Overview
The PCT2075DP,118, produced by NXP USA Inc., is a high-accuracy digital temperature sensor and thermal watchdog. This device features an on-chip band gap temperature sensor and utilizes Sigma-Delta A-to-D conversion, providing a temperature accuracy of ±1 °C over the range of -25 °C to +100 °C. It is designed to be a drop-in replacement for other LM75 series thermal sensors and supports the I2C-bus Fast-mode Plus interface. The PCT2075DP,118 is versatile, offering various operation modes and programmable temperature thresholds, making it suitable for a wide range of applications requiring precise temperature monitoring.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TSSOP8 |
| Operating Temperature Range | -55 °C to +125 °C |
| Accuracy | ±1 °C (-25 °C to +100 °C) |
| Resolution | 0.125 °C (11-bit two’s complement data) |
| Supply Voltage | 2.7 V to 5.5 V |
| Interface | I2C-bus Fast-mode Plus |
| Pin Count | 8 |
| Mounting Type | Surface Mount |
| RoHS Status | RoHS Compliant |
Key Features
- High accuracy: ±1 °C over -25 °C to +100 °C range.
- Resolution of 0.125 °C with 11-bit two’s complement data.
- I2C-bus Fast-mode Plus interface for communication.
- Programmable overtemperature shutdown and hysteresis limits.
- Open-drain output (OS) for overtemperature detection.
- Supports normal and shutdown operation modes to minimize power consumption.
- Pin-for-pin replacement for LM75 series with support for up to 27 devices on the same bus.
- SDA and SCL inputs are overvoltage tolerant to 5.5 V.
Applications
The PCT2075DP,118 is suitable for various applications requiring precise temperature monitoring, such as:
- Industrial automation and control systems.
- Consumer electronics, including smartphones and laptops.
- Automotive systems, particularly in engine and battery management.
- Medical devices that require accurate temperature sensing.
- Data centers and server rooms for thermal management.
Q & A
- What is the accuracy of the PCT2075DP,118 temperature sensor?
The PCT2075DP,118 has an accuracy of ±1 °C over the range of -25 °C to +100 °C. - What is the resolution of the temperature readings?
The resolution is 0.125 °C, provided by an 11-bit two’s complement data format. - What interface does the PCT2075DP,118 use for communication?
The device uses the I2C-bus Fast-mode Plus interface. - Can the overtemperature shutdown and hysteresis limits be programmed?
Yes, these limits are programmable. - What are the operating voltage and temperature ranges of the PCT2075DP,118?
The operating voltage range is 2.7 V to 5.5 V, and the operating temperature range is -55 °C to +125 °C. - Is the PCT2075DP,118 RoHS compliant?
Yes, it is RoHS compliant. - Can multiple PCT2075DP,118 devices be connected on the same bus?
Yes, up to 27 devices can be connected on the same bus without address conflict. - What are the typical applications of the PCT2075DP,118?
It is used in industrial automation, consumer electronics, automotive systems, medical devices, and data centers. - How does the device handle power consumption?
The device can be set in normal or shutdown mode to minimize power consumption. - What is the purpose of the OS output?
The OS output is an open-drain output that becomes active when the temperature exceeds the programmed limits.
