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Texas Instruments TMP75CIDGKT
- Part No.:
- TMP75CIDGKT
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TMP75CIDGKT.pdf
- Description:
- SENSOR DIGITAL -55C-125C 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,689
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Product details
Overview
TMP75CIDGKT from Texas Instruments is a 12-bit digital temperature sensor with two-wire (I²C/SMBus) interface, ±0.25°C accuracy from 0°C to +70°C, 0.0625°C resolution, and operates from 1.4 V to 3.6 V supply. It integrates a BJT-based thermal sensing element and on-chip ADC for direct PCB-local temperature measurement in thermal management systems.
For engineers reviewing the TMP75CIDGKT datasheet, TMP75CIDGKT pinout, TMP75CIDGKT application, or TMP75CIDGKT equivalent, this device supports programmable overtemperature alert thresholds, one-shot and continuous conversion modes, shutdown current as low as 0.3 μA, and up to eight devices on a shared bus via A0–A2 address pins - critical for server thermal monitoring, power supply protection, and embedded thermostat control.
Technical Context
The TMP75CIDGKT implements a band-gap-referenced bipolar junction transistor (BJT) as its core temperature-sensing element, digitized by a 12-bit successive-approximation ADC. Its output is left-justified, twos-complement formatted data with 0.0625°C/LSB scaling, directly readable via I²C-compatible serial interface.
It supports both comparator-mode and interrupt-mode ALERT pin operation, configurable via TM and POL bits in the Configuration register. The device features integrated spike-suppression filters and Schmitt triggers on SDA/SCL, enabling reliable operation at bus frequencies up to 3.4 MHz in high-speed mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.4 V to 3.6 V - enables direct integration into 1.8-V and 3.3-V systems without level-shifting. |
| Temperature Range | –55°C to +125°C - supports industrial, automotive under-hood, and telecom equipment environments. |
| Accuracy | ±0.25°C (0°C to +70°C), ±0.5°C (–20°C to +85°C), ±1°C (–55°C to +125°C) - factory-calibrated, no system-level calibration required. |
| Resolution | 0.0625°C (12-bit) - sufficient for fine-grained thermal throttling and closed-loop compensation. |
| Conversion Time | 27 ms (typ) - determines minimum response latency for overtemperature events in real-time protection. |
| Quiescent Current | 15 μA (typ, inactive), 95 μA (active, 3.4 MHz bus) - balances responsiveness and battery life in portable or always-on systems. |
| Shutdown Current | 0.3 μA (typ) - extends battery runtime during idle periods in IoT sensor nodes and wearables. |
| Bus Address Options | 8 unique addresses via A0/A1/A2 pins - allows multi-sensor thermal mapping on single I²C bus without address conflict. |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm), thermally optimized for PCB-mounted local temperature sensing with low thermal resistance through package leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Address select input | Configures LSB of 7-bit I²C slave address; tied to GND or VS to set device address (1001000–1001111). |
| A1 | Address select input | Configures middle bit of I²C slave address; enables up to 8 devices on same bus without external logic. |
| A2 | Address select input | Configures MSB of I²C slave address; supports scalable thermal monitoring across multiple board zones. |
| ALERT | Open-drain output | Active-low (default) overtemperature flag; drives external interrupt or latch circuit; requires external pull-up. |
| GND | Ground reference | Primary return path for analog and digital circuits; also serves as thermal conduction path to PCB. |
| SCL | Serial clock input | Master-generated clock signal; supports fast-mode (400 kHz) and high-speed mode (up to 3.4 MHz). |
| SDA | Serial data I/O | Open-drain bidirectional line; transmits temperature data, config registers, and acknowledges master commands. |
| VS | Power supply input | Accepts 1.4–3.6 V; powers internal regulator, ADC, oscillator, and interface logic; low dropout design. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-calibrated accuracy | Eliminates need for end-system calibration; reduces test time and BOM cost in volume production. |
| Programmable ALERT thresholds | TLOW/THIGH registers enable custom thermal trip points for system-specific shutdown or throttling logic. |
| One-shot conversion mode | Reduces average power consumption by triggering measurement only when needed - ideal for event-driven sensing. |
| SMBus timeout protection | Auto-resets interface if SCL/SDA held low >22 ms - prevents bus lockup in noisy industrial environments. |
| Low-voltage compatibility | Operates down to 1.4 V supply - supports energy-harvesting and coin-cell-powered applications. |
| Thermal sensing via die temperature | Measures local PCB temperature directly through metal lead thermal path - no external thermistor or layout overhead. |
Applications
| Server Thermal Management | Power Supply Protection |
|---|---|
Use Scenario: Real-time monitoring of CPU, GPU, and VRM temperatures in rack-mounted servers. IC Role / Device Role / Timing Role: Local die-temperature sensor providing 0.0625°C-resolution readings every 80 ms to host BMC via I²C. Use Value: Enables dynamic fan speed control and early overtemperature shutdown before silicon damage occurs. |
Use Scenario: Monitoring heatsink and MOSFET junction temperature in AC/DC and DC/DC converters. IC Role / Device Role / Timing Role: Stand-alone thermostat using ALERT pin to trigger power-stage disable before thermal runaway. Use Value: Prevents catastrophic failure by enforcing hard thermal limits independent of host controller availability. |
| Industrial Motor Control | Consumer Electronics Thermal Throttling |
Use Scenario: Embedded temperature monitoring inside motor driver modules for HVAC and robotics. IC Role / Device Role / Timing Role: Direct PCB-mount sensor measuring driver IC case temperature with ±0.5°C accuracy over –20°C to +85°C. Use Value: Supports predictive maintenance and torque derating based on verified thermal history. |
Use Scenario: Thermal regulation in gaming laptops and set-top boxes during sustained compute loads. IC Role / Device Role / Timing Role: Host-controlled sensor reading temperature every 12 Hz to adjust GPU/CPU clocks via OS thermal policy. Use Value: Maintains user experience by preventing sudden shutdown while maximizing performance within safe margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCT75MUA | Same pinout (VSSOP-8), identical register map, but rated only to +125°C (not –55°C); ±1°C accuracy over full range vs. ±0.25°C in 0°C–70°C for TMP75CIDGKT. | Limited to commercial-grade applications; lacks extended low-temp capability for outdoor or automotive use. | Select NCT75MUA only if operating ambient stays above –20°C and higher accuracy is not required. |
| ADT75ARMZ | SOIC-8 only (no VSSOP-8 option); identical 12-bit resolution and I²C interface, but 3.0–5.5 V supply range - incompatible with 1.8-V systems. | Requires level-shifting or separate LDO in low-voltage designs; larger footprint increases PCB area cost. | Choose ADT75ARMZ only when legacy 5-V infrastructure exists and space constraints allow SOIC-8 placement. |
Compared with NCT75MUA and ADT75ARMZ, the TMP75CIDGKT uniquely combines VSSOP-8 compactness, 1.4–3.6 V operation, ±0.25°C accuracy in the most common ambient range, and –55°C capability - making it the optimal choice for space-constrained, battery-aware, and wide-temperature industrial designs.
Availability
TMP75CIDGKT is available at Aetrix Electronics and suitable for server thermal management, power supply protection, and industrial motor control requiring stable component supply across long production lifecycles.
Supply support for TMP75CIDGKT 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 connectivity technologies, with decades of expertise in precision sensing and low-power design.
The TMP75C product line was designed specifically for high-accuracy, low-voltage thermal monitoring in space-constrained and energy-sensitive applications - emphasizing factory calibration, SMBus robustness, and seamless integration into existing I²C infrastructure.
FAQ
What is the operating temperature range of the TMP75CIDGKT?
The TMP75CIDGKT operates across –55°C to +125°C. Its accuracy is specified as ±0.25°C from 0°C to +70°C, ±0.5°C from –20°C to +85°C, and ±1°C over the full range. This makes the TMP75CIDGKT suitable for harsh environments including industrial controls, telecom base stations, and automotive under-hood applications where wide thermal margins are essential.
Does the TMP75CIDGKT require external components for basic operation?
No, the TMP75CIDGKT requires no external components for fundamental temperature sensing. Only two external pull-up resistors on SDA and SCL lines are needed for I²C bus operation. The internal band-gap sensor, 12-bit ADC, voltage regulator, and oscillator are fully integrated - simplifying layout and reducing BOM count compared to discrete thermistor+ADC solutions.
How does the ALERT pin function on the TMP75CIDGKT?
The ALERT pin on the TMP75CIDGKT operates in two configurable modes: comparator mode (TM = 0, default) or interrupt mode (TM = 1). In comparator mode, ALERT asserts when temperature ≥ THIGH and clears only after falling below TLOW - providing hysteresis. In interrupt mode, ALERT remains asserted until any register is read. Polarity is set via the POL bit, supporting active-high or active-low logic interfacing.
Can the TMP75CIDGKT be used with a 1.8-V microcontroller I²C interface?
Yes, the TMP75CIDGKT is explicitly designed for 1.8-V operation and is pin- and register-compatible with legacy NCT75 and ADT75 sensors. Its VIH threshold is 0.7×VS (≥1.26 V at 1.8 V), and VOL is ≤0.2×VS (≤0.36 V), ensuring reliable logic-level compatibility with standard 1.8-V GPIOs without level shifters.
What package type does the TMP75CIDGKT use, and why does it matter?
The TMP75CIDGKT uses the VSSOP-8 package (3.00 mm × 3.00 mm), which offers 35% smaller footprint than SOIC-8 while maintaining identical pinout and thermal performance. Its exposed pad-less construction and low thermal resistance through leads ensure accurate PCB-local temperature measurement - critical for thermal feedback in dense power electronics layouts.
TMP75CIDGKT 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:
- -55°C ~ 125°C
- Sensing Temperature - Remote:
- -
- Output Type:
- SMBus
- Voltage - Supply:
- 1.4V ~ 3.6V
- Resolution:
- 11 b
- Features:
- One-Shot, Output Switch, Programmable Limit, Shutdown Mode
- Accuracy - Highest (Lowest):
- ±1°C (±3°C)
- Test Condition:
- 0°C ~ 70°C (-55°C ~ 125°C)
- Operating Temperature:
- -55°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-VSSOP
TMP75CIDGKT FAQ
1.How can I place an order for TMP75CIDGKT through Aetrix?
Please submit a Request for Quotation (RFQ) for TMP75CIDGKT 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 TMP75CIDGKT reliable?
The price and inventory of TMP75CIDGKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMP75CIDGKT is usually 5 days.
3.What payment methods are accepted for TMP75CIDGKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMP75CIDGKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMP75CIDGKT?
TMP75CIDGKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMP75CIDGKT 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 TMP75CIDGKT?
For technical support, including TMP75CIDGKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMP75CIDGKT requirements.
6.How does Aetrix verify that TMP75CIDGKT is sourced from the original manufacturer or authorized distributors?
All TMP75CIDGKT 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 TMP75CIDGKT meets industry standards.
7.What is the process for return or replacement of TMP75CIDGKT?
All TMP75CIDGKT units undergo pre-shipment inspection (PSI). If there is an issue with TMP75CIDGKT, 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 TMP75CIDGKT part is unused and in its original packaging.
Return procedure for TMP75CIDGKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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