Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Sensors, Transducers > Temperature Sensors > Analog and Digital Output

Texas Instruments TMP75AIDGKT

Name: TMP75AIDGKT
Brand: Texas Instruments
SKU: TMP75AIDGKT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TMP75AIDGKT

Manufacturer:: Texas Instruments

Category:: Analog and Digital Output

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: TMP75AIDGKT.pdf

Description:: SENSOR DIGITAL -40C-125C 8VSSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,694

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TMP75AIDGKT from Texas Instruments is a digital temperature sensor with I²C/SMBus interface, designed for thermal monitoring and protection in embedded 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 per bus and integrates an open-drain ALERT output for overtemperature interrupt signaling.

For engineers reviewing the TMP75AIDGKT datasheet, TMP75AIDGKT pinout, TMP75AIDGKT application, or TMP75AIDGKT equivalent, key selection criteria include NIST-traceable calibration, SMBus Alert compatibility, low-quiescent-current operation (50 µA active, 0.1 µA standby), and support for fast-mode I²C (up to 400 kHz) and high-speed mode (up to 2.38 MHz).

Technical Context

The TMP75AIDGKT implements a ΔΣ ADC-based diode temperature sensing architecture with on-chip oscillator and configurable control logic. Its serial interface operates strictly as a slave device, supporting START/STOP, repeated START, ACK/NACK, and general call protocols per I²C and SMBus specifications.

It features three hardware address pins (A0–A2) that configure one of eight fixed 7-bit slave addresses (1001xxx), enabling multi-drop bus topology without software address assignment. The ALERT pin functions as an SMBus Alert responder in interrupt mode (TM = 1), returning its slave address with LSB indicating THIGH/TLOW trigger source.

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 or linearization.
Resolution	9–12 bits, user-selectable via Configuration register - provides selectable trade-off between conversion time (27.5 ms to 300 ms) and temperature step size (0.5 °C to 0.0625 °C).
Supply Range	2.7 V to 5.5 V - interoperable with 3.3 V and 5 V logic domains without level-shifting.
Quiescent Current	50 µA (active), 0.1 µA (standby) - suitable for battery-powered and energy-constrained applications like portable electronics.
I²C Speed Support	Standard (100 kHz), Fast (400 kHz), High-Speed (2.38 MHz) - ensures compatibility across legacy and high-throughput host controllers.
Address Options	8 unique slave addresses via A0/A1/A2 pins - allows up to eight TMP75AIDGKT sensors on a single bus without address conflict.
Alert Function	Open-drain ALERT output with SMBus Alert response - enables hardware interrupt-driven thermal event handling without polling.

Pinout & Package

Package: 8-pin VSSOP (DGK), body size 3.00 mm × 3.00 mm, exposed pad not present, RoHS-compliant.

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 and ACK/NACK handshake.
2 - SCL	Serial Clock Input	Open-drain clock input; master-generated; synchronizes all data transfers; includes integrated Schmitt trigger and spike suppression.
3 - ALERT	Interrupt Output	Open-drain overtemperature alert; active-low; responds to THIGH/TLOW thresholds; supports SMBus Alert protocol with address return.
4 - GND	Ground Reference	Analog and digital ground reference; must be connected to system common ground plane for accurate thermal measurement.
5 - A2	Address Select Input	Logic input determining MSB of 7-bit slave address; accepts GND or V+; not floating - differs from TMP175 which allows float.
6 - A1	Address Select Input	Logic input determining middle bit of slave address; tied to GND or V+ to select one of eight possible addresses (1001xxx).
7 - A0	Address Select Input	Logic input determining LSB of slave address; determines final address bit; must be hard-wired (no floating allowed).
8 - V+	Power Supply	Single supply input (2.7–5.5 V); powers internal ADC, oscillator, interface logic, and ALERT driver; bypass capacitor required.

Key Features

Feature	Design Value
NIST-Traceable Calibration	100% production testing against NIST-traceable standards with ISO/IEC 17025-accredited equipment - eliminates need for end-customer calibration validation.
User-Selectable Resolution	Configurable 9–12-bit conversion via Configuration register - enables optimization of update rate vs. precision for specific thermal response requirements.
SMBus Alert Compatibility	Full implementation of SMBus Alert command (00011001) with slave address return and THIGH/TLOW source identification - reduces host polling overhead in multi-sensor systems.
Low-Power Standby Mode	0.1 µA shutdown current with register retention - preserves configuration and last temperature reading during extended sleep periods.
Robust Bus Timing	Timeout protection (20–30 ms) on SCL/SDA low hold - prevents bus lockup due to noise or master failure; compatible with standard/fast/high-speed I²C timing.

