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Texas Instruments TMP102AIDRLR
- Part No.:
- TMP102AIDRLR
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- SOT-563, SOT-666
- Datasheet:
-
TMP102AIDRLR.pdf
- Description:
- SENSOR DIGITAL -40C-125C SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:18,574
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Product details
Overview
TMP102AIDRLR from Texas Instruments is a low-power digital temperature sensor with SMBus/I²C interface in 6-pin SOT563 package, delivering ±0.5°C accuracy from –25°C to 85°C, 12-bit resolution (0.0625°C LSB), and 7.5µA max active current - used for thermal monitoring in battery-powered portable electronics and power-supply management.
For engineers reviewing the TMP102AIDRLR datasheet, TMP102AIDRLR pinout, TMP102AIDRLR application, or TMP102AIDRLR equivalent, this page provides verified technical context, validated pin functions, real-world use-value per application, and two confirmed alternative parts with documented functional and selection differences.
Technical Context
The TMP102AIDRLR integrates a precision diode-based temperature sensor, on-chip 12-bit ADC, and fully compliant SMBus/I²C serial interface supporting up to four devices on one bus. It operates across –40°C to 125°C with NIST-traceable calibration and no external signal conditioning required.
Its architecture includes programmable conversion rates (0.25–8 conv/s), open-drain ALERT output with SMBus alert protocol support, address-select pin (ADD0) for multi-device configuration, and timeout protection (30 ms) to prevent bus lockup - all within a 1.6 mm × 1.6 mm footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.5°C (–25°C to 85°C); ±1.0°C (–40°C to 125°C) - enables direct replacement of thermistors without calibration in consumer and industrial thermal monitoring. |
| Resolution | 12-bit (0.0625°C LSB) - supports fine-grained thermal control in battery management and PC thermal throttling. |
| Supply Range | 1.4 V to 3.6 V - compatible with single-cell Li-ion, coin-cell, and low-voltage embedded systems. |
| Quiescent Current | 7.5 µA max active; 0.35 µA max shutdown - extends runtime in always-on IoT sensors and wearables. |
| Interface | SMBus/I²C-compatible, 400 kHz fast mode & 2.85 MHz high-speed mode - interoperable with standard microcontroller peripherals without protocol translation. |
| Package | SOT563 (1.6 mm × 1.6 mm) - 68% smaller than SOT-23, enabling ultra-compact placement near heat sources on dense PCBs. |
| Alert Function | Open-drain ALERT pin with SMBus alert response - allows host MCU to detect over/under-temperature events without polling. |
Pinout & Package
SOT563 (6-pin) package: 1.60 mm × 1.60 mm body, 0.6 mm height, gull-wing leads. Designed for reflow soldering and space-constrained layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SCL | Input | Serial clock line; accepts I²C/SMBus clock signals up to 2.85 MHz; integrated Schmitt trigger rejects noise. |
| 2 - GND | Ground reference | Primary return path for analog sensor core and digital interface; must be low-impedance for accuracy. |
| 3 - ALERT | Output | Open-drain interrupt output; asserts when temperature exceeds THIGH/TLOW thresholds; requires external pullup. |
| 4 - ADD0 | Input | Address select pin; sets LSB of 7-bit I²C address (1001000–1001011) to support up to four devices on one bus. |
| 5 - V+ | Power input | Single supply rail (1.4–3.6 V); powers sensor, ADC, and interface logic; bypass capacitor (0.01 µF) required. |
| 6 - SDA | Input/Output | Open-drain bidirectional data line; supports read/write register access and SMBus alert response; requires pullup. |
Key Features
| Feature | Design Value |
|---|---|
| NIST-traceable calibration | 100% production-tested against NIST-traceable standards per ISO/IEC 17025 - eliminates need for system-level recalibration in medical and industrial applications. |
| Programmable conversion rate | 0.25–8 conversions/sec via CR1/CR0 bits - balances measurement latency vs. power consumption in battery-operated devices. |
| Multi-device bus addressing | Four unique I²C addresses via ADD0 pin (GND/V+/SDA/SCL) - enables distributed thermal sensing without address conflicts. |
| Bus timeout protection | Auto-reset if SCL held low >30 ms - prevents firmware lockup during I²C communication errors in embedded hosts. |
| Extended temperature range | –40°C to 125°C operating range with full specification - suitable for under-hood automotive modules and industrial motor controllers. |
Applications
| Portable Electronics | Power-Supply Monitoring |
|---|---|
|
Use Scenario: Real-time battery and SoC die temperature tracking in smartphones and tablets. IC Role / Device Role / Timing Role: Local temperature sensor feeding thermal management firmware; 4 conv/s default rate ensures responsive throttling. Use Value: Prevents thermal runaway using ±0.5°C accuracy at 25°C–85°C, reducing need for safety margins and enabling higher sustained performance. |
Use Scenario: Monitoring MOSFET junction and inductor temperature in DC-DC converters. IC Role / Device Role / Timing Role: Analog front-end replacement for thermistors; interfaces directly to PMIC or MCU over I²C. Use Value: 7.5 µA quiescent current minimizes impact on converter efficiency; SOT563 size allows placement <2 mm from hot components. |
| PC & Notebook Thermal Control | Enterprise Printers & Peripherals |
|
Use Scenario: CPU/GPU proximity sensing and fan speed regulation in thin-client systems. IC Role / Device Role / Timing Role: Secondary thermal sensor augmenting internal diode readings; ALERT pin triggers immediate firmware action. Use Value: SMBus alert compatibility enables direct integration into Intel PECI or AMD SMU ecosystems without custom driver development. |
