The LM74 is a temperature sensor, Delta-Sigma analog-to-digital converter with an SPI and MICROWIRE compatible interface. It has 12-bit plus sign temperature resolution and operates over a temperature range of -55°C to +150°C. The LM74's low supply current and simple SPI interface make it ideal for a wide range of applications, including thermal management and protection applications in hard disk drives, printers, electronic test equipment, and office electronics.
The LM74 is a Delta-Sigma analog-to-digital converter designed as a temperature sensor. It features an SPI and MICROWIRE compatible interface that allows the host to query the device at any time to read temperature data. The device includes a shutdown mode to reduce power consumption to less than 10 µA, making it suitable for low-power applications.
| Supply Voltage Range (LM74CIM) | 3.0V to 5.5V |
|---|---|
| Supply Voltage Range (LM74CIBP) | 2.65V to 5.5V |
| Temperature Resolution | 12-bit (0.0625°C per LSB) |
| Operating Temperature Range | -55°C to +150°C |
| Shutdown Mode Current (Typical) | < 10 µA |
The device has a 12-bit plus sign temperature resolution, which corresponds to 0.0625°C per LSB.
It is available in the SO-8 package as well as a 5-Bump microSMD package.