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 under load. IC Role / Device Role / Timing Role: Digital temperature sensor providing periodic 12-bit readings via I²C to system microcontroller for fan speed control and throttling decisions. Use Value: ±1 °C accuracy ensures precise thermal margining; 0.1 µA standby current minimizes impact on power-supply efficiency during idle states.	Use Scenario: Localized hotspot detection on CPU voltage regulator modules (VRMs) and GPU memory banks. IC Role / Device Role / Timing Role: SMBus Alert-enabled sensor triggering immediate interrupt on thermal threshold breach, enabling rapid thermal mitigation before throttling occurs. Use Value: Eight-device bus addressing allows distributed placement across motherboard zones; VSSOP footprint fits tight PCB layouts near heat sources.
Battery Pack Temperature Sensing	Office Equipment Environmental Control
Use Scenario: Monitoring Li-ion cell temperature during charging/discharging cycles in portable power tools and medical devices. IC Role / Device Role / Timing Role: Low-power temperature monitor interfacing with battery management IC via shared I²C bus, reporting data at 1 Hz intervals. Use Value: 2.7–5.5 V supply range matches battery voltage swing; ±2 °C max error meets UL/IEC 62368-1 thermal safety compliance thresholds.	Use Scenario: Ambient and component-level temperature feedback in laser printers, copiers, and multifunction peripherals. IC Role / Device Role / Timing Role: Factory-calibrated sensor feeding thermal data to main controller for fuser roller temperature regulation and paper path jam prevention. Use Value: NIST-traceable calibration ensures consistent performance across production batches; SOIC-8 and VSSOP-8 package options support both through-hole and SMT assembly lines.

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 under load.

IC Role / Device Role / Timing Role: Digital temperature sensor providing periodic 12-bit readings via I²C to system microcontroller for fan speed control and throttling decisions.

Use Value: ±1 °C accuracy ensures precise thermal margining; 0.1 µA standby current minimizes impact on power-supply efficiency during idle states.

Use Scenario: Localized hotspot detection on CPU voltage regulator modules (VRMs) and GPU memory banks.

IC Role / Device Role / Timing Role: SMBus Alert-enabled sensor triggering immediate interrupt on thermal threshold breach, enabling rapid thermal mitigation before throttling occurs.

Use Value: Eight-device bus addressing allows distributed placement across motherboard zones; VSSOP footprint fits tight PCB layouts near heat sources.

Battery Pack Temperature Sensing

Office Equipment Environmental Control

Use Scenario: Monitoring Li-ion cell temperature during charging/discharging cycles in portable power tools and medical devices.

IC Role / Device Role / Timing Role: Low-power temperature monitor interfacing with battery management IC via shared I²C bus, reporting data at 1 Hz intervals.

Use Value: 2.7–5.5 V supply range matches battery voltage swing; ±2 °C max error meets UL/IEC 62368-1 thermal safety compliance thresholds.

Use Scenario: Ambient and component-level temperature feedback in laser printers, copiers, and multifunction peripherals.

IC Role / Device Role / Timing Role: Factory-calibrated sensor feeding thermal data to main controller for fuser roller temperature regulation and paper path jam prevention.

Use Value: NIST-traceable calibration ensures consistent performance across production batches; SOIC-8 and VSSOP-8 package options support both through-hole and SMT assembly lines.

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital temperature sensing applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TMP175AIDGKT	27-address capability (vs. 8), same accuracy/resolution/interface; higher ESD rating (HBM ±4 kV vs. ±4 kV, CDM ±1 kV vs. ±1 kV); identical VSSOP-8 package.	Supports denser multi-sensor deployments on single bus; no change in thermal performance or power consumption.	Select TMP175AIDGKT when >8 sensors per bus are required; otherwise TMP75AIDGKT offers identical functionality at lower cost and smaller design footprint.
LMT70YFQR	Higher accuracy (±0.1 °C typ at 0–100 °C), 0.5 µA quiescent current, but only 2-wire interface (no SMBus Alert), 6-pin WSON package, narrower temp range (−55 °C to +150 °C).	Targeted at ultra-precision analog front-end applications; lacks interrupt-driven ALERT output and SMBus protocol support.	Choose LMT70YFQR only when sub-0.5 °C accuracy is mandatory and SMBus Alert is unnecessary; TMP75AIDGKT remains preferred for industrial/commercial I²C/SMBus ecosystems.

