Part # LM74A datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM74A SPI MICROWIRE™ 12-Bit Plus Sign Temperature Sensor (LM74 in Die Form)

Part Details:

LM74A November 2004 SPI/MICROWIRE LM74ASPI/MICROWIRETM 12-Bit Plus Sign Temperature Sensor(LM74 in Die Form)General Description Applications The LM74A is a temperature sensor, Delta-Sigma analog-to- n System Thermal Management digital converter with an SPI and MICROWIRE compatible n Personal Computers interface in die form. The host can query the LM74A at any n Disk Drives 12-Bit time to read temperature. A shutdown mode decreases n Office Electronics power consumption to less than 10 µA. This mode is useful n Electronic Test Equipment in systems where low average power consumption is critical. This particular data sheet applies to the LM74 in die form. Features The LM74 is available in the SO-8 package as well as an Plus 5-Bump micro SMD package please refer to LM74 data n 0.0625°C temperature resolution. sheet for detailed specifictions pertaining to the packaged n Shutdown mode conserves power between temperature parts. reading Sign The LM74A has 12-bit plus sign temperature resolution n SPI and MICROWIRE Bus interface (0.0625°C per LSB) while operating over a temperature n LM74 is also available in a 5-Bump micro SMD and range of -40°C to +150°C. The LM74A-5 MDA accuracy of 8-pin MSOP ±3.5°C is specified over a temperature range of 0°C to Temperature +150°C. Key Specifications The LM74A s 4.5V to 5.5V or 3.0V to 3.6V supply voltage j Supply Voltage LM74A-5 4.5V to 5.5V range, low supply current and simple SPI interface make itideal for a wide range of applications. These include thermal LM74A-3 3.0V to 3.6V management and protection applications in hard disk drives, j Supply Current operating 310µA (typ) printers, electronic test equipment, and office electronics. 520µA (max) shutdown 8µA (typ) j LM74A-5 MDA 0°C to 140°C

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LM74A.pdf Datasheet