LM95172-Q1中文资料德州仪器数据手册PDF规格书

1FEATURES

2• LM95172EWG is AEC-Q100 Grade 0 Qualified

and is Manufactured on an Automotive Grade

Flow.

• 13-Bit (0.0625°C LSB) to 16-Bit (0.0078125°C

LSB) Temperature Resolution

• Wide −40°C to +200°C Temperature Range

• 35 ms Best Conversion Time Tracks Fast

Temp Changes

• OVERTEMP Digital Output Switches

when TDIE > THIGH

• Shutdown Mode Saves Power yet Wakes up

for One-Shot Temperature Update

• SPI and MICROWIRE Bus Interface

• 10-Pin Cerpack High-Temperature Ceramic

Package

APPLICATIONS

• Automotive High Temperature Applications

• Industrial Power Controllers

• Industrial Motors, Gear Boxes

• Geothermal Instrumentation

• High Temperature Test Equipment

KEY SPECIFICATIONS

• Analog and Digital Supply Voltage 3.0V to 5.5V

• Total Supply Current Operating 400 μA

(typ)

– Shutdown −40°C to +140°C 4 μA (max)

– Shutdown −40°C to +175°C 12 μA (max)

– Shutdown −40°C to +200°C 28 μA (max)

• Temperature Accuracy

– +175°C to +200°C ±3.0°C (max)

– +130°C to +160°C ±1.0°C (max)

– +120°C to +130°C ±2.0°C (max)

– +160°C to +175°C ±2.0°C (max)

– −40°C to +120°C ±3.5°C (max)

• Temperature Resolution

– 13-bit mode 0.0625°C/LSB

– 16-bit mode 0.0078125°C/LSB

• Conversion Time

– 13-bit mode 43 ms (max)

– 16-bit mode 350 ms (max)

DESCRIPTION

The LM95172EWG is an integrated digital-output

temperature sensor with a Serial Peripheral Interface

(SPI) and MICROWIRE™-compatible interface in a

10-pin Cerpack high temperature ceramic package. It

features a very linear Sigma-Delta Analog-to-Digital

Converter (ADC), high accuracy, fast conversion

rates, and extremely low output noise. With an

operating temperature as low as -40°C and optimized

accuracy from 120°C to 200°C, it is ideal for high-

temperature applications.

The over-temperature alarm output (OVERTEMP)

asserts when the die temperature exceeds a

programmed THIGH limit. The user-programmed TLOW

limit creates a temperature-stabilizing hysteresis

when the ambient temperature is near the trip point.

The LM95172EWG can be programmed to operate

from 13 bits (0.0625°C per LSB) to 16 bits

(0.0078125°C per LSB) resolution. The

LM95172EWG powers up in 35 ms, the fastest

conversion time, with temperature output set at 13-bit

resolution. The resolution may then be changed to

14-, 15- or 16-bits. When in the 13-, 14- or 15-bit

resolution mode, the least significant bit in the 16-bit

temperature register toggles after the completion of

each conversion. This bit may be monitored to verify

that the conversion is complete.

The high noise immunity of the Serial I/O (SI/O)

output makes the LM95172EWG ideal for use in

challenging electromagnetic environments.