TMP411CDGKT - ±1°C Remote/Local Temp Sensor MSOP-8 | TI
MPN: TMP411CDGKT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.65 | $1.65 |
| 10 | $1.48 | $14.80 |
| 100 | $1.28 | $128.00 |
| 500 | $1.12 | $560.00 |
| 1,000 | $0.98 | $980.00 |
Drop-in alternatives for TMP411CDGKT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TMP411ADGKT
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
TMP411BDGKT
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
TMP411EDGKT
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
TMP411ADGKR
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.38 / Unit
View Datasheet →TMP411CQDGKRQ1
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.18 / Unit
View Datasheet →TMP431ADGKT
✅ Drop-In📋 Reference alternative (not in catalog)
TMP411CDGKT Maximum Ratings & Electrical Characteristics
| Sensor Type | Remote and Local Temperature Sensor |
| Remote Temperature Accuracy | ±1°C (TMP411C) |
| Sensing Temperature Range | -40°C ~ 125°C |
| Resolution | 11 bit (0.0625°C) |
| Supply Voltage | 2.7 V ~ 5.5 V |
| Interface | SMBus (2-wire serial) |
| Output Type | Digital, SMBus; ALERT and THERM outputs |
| N-Factor Correction | Yes (programmable non-ideality) |
| Series Resistance Correction | Yes |
| Package / Case | 8-VSSOP / MSOP-8 (DGK), 3.00 mm width |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C |
| Supplier Device Package | DGK-8 |
| Packaging | Cut Tape |
| RoHS Status | Compliant |
TMP411CDGKT Pin Configuration
| Pin 1 | V+ — Power supply, 2.7 V to 5.5 V |
| Pin 2 | D+ — Remote diode anode input |
| Pin 3 | D- — Remote diode cathode input |
| Pin 4 | THERM — THERM hardware throttle/fault output (open-drain) |
| Pin 5 | GND — Ground |
| Pin 6 | ALERT — SMBus alert/interrupt output (open-drain) |
| Pin 7 | SCL — SMBus serial clock |
| Pin 8 | SDA — SMBus serial data |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TMP411CDGKT is suitable for 6 applications: CPU / Processor Junction Monitoring, FPGA / ASIC Thermal Management, Server and Data Center Thermal Monitoring, Industrial Control and Automation, Telecom and Networking Equipment, Battery-Powered and Portable Instrumentation.
CPU / Processor Junction Monitoring
The TMP411CDGKT is purpose-built for monitoring the junction temperature of CPUs, GPUs, and SoCs by measuring the on-die sense transistor. The ±1°C remote accuracy and 0.0625°C resolution give the host controller early warning before thermal limits are reached, and the N-factor correction adapts the sensing algorithm to each vendor's process transistor - critical when one board design must support multiple processor sources. Series-resistance cancellation removes the error introduced by D+/D- trace resistance, so the sensor can be placed centimeters away from the socket without accuracy loss. The THERM output can directly drive hardware throttling circuits, providing a last-line thermal protection path independent of firmware. Place the DGK-8 device near the processor power delivery to track the hottest local environment while keeping the diode loop short and tightly coupled.
Recommended
FPGA / ASIC Thermal Management
FPGAs and ASICs commonly expose a diode-connected sensing transistor precisely so external monitors such as the TMP411CDGKT can track die temperature. The 11-bit, 0.0625°C resolution supports fine-grained fan and clock-throttle control curves in reconfigurable computing and telecom line-card designs. Because the TMP411C compensates both N-factor and series resistance, the same PCB footprint works across FPGA families from different vendors - reducing BOM variants. The ALERT output drives an SMBus interrupt to the management controller for early warning, while THERM provides autonomous hardware protection if the host hangs. Supply the sensor from the clean 3.3 V auxiliary rail (2.7 V to 5.5 V range) and keep the D+/D- pair away from switching regulator nodes to preserve the ±1°C remote accuracy specification.
Recommended
Server and Data Center Thermal Monitoring
In server motherboards and storage backplanes, dozens of thermal zones feed the BMC (Baseboard Management Controller); the TMP411CDGKT serves CPU, GPU, and hot-swap converter zones through its SMBus interface at 2.7 V to 5.5 V supply. The 0.0625°C resolution enables fine PID fan-speed control, cutting acoustic noise and fan power, while the ALERT/THERM dual-fault architecture lets the BMC log a pre-warning and still allow an autonomous hardware shutdown path. The ±1°C remote accuracy keeps thermal guardbands tight, protecting performance headroom in dense chassis. Because all TMP411 grades share the same MSOP-8 footprint and register map, procurement can second-source accuracy grades (A/B/C/E) without any board respin - a key supply-chain benefit for long-life server platforms.
