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Texas Instruments TMP1075DSGT
- Part No.:
- TMP1075DSGT
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
TMP1075DSGT.pdf
- Description:
- HIGH-ACCURACY UPGRADE TO INDUSTR
- Quantity:
- Payment:
- Shipping:
Inventory:2,784
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Product details
Overview
TMP1075DSGT from Texas Instruments is a high-accuracy, low-power digital temperature sensor with I²C/SMBus interface, ±0.25°C typical accuracy from −55°C to 125°C, 12-bit resolution (0.0625°C), and 2.7 μA average supply current. It serves as a pin- and software-compatible upgrade to LM75/TMP75 in thermal monitoring circuits for power supplies, battery management, and PC/notebook systems.
For engineers reviewing the TMP1075DSGT datasheet, TMP1075DSGT pinout, TMP1075DSGT application, or TMP1075DSGT equivalent, this page delivers verified package mapping (WSON-8), confirmed I²C address flexibility (32 options), NIST-traceable calibration, ALERT pin functionality, and explicit compatibility with LM75-form-factor designs.
Technical Context
The TMP1075DSGT integrates an on-chip 12-bit ADC with internal thermal BJT sensing element, delivering temperature data in two's-complement format via SMBus/I²C protocol. Its digital interface supports Fast Mode (400 kHz) and High-Speed Mode (2.56 MHz), includes integrated spike filters for I³C mixed-mode bus coexistence, and features programmable conversion rates (27.5–220 ms).
It implements a dual-threshold interrupt system using THIGH/TLOW registers and an open-drain ALERT output with SMBus Alert command support. Address configuration uses three logic-selectable pins (A0/A1/A2), enabling up to 32 unique device addresses on a shared bus - all validated for operation across −55°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.25°C typical (−55°C to 125°C); enables precise thermal protection without calibration overhead |
| Resolution | 12-bit (0.0625°C LSB); supports fine-grained temperature trending in closed-loop control |
| Supply Range | 1.7 V to 5.5 V; interoperable with 1.8 V, 3.3 V, and 5 V system rails |
| Average Current | 2.7 μA (default conversion rate); extends battery life in always-on environmental sensors |
| I²C Addresses | 32 configurable via A0/A1/A2 pins; eliminates bus contention in multi-sensor server/PCB layouts |
| Package | WSON-8 (2.0 mm × 2.0 mm); reduces PCB footprint by 82% vs. SOIC-8 |
| Interface | SMBus/I²C compatible; ensures drop-in replacement in legacy LM75-based firmware |
Pinout & Package
Package: WSON-8 (DSG), 2.0 mm × 2.0 mm, exposed thermal pad, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SDA | I/O (open-drain) | Serial data line; requires external pullup; supports ACK/NACK and SMBus Alert response |
| 2 SCL | Input | Serial clock input; accepts 100 kHz–2.56 MHz; includes Schmitt trigger and spike filter |
| 3 ALERT | Output (open-drain) | Over/under-temperature interrupt; active-low; configurable via THIGH/TLOW registers |
| 4 GND | Ground | Reference return path; connects to thermal pad for optimal junction-to-board conduction |
| 5 V+ | Power Input | Supply rail (1.7–5.5 V); powers internal ADC, oscillator, and interface logic |
| 6 A0 | Input | LSB address select; sets bit 0 of 7-bit I²C address; accepts GND/V+/SDA/SCL |
| 7 A2 | Input | MSB address select; sets bit 2 of 7-bit I²C address; accepts GND/V+ |
| 8 A1 | Input | Mid-bit address select; sets bit 1 of 7-bit I²C address; accepts GND/V+/SDA/SCL |
Key Features
| Feature | Design Value |
|---|---|
| NIST-traceable calibration | 100% production-tested against ISO/IEC 17025-accredited standards; eliminates field recalibration |
| I³C mixed-mode bus support | Coexists on same bus with I³C devices via integrated 50 ns spike filter on SCL/SDA |
| Software-compatible upgrade path | Identical register map and LM75/TMP75 command set; zero firmware changes required |
| Programmable conversion timing | Four selectable rates (27.5/55/110/220 ms); balances measurement latency vs. power consumption |
| Thermal error compensation | PSRR of ±0.03 °C/V; maintains accuracy across supply ripple in noisy power environments |
Applications
| Power-Supply Thermal Monitoring | PC and Notebook Thermal Management |
|---|---|
Use Scenario: Real-time die temperature tracking of VRMs, DC/DC converters, and PMICs in server PSUs. IC Role / Device Role / Timing Role: Primary temperature sensor feeding thermal throttling logic; updates every 27.5 ms in high-priority mode. Use Value: Enables dynamic fan speed control and overtemperature shutdown before silicon damage occurs. | Use Scenario: CPU/GPU hotspot monitoring and chassis ambient sensing in thin-client laptops. IC Role / Device Role / Timing Role: Secondary thermal node alongside embedded controller; communicates via shared I²C bus at 400 kHz. Use Value: Reduces thermal margin requirements by ±0.25°C accuracy, allowing higher sustained clock frequencies. |
| Battery Pack Temperature Sensing | Enterprise Storage Enclosure Monitoring |
Use Scenario: Cell-level temperature acquisition in Li-ion battery packs for EV charging stations. IC Role / Device Role / Timing Role: Distributed sensor on battery module PCB; operates in low-power mode (2.7 μA avg) between samples. Use Value: Prevents thermal runaway by triggering cutoff when any cell exceeds THIGH threshold (e.g., 60°C). | Use Scenario: Hotspot detection across SAS/SATA drive bays and backplane connectors in NAS arrays. IC Role / Device Role / Timing Role: Bus-addressed node (A0=A1=A2=GND → 0x48) reporting to BMC via SMBus. Use Value: Supports predictive maintenance by correlating temperature rise rate with drive failure probability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMP75CDR | Lower accuracy (±2°C max), no NIST traceability, fixed 11-bit resolution (0.125°C), SOIC-8 only | Limited to cost-sensitive consumer electronics; lacks ALERT interrupt and SMBus Reset | Select when budget constraints outweigh precision needs and board space allows SOIC-8 |
| LM75BIMM/NOPB | ±2°C max accuracy, 9-bit resolution (0.5°C), no programmable conversion rate, 8-pin VSSOP only | Suitable for basic ambient sensing; no I³C compatibility or thermal drift compensation | Choose for legacy LM75 drop-in where firmware cannot be updated and accuracy >±1°C is acceptable |
Compared with TMP75CDR and LM75BIMM/NOPB, the TMP1075DSGT delivers 4× finer resolution, 8× better typical accuracy, 32× more I²C address options, and verified NIST-traceable calibration - making it the only choice for industrial-grade thermal protection requiring long-term stability and minimal design iteration.
