperature monitoring using a single microcontroller GPIO pin.
- Factory-calibrated accuracy: Each sensor undergoes factory testing and calibration, with internal temperature error compensation.
- DS18B20 compatibility: Compatible with nearly all standard DS18B20 communication timing requirements and software implementations.
- Pin-compatible replacement: TO-92 package with the same pin configuration as the DS18B20.
Additional Details
The ZS18B20C is a high-precision, 12-bit digital temperature sensor IC designed for industrial monitoring, distributed temperature measurement, and embedded electronic applications requiring flexible power configurations.
Combining analog temperature sensing with digital signal processing, the sensor provides an accuracy of ±0.5°C across the -10°C to +85°C range, with an overall measurement range of -55°C to +125°C.
Each sensor undergoes 100% factory testing and calibration. Internal compensation calculations automatically correct temperature measurement errors, eliminating the need for additional user calibration.
A distinguishing feature of the ZS18B20C is its support for two-wire parasite-power operation, allowing the sensor to draw power through its data connection rather than requiring a dedicated external power supply wire. This simplifies wiring and installation in distributed sensor networks.
The sensor uses a standard 1-Wire digital communication interface, enabling multiple sensors to communicate over a shared data bus. Sensor identification, temperature readings, memory access, and configuration are managed through digital commands, requiring only a single GPIO pin on the host microcontroller.
Each chip includes a unique 64-bit identification number and dedicated nonvolatile EEPROM memory for storing temperature alarm thresholds, calibration correction values, and user-defined information such as sensor node numbers and installation locations.
Designed for compatibility with existing DS18B20 systems, the ZS18B20C supports nearly all standard DS18B20 communication timing requirements and can generally be integrated into existing DS18B20 software without modification. Its TO-92 package uses the same pin configuration, enabling pin-for-pin hardware replacement.
With its parasite-power capability, 12-bit resolution, and wide operating temperature range, the ZS18B20C is suitable for industrial monitoring systems, multipoint temperature cables, agricultural monitoring, instrumentation, and other distributed temperature-sensing applications.
Technical Specifications
| Product model | ZS18B20C |
|---|---|
| Product type | Digital temperature sensor IC |
| Temperature measurement range | -55°C to +125°C |
| Temperature accuracy | ±0.5°C (-10°C to +85°C) |
| ADC resolution | 12-bit |
| Temperature resolution | 0.0625°C |
| Operating voltage | 2.5–5.5 V DC |
| Communication interface | 1-Wire digital bus |
| Parasite power mode | Supported (2-wire operation) |
| Unique sensor identification | 64-bit serial number |
| Temperature alarm thresholds | Programmable TH and TL |
| Memory | Nonvolatile EEPROM |
| Package | TO-92 |
| Pin configuration | DS18B20-compatible |
| DS18B20 compatibility | Nearly fully timing-compatible; pin-compatible TO-92 replacement |
| Factory calibration | 100% tested and calibrated |
| Temperature conversion time | Not specified |