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NXP Semiconductors SA56004ATK,118
- Part No.:
- SA56004ATK,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Analog and Digital Output
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
SA56004ATK,118.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8HVSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,148
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Product details
Overview
SA56004ATK,118 from NXP Semiconductors is an SMBus/I²C-compatible 11-bit remote/local digital temperature sensor with dual overtemperature alarms (ALERT and T_CRIT), ±1 °C remote diode accuracy, and programmable conversion rate (0.0625–26 Hz) for thermal monitoring in server CPU subsystems.
For engineers reviewing the SA56004ATK,118 datasheet, SA56004ATK,118 pinout, SA56004ATK,118 application, or SA56004ATK,118 equivalent, this device delivers precise dual-channel thermal sensing with factory-trimmed remote accuracy, open-drain interrupt outputs, SMBus timeout support, and HVSON8 packaging optimized for high-density server PCB layouts.
Technical Context
The SA56004ATK,118 integrates a Σ-Δ A/D converter with separate local and remote sensing paths, supporting diode-connected transistors (e.g., 2N3904/2N3906) or microprocessor substrate PNP junctions. Its architecture includes dedicated offset registers for remote calibration and independent HIGH/LOW/T_CRIT threshold registers per channel.
It implements SMBus 2.0 protocol compliance with TIMEOUT functionality, ALERT mask control (bit 7 of CON register), and RUN/STOP software standby mode reducing supply current to <10 µA. The device uses two's complement 11-bit format (LSB = 0.125 °C) for temperature data and 8-bit format (LSB = 1.0 °C) for T_CRIT setpoints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Resolution | 0.125 °C (11-bit two's complement output for local/remote channels) |
| Remote Accuracy | ±1 °C at −40 °C to +125 °C range, factory trimmed for diode junction sensing |
| Supply Voltage | 3.0 V to 3.6 V - undervoltage lockout prevents erroneous readings below threshold |
| Interface | SMBus 2.0 and I²C Standard/Fast-mode compatible - supports ARA response and timeout |
| Conversion Rate | Programmable from 0.0625 Hz to 26 Hz - default 16 Hz (CR = 08h) after power-on reset |
| Operating Range | −40 °C to +125 °C ambient - validated for server motherboard and CPU thermal management |
| Output Types | Dual open-drain interrupts: ALERT (configurable as comparator/interrupt/SMBus ARA) and T_CRIT (critical shutdown trigger) |
Pinout & Package
HVSON8 package (SOT782-1): plastic thermal-enhanced very thin small outline, no leads, 3 mm × 3 mm × 0.85 mm body, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | 3.0–3.6 V DC supply; powers internal circuitry and diode bias current source |
| D+ | Diode anode current source | Provides 10 µA constant current to forward-bias external thermal diode or transistor junction |
| D− | Diode cathode current sink | Completes remote diode measurement path; enables accurate ΔVBE sensing |
| T_CRIT | Critical temperature alarm output | Open-drain active-LOW signal - triggers fan activation or system shutdown when local/remote exceeds programmed T_CRIT |
| GND | Power ground reference | Common return path for VDD, D+, D−, and internal analog/digital blocks |
| ALERT | General temperature alert output | Open-drain active-LOW interrupt - indicates out-of-range local/remote temperature per HIGH/LOW thresholds |
| SDATA | I²C/SMBus bidirectional data line | Open-drain interface requiring external pull-up; carries command/data during read/write cycles |
| SCLK | I²C/SMBus clock input | Master-generated clock; synchronizes all serial bus transactions with internal timing logic |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmed SMBus address | 1001 000 (binary) - enables up to eight SA56004X devices on same bus without conflict |
| Remote diode offset correction | 11-bit programmable offset register (RTOHB/RTOLB) - compensates for parasitic resistance and diode non-ideality |
| Configurable interrupt behavior | ALERT mode register (AM) selects interrupt vs. comparator operation - avoids spurious re-triggering in noisy systems |
| Latch-up immunity | Tested to JEDEC JESD78 (>100 mA) - ensures robustness in industrial/server environments with transient ESD events |
| Thermal hysteresis control | T_CRIT hysteresis register (TH) sets 1–32 °C hysteresis - prevents oscillation during critical temperature transitions |
Applications
| Server CPU Thermal Monitoring | Data Center Rack Cooling Control |
|---|---|
|
Use Scenario: Real-time junction temperature tracking of multi-core Xeon/EPYC processors using integrated substrate PNP diodes. IC Role / Device Role / Timing Role: Remote channel measures ΔVBE across CPU die diode; local channel monitors sensor die temperature for self-calibration. Use Value: Enables dynamic fan speed control and throttling decisions with ±1 °C remote accuracy, preventing thermal runaway while maximizing performance. |
Use Scenario: Coordinating cooling fans across 42U rack based on aggregated temperature inputs from multiple blade servers. IC Role / Device Role / Timing Role: SA56004ATK,118 provides SMBus-addressable, time-synchronized temperature data to rack management controller via shared bus. Use Value: Eight unique slave addresses allow daisy-chained deployment without address conflicts; T_CRIT output directly drives relay-based fan banks. |
| Industrial PLC Thermal Protection | High-Performance Workstation Management |
|
Use Scenario: Protecting programmable logic controllers operating in harsh ambient conditions (−40 °C to +85 °C). IC Role / Device Role / Timing Role: Local sensor monitors ambient PCB temperature; remote channel tracks heatsink-mounted power MOSFET junction via discrete diode. Use Value: Undervoltage lockout prevents false alarms during brownout; ALERT output interfaces directly with PLC interrupt input for deterministic response. |
