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NXP Semiconductors SA56004CDP,118
- Part No.:
- SA56004CDP,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Analog and Digital Output
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
SA56004CDP,118.pdf
- Description:
- SENSOR DIGITAL -40C-125C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,279
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Product details
Overview
SA56004CDP,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 from 0.0625 Hz to 26 Hz. It monitors microprocessor thermal diodes or discrete transistors (e.g., 2N3904/2N3906) in server thermal management systems.
For engineers reviewing the SA56004CDP,118 datasheet, SA56004CDP,118 pinout, SA56004CDP,118 application, or SA56004CDP,118 equivalent, this device delivers precise local/remote sensing, factory-trimmed diode interface, SMBus timeout support, and pin compatibility with LM86/MAX6657/ADM1032 for drop-in thermal monitoring upgrades in high-density computing platforms.
Technical Context
The SA56004CDP,118 integrates a Σ-Δ A/D converter with dual input paths: on-chip local sensor and external diode junction via D+/D− terminals. Its register-mapped architecture supports independent configuration of local/remote high/low thresholds and T_CRIT limits, with status flags (LHIGH, RHIGH, LCRIT, RCRIT) reflecting real-time alarm conditions.
It implements SMBus 2.0 protocol compliance including TIMEOUT detection, ALERT interrupt latching (maskable via CON[7]), and ARA response capability. The device operates in free-running mode (default) or software standby (<10 µA quiescent current), with one-shot conversion initiation available during standby.
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, factory-trimmed for PNP/NPN diode junctions |
| Supply voltage | 3.0 V to 3.6 V - undervoltage lockout prevents erroneous readings below threshold |
| Interface standard | SMBus 2.0 and I²C Standard/Fast-mode compatible with open-drain SDATA/SCLK |
| Conversion rate | Programmable 0.0625 Hz to 26 Hz - enables dynamic power/performance trade-off in thermal control loops |
| Operating temperature | −40 °C to +125 °C ambient - qualified for server, workstation, and industrial embedded environments |
| Device address options | 8 factory-programmed 7-bit SMBus addresses - supports multi-sensor thermal mapping 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 | 3.0–3.6 V DC rail; powers internal circuitry and diode bias current source |
| D+ | Diode anode current source | Provides 10 µA constant current to forward-bias external PNP substrate or NPN transistor base-emitter junction |
| D− | Diode cathode current sink | Completes remote diode measurement path; requires connection to emitter (PNP) or collector (NPN) |
| T_CRIT | Critical temperature alarm output | Open-drain, active-low signal - triggers fan activation, warning, or system shutdown when local/remote exceeds T_CRIT threshold |
| GND | Power ground reference | Common return for VDD, analog sensing, and digital I/O; critical for noise immunity in mixed-signal operation |
| ALERT | General temperature alert output | Open-drain, active-low interrupt - indicates local/remote out-of-range condition per programmed HIGH/LOW thresholds |
| SDATA | SMBus/I²C bidirectional data line | Open-drain data bus requiring external pull-up; supports read/write access to all configuration, status, and temperature registers |
| SCLK | SMBus/I²C clock input | Master-generated clock (up to 400 kHz Fast-mode); synchronizes register reads/writes and conversion timing |
Key Features
| Feature | Design Value |
|---|---|
| Remote diode offset calibration | Adjustable via RTOHB/RTOLB registers - corrects for transistor-specific thermal parasitics and PCB trace resistance |
| Programmable T_CRIT hysteresis | Configurable 1–16 °C via TH register - prevents oscillation during critical temperature transitions in cooling control loops |
| Fault detection logic | Integrated OPEN (diode disconnect), BUSY, and limit-violation flags - enables robust diagnostics without host polling overhead |
| Low-power standby mode | <10 µA supply current with SMBus active - maintains register state and allows wake-on-command for battery-backed or energy-sensitive systems |
| Pin compatibility | Direct replacement for LM86, MAX6657/8, ADM1032 in TSSOP8 footprint - eliminates PCB redesign in legacy thermal upgrade paths |
Applications
| Server CPU Thermal Monitoring | Laptop GPU Hot-Spot Sensing |
|---|---|
Use Scenario: Real-time tracking of multi-core processor die temperature using integrated substrate PNP diode. IC Role / Device Role / Timing Role: Remote temperature sensor with 0.125 °C resolution and ±1 °C accuracy, interfacing via SMBus to BMC/IPMI controller. Use Value: Enables dynamic frequency scaling and fan speed control within 38 ms conversion latency, preventing thermal throttling in high-TDP workloads. |
Use Scenario: Monitoring discrete 2N3904 transistor mounted near GPU VRM to detect localized hot spots. IC Role / Device Role / Timing Role: Dual-channel sensor measuring both local ambient (on-die) and remote component junction temperature. Use Value: Provides early overtemperature warning before VRM MOSFET failure, supporting graceful thermal shutdown with <10 µA standby current. |
| Industrial PLC Cabinet Control | Network Switch ASIC Thermal Management |
Use Scenario: Ambient and enclosure temperature supervision in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Local sensor for cabinet air temperature; remote channel for heatsink-mounted diode on power supply IC. Use Value: Supports JESD78 latch-up immunity (>100 mA) and −40 °C to +125 °C operation for reliable deployment in unconditioned industrial environments. |
Use Scenario: Multi-point thermal mapping across switch ASIC die using multiple SA56004CDP,118 devices on shared SMBus. IC Role / Device Role / Timing Role: Slave device with unique 7-bit address (1001 010 for SA56004CDP); provides T_CRIT-triggered interrupt to switch fabric controller. Use Value: Eight address options allow up to eight sensors per bus, enabling per-lane thermal profiling without address collision or bus contention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar remote/local temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM86IMMX/NOPB | Same TSSOP8 package and pinout; identical 11-bit resolution but ±2 °C remote accuracy (vs. ±1 °C for SA56004CDP,118) | Lacks SMBus TIMEOUT support and remote offset calibration registers | Preferred where cost sensitivity outweighs need for highest diode accuracy or advanced fault handling |
| MAX6657ESA+ | Identical pinout and SMBus interface; 12-bit resolution but only ±2.5 °C remote accuracy and no T_CRIT hysteresis register | Supports wider 3.0–5.5 V supply range but lacks OPEN fault detection and diode bias current trimming | Selