LM95235QEIMMX/NOPB
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Texas Instruments LM95235QEIMMX/NOPB

Manufacturer No:
LM95235QEIMMX/NOPB
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
SENSOR DIGITAL -40C-85C 8VSSOP
Delivery:
Payment:
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Product Introduction

Overview

The LM95235QEIMMX/NOPB, produced by Texas Instruments, is a precision remote diode temperature sensor equipped with an SMBus 2.0 compatible interface and TruTherm BJT beta compensation technology. This 11-bit digital temperature sensor is designed to monitor both remote and local temperatures with high accuracy. It is particularly useful for monitoring the temperature of external devices such as microprocessors, graphics processors, or diode-connected transistors like the MMBT3904. The LM95235QEIMMX/NOPB is also available in an automotive-grade version (LM95235Q) that is AEC-Q100 Grade 3 compliant and manufactured on an Automotive Grade Flow.

Key Specifications

Parameter Value
Supply Voltage 3.0 to 3.6 V
Supply Current (Conv. Rate = 1 Hz) 350 µA (typ)
Remote Diode Temperature Accuracy T_A = 25°C to 85°C; T_D = 60°C to 100°C, ±0.75 °C (max)
T_A = 25°C to 90°C; T_D = 40°C to 125°C, ±1.5 °C (max)
Local Temperature Accuracy T_A = 25°C to 100°C, ±2.0 °C (max)
Conversion Rate, Both Channels 16 to 0.4 Hz
Resolution 10 bits (Local), 12 bits (Remote)
Package 8-Pin VSSOP
Operating Temperature -40°C to 125°C

Key Features

  • Remote and Local Temperature Channels
  • TruTherm BJT Beta Compensation Technology for accurate thermal diode monitoring
  • Diode Model Selection Bit - MMBT3904 or 65/90-nm Processor Diodes
  • Digital Filter for Remote Channel
  • Programmable T_CRIT and OS Thresholds
  • Programmable Shared Hysteresis Register
  • Diode Fault Detection
  • Mask, Offset, and Status Registers
  • SMBus 2.0 Compatible Interface, Supports TIMEOUT
  • Programmable Conversion Rate for Best Power Consumption
  • Three-Level Address Pin
  • Standby Mode One-Shot Conversion Control
  • Pin-for-Pin Compatible With the LM86 and LM89

Applications

  • Processor/Computer System Thermal Management (e.g., Laptops, Desktops, Workstations, Servers)
  • Electronic Test Equipment and Office Electronics
  • Automotive Applications (LM95235Q is AEC-Q100 Grade 3 Compliant)

Q & A

  1. What is the primary function of the LM95235QEIMMX/NOPB?

    The LM95235QEIMMX/NOPB is a precision remote diode temperature sensor that monitors both remote and local temperatures with high accuracy.

  2. What is TruTherm BJT beta compensation technology?

    TruTherm BJT beta compensation technology allows the LM95235 to precisely monitor thermal diodes found in 90 nm and smaller geometry processes.

  3. What are the supply voltage and current specifications?

    The supply voltage is 3.0 to 3.6 V, and the supply current at a conversion rate of 1 Hz is typically 350 µA.

  4. What is the temperature accuracy for remote and local channels?

    The remote diode temperature accuracy is ±0.75 °C (max) from 25°C to 85°C and ±1.5 °C (max) from 25°C to 90°C. The local temperature accuracy is ±2.0 °C (max) from 25°C to 100°C.

  5. What interface does the LM95235QEIMMX/NOPB use?

    The LM95235QEIMMX/NOPB uses an SMBus 2.0 compatible interface.

  6. What are the programmable features of the LM95235QEIMMX/NOPB?

    The device features programmable T_CRIT and OS thresholds, a shared programmable hysteresis register, and a programmable conversion rate for best power consumption.

  7. Is the LM95235QEIMMX/NOPB suitable for automotive applications?

    Yes, the LM95235Q version is AEC-Q100 Grade 3 compliant and manufactured on an Automotive Grade Flow.

  8. What package types are available for the LM95235QEIMMX/NOPB?

    The device is available in an 8-Pin VSSOP package.

  9. What are the operating temperature ranges for the LM95235QEIMMX/NOPB?

    The operating temperature range is -40°C to 125°C.

  10. Can the LM95235QEIMMX/NOPB detect diode faults?

    Yes, the device includes diode fault detection capabilities.

  11. How can the T_CRIT and OS outputs be used?

    The T_CRIT and OS outputs can be used to shutdown the system, turn on system fans, or as a microcontroller interrupt function.

Product Attributes

Sensor Type:Digital, Local/Remote
Sensing Temperature - Local:-40°C ~ 85°C
Sensing Temperature - Remote:-40°C ~ 85°C
Output Type:SMBus
Voltage - Supply:3V ~ 3.6V
Resolution:10 b (Local), 12 b (Remote)
Features:One-Shot, Output Switch, Programmable Limit, Shutdown Mode, Standby Mode
Accuracy - Highest (Lowest):±2°C (±6°C)
Test Condition:25°C ~ 100°C (-40°C ~ 25°C)
Operating Temperature:-40°C ~ 125°C
Mounting Type:Surface Mount
Package / Case:8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package:8-VSSOP
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