LM70 ±2°C  Temperature Sensor with SPI Interface | TI.com

This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
±2°C  Temperature Sensor with SPI Interface



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.


  • 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

Key Specifications

  • Supply Voltage 2.65V to 5.5V
  • Supply Current
    • Operating260 μA (typ)490 μA (max)
    • Shutdown12 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)

All trademarks are the property of their respective owners.


Compare all products in Digital temperature sensors Email Download to Excel
Part number Order Device type Interface Local sensor accuracy (Max) (+/- C) Temp resolution (Max) (bits) Operating temperature range (C) Supply voltage (Min) (V) Supply voltage (Max) (V) Supply current (Max) (uA) Features Remote channels (#) Addresses Rating Package Group Package size: mm2:W x L (PKG) Approx. price (US$)
LM70 Order now Local     SPI, Microwire     2     11     -55 to 150     2.65     5.5     490     UL recognized     0         Catalog     VSSOP | 8
WSON | 8    
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)
8WSON: 9 mm2: 3 x 3 (WSON | 8)    
0.85 | 1ku