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.