Product
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LM71-Q1
  • LM71-Q1
  • LM71-Q1
  • LM71-Q1

LM71-Q1

ACTIVE

Automotive Grade, ±1.5°C Temperature Sensor with SPI Interface

Texas Instruments LM71-Q1 Product Info

1 April 2026 1

Parameters

Local sensor accuracy (max)

1.5

Type

Local

Operating temperature range (°C)

-40 to 150

Supply voltage (min) (V)

2.65

Interface type

SPI

Supply voltage (max) (V)

5.5

Supply current (max) (µA)

550

Temp resolution (max) (bps)

14

Remote channels (#)

0

Rating

Automotive

TI functional safety category

Functional Safety-Capable

Package

SOT-23 (DBV)-5-8.12 mm² 2.9 x 2.8

Features

  • LM71Q is AEC-Q100 Grade 0 Qualified and is Manufactured on an Automotive Grade Flow
  • 5-Pin SOT-23 Package or 6-Pin No-Pull-Back WSON Package
  • Operates Over a Full −40°C to +150°C Range
  • SPI and MICROWIRE Bus Interface
  • Key Specifications:
    • Supply Voltage: 2.65V to 5.5V
    • Supply Current
      • Operating: 300 µA (typ)
      • 550 µA (max)
    • Temperature Accuracy
      • −10°C to +65°C: ±1.5°C (max)
      • −40°C to 150°C: +3/− 2°C (max)
    • Temperature Resolution: 31.25 m°C
  • LM71Q is AEC-Q100 Grade 0 Qualified and is Manufactured on an Automotive Grade Flow
  • 5-Pin SOT-23 Package or 6-Pin No-Pull-Back WSON Package
  • Operates Over a Full −40°C to +150°C Range
  • SPI and MICROWIRE Bus Interface
  • Key Specifications:
    • Supply Voltage: 2.65V to 5.5V
    • Supply Current
      • Operating: 300 µA (typ)
      • 550 µA (max)
    • Temperature Accuracy
      • −10°C to +65°C: ±1.5°C (max)
      • −40°C to 150°C: +3/− 2°C (max)
    • Temperature Resolution: 31.25 m°C

Description

The LM71 is a low-power, high-resolution digital temperature sensor with an SPI and MICROWIRE compatible interface, available in the 5-pin SOT-23 or the 6-pin WSON (no pull back) package. The host can query the LM71 at any time to read temperature. Its low operating current is useful in systems where low power consumption is critical.

The LM71 has 13-bit plus sign temperature resolution (0.03125°C per LSB) while operating over a temperature range of −40°C to +150°C.

The LM71’s 2.65V to 5.5V supply voltage range, fast conversion rate, low supply current, and simple SPI interface make it ideal for a wide range of applications. The LM71Q is available in the 5-lead SOT-23 package only.

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