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NXP Semiconductors SA56004EDP,118
- Part No.:
- SA56004EDP,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
SA56004EDP,118.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,667
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Product details
Overview
SA56004EDP,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 rates from 0.0625 Hz to 26 Hz. It monitors microprocessor thermal diodes or discrete transistors (e.g., 2N3904/2N3906) in server motherboard thermal management systems.
For engineers reviewing the SA56004EDP,118 datasheet, SA56004EDP,118 pinout, SA56004EDP,118 application, or SA56004EDP,118 equivalent, key selection criteria include its TSSOP8 package, 3.0–3.6 V supply range, SMBus 2.0 timeout support, 8 factory-programmed slave addresses, and pin compatibility with LM86/MAX6657/ADM1032 for drop-in thermal monitoring upgrades.
Technical Context
The SA56004EDP,118 integrates a 11-bit Σ-Δ A/D converter with separate local and remote sensing paths, supporting simultaneous measurement of on-die temperature and external diode junctions. Its dual alarm architecture uses independent threshold registers for ALERT (configurable under/overtemp) and T_CRIT (critical shutdown trigger), both implemented as open-drain active-low outputs requiring external pull-ups.
It employs SMBus 2.0 protocol compliance with TIMEOUT functionality and supports I²C Standard/Fast-mode operation. The device features programmable offset correction for remote channel calibration, fault detection (diode open, A/D busy), and software standby mode with <10 µA quiescent current - all managed via an 8-bit configuration register and dedicated status register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Temperature Resolution | 11-bit output with 0.125 °C LSB for local/remote measurements - enables precise thermal margining in high-performance computing. |
| Remote Accuracy | ±1 °C at −40 °C to +125 °C - achieved via factory trimming, critical for CPU/GPU junction monitoring. |
| Supply Voltage | 3.0 V to 3.6 V - matches modern low-voltage server and embedded system rails without level-shifting. |
| Conversion Rate | Programmable from 0.0625 Hz to 26 Hz - allows dynamic trade-off between update latency and power consumption. |
| Interface Protocol | SMBus 2.0 compliant with TIMEOUT and ARA support - ensures robust multi-device bus arbitration in dense server environments. |
| Operating Temperature | −40 °C to +125 °C ambient - validated for industrial and server-grade thermal stress conditions. |
| Slave Addresses | 8 factory-programmed 7-bit addresses - enables up to eight SA56004EDP,118 sensors on one SMBus without address conflict. |
Pinout & Package
TSSOP8 package (SOT505-1): plastic thin shrink small outline, 8 leads, 3 mm body width, lead pitch 0.65 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 3.0–3.6 V; powers internal circuitry and diode bias current source. |
| D+ | Diode anode current source | Provides constant current to forward-bias external PNP or NPN diode junctions for remote sensing. |
| D− | Diode cathode current sink | Completes remote diode bias path; enables accurate ΔVBE measurement across transistor junctions. |
| T_CRIT | Critical temperature alarm output | Open-drain active-low signal used to trigger fan activation or system shutdown when local/remote exceeds T_CRIT threshold. |
| GND | Power ground reference | Common return for analog and digital sections; must be low-impedance for measurement stability. |
| ALERT | General temperature alert output | Open-drain active-low interrupt indicating local/remote temperature violation of HIGH/LOW thresholds. |
| SDATA | SMBus/I²C bidirectional data line | Open-drain interface requiring external 10 kΩ pull-up; supports multi-master arbitration and ARA response. |
| SCLK | SMBus/I²C clock input | Asynchronous clock input with external 10 kΩ pull-up; defines timing for register read/write operations. |
Key Features
| Feature | Design Value |
|---|---|
| Remote diode offset correction | Configurable 11-bit offset register (RTOHB/RTOLB) compensates for PCB trace resistance and transistor non-idealities. |
| Undervoltage lockout (UVLO) | Prevents erroneous temperature readings during power ramp-up by disabling conversion until VDD stabilizes above threshold. |
| Programmable T_CRIT hysteresis | 5-bit hysteresis register (TH) sets 1–31 °C hysteresis to prevent oscillation during critical thermal events. |
| Latch-up immunity | Tested per JEDEC JESD78 exceeding 100 mA - ensures reliability in noisy industrial and server power environments. |
| Software standby mode | Run/Stop bit in Configuration Register reduces supply current to <10 µA while retaining register state and SMBus responsiveness. |
Applications
| Server CPU Thermal Monitoring | Laptop GPU Junction Sensing |
|---|---|
Use Scenario: Real-time thermal tracking of multi-core Xeon/EPYC processors using integrated substrate PNP diodes. IC Role / Device Role / Timing Role: Remote temperature sensor interfacing directly with CPU die diode; provides 0.125 °C resolution readings every 62.5 ms (16 Hz default). Use Value: Enables dynamic frequency scaling and throttling decisions within <100 ms latency, preventing thermal runaway during sustained workloads. |
Use Scenario: Compact thermal feedback loop for discrete GPU packages (e.g., NVIDIA RTX series) using 2N3904-connected diodes on heatsink baseplates. IC Role / Device Role / Timing Role: Local + remote dual-channel sensor delivering synchronized die and heatsink temperature data via SMBus to EC firmware. Use Value: Supports adaptive fan curve control with ±1 °C remote accuracy, reducing acoustic noise while maintaining <85 °C GPU junction limit. |
| Industrial PLC Cabinet Management | Network Switch ASIC Thermal Protection |
Use Scenario: Ambient and component-level temperature supervision inside IP65-rated programmable logic controller enclosures operating at −40 °C to +70 °C. IC Role / Device Role / Timing Role: Local sensor monitors ambient air; remote channel tracks power MOSFET junction via external diode, both sampled at 1 Hz for energy efficiency. Use Value: Triggers forced-air cooling or process derating before cabinet internal temperature exceeds 65 °C, extending component lifetime. |
