San Jose, Calif. -- Atmel Corporation has claimed the industry's first family of high-precision digital temperature sensors with the widest Vcc range from 1.7 V to 5.5 V. Delivering higher temperature accuracy and faster I2C bus communication speeds, the new devices are available with integrated nonvolatile registers and serial EEPROM memory making them suitable for consumer, industrial, computer, and medical applications.
The wide Vcc range allows customers to purchase one device to cover all of their Vcc requirements in a variety of applications, reducing their overall bill of materials, said Atmel. “Currently, digital temperature sensors on the market are available with a very limited Vcc range requiring customers to purchase multiple temperature sensors in their overall bill of materials (BOM) and utilizing multiple devices to cover the different voltage ranges across various applications,” according to the company.
Key features include a higher accuracy rate of +/-0.5°C accuracy (typical) across the 0°C to +85°C temperature range and the wide voltage range, and faster I2C bus communication with speeds of up to 1 MHz. The low voltage operation of the devices reduce the overall power consumption in applications such as portable handheld consumer devices, enabling longer battery life, said Atmel.
The temperature sensor family includes six high-precision, digital temperature sensors based on the industry-standard LM75 functionality offered by a number of vendors. The highly configurable devices accurately measure and monitor temperature to address the thermal monitoring requirements for a wide variety of applications.
The base part numbers include AT30TSE752A, AT30TSE754A or AT30TSE758A. The devices include serial EEPROM memory from 2K-, 4K- or 8K-bits to store system parameters and user preference data. Users also can access the EEPROM, which is fully functional and drop-in compatible with industry-standard I2C serial EEPROMs. This integration reduces overall system cost by replacing the stand-alone serial EEPROM, and eliminating other associated costs of the circuit board components. In addition, the integrated nonvolatile register feature allows user-configured settings to be retained across power cycles to simplify the system design, reduce processor start-up code, improve reliability, and ensure proper operation, said Atmel.
Availability: Available now, the new temperature sensor family includes the AT30TS74, AT30TS75A, AT30TS750A, AT30TSE752A, AT30TSE754A, and the AT30TSE758A and replaces the existing AT30TS75, AT30TS750, AT30TSE752, AT30TSE754, and the AT30TSE758 devices.
Pricing: Starts at $0.32 for the AT30TS74 in quantities of 5,000.
Resources: Digital temp sensors