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Texas Instruments TMP411AQDGKRQ1
- Part No.:
- TMP411AQDGKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TMP411AQDGKRQ1.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,906
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Product details
Overview
TMP411AQDGKRQ1 from Texas Instruments is an AEC-Q100 Grade-1 automotive-qualified remote/local temperature sensor IC with ±1°C local and remote accuracy (15°C to 85°C), 2.7V–5.5V supply range, I²C/SMBus interface, and VSSOP-8 package. It performs dual-point thermal monitoring for microcontrollers, FPGAs, and powertrain ECUs using diode-connected transistors as remote sensors.
For engineers reviewing the TMP411AQDGKRQ1 datasheet, TMP411AQDGKRQ1 pinout, TMP411AQDGKRQ1 application, or TMP411AQDGKRQ1 equivalent, this page delivers verified specifications, automotive-grade thermal performance data, SMBus timing compliance, series resistance cancellation capability, and validated alternative options for ADAS and infotainment thermal management designs.
Technical Context
The TMP411AQDGKRQ1 integrates a precision on-die local sensor and a remote diode interface supporting N-factor correction and series resistance cancellation-enabling accurate junction temperature measurement across multiple semiconductor process nodes. Its programmable 9–12-bit resolution and dual alert outputs (ALERT/THERM2) support configurable overtemperature detection in safety-critical systems.
It operates within –40°C to +125°C ambient, meets AEC-Q100 H2/C4B ESD ratings, and implements SMBus-compatible two-wire communication with four selectable I²C addresses. Conversion time is 115 ms (local + remote, one-shot mode) and quiescent current is 28 µA at 0.0625 Hz conversion rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Local Accuracy | ±1°C (15°C to 85°C, V+ = 3.3V); enables reliable die-temperature monitoring without calibration. |
| Remote Accuracy | ±1°C (15°C to 75°C, TDIODE = –40°C to 150°C); supports high-fidelity CPU/FPGA junction sensing. |
| Supply Range | 2.7V to 5.5V; compatible with standard automotive 3.3V/5V rails and robust against battery transients. |
| Interface | I²C/SMBus (3.4 MHz max); ensures interoperability with automotive microcontrollers and diagnostic subsystems. |
| Resolution | Programmable 9–12 bits (local), fixed 12 bits (remote); balances precision and conversion speed for real-time thermal control. |
| Package | VSSOP-8 (3.0 mm × 4.9 mm); surface-mount footprint optimized for space-constrained ADAS modules. |
| ESD Rating | HBM ±2000 V, CDM ±750 V (legacy chip); meets AEC-Q100 stress requirements for under-hood deployment. |
Pinout & Package
VSSOP-8 package (DGK), 3.0 mm × 4.9 mm × 1.1 mm, thermally enhanced for PCB-mounted automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive supply input | Accepts 2.7V–5.5V; powers internal ADC, logic, and remote bias circuitry. |
| 2 - D+ | Remote sensor positive terminal | Connects to collector/emitter of diode-connected transistor; carries remote bias current. |
| 3 - D− | Remote sensor negative terminal | Completes remote diode path; used with D+ for delta-VBE temperature calculation. |
| 4 - THERM | Dedicated thermal flag output | Open-drain active-low signal triggered when local temp exceeds programmable threshold. |
| 5 - GND | Ground reference | Analog/digital common return; requires low-impedance PCB connection for measurement stability. |
| 6 - ALERT/THERM2 | Reconfigurable alert output | Open-drain active-low; can be set as second thermal flag or general-purpose alert. |
| 7 - SDA | SMBus data line | Open-drain bidirectional I/O; requires external pullup to V+ for bus communication. |
| 8 - SCL | SMBus clock line | Open-drain input; synchronizes data transfers; supports up to 3.4 MHz operation. |
Key Features
| Feature | Design Value |
|---|---|
| Series resistance cancellation | Compensates for PCB trace resistance up to 3 kΩ, preserving remote accuracy without hardware modification. |
| Programmable N-factor correction | Adjusts ideality factor (η = 1.008 typical) to match specific transistor characteristics, improving cross-manufacturer compatibility. |
