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NXP Semiconductors SA56004FDP,118
- Part No.:
- SA56004FDP,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
SA56004FDP,118.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,224
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Product details
Overview
SA56004FDP,118 from NXP Semiconductors is an SMBus-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 substrates and embedded controllers.
For engineers reviewing the SA56004FDP,118 datasheet, SA56004FDP,118 pinout, SA56004FDP,118 application, or SA56004FDP,118 equivalent, this device delivers precise local/remote sensing across −40 °C to +125 °C, SMBus 2.0 timeout support, open-drain ALERT/T_CRIT outputs, and factory-trimmed 8-device address options for multi-sensor server thermal management.
Technical Context
The SA56004FDP,118 integrates a Σ-Δ A/D converter with dual sensing paths: on-chip bandgap local sensor (±2 °C) and external diode-connected transistor interface (e.g., 2N3904/2N3906) for remote junction measurement. Its register-mapped SMBus interface supports read/write access to 11-bit temperature data (0.125 °C LSB), offset correction, and independent HIGH/LOW/T_CRIT thresholds per channel.
Configuration is managed via an 8-bit CON register controlling RUN/STOP mode, ALERT masking, and T_CRIT activation logic; status reporting uses a dedicated SR register with individual flags for LCRIT, RCRIT, LHIGH, RHIGH, OPEN, and BUSY conditions - enabling deterministic interrupt handling without polling overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 11-bit (0.125 °C LSB) for local/remote temperature data; enables fine-grained thermal control in high-performance computing systems. |
| Accuracy | ±1 °C remote (diode junction), ±2 °C local (on-chip); factory-trimmed for reliable CPU/die temperature tracking without calibration. |
| Temp Range | −40 °C to +125 °C operating range; supports industrial and server-grade thermal environments including CPU hotspots and power stages. |
| Interface | SMBus 2.0 and I²C Standard/Fast-mode compatible; includes TIMEOUT protocol for bus fault recovery and robust multi-drop system integration. |
| Supply Voltage | 3.0 V to 3.6 V; matches modern low-voltage server and embedded power rails while maintaining undervoltage lockout protection. |
| Conversion Rate | Programmable from 0.0625 Hz to 26 Hz; allows dynamic trade-off between update latency and power consumption in thermal management loops. |
| Alert Outputs | Dual open-drain outputs: ALERT (configurable as interrupt/comparator) and T_CRIT (critical shutdown trigger); both require external pull-up resistors. |
| Device Address | Factory-programmed 7-bit SMBus address (1001 101 for SA56004FDP); enables up to eight sensors on one bus without address conflict. |
Pinout & Package
TSSOP8 package (SOT505-1), 3 mm body width, 0.65 mm pitch, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | 3.0–3.6 V power rail connection; internal UVLO prevents erroneous readings during brown-out conditions. |
| D+ | Diode current source (anode) | Provides constant current to forward-bias external PNP/NPN thermal diode; enables accurate remote junction sensing. |
| D− | Diode sink current (cathode) | Completes remote diode bias path; supports standard 2N3904/2N3906 and microprocessor substrate diodes. |
| T_CRIT | Critical temperature alarm output | Open-drain, active-low signal used to trigger fan activation, warning LEDs, or controlled system shutdown at user-defined threshold. |
| GND | Power ground reference | Common return path for analog and digital circuitry; must be low-impedance to maintain ADC accuracy and noise immunity. |
| ALERT | General temperature alert output | Open-drain, active-low interrupt indicating local/remote temperature exceeds HIGH/LOW limits; configurable as SMBus ARA response. |
| SDATA | SMBus/I²C bidirectional data line | Open-drain serial data interface requiring external pull-up; supports multi-master arbitration and clock stretching. |
| SCLK | SMBus/I²C clock input | Asynchronous clock input synchronized internally; requires external pull-up resistor for proper bus timing compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Remote diode offset correction | Programmable RTOHB/RTOLB registers compensate for PCB trace resistance and diode non-ideality, preserving ±1 °C accuracy across board variants. |
| Configurable alert behavior | ALERT Mode register (AM) selects interrupt vs. comparator operation - critical for compatibility with legacy SMBus controllers lacking ARA support. |
| Low-power standby mode | Software-controlled RUN/STOP bit reduces supply current to <10 μA during idle periods while retaining register state and SMBus responsiveness. |
| Diode open-circuit detection | Status register bit D2 (OPEN) flags disconnected remote diodes, preventing false thermal shutdowns and enabling automated hardware health checks. |
| T_CRIT hysteresis control | TH register sets 1–16 °C hysteresis to prevent oscillation during critical temperature transitions, ensuring stable fan or shutdown actuation. |
| Latch-up immunity | JEDEC JESD78 certified (>100 mA), ensuring robustness against transient ESD events in high-density server motherboard environments. |
Applications
| Server CPU Thermal Monitoring | Laptop System Management |
|---|---|
Use Scenario: Real-time tracking of multi-core processor die temperature using substrate PNP diode and local sensor for ambient compensation. IC Role / Device Role / Timing Role: Dual-channel temperature sensor providing synchronized local/remote measurements every 38–16,000 ms (configurable), feeding thermal control firmware. Use Value: Enables dynamic frequency scaling and fan speed control with ±1 °C remote accuracy, preventing thermal throttling while maximizing performance headroom. | Use Scenario: Compact thermal supervision of GPU, VRM, and battery zones in space-constrained notebook designs. IC Role / Device Role / Timing Role: SMBus slave device delivering 11-bit temperature data to EC (Embedded Controller) for coordinated cooling decisions. Use Value: TSSOP8 footprint minimizes PCB area; 3.3 V operation aligns with laptop power architecture; ALERT/T_CRIT outputs drive discrete MOSFET fan drivers directly. |
| Industrial PLC Temperature Interface | Test Equipment Calibration Reference |
Use Scenario: Monitoring heatsink and IGBT junction temperatures in motor drives and power converters within industrial control cabinets. IC Role / Device Role / Timing Role: Local sensor measures ambient cabinet temperature; remote channel reads diode-connected transistors on power modules for real-time thermal derating. Use Value: −40 °C to +125 °C rating ensures reliability in unconditioned enclosures; SMBus timeout prevents bus lockup during EMI events. | Use Scenario: High-stability temperature reference node in benchtop multimeters and environmental chambers requiring traceable thermal feedback. IC Role / Device Role / Timing Role: Precision local sensor (±2 °C) combined with calibrated remote diode path serves as secondary reference against primary RTD sensors. Use Value: Factory-trimmed accuracy and 0.125 °C resolution enable sub-degree verification; OTP address allows multiple units in automated test fixtures without address collision. |
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 |
|---|---|---|---|
| LM86IMX/NOPB | Same pinout, identical SMBus interface, but ±2 °C remote accuracy and no T_CRIT hysteresis register. | Lacks T_CRIT hysteresis control and remote offset correction; less suitable for critical shutdown scenarios requiring precise thermal margins. | Select LM86IMX/NOPB only when cost sensitivity outweighs need for ±1 °C remote accuracy and configurable hysteresis. |
| MAX6657ESA+ | Pin-compatible, same 8-pin SO package, but fixed 16 Hz conversion rate and no software standby mode. | No low-power standby capability; higher quiescent current limits use in battery-backed or energy-harvesting systems. | Choose MAX6657ESA+ where board layout re-use is mandatory and continuous 16 Hz sampling suffices for thermal response requirements. |
Compared with LM86IMX/NOPB and MAX6657ESA+, the SA56004FDP,118 provides superior remote accuracy (±1 °C vs. ±2 °C), programmable conversion rate (0.0625–26 Hz), and T_CRIT hysteresis control - making it optimal for thermally aggressive server and industrial applications demanding deterministic shutdown behavior.
Availability
SA56004FDP,118 is available at Aetrix Electronics and suitable for server thermal management, laptop system monitoring, and industrial PLC temperature sensing requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SA56004FDP,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 system-level thermal management.
The SA56004FDP,118 belongs to NXP's SA56004X family of SMBus temperature sensors, designed specifically for high-reliability thermal monitoring in multi-processor servers, embedded controllers, and power-constrained computing platforms.
FAQ
What is the remote temperature accuracy specification for SA56004FDP,118?
The SA56004FDP,118 achieves ±1 °C remote temperature accuracy when measuring diode-connected transistors (e.g., 2N3904/2N3906) or microprocessor substrate PNP junctions. This accuracy is factory-trimmed and maintained across the full −40 °C to +125 °C operating range without user calibration. Local on-chip sensing accuracy is ±2 °C.
Does SA56004FDP,118 support SMBus timeout functionality?
Yes, the SA56004FDP,118 implements full SMBus 2.0 timeout protocol compliance. This feature automatically resets the internal state machine if the SCLK line remains low for longer than the SMBus-defined timeout period (typically 35 ms), preventing bus lockup and enhancing system reliability in noisy industrial environments.
How many unique SMBus addresses does SA56004FDP,118 support?
The SA56004FDP,118 has a factory-programmed 7-bit SMBus slave address of 1001 101 (0x4D). It is part of the SA56004X family offering eight distinct address options (1001 000 to 1001 111), enabling up to eight SA56004X devices-including SA56004FDP,118-on a single SMBus without address conflict.
What package type is used for SA56004FDP,118?
The SA56004FDP,118 is supplied in the TSSOP8 package (SOT505-1), featuring an 8-lead, 3 mm body width, 0.65 mm pitch, and lead-free RoHS-compliant construction. This compact surface-mount package supports high-density PCB layouts typical in servers and portable electronics.
Can SA56004FDP,118 operate with a 3.3 V supply?
Yes, the SA56004FDP,118 operates within a 3.0 V to 3.6 V supply range, making it fully compatible with standard 3.3 V logic and power domains. Its undervoltage lockout (UVLO) circuit prevents erroneous temperature readings during power ramp-up or brown-out conditions, ensuring reliable initialization.
SA56004FDP,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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-TSSOP
SA56004FDP,118 FAQ
1.How can I place an order for SA56004FDP,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA56004FDP,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 SA56004FDP,118 reliable?
The price and inventory of SA56004FDP,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA56004FDP,118 is usually 5 days.
3.What payment methods are accepted for SA56004FDP,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA56004FDP,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA56004FDP,118?
SA56004FDP,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA56004FDP,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 SA56004FDP,118?
For technical support, including SA56004FDP,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA56004FDP,118 requirements.
6.How does Aetrix verify that SA56004FDP,118 is sourced from the original manufacturer or authorized distributors?
All SA56004FDP,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 SA56004FDP,118 meets industry standards.
7.What is the process for return or replacement of SA56004FDP,118?
All SA56004FDP,118 units undergo pre-shipment inspection (PSI). If there is an issue with SA56004FDP,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 SA56004FDP,118 part is unused and in its original packaging.
Return procedure for SA56004FDP,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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