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PCT2075

NXP
Part Number PCT2075
Manufacturer NXP
Description digital temperature sensor
Published Aug 25, 2014
Detailed Description PCT2075 I2C-bus Fm+, 1 °C accuracy, digital temperature sensor and thermal watchdog Rev. 10.1 — 15 September 2021 Pr...
Datasheet PDF File PCT2075 PDF File

PCT2075
PCT2075


Overview
PCT2075 I2C-bus Fm+, 1 °C accuracy, digital temperature sensor and thermal watchdog Rev.
10.
1 — 15 September 2021 Product data sheet 1 General description The PCT2075 is a temperature-to-digital converter featuring ±1 °C accuracy over -25 °C to +100 °C range.
It uses an on-chip band gap temperature sensor and Sigma-Delta Ato-D conversion technique with an overtemperature detection output that is a drop-in replacement for other LM75 series thermal sensors.
The device contains a number of data registers: Configuration register (Conf) to store the device settings such as device operation mode, OS operation mode, OS polarity and OS fault queue; temperature register (Temp) to store the digital temp reading, set-point registers (Tos and Thyst) to store programmable overtemperature shutdown and hysteresis limits, and programmable temperature sensor sampling time Tidle, that can be communicated by a controller via the 2-wire serial I2C-bus Fast-mode Plus interface.
The PCT2075 also includes an open-drain output (OS) which becomes active when the temperature exceeds the programmed limits.
The OS output operates in either of two selectable modes: OS comparator mode or OS interrupt mode.
Its active state can be selected as either HIGH or LOW.
The fault queue that defines the number of consecutive faults in order to activate the OS output is programmable as well as the set-point limits.
The PCT2075 can be configured for different operation conditions.
It can be set in normal mode to periodically monitor the ambient temperature, or in shut-down mode to minimize power consumption.
The temperature register always stores an 11-bit two’s complement data, giving a temperature resolution of 0.
125 °C.
This high temperature resolution is particularly useful in applications of measuring precisely the thermal drift or runaway.
When the device is accessed the conversion in process is not interrupted (that is, the I2C-bus section is totally independent of the Sigma-Delta converter sect...


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