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LM74CIBP-5 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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LM74CIBP-5 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 15 page  LM74 SPI/MICROWIRE™ 12-Bit Plus Sign Temperature Sensor General Description The LM74 is a temperature sensor, Delta-Sigma analog-to- digital converter with an SPI and MICROWIRE compatible interface. The host can query the LM74 at any time to read temperature. A shutdown mode decreases power consump- tion to less than 10 µA. This mode is useful in systems where low average power consumption is critical. The LM74 has 12-bit plus sign temperature resolution (0.0625˚C per LSB) while operating over a temperature range of −55˚C to +150˚C. The LM74’s 3.0V to 5.5V supply voltage range, low supply current and simple SPI interface make it ideal for a wide range of applications. These include thermal management and protection applications in hard disk drives, printers, elec- tronic test equipment, and office electronics. The LM74 is available in the SO-8 package as well as an 5-Bump micro SMD package. Applications n System Thermal Management n Personal Computers n Disk Drives n Office Electronics n Electronic Test Equipment Features n 0.0625˚C temperature resolution. n Shutdown mode conserves power between temperature reading n SPI and MICROWIRE Bus interface n 5-Bump micro SMD package saves space Key Specifications j Supply Voltage 3.0V or 2.65V to 5.5V j Supply Current operating 265µA (typ) 520µA (max) shutdown 3µA (typ) j Temperature Accuracy −10˚C to 65˚C ±1.25˚C(max) −25˚C to 110˚C ±2.1˚C(max) −55˚C to 125˚C ±3˚C(max) Simplified Block Diagram 10090901 MICROWIRE® is a registered trademark of National Semiconductor Corporation. TRI-STATE® is a registered trademark of National Semiconductor Corporation. May 2005 © 2005 National Semiconductor Corporation DS100909 www.national.com |
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