Overview
The LM75AD,118 is a digital temperature sensor and thermal watchdog developed by NXP Semiconductors. This device utilizes an on-chip band gap temperature sensor and Sigma-delta A-to-D conversion technique to provide accurate temperature measurements. It features a 2-wire serial I2C-bus interface, allowing for easy communication with a controller. The LM75AD,118 is designed to operate in a wide temperature range and offers various programmable settings, making it versatile for different applications.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 8-Pin SO (Small Outline) |
| Mounting Type | Surface Mount |
| Supply Voltage Range | 2.8 V to 5.5 V |
| Operating Temperature Range | -55 °C to +125 °C |
| Temperature Resolution | 0.125 °C (11-bit ADC) |
| Temperature Accuracy | ±2 °C from -25 °C to +100 °C, ±3 °C from -55 °C to +125 °C |
| Interface | 2-Wire Serial I2C-bus |
| Address Pins | Three selectable logic address pins |
| Overtemperature Detection | Programmable temperature threshold and hysteresis set points |
| Power Consumption in Shutdown Mode | 3.5 µA |
| ESD Protection | Exceeds 2000 V HBM, 200 V MM, 1000 V CDM |
Key Features
- High temperature resolution of 0.125 °C using an 11-bit ADC
- Programmable temperature threshold and hysteresis set points
- 2-wire serial I2C-bus interface with up to 8 devices on the same bus
- Small 8-pin package types: SO8 and TSSOP8
- Stand-alone operation as a thermostat with predefined temperature set points
- Low power consumption with 3.5 µA in shutdown mode
- ESD protection exceeding 2000 V HBM, 200 V MM, and 1000 V CDM
- Open-drain output for overtemperature detection
- Configurable OS output mode (comparator or interrupt mode)
Applications
- System thermal management
- Personal computers
- Electronics equipment
- Industrial controllers
Q & A
- What is the temperature resolution of the LM75AD,118?
The temperature resolution of the LM75AD,118 is 0.125 °C, achieved through an 11-bit ADC.
- What is the operating temperature range of the LM75AD,118?
The operating temperature range is from -55 °C to +125 °C.
- What type of interface does the LM75AD,118 use?
The device uses a 2-wire serial I2C-bus interface.
- How many devices can be connected on the same I2C bus?
Up to 8 devices can be connected on the same bus without address conflict.
- What is the power consumption in shutdown mode?
The power consumption in shutdown mode is 3.5 µA.
- Does the LM75AD,118 have ESD protection?
- Can the LM75AD,118 operate as a stand-alone thermostat?
- What is the supply voltage range for the LM75AD,118?
The supply voltage range is from 2.8 V to 5.5 V.
- What types of packages are available for the LM75AD,118?
The device is available in 8-pin SO (Small Outline) and TSSOP8 packages.
- Is the LM75AD,118 compliant with any specific standards?