Use Scenario: Thermal supervision of GPU/CPU dual-die configurations in AI workstations with tight thermal budgets. IC Role / Device Role / Timing Role: Dual-channel sensing feeds real-time data to BIOS/firmware for adaptive voltage-frequency scaling (AVFS). Use Value: Programmable conversion rate (down to 0.0625 Hz) minimizes SMBus traffic during idle periods; 11-bit resolution captures fine-grained thermal gradients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar remote/local digital temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM86IMM/NOPB | Same SO8/TSSOP8 pinout; identical 11-bit resolution and ±1 °C remote accuracy; lacks HVSON8 option and T_CRIT hysteresis register | Designed for legacy desktop motherboards; no thermal pad for enhanced heat dissipation in dense server layouts | Select LM86IMM/NOPB only if SO8/TSSOP8 footprint and National Semiconductor compatibility are required; SA56004ATK,118 preferred for new HVSON8 designs. |
| MAX6657ESA+ | Shares SMBus interface and ALERT/T_CRIT outputs; remote accuracy ±2 °C (vs. ±1 °C); operates up to 5.5 V (wider VDD range) | Targeted at general-purpose instrumentation; less optimized for high-speed CPU diode sensing due to slower conversion rates | Choose MAX6657ESA+ when wider supply range or legacy Maxim design continuity is critical; SA56004ATK,118 offers superior remote accuracy and thermal package for compute-intensive applications. |
Compared with LM86IMM/NOPB and MAX6657ESA+, the SA56004ATK,118 uniquely combines HVSON8 thermal efficiency, factory-trimmed ±1 °C remote accuracy, and programmable T_CRIT hysteresis-making it optimal for next-generation server thermal management where layout density and precision are co-constrained.
Availability
SA56004ATK,118 is available at Aetrix Electronics and suitable for server thermal management, data center cooling control, and industrial PLC protection requiring stable component supply across extended temperature ranges.
Supply support for SA56004ATK,118 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in mixed-signal sensor ICs and embedded processing.
The SA56004ATK,118 belongs to NXP's precision analog sensor product line, engineered specifically for high-reliability thermal monitoring in enterprise computing infrastructure where accuracy, SMBus interoperability, and thermal package performance are mission-critical.
FAQ
What is the remote temperature accuracy specification for SA56004ATK,118?
The SA56004ATK,118 achieves ±1 °C remote diode temperature accuracy across −40 °C to +125 °C, enabled by factory trimming and supported by programmable remote offset registers (RTOHB/RTOLB) for post-assembly calibration against known thermal sources.
Does SA56004ATK,118 support both SMBus and I²C protocols?
Yes, SA56004ATK,118 is fully compatible with SMBus 2.0 (including TIMEOUT and ARA features) and I²C Standard-mode (100 kHz) and Fast-mode (400 kHz); its open-drain SDATA/SCLK pins require external 10 kΩ pull-ups per SMBus specification.
What package type is used for SA56004ATK,118 and why is it significant?
SA56004ATK,118 uses the HVSON8 (SOT782-1) package: a leadless 3 mm × 3 mm thermal-enhanced outline with exposed pad. This enables superior heat dissipation in high-power server PCBs and saves board space versus SO8/TSSOP8 alternatives.
How does the T_CRIT output function in SA56004ATK,118?
The T_CRIT output of SA56004ATK,118 is an open-drain active-LOW signal activated when either local or remote temperature exceeds its independently programmable T_CRIT threshold register value; it directly drives cooling fans or initiates hardware shutdown sequences.
Can SA56004ATK,118 be used with diode-connected transistors like the 2N3904?
Yes, SA56004ATK,118 explicitly supports diode-connected NPN transistors (e.g., 2N3904) and PNP transistors (e.g., 2N3906) via its D+/D− terminals, delivering ±1 °C accuracy when configured with appropriate offset compensation and PCB layout practices.
SA56004ATK,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Digital, Local/Remote
- Sensing Temperature - Local:
- -40°C ~ 125°C
- Sensing Temperature - Remote:
- -40°C ~ 125°C
- Output Type:
- I2C/SMBus
- Voltage - Supply:
- 3V ~ 5.5V
- Resolution:
- 10 b
- Features:
- Output Switch, Programmable Limit
- Accuracy - Highest (Lowest):
- ±2°C (±3°C)
- Test Condition:
- 60°C ~ 100°C (-40°C ~ 125°C)
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-HVSON (3x3)
SA56004ATK,118 FAQ
1.How can I place an order for SA56004ATK,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA56004ATK,118 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 SA56004ATK,118 reliable?
The price and inventory of SA56004ATK,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA56004ATK,118 is usually 5 days.
3.What payment methods are accepted for SA56004ATK,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA56004ATK,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA56004ATK,118?
SA56004ATK,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA56004ATK,118 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 SA56004ATK,118?
For technical support, including SA56004ATK,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA56004ATK,118 requirements.
6.How does Aetrix verify that SA56004ATK,118 is sourced from the original manufacturer or authorized distributors?
All SA56004ATK,118 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 SA56004ATK,118 meets industry standards.
7.What is the process for return or replacement of SA56004ATK,118?
All SA56004ATK,118 units undergo pre-shipment inspection (PSI). If there is an issue with SA56004ATK,118, 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 SA56004ATK,118 part is unused and in its original packaging.
Return procedure for SA56004ATK,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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