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Texas Instruments TMP75AIDGKTG4
- Part No.:
- TMP75AIDGKTG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TMP75AIDGKTG4.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,802
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Product details
Overview
TMP75AIDGKTG4 from Texas Instruments is a digital temperature sensor with I²C/SMBus interface, designed for precision thermal monitoring in space-constrained systems. It delivers ±1 °C typical accuracy from −40 °C to +125 °C, 9–12-bit user-selectable resolution (down to 0.0625 °C), and operates from 2.7 V to 5.5 V. Its 8-pin VSSOP package supports up to eight devices on one bus and features NIST-traceable calibration for industrial-grade measurement integrity.
For engineers reviewing the TMP75AIDGKTG4 datasheet, TMP75AIDGKTG4 pinout, TMP75AIDGKTG4 application, or TMP75AIDGKTG4 equivalent, key selection criteria include SMBus Alert functionality, low-quiescent-current operation (50 µA active, 0.1 µA standby), address-pin configurability (A0–A2), and compatibility with LM75-form-factor layouts in thermal protection, battery management, and embedded environmental sensing.
Technical Context
The TMP75AIDGKTG4 integrates a ΔΣ ADC, on-chip oscillator, and digital control logic to convert die temperature directly into calibrated digital output without external signal conditioning. Its internal diode-based sensor provides linear response across −40 °C to +125 °C, eliminating lookup tables or polynomial compensation.
It implements full SMBus 2.0 and I²C protocol compliance-including START/STOP, repeated START, ACK/NACK, general call, and high-speed mode (up to 2 MHz)-with integrated Schmitt triggers and spike suppression on SDA/SCL. The ALERT pin supports interrupt-driven thermal event detection via SMBus Alert command (0x19) with slave-address return and THIGH/TLOW status encoding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±1 °C (typical), ±2 °C (max) over −40 °C to +125 °C - enables direct replacement of NTC/PTC thermistors without calibration. |
| Resolution | 9–12 bits, user-selectable - yields 0.5 °C to 0.0625 °C step size; configurable via Configuration register bits R1/R0. |
| Supply Range | 2.7 V to 5.5 V - supports single-supply operation across 3.3 V and 5 V microcontroller interfaces. |
| Quiescent Current | 50 µA (active), 0.1 µA (standby) - extends battery life in portable and always-on thermal monitors. |
| Interface | I²C/SMBus-compatible, open-drain SDA/SCL - interoperates with standard microcontroller peripherals and supports up to 8 devices per bus via A0–A2 address pins. |
| Alert Function | SMBus Alert pin with interrupt capability - signals over-temperature (THIGH) or under-temperature (TLOW) events without polling. |
| Conversion Time | 27.5 ms (9-bit) to 300 ms (12-bit) - trade-off between update rate and resolution; set by R1/R0 bits. |
Pinout & Package
Package: 8-pin VSSOP (DGK), body size 3.00 mm × 3.00 mm, industry-standard LM75 footprint compatible with SOIC-8 PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDA) | Serial Data I/O | Open-drain bidirectional data line; requires external pull-up; supports I²C/SMBus read/write transfers. |
| 2 (SCL) | Serial Clock Input | Open-drain clock input; master-generated; synchronizes all data transfers and ACK timing. |
| 3 (ALERT) | Interrupt Output | Open-drain active-low alert; asserts when temperature exceeds THIGH or falls below TLOW; supports SMBus Alert protocol. |
| 4 (GND) | Ground Reference | Primary return path for analog and digital circuitry; must be connected to system ground plane. |
| 5 (A2) | Address Select Input | Logic-level input (GND/V+) defining MSB of 7-bit slave address; sampled at bus start; latched for power efficiency. |
| 6 (A1) | Address Select Input | Logic-level input defining middle bit of slave address; enables up to 8 unique addresses on shared bus. |
| 7 (A0) | Address Select Input | Logic-level input defining LSB of slave address; combined with A1/A2, selects one of eight device addresses (1001000–1001111). |
| 8 (V+) | Power Supply | Single positive supply input (2.7–5.5 V); powers internal ADC, logic, and interface; bypass capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| NIST-traceable calibration | 100% production testing against NIST-traceable reference sensors with ISO/IEC 17025-accredited equipment - ensures metrological confidence for industrial QA and regulatory reporting. |
