Overview
The LM95235QEIMM-NS is a precision remote diode temperature sensor produced by Texas Instruments, although it was originally developed by National Semiconductor before the company was acquired by Texas Instruments. This device is designed to accurately monitor the temperature of both remote diodes and its own local temperature. It features a 2-wire System Management Bus (SMBus) interface and utilizes TruTherm technology for enhanced accuracy. The LM95235QEIMM-NS is particularly suited for automotive applications, being 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 | TA = 25°C to 85°C; TD = 60°C to 100°C, ±0.75 °C (max) TA = 25°C to 90°C; TD = 40°C to 125°C, ±1.5 °C (max) |
| Local Temperature Accuracy | TA = 25°C to 100°C, ±2.0 °C (max) |
| Conversion Rate, Both Channels | 16 to 0.4 Hz |
| Package Type | 8-Pin VSSOP |
| Interface | SMBus 2.0 Compatible |
| Temperature Range | -128°C to 127.875°C and 0°C to 255.875°C |
Key Features
- Remote and Local Temperature Channels
- TruTherm BJT Beta Compensation Technology for accurate temperature sensing
- Diode Model Selection Bit - MMBT3904 or 65/90-nm Processor Diodes
- Digital Filter for Remote Channel
- Programmable TCRIT and OS Thresholds
- Programmable Shared Hysteresis Register
- Diode Fault Detection
- Mask, Offset, and Status Registers
- Three-Level Address Pin
- Standby Mode One-Shot Conversion Control
- Pin-for-Pin Compatible With the LM86 and LM89
Applications
The LM95235QEIMM-NS is widely used in various applications, including:
- Automotive systems: Due to its AEC-Q100 Grade 3 compliance, it is suitable for monitoring temperatures in automotive environments.
- Microprocessor and graphics processor temperature monitoring: It can accurately monitor the temperature of external devices such as microprocessors and graphics processors.
- Industrial and embedded systems: Its precision and reliability make it a good choice for industrial and embedded system applications.
Q & A
- What is the supply voltage range for the LM95235QEIMM-NS?
The supply voltage range is 3.0 to 3.6 V.
- What is the typical supply current at a conversion rate of 1 Hz?
The typical supply current is 350 µA.
- What is the accuracy of the remote diode temperature measurement?
The accuracy is ±0.75 °C (max) for TA = 25°C to 85°C and TD = 60°C to 100°C, and ±1.5 °C (max) for TA = 25°C to 90°C and TD = 40°C to 125°C.
- What is the local temperature accuracy?
The local temperature accuracy is ±2.0 °C (max) for TA = 25°C to 100°C.
- What are the supported temperature ranges?
The device supports temperature ranges of -128°C to 127.875°C and 0°C to 255.875°C.
- What interface does the LM95235QEIMM-NS use?
The device uses an SMBus 2.0 compatible interface.
- Is the LM95235QEIMM-NS AEC-Q100 compliant?
- What package type is the LM95235QEIMM-NS available in?
- Can the LM95235QEIMM-NS detect diode faults?
- Is the LM95235QEIMM-NS pin-for-pin compatible with other models?
