LM74A is a temperature sensor produced by Texas Instruments. It can measure temperatures between -55°C and +150°C with an accuracy of ±3.5°C.
The LM74A is a Delta-Sigma analog-to-digital converter designed as a temperature sensor. It features an SPI and MICROWIRE compatible interface, allowing 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 systems where low average power is critical.
The LM74A offers a temperature resolution of 0.0625°C per LSB and operates over a range of -55°C to +150°C. It is specified for use in thermal management and protection applications within hard disk drives, printers, electronic test equipment, and office electronics. The component is available in a 5-Bump micro SMD package and an 8-pin SOP package.
| Temperature Resolution | 0.0625°C per LSB |
|---|---|
| Operating Temperature Range | -55°C to +150°C |
| Accuracy (0°C to +150°C) | +3.5°C (max) |
| Supply Voltage Range | 4.5V to 5.5V |
| Shutdown Current | 8 µA (typ) |
| Operating Current | 310 µA (typ) |
The LM74A has a temperature resolution of 0.0625°C per LSB.
The device operates over a temperature range of -55°C to +150°C.
Yes, it features an SPI and MICROWIRE compatible interface.