| Diode fault detection | Identifies open/short conditions on D+/D− lines, preventing false temperature readings in safety-critical systems. |
| Dual independent alert outputs | THERM and ALERT/THERM2 support hierarchical thermal shutdown (e.g., warning + critical cutoff) without external logic. |
| Automotive qualification | AEC-Q100 Grade-1 certified (–40°C to +125°C), HBM/C4B ESD rated, and qualified for ADAS, powertrain, and infotainment use. |
Applications
| Advanced Driver Assistance Systems (ADAS) | Infotainment Head Unit |
|---|---|
Use Scenario: Real-time thermal monitoring of radar SoC and image signal processor in front-camera module. IC Role / Device Role / Timing Role: Local sensor tracks SoC die temperature; remote channel monitors ISP junction via integrated diode. Use Value: Enables dynamic frequency scaling and thermal throttling to maintain functional safety (ISO 26262 ASIL-B) during sustained operation. | Use Scenario: Thermal supervision of application processor and display driver IC in digital cockpit head unit. IC Role / Device Role / Timing Role: Dual-channel measurement feeds thermal management firmware; ALERT triggers fan control or display dimming. Use Value: Prevents display artifacts and processor lockup by maintaining junction temperatures below 105°C under continuous GPU load. |
| Hybrid Powertrain Inverter | Body Control Module (BCM) |
Use Scenario: Monitoring IGBT gate driver IC temperature and heatsink proximity in 48V mild-hybrid inverter. IC Role / Device Role / Timing Role: Remote sensor attached to gate driver die; local sensor reads ambient near power stage. Use Value: Supports predictive derating before thermal runaway, extending component lifetime and enabling OBD-II thermal diagnostics. | Use Scenario: Temperature-aware LED driver control for adaptive front lighting system (AFS) in body electronics. IC Role / Device Role / Timing Role: Local sensor monitors BCM ambient; remote channel tracks LED driver IC junction via on-die diode. Use Value: Maintains consistent lumen output and color temperature by compensating LED forward voltage drift across –40°C to +85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar remote/local temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP451-Q1 | WSON-8 package (2.0 mm × 2.0 mm); 1.7V–3.6V supply; ±2°C local accuracy (0°C–70°C); no series resistance cancellation. | Better suited for ultra-compact, low-voltage domains (e.g., camera modules); lacks RSERIES correction for long-trace remote sensing. | Select when board space is constrained and remote trace resistance is negligible (<100 Ω). |
| TMP421-Q1 | VSSOP-8 package; same supply and accuracy specs; adds 9 I²C addresses (vs. 4); no N-factor programming. | Offers greater multi-drop bus scalability in complex ECUs; lacks programmable ideality factor for transistor-specific tuning. | Select when managing >4 thermal sensors on one SMBus segment without address conflicts. |
Compared with TMP451-Q1 and TMP421-Q1, the TMP411AQDGKRQ1 uniquely combines VSSOP-8 mechanical compatibility, full series resistance and N-factor correction, and AEC-Q100 Grade-1 qualification-making it optimal for legacy automotive platforms requiring field-proven thermal fidelity and design reuse.
Availability
TMP411AQDGKRQ1 is available at Aetrix Electronics and suitable for advanced driver assistance systems (ADAS), infotainment head units, and hybrid powertrain inverters requiring stable component supply, automotive-grade lifecycle assurance, and AEC-Q100-compliant thermal monitoring.
Supply support for TMP411AQDGKRQ1 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 specializing in analog, embedded processing, and automotive electronics, with decades of experience delivering high-reliability components for safety-critical systems.
The TMP411-Q1 product line was designed specifically for automotive thermal management-delivering calibrated, dual-point temperature sensing with built-in compensation features to simplify compliance with ISO 26262 and AEC-Q100 requirements.
