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Texas Instruments TMP1827 Digital Temperature Sensor

Texas Instruments TMP1827 Digital Temperature Sensor is a high-accuracy, 1-Wire compatible digital output temperature sensor with integrated 2Kb EEPROM. The device also includes an SHA-256-HMAC authentication scheme and a wide operating temperature range from –55°C to +150°C. The TMP1827 provides a high accuracy of ±0.1°C (typical)/±0.2°C (maximum) across the temperature range of +10°C to +45°C. Each device has a factory-programmed 64-bit unique identification number for addressing and NIST traceability. The Texas Instruments TMP1827 supports standard speeds for legacy applications and overdrive mode with a 90kbps data rate for low latency communication across a wide voltage range of 1.7V to 5.5V.

In the simplest mode of operation, the TMP1827 1-Wire interface, with an integrated 8kV IEC-61000-4-2 ESD protection on the data pin, requires only a single connection and a ground return in bus-powered mode, which simplifies and reduces cost by reducing the number of wires and external protection components. The V_DD power pin is also available for applications that may want a dedicated power supply.

Features

1-Wire interface with multi-drop shared bus and cyclic redundancy check (CRC)
1.7V to 5.5V bus powered with operating voltage
IEC 61000-4-2 ESD for 8kV contact discharge
Functional Safety-Capable
- Documentation available to aid functional safety system design
High-accuracy digital temperature sensor
- TMP1827
  - ±0.2°C (maximum) from +10°C to +45°C
  - ±0.3°C (maximum) from –40°C to +105°C
  - ±0.4°C (maximum) from –55°C to +150°C
- TMP1827N
  - ±0.9°C (maximum) from –55°C to +150°C
94µA temperature measurement current
1.3µA shutdown current
7.8125m°C (1LSB) 16-bit temperature resolution

Fast data rates of 90kbps in overdrive speed
Flexible user-programmable short address modes for faster device address
SHA-256-HMAC authentication scheme
- FIPS 180-4 compliant Secure Hash Implementation
- FIPS 198-1 compliant HMAC Implementation
2Kb EEPROM features
- Write operation in 64-bit block size
- Continuous read mode
- Read with write protection with 256-bit page size
- Authenticated write protection mode with 256-bit page size
- 178 µA programming current
NIST traceable factory-programmed non-erasable 64-bit identification number for device addressing
Four configurable open-drain digital input-output and temperature alert

Applications

Factory automation and control
Appliances
Medical accessories
CPAP machines
Battery charger ICs

EV charging infrastructure
LED lighting
Temperature transmitters
Cold chain

Texas Instruments TMP1827 Digital Temperature Sensor

Features

Applications

Functional Block Diagram

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