Digital Temperature Sensors

ZS18B20A (12-Bit Digital Temperature Sensor IC)

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.
• 12-bit temperature resolution: 0.0625°C per increment.
• Fast temperature conversion: 40 ms conversion time.
• Ultra-low power consumption: Peak current consumption as low as 30 µA.
• Standard 1-Wire interface: Supports distributed, multipoint temperature monitoring using a single microcontroller GPIO pin.
• Unique 64-bit identification: Each sensor has an individual 64-bit serial number for identification in multi-sensor networks.
• Programmable temperature alarms: User-configurable high and low temperature thresholds (TH and TL).
• Nonvolatile memory: Stores sensor identification, alarm thresholds, calibration correction values, and user-defined information.
• DS18B20 compatibility: Compatible with most DS18B20 communication timing and software implementations.
• Pin-compatible replacement: TO-92 package with the same pin configuration as the DS18B20.

Additional Details

The ZS18B20A is a high-precision, low-power digital temperature sensor IC designed for industrial monitoring, distributed temperature measurement, and embedded electronic applications.

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 is factory-tested and calibrated, with internal compensation calculations automatically correcting temperature measurement errors. This eliminates the need for additional user calibration.

The ZS18B20A features a standard 1-Wire digital communication interface, allowing multiple sensors to communicate over a shared data bus. Sensor identification, temperature readings, memory access, and configuration are handled through digital commands, requiring only a single GPIO pin on the host microcontroller.

Each chip includes a unique 64-bit identification number and built-in nonvolatile 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 ZS18B20A supports most DS18B20 communication timing requirements and can generally be integrated into existing DS18B20 software with minimal modification. Its TO-92 package uses the same pin configuration, enabling pin-for-pin hardware replacement.

With its fast 40 ms temperature conversion time, 12-bit resolution, and ultra-low peak current consumption of 30 µA, the ZS18B20A is suitable for industrial monitoring systems, smart hardware, agricultural monitoring, instrumentation, and other distributed temperature-sensing applications.

Technical Specifications

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

Temperature conversion time

40 ms

Operating voltage

1.8–5.5 V DC

Peak current consumption

30 µA

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 memory

Package

TO-92

Pin configuration

GND, DQ, VDD

DS18B20 compatibility

Timing-compatible with most implementations; pin-compatible TO-92 replacement

Factory calibration

100% tested and calibrated

ZS18B20B (12-Bit Digital Temperature Sensor IC)

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.
• 12-bit temperature resolution: 0.0625°C per increment.
• Fast temperature conversion: 500 ms conversion time.
• 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 multi-sensor networks.
• Programmable temperature alarms: User-configurable high and low temperature thresholds (TH and TL).
• Standard 1-Wire interface: Supports distributed, multipoint temperature monitoring using a single microcontroller GPIO pin.
• 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 ZS18B20B is a high-precision digital temperature sensor IC designed for industrial monitoring, distributed temperature measurement, and embedded electronic applications.

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 factory testing and calibration, with internal compensation calculations automatically correcting temperature measurement errors. This eliminates the need for additional user calibration.

The ZS18B20B features a standard 1-Wire digital communication interface, allowing multiple sensors to communicate over a shared data bus. Sensor identification, temperature readings, memory access, and configuration are handled 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 ZS18B20B 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 500 ms temperature conversion time, 12-bit resolution, and 2.5–5.5 V operating voltage range, the ZS18B20B is suitable for industrial monitoring systems, smart hardware, agricultural monitoring, instrumentation, and other distributed temperature-sensing applications.

Technical Specifications

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

Temperature conversion time

500 ms

Operating voltage

2.5–5.5 V DC

Communication interface

1-Wire digital bus

Unique sensor identification

64-bit serial number

Temperature alarm thresholds

Programmable TH and TL

Memory

Nonvolatile EEPROM

Package

TO-92

Pin configuration

GND, DQ, VDD

DS18B20 compatibility

Nearly fully timing-compatible; pin-compatible TO-92 replacement

Factory calibration

100% tested and calibrated

ZS18B20C (12-Bit Digital Temperature Sensor IC with Parasite Power Support)

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