Use Scenario: High-density 1RU switch with 12x 10GBase-T PHYs generating localized hotspots near ASIC packages. IC Role / Device Role / Timing Role: Multiple SA56004EDP,118 units deployed per ASIC zone, each providing independent ALERT/T_CRIT signals to BMC via shared SMBus. Use Value: Enables per-zone thermal shutdown without system-wide reset, preserving packet forwarding on unaffected ports during localized overheating. |
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 |
|---|---|---|---|
| LM86IMMX/NOPB | Same 8-pin SOIC/TSSOP footprint and pinout; identical 11-bit resolution and SMBus interface but lacks T_CRIT hysteresis register and UVLO. | Valid for legacy designs where T_CRIT hysteresis is not required and board layout rework is prohibited. | Select LM86IMMX/NOPB only if existing design uses LM86 and requires minimal validation; SA56004EDP,118 offers enhanced reliability features. |
| MAX6657AESA+ | Pin-compatible 8-pin SOIC variant; supports same 3.0–3.6 V range and ±1 °C remote accuracy but uses different SMBus command set and lacks remote offset calibration. | Suitable for cost-sensitive industrial controllers where firmware already supports MAX6657 register map and diode compensation is handled externally. | Choose MAX6657AESA+ when migrating from MAX6657-based platforms; SA56004EDP,118 provides superior diagnostic capability via status register fault flags. |
Compared with LM86IMMX/NOPB and MAX6657AESA+, the SA56004EDP,118 delivers unique value through factory-trimmed remote accuracy, programmable T_CRIT hysteresis, and integrated undervoltage lockout - making it optimal for new server, telecom, and industrial designs demanding higher thermal safety margins and reduced firmware complexity.
Availability
SA56004EDP,118 is available at Aetrix Electronics and suitable for server motherboard thermal management, laptop GPU junction sensing, industrial PLC cabinet monitoring, and network switch ASIC protection requiring stable component supply and long-term lifecycle support.
Supply support for SA56004EDP,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 specializing in secure connectivity solutions for automotive, industrial, and communication infrastructure markets.
The SA56004X family was designed specifically for high-reliability thermal monitoring in multi-processor server and workstation platforms, emphasizing SMBus robustness, remote diode accuracy, and fail-safe alarm signaling.
FAQ
What is the remote temperature sensing accuracy of the SA56004EDP,118?
The SA56004EDP,118 achieves ±1 °C remote diode temperature accuracy across −40 °C to +125 °C, verified via factory trimming against calibrated thermal diodes such as substrate PNPs in microprocessors or discrete 2N3904/2N3906 transistors. This specification applies to the SA56004EDP,118 under standard SMBus read conditions with proper PCB layout and external diode selection.
Does the SA56004EDP,118 support I²C communication in addition to SMBus?
Yes, the SA56004EDP,118 is fully compatible with I²C Standard-mode (100 kHz) and Fast-mode (400 kHz) protocols in addition to SMBus 2.0. Its SDATA and SCLK pins implement open-drain signaling with built-in timeout detection, allowing seamless integration into mixed-protocol systems where the SA56004EDP,118 serves as a universal thermal sensor node.
How does the T_CRIT output differ from the ALERT output on the SA56004EDP,118?
The T_CRIT output on the SA56004EDP,118 is a dedicated critical alarm signal activated only when local or remote temperature exceeds the independently programmable T_CRIT threshold register value, typically used for emergency shutdown. In contrast, the ALERT output responds to violations of configurable HIGH/LOW thresholds and supports comparator, interrupt, or SMBus ARA modes - offering broader thermal event coverage than the SA56004EDP,118's T_CRIT function alone.
Can the SA56004EDP,118 operate with a 5.0 V supply voltage?
No, the SA56004EDP,118 is specified for 3.0 V to 3.6 V operation only. Applying 5.0 V exceeds absolute maximum ratings and may cause permanent damage. The SA56004EDP,118's internal regulator and diode bias circuitry are optimized for low-voltage server and embedded rails; use of 5 V is incompatible and unsupported for the SA56004EDP,118.
Is the SA56004EDP,118 pin-compatible with the LM86, MAX6657, and ADM1032?
Yes, the SA56004EDP,118 is pin-compatible with the National Semiconductor LM86, Maxim MAX6657/6658, and Analog Devices ADM1032 in TSSOP8 packaging. Its pin assignments (VDD, D+, D−, T_CRIT, GND, ALERT, SDATA, SCLK) match these devices exactly, enabling direct replacement in existing layouts without PCB modification - a key feature confirmed for the SA56004EDP,118 in NXP's official documentation.
SA56004EDP,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:
- Active
- 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
SA56004EDP,118 FAQ
1.How can I place an order for SA56004EDP,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA56004EDP,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 SA56004EDP,118 reliable?
The price and inventory of SA56004EDP,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA56004EDP,118 is usually 5 days.
3.What payment methods are accepted for SA56004EDP,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA56004EDP,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA56004EDP,118?
SA56004EDP,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA56004EDP,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 SA56004EDP,118?
For technical support, including SA56004EDP,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA56004EDP,118 requirements.
6.How does Aetrix verify that SA56004EDP,118 is sourced from the original manufacturer or authorized distributors?
All SA56004EDP,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 SA56004EDP,118 meets industry standards.
7.What is the process for return or replacement of SA56004EDP,118?
All SA56004EDP,118 units undergo pre-shipment inspection (PSI). If there is an issue with SA56004EDP,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 SA56004EDP,118 part is unused and in its original packaging.
Return procedure for SA56004EDP,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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