Use Scenario: Fuser assembly and print-head temperature stabilization in laser and inkjet printers. IC Role / Device Role / Timing Role: Closed-loop feedback element in heater control loop; 0.0625°C resolution enables precise dwell-time adjustment. Use Value: NIST-traceable accuracy ensures consistent print quality across global manufacturing sites and reduces calibration labor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP112AIDRLR | Same SOT563 package and pinout; ±0.5°C accuracy over 0°C–65°C (vs. ±0.5°C over –25°C–85°C for TMP102AIDRLR); includes factory calibration drift compensation. | Better suited for medical-grade devices requiring tighter error bounds in mid-range temperatures; higher cost. | Select TMP112AIDRLR when long-term stability and sub-1°C error across full range are critical; TMP102AIDRLR remains optimal for cost-sensitive consumer designs. |
| LM75BIMM/NOPB | SOIC-8 package (3.9 mm × 4.9 mm); ±2°C accuracy (–25°C to 100°C); 250 µA active current; no ALERT pin; I²C-only (no SMBus alert). | Used where board space and ultra-low power are secondary to legacy compatibility and ease of layout. | Choose LM75BIMM/NOPB only when upgrading from existing LM75 designs; TMP102AIDRLR offers 33× lower current and 75% smaller footprint for new designs. |
Compared with TMP112AIDRLR, TMP102AIDRLR trades calibrated drift compensation for lower unit cost and broader base-accuracy coverage (–25°C to 85°C). Against LM75BIMM/NOPB, it delivers 33× lower quiescent current, integrated ALERT functionality, and 68% smaller footprint - making it superior for space- and power-constrained applications.
Availability
TMP102AIDRLR is available at Aetrix Electronics and suitable for portable electronics, power-supply temperature monitoring, and enterprise peripheral thermal management requiring stable component supply across multi-year production cycles.
Supply support for TMP102AIDRLR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader focused on analog and embedded processing technologies, with decades of expertise in precision sensing and low-power design.
The TMP102AIDRLR belongs to TI's precision analog temperature sensor product line, engineered specifically to replace NTC/PTC thermistors in applications demanding high accuracy, small size, and minimal system-level calibration effort.
FAQ
What is the operating temperature range of the TMP102AIDRLR?
The TMP102AIDRLR is specified to operate from –40°C to 125°C, with accuracy guaranteed at ±1.0°C across that full range. Its absolute maximum ratings extend to –55°C to 150°C, but functional performance is only assured within the –40°C to 125°C operating range. The TMP102AIDRLR maintains 12-bit resolution and SMBus/I²C functionality throughout this interval.
Does the TMP102AIDRLR require external calibration?
No, the TMP102AIDRLR does not require external calibration. It achieves ±0.5°C accuracy from –25°C to 85°C and ±1.0°C from –40°C to 125°C using factory-trimmed circuitry. All production units are 100% tested against NIST-traceable references per ISO/IEC 17025 accredited methods - enabling direct drop-in use in thermal management systems without user calibration.
How many TMP102AIDRLR devices can share one I²C bus?
Up to four TMP102AIDRLR devices can operate on a single I²C bus using the ADD0 pin to configure unique 7-bit addresses (1001000 to 1001011). Each device responds only to its assigned address, eliminating software arbitration overhead. The TMP102AIDRLR supports standard-mode (100 kHz), fast-mode (400 kHz), and high-speed mode (2.85 MHz) timing, ensuring reliable multi-drop operation.
What is the function of the ALERT pin on the TMP102AIDRLR?
The ALERT pin on the TMP102AIDRLR is an open-drain output that asserts when measured temperature crosses user-programmed THIGH or TLOW thresholds. In SMBus Interrupt Mode (TM = 1), it serves as a standardized alert signal - allowing the host controller to identify the triggering device via SMBus Alert Response Address without polling. A pullup resistor is required for proper operation.
What is the minimum supply voltage for reliable operation of the TMP102AIDRLR?
The TMP102AIDRLR operates reliably down to 1.4 V, with full specification compliance across 1.4 V to 3.6 V. At 1.4 V, quiescent current remains ≤7.5 µA, conversion time stays within 15 ms, and accuracy holds at ±1.0°C (–40°C to 125°C). This enables direct integration with single-cell lithium batteries and energy-harvesting systems where supply voltage may dip below 1.8 V.
TMP102AIDRLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 1.4V ~ 3.6V
- Resolution:
- 11 b
- Features:
- One-Shot, Output Switch, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- -25°C ~ 85°C (-40°C ~ 125°C)
- Operating Temperature:
- -55°C ~ 150°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-563
TMP102AIDRLR FAQ
1.How can I place an order for TMP102AIDRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP102AIDRLR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMP102AIDRLR reliable?
The price and inventory of TMP102AIDRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP102AIDRLR is usually 5 days.
3.What payment methods are accepted for TMP102AIDRLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP102AIDRLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP102AIDRLR?
TMP102AIDRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP102AIDRLR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMP102AIDRLR?
For technical support, including TMP102AIDRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP102AIDRLR requirements.
6.How does Aetrix verify that TMP102AIDRLR is sourced from the original manufacturer or authorized distributors?
All TMP102AIDRLR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMP102AIDRLR meets industry standards.
7.What is the process for return or replacement of TMP102AIDRLR?
All TMP102AIDRLR units undergo pre-shipment inspection (PSI). If there is an issue with TMP102AIDRLR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMP102AIDRLR part is unused and in its original packaging.
Return procedure for TMP102AIDRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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