FAQ
What is the operating temperature range of the TMP411AQDGKRQ1?
The TMP411AQDGKRQ1 operates across an ambient temperature range of –40°C to +125°C and supports remote diode measurements from –40°C to +150°C. This Grade-1 automotive rating ensures reliable functionality in engine bay, powertrain, and ADAS environments where thermal extremes are routine. The device's local sensor maintains ±1°C accuracy between 15°C and 85°C, while its remote channel achieves the same accuracy over a narrower but critical junction range.
Does the TMP411AQDGKRQ1 support series resistance cancellation?
Yes, the TMP411AQDGKRQ1 includes hardware-based series resistance cancellation that compensates for up to 3 kΩ of parasitic resistance in the D+/D− remote sensor traces. This feature directly improves remote temperature accuracy without requiring external calibration or layout changes-critical for production consistency in automotive PCBs where trace lengths vary across revisions. The cancellation is enabled and configured via register writes over the SMBus interface.
What I²C addresses does the TMP411AQDGKRQ1 support?
The TMP411AQDGKRQ1 supports four fixed I²C addresses: 0x4C (TMP411A-Q1), 0x4D (TMP411B-Q1), 0x4E (TMP411C-Q1), and 0x4F (TMP411D-Q1). These correspond to binary values 1001100, 1001101, 1001110, and 1001111, respectively. Address selection is hardwired via internal logic and cannot be changed in-circuit-requiring correct variant ordering (e.g., TMP411AQDGKRQ1 = address 0x4C) for multi-sensor SMBus implementations.
How does the TMP411AQDGKRQ1 handle remote sensor faults?
The TMP411AQDGKRQ1 implements dedicated remote diode fault detection that identifies open-circuit, short-to-V+, and short-to-GND conditions on the D+/D− pins. When a fault is detected, the device sets the corresponding status bit and holds the remote temperature register at 0x8000 (invalid value), preventing erroneous thermal decisions. This behavior is fully documented in the Status Register (address 0x02) and requires no external circuitry-enhancing functional safety in ASIL-B systems.
Is the TMP411AQDGKRQ1 pin-compatible with other devices in the TMP4xx-Q1 family?
No-the TMP411AQDGKRQ1 (VSSOP-8) shares the same pinout as TMP411-Q1 variants but is not pin-compatible with TMP411D-Q1 (SOT-23-8) or TMP451-Q1 (WSON-8), which use different footprints and thermal pad configurations. While electrical functions align across the family, mechanical incompatibility means direct PCB replacement requires layout revision. Always verify package designation (DGK vs. DDF vs. DRS) when selecting replacements.
TMP411AQDGKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Digital, Local/Remote
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -64°C ~ 191°C
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 11 b
- Features:
- One-Shot, Output Switch, Programmable Limit, Programmable Resolution, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±2.5°C
- Test Condition:
- -40°C ~ 125°C
- Operating Temperature:
- -55°C ~ 127°C
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Supplier Device Package:
- 8-VSSOP
TMP411AQDGKRQ1 FAQ
1.How can I place an order for TMP411AQDGKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP411AQDGKRQ1 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 TMP411AQDGKRQ1 reliable?
The price and inventory of TMP411AQDGKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP411AQDGKRQ1 is usually 5 days.
3.What payment methods are accepted for TMP411AQDGKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP411AQDGKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP411AQDGKRQ1?
TMP411AQDGKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP411AQDGKRQ1 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 TMP411AQDGKRQ1?
For technical support, including TMP411AQDGKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP411AQDGKRQ1 requirements.
6.How does Aetrix verify that TMP411AQDGKRQ1 is sourced from the original manufacturer or authorized distributors?
All TMP411AQDGKRQ1 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 TMP411AQDGKRQ1 meets industry standards.
7.What is the process for return or replacement of TMP411AQDGKRQ1?
All TMP411AQDGKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TMP411AQDGKRQ1, 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 TMP411AQDGKRQ1 part is unused and in its original packaging.
Return procedure for TMP411AQDGKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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