1FEATURES
2• 0.25°C Temperature Resolution.
• Shutdown Mode Conserves Power Between
Temperature Reading
• SPI and MICROWIRE Bus Interface
• VSSOP-8 and WSON-8 Packages Save Space
• UL Recognized Component

APPLICATIONS
• System Thermal Management
• Personal Computers
• Disk Drives
• Office Electronics
• Electronic Test Equipment

KEY SPECIFICATIONS
• Supply Voltage 2.65V to 5.5V
• Supply Current
– Operating
– 260 μA (typ)
– 490 μA (max)
– Shutdown
– 12 μA (typ)
• Temperature Accuracy
– −40°C to 85°C, ±2°C(max)
– −10°C to 65°C, +1.5/−2°C(max)
– −55°C to 125°C, +3/−2°C(max)
– −55°C to 150°C, +3.5/−2°C(max)

DESCRIPTION
The LM70 is a temperature sensor, Delta-Sigma analog-to-digital converter with an SPI and
MICROWIRE compatible interface available in WSON
and VSSOP 8-pin packages. The host can query the
LM70 at any time to read temperature. A shutdown
mode decreases power consumption to less than 10 μA. This mode is useful in systems where low
average power consumption is critical.
The LM70 has 10-bit plus sign temperature resolution
(0.25°C per LSB) while operating over 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 applications in
hard disk drives, printers, electronic test equipment, and office electronics.