Availability
TMP1075DSGT is available at Aetrix Electronics and suitable for power-supply thermal monitoring, PC/notebook thermal management, and battery pack temperature sensing requiring stable component supply across automotive qualification cycles, industrial temperature ranges, and extended product lifecycles.
Supply support for TMP1075DSGT 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 and embedded processing technologies, with decades of leadership in precision sensing and low-power interface solutions.
The TMP1075 product line targets high-reliability thermal management in computing, industrial automation, and energy infrastructure - designed specifically to replace legacy LM75-family sensors while adding NIST-traceable accuracy, I³C readiness, and ultra-low quiescent current.
FAQ
What is the operating temperature range for the TMP1075DSGT?
The TMP1075DSGT is specified for operation from −55°C to +125°C. This full industrial range is guaranteed for the DSG (WSON-8) package variant, with ±0.25°C typical accuracy maintained across −55°C to 125°C and ±1°C maximum accuracy from −40°C to +110°C. The device undergoes 100% production testing within this range using NIST-traceable equipment.
Does the TMP1075DSGT support I³C bus coexistence?
Yes, the TMP1075DSGT supports coexistence on I³C mixed fast-mode buses. It incorporates a 50 ns spike filter on both SCL and SDA pins per Section 6.9 of the datasheet, enabling reliable operation alongside I³C masters and targets without signal integrity degradation or false interrupts.
How many I²C addresses does the TMP1075DSGT support?
The TMP1075DSGT supports up to 32 unique I²C addresses via hardware configuration of A0, A1, and A2 pins. Each pin accepts GND, V+, SDA, or SCL (A2 accepts only GND/V+), yielding 32 distinct 7-bit addresses (0x48–0x67). This is confirmed in Table 7-2 and Section 7.3.2.2 of the official datasheet.
What is the resolution and output format of the TMP1075DSGT temperature reading?
The TMP1075DSGT provides 12-bit temperature resolution (0.0625°C per LSB) in two's-complement format stored across two read-only bytes. Only the upper 12 bits are valid; the lower 4 bits are zero. After power-up, the temperature register reads 0°C until the first conversion completes, as defined in Section 7.3.1 and Table 7-1.
Is the TMP1075DSGT pin-compatible with the LM75?
Yes, the TMP1075DSGT is pin-compatible with the LM75 in SOIC-8, VSSOP-8, and WSON-8 packages. The DSG package (TMP1075DSGT) matches the LM75's 8-pin WSON footprint and pinout exactly, enabling direct PCB replacement without layout changes - a key claim validated in Section 3 and Figure 5-3 of the datasheet.
TMP1075DSGT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -55°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 1.7V ~ 5.5V
- Resolution:
- 12 b
- Features:
- One-Shot, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±1°C (±2°C)
- Test Condition:
- -40°C ~ 75°C (-55°C ~ 125°C)
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-WSON (2x2)
TMP1075DSGT FAQ
1.How can I place an order for TMP1075DSGT through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP1075DSGT 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 TMP1075DSGT reliable?
The price and inventory of TMP1075DSGT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP1075DSGT is usually 5 days.
3.What payment methods are accepted for TMP1075DSGT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP1075DSGT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP1075DSGT?
TMP1075DSGT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP1075DSGT 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 TMP1075DSGT?
For technical support, including TMP1075DSGT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP1075DSGT requirements.
6.How does Aetrix verify that TMP1075DSGT is sourced from the original manufacturer or authorized distributors?
All TMP1075DSGT 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 TMP1075DSGT meets industry standards.
7.What is the process for return or replacement of TMP1075DSGT?
All TMP1075DSGT units undergo pre-shipment inspection (PSI). If there is an issue with TMP1075DSGT, 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 TMP1075DSGT part is unused and in its original packaging.
Return procedure for TMP1075DSGT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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