| User-selectable resolution | Configurable 9–12-bit conversion via R1/R0 bits - allows dynamic trade-off between measurement granularity (0.0625 °C) and update speed (27.5 ms minimum). |
| SMBus Alert support | Hardware interrupt signaling via dedicated ALERT pin with SMBus Alert command (0x19) response - reduces host CPU polling overhead and enables real-time thermal event handling. |
| Low-power standby mode | 0.1 µA shutdown current - preserves battery capacity in intermittently powered systems such as IoT edge nodes and portable diagnostics. |
| LM75 form factor compatibility | Pin-for-pin and footprint-compatible with industry-standard LM75 - enables drop-in upgrade path with no PCB redesign required. |
Applications
| Power-Supply Thermal Monitoring | Notebook Computer Thermal Management |
|---|---|
Use Scenario: Real-time temperature tracking of DC-DC converter MOSFETs and inductors to prevent thermal runaway during peak load conditions. IC Role / Device Role / Timing Role: Digital temperature sensor providing calibrated die-temperature readings via I²C to system controller for closed-loop fan speed or power throttling decisions. Use Value: ±1 °C accuracy ensures reliable trip-point enforcement at 85 °C and above, reducing risk of premature shutdown or undetected overheating. | Use Scenario: Localized hotspot detection near CPU/GPU voltage regulators and SSD controllers in ultra-thin laptop chassis. IC Role / Device Role / Timing Role: Standalone thermal monitor interfacing directly with EC (Embedded Controller) over SMBus to trigger thermal mitigation sequences. Use Value: 8-pin VSSOP footprint fits tight board areas; 0.1 µA standby current minimizes parasitic drain during sleep states. |
| Battery Pack Temperature Sensing | Office Equipment Environmental Control |
Use Scenario: Monitoring Li-ion cell temperature during charge/discharge cycles in portable medical devices and power tools. IC Role / Device Role / Timing Role: Primary temperature sensor feeding data to battery management IC (BMS) for charge-rate limiting and safety cutoff. Use Value: NIST-traceable calibration supports compliance with IEC 62133 and UL 1642 requirements for certified battery packs. | Use Scenario: Ambient and component-level temperature feedback in multifunction printers and copiers to stabilize laser diode output and fuser roller performance. IC Role / Device Role / Timing Role: Distributed thermal node communicating over shared I²C bus with main MCU to maintain optimal operating envelope. Use Value: 8-device bus addressing enables scalable deployment across multiple subsystems without address conflicts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP175AIDGKT | 27-address capability (vs. 8), identical accuracy/resolution/interface; no NIST traceability claim in datasheet. | Supports denser multi-sensor deployments on same bus; lacks documented metrological traceability for regulated environments. | Select TMP175AIDGKT when >8 sensors per bus are needed and NIST traceability is not required. |
| LMT70AYFFT | Analog output (voltage), 0.1 °C max error, 0.5 ms response time; no digital interface or ALERT pin. | Requires external ADC and interrupt logic; better for fast transient detection but adds BOM and layout complexity. | Select LMT70AYFFT only when analog integration or sub-millisecond thermal response is mandatory and digital bus overhead is unacceptable. |
Compared with TMP175AIDGKT and LMT70AYFFT, the TMP75AIDGKTG4 uniquely balances NIST-traceable accuracy, SMBus Alert responsiveness, and LM75 footprint compatibility-making it optimal for industrial, medical, and computing applications where calibration integrity and interrupt-driven thermal control are jointly critical.
Availability
TMP75AIDGKTG4 is available at Aetrix Electronics and suitable for power-supply thermal monitoring, notebook computer thermal management, and battery pack temperature sensing requiring stable component supply, long-term lifecycle support, and consistent metrological performance.
Supply support for TMP75AIDGKTG4 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 delivering analog and embedded processing solutions, with deep expertise in precision sensing, power management, and industrial interface technologies.
The TMP75AIDGKTG4 belongs to TI's TMPx75 family of digital temperature sensors, engineered specifically for replacing thermistors in thermal protection, environmental monitoring, and system health management applications where accuracy, low power, and bus scalability matter.
FAQ
What is the maximum number of TMP75AIDGKTG4 devices supported on a single I²C bus?
The TMP75AIDGKTG4 supports up to eight devices on one I²C or SMBus interface using its three hardware address pins (A0, A1, A2). Each pin accepts GND or V+ to configure one of eight unique 7-bit slave addresses (1001000 to 1001111 binary). Unlike the TMP175AIDGKT, the TMP75AIDGKTG4 does not support floating address pins or expanded addressing beyond eight units.
Does the TMP75AIDGKTG4 require external calibration for ±1 °C accuracy?
No, the TMP75AIDGKTG4 does not require external calibration to achieve ±1 °C typical accuracy from −40 °C to +125 °C. Its factory calibration is NIST-traceable, verified using ISO/IEC 17025-accredited equipment. This eliminates the need for system-level trimming or look-up tables, enabling direct use in production thermal monitoring circuits.
How does the ALERT pin on the TMP75AIDGKTG4 function in interrupt mode?
In interrupt mode (TM = 1, set via Configuration register), the ALERT pin on the TMP75AIDGKTG4 asserts low when temperature crosses either THIGH or TLOW thresholds. It supports SMBus Alert protocol: upon detecting ALERT, the host sends command 0x19, and the TMP75AIDGKTG4 responds with its slave address - with the LSB indicating THIGH (high) or TLOW (low) cause - enabling precise fault identification without polling.
What is the conversion time for 12-bit resolution on the TMP75AIDGKTG4?
The TMP75AIDGKTG4 requires 220 ms (typical) to 300 ms (maximum) to complete a 12-bit temperature conversion. This value is fixed for R1=1, R0=1 configuration and applies across the full operating temperature range (−40 °C to +125 °C) and supply range (2.7 V to 5.5 V). Lower resolutions reduce conversion time proportionally: 9-bit takes 27.5–37.5 ms.
Is the TMP75AIDGKTG4 pin-compatible with the LM75 temperature sensor?
Yes, the TMP75AIDGKTG4 is pin-compatible and footprint-compatible with the industry-standard LM75 in both SOIC-8 (D) and VSSOP-8 (DGK) packages. Pin assignments (SDA, SCL, GND, V+, A0–A2, ALERT) match exactly, and electrical interface behavior (open-drain I/O, voltage levels, timing) complies with LM75 specifications - enabling drop-in replacement without PCB modification.
TMP75AIDGKTG4 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:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 2.7V ~ 5.5V
- Resolution:
- 11 b
- Features:
- One-Shot, Output Switch, Programmable Resolution, Shutdown Mode, Standby Mode
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- -25°C ~ 85°C (-40°C ~ 125°C)
- Operating Temperature:
- -55°C ~ 127°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-VSSOP
TMP75AIDGKTG4 FAQ
1.How can I place an order for TMP75AIDGKTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP75AIDGKTG4 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 TMP75AIDGKTG4 reliable?
The price and inventory of TMP75AIDGKTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP75AIDGKTG4 is usually 5 days.
3.What payment methods are accepted for TMP75AIDGKTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP75AIDGKTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP75AIDGKTG4?
TMP75AIDGKTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP75AIDGKTG4 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 TMP75AIDGKTG4?
For technical support, including TMP75AIDGKTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP75AIDGKTG4 requirements.
6.How does Aetrix verify that TMP75AIDGKTG4 is sourced from the original manufacturer or authorized distributors?
All TMP75AIDGKTG4 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 TMP75AIDGKTG4 meets industry standards.
7.What is the process for return or replacement of TMP75AIDGKTG4?
All TMP75AIDGKTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TMP75AIDGKTG4, 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 TMP75AIDGKTG4 part is unused and in its original packaging.
Return procedure for TMP75AIDGKTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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