Compared with TMP175AIDGKT, the TMP75AIDGKT trades address scalability for cost and simplicity while retaining identical thermal specs and SMBus Alert functionality; versus LMT70YFQR, it prioritizes protocol robustness and interrupt capability over raw accuracy, making it better suited for bus-managed thermal protection in computing and power systems.

Availability

TMP75AIDGKT 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 NIST-traceable calibration documentation.

Supply support for TMP75AIDGKT 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets since 1930.

The TMP75AIDGKT belongs to TI's precision analog temperature sensor product line, engineered specifically for drop-in replacement of thermistors in I²C/SMBus-based thermal management systems where calibration-free accuracy and interrupt-driven responsiveness are critical.

FAQ

What is the operating temperature range of the TMP75AIDGKT?

The TMP75AIDGKT is specified to operate from −40 °C to +125 °C. Its ±1 °C typical accuracy and ±2 °C maximum error are guaranteed across this full industrial range. The device uses on-die diode sensing and a ΔΣ ADC to achieve this performance without external compensation components. This range makes the TMP75AIDGKT suitable for demanding environments such as power converters, motor drives, and automotive cabin electronics where ambient and junction temperatures exceed standard commercial limits.

Does the TMP75AIDGKT support SMBus Alert functionality?

Yes, the TMP75AIDGKT fully supports SMBus Alert. When configured in interrupt mode (TM = 1), its ALERT pin asserts low upon crossing THIGH or TLOW thresholds. A master issuing the SMBus Alert command (00011001) receives the TMP75AIDGKT's slave address back on SDA, with the LSB indicating whether THIGH (high) or TLOW (low) triggered the event. This feature eliminates continuous polling and enables efficient multi-sensor thermal event handling in systems like servers and telecom equipment.

How many unique addresses does the TMP75AIDGKT support?

The TMP75AIDGKT supports exactly eight unique 7-bit slave addresses, determined by the logic states of its A0, A1, and A2 pins (all tied to GND or V+). Unlike the TMP175AIDGKT, floating address pins are not permitted on the TMP75AIDGKT. Each combination yields a fixed address in the 1001xxx format (e.g., 1001000 for A2=A1=A0=0). This 8-device limit simplifies bus arbitration and ensures deterministic address mapping in designs where density is secondary to cost and layout simplicity.

What is the resolution and conversion time relationship for the TMP75AIDGKT?

The TMP75AIDGKT offers user-selectable resolution from 9 to 12 bits via the Configuration register. Conversion time scales directly: 9-bit mode takes 27.5 ms (typ), 10-bit 55 ms, 11-bit 110 ms, and 12-bit 220 ms (typ). Higher resolution improves temperature step size (0.5 °C → 0.0625 °C) but increases latency. This trade-off is programmable in real time, allowing dynamic adjustment based on thermal dynamics - e.g., fast 9-bit reads during transient events, slower 12-bit reads for steady-state monitoring.

Is the TMP75AIDGKT calibrated to NIST-traceable standards?

Yes, every production unit of the TMP75AIDGKT undergoes 100% final test against sensors calibrated to NIST-traceable standards, using ISO/IEC 17025-accredited equipment. This ensures documented metrological traceability for applications requiring regulatory compliance (e.g., medical devices, industrial safety systems). The calibration covers the full −40 °C to +125 °C range and is reflected in the device's guaranteed ±2 °C maximum accuracy specification - no additional customer calibration is needed for most thermal protection use cases.

TMP75AIDGKT 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

TMP75AIDGKT FAQ

1.How can I place an order for TMP75AIDGKT through Aetrix?

Please submit a Request for Quotation (RFQ) for TMP75AIDGKT 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 TMP75AIDGKT reliable?

The price and inventory of TMP75AIDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP75AIDGKT is usually 5 days.

3.What payment methods are accepted for TMP75AIDGKT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP75AIDGKT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TMP75AIDGKT?

TMP75AIDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TMP75AIDGKT 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 TMP75AIDGKT?

For technical support, including TMP75AIDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP75AIDGKT requirements.

6.How does Aetrix verify that TMP75AIDGKT is sourced from the original manufacturer or authorized distributors?

All TMP75AIDGKT 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 TMP75AIDGKT meets industry standards.

7.What is the process for return or replacement of TMP75AIDGKT?

All TMP75AIDGKT units undergo pre-shipment inspection (PSI). If there is an issue with TMP75AIDGKT, 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 TMP75AIDGKT part is unused and in its original packaging.

Return procedure for TMP75AIDGKT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…