peculiarity
Temperature resolution 0.25°C.
Shutdown mode saves power between temperature readings
SPI and Microwire bus interface
The MSOP-8 and LLP-8 packages save space
UL certified components
illustrate
The LM70 is a temperature sensor, Delta-Sigma analog-to-digital converter with an SPI and MICROWIRE-compatible interface LLP and MSOP 8-pin package. The host can query the LM70 to read the temperature at any time in shutdown mode, reducing power consumption by less than 10μA. This mode is very useful in systems where low average power consumption is critical.
The LM70 has a temperature range of 10 bits plus signed (0.25°C per LSB) when operating in a temperature range of -55°C to +150°C.
The LM70's 2.65V 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 of hard disk drives, printers, electronic test equipment, and office electronics applications.
Main specifications
Supply voltage 2.65V to 5.5V
Supply Current Operating 260μA (typical)
490μA Max
Shutdown 12μA (typical)
Temperature control accuracy -40 °C to 85 °C ± 2 °C (max.)
-10°C to 65°C 1.5/-2°C (max.)
-55°C to 125°C3/-2°C (max.)
-55°C to 150°C 3.5/-2°C (max.)
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System thermal management
personal computer
disk drive
Office electronics
Electronic test equipment