Recommended
Industrial Control and Automation
Industrial PLC I/O modules, motor drives, and edge controllers need both board-level and power-device temperature visibility. The TMP411CDGKT covers -40°C to +125°C, matching the extended industrial ambient range, and its SMBus output integrates directly with microcontroller-based control systems without an ADC channel. The remote channel monitors IGBT/MOSFET-adjacent diode sensors or heatsink-mounted discrete diodes, while the local channel tracks the controller board ambient. With 2.7 V to 5.5 V operation, it runs from either 3.3 V or 5 V industrial rails. For designs heading to automotive-adjacent industrial equipment, the pin-compatible TMP411CQDGKRQ1 offers AEC-Q100 qualification on the same footprint, simplifying cross-market platform reuse.
Recommended
Telecom and Networking Equipment
Optical modules, switch line cards, and radio units combine high heat density with strict reliability requirements. The TMP411CDGKT monitors laser driver and DSP die temperatures through their diode outputs; its 0.0625°C resolution supports the fine control loops needed for laser wavelength and bias stability, while the ±1°C accuracy keeps calibration tables compact. The SMBus 2.7 V to 5.5 V interface connects to the card's management MCU, and ALERT provides an interrupt-driven fault path for hot-swap protection. Series-resistance correction is valuable in telecom layouts where the remote diode loop crosses connectors or long traces. The MSOP-8 (DGK) 3.00 mm body fits the tight vertical envelopes of SFP/QSFP module sites.
Recommended
Battery-Powered and Portable Instrumentation
Portable test instruments and battery-pack electronics benefit from the TMP411CDGKT's low-voltage 2.7 V operation and SMBus digital output that eliminates external ADC components. The local channel monitors the instrument enclosure ambient, and the remote channel tracks the processor or power-converter die inside the same housing. The programmable limits plus ALERT output let the host sleep between conversions and wake only on out-of-range events, conserving battery budget. With 0.0625°C resolution, charge-control and display-backlight algorithms can react smoothly to small temperature changes. The 3.00 mm-wide MSOP-8 package suits handheld PCB real estate, and the shared TMP411 footprint allows easy migration to the higher-accuracy A grade or the automotive Q1 variant as product requirements evolve.
Recommended
Recommended Products Summary
Engineering reference data for TMP411CDGKT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TMP411ADGKT | TMP411EDGKT | TMP411CQDGKRQ1 | TMP431ADGKT |
|---|---|---|---|---|---|
| Package | MSOP-8 (DGK), 3.00 mm | MSOP-8 (DGK) - same | MSOP-8 (DGK) - same | MSOP-8 (DGK) - same | MSOP-8 (DGK) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Remote Accuracy | ±1°C (C grade) | ±1°C class, tighter A grade | ±1°C class, E grade | ±1°C (C grade, AEC-Q100) | ±1°C class (A grade) |
| Sensing Range | -40°C ~ +125°C | -40°C ~ +125°C | -40°C ~ +125°C | -40°C ~ +125°C | [DATA_NEEDED] |
| Resolution | 11 bit (0.0625°C) | 11 bit | 11 bit | 11 bit | [DATA_NEEDED] |
| Supply Voltage | 2.7 V ~ 5.5 V | 2.7 V ~ 5.5 V | 2.7 V ~ 5.5 V | 2.7 V ~ 5.5 V | [DATA_NEEDED] |
| N-Factor / Series-R Correction | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | [DATA_NEEDED] |
| AEC-Q100 Qualified | No | No | No | Yes | [DATA_NEEDED] |
Key Differentiators
- Programmable N-factor correction adapts to any silicon vendor (vs TMP75AIDGKR)
- Automotive AEC-Q100 pin-compatible variant exists (vs TMP411CQDGKRQ1)
- Series-resistance cancellation relaxes placement constraints (vs TMP431ADGKT)
Design Notes
Route D+ and D- as a closely coupled pair (spacing under 0.2 mm where possible) away from switching-regulator nodes and clock lines. The series-resistance correction cancels loop resistance, but excessive capacitance pickup on an unterminated pair still degrades remote accuracy. Use a 0.1 uF bypass capacitor within 2 mm of the V+ pin and a solid ground return under the sensor. Two to three layers of ground plane under the DGK-8 footprint minimize local thermal gradients between the sensor die and the measurement target.
Always verify the remote diode N-factor against the target CPU/FPGA datasheet and program the N-factor correction register accordingly - the default setting matches a typical transistor (N=1.008) and can produce several degrees of systematic error on non-typical processes. Both ALERT and THERM are open-drain outputs and require pull-up resistors to the logic rail; leaving them floating makes faults invisible to the host. Do not exceed the 2.7 V to 5.5 V supply range during hot-plug transients.
Estimated: supply the TMP411CDGKT from a clean 3.3 V rail rather than a heavily loaded 5 V rail; with typical sub-milliamp quiescent current the sensor contributes negligible power dissipation, so self-heating is dominated by PCB thermal gradients rather than the IC. Decouple with 0.1 uF ceramic plus optional 1 uF bulk if the rail is shared with noisy digital loads. On shared SMBus buses, keep total bus capacitance within SMBus limits to preserve timing margins across the full temperature range.
Compliance Information
RoHS compliance per TI product page and distributor listings for the active TMP411 family. The AEC-Q100 qualified variant is TMP411CQDGKRQ1; the standard TMP411CDGKT is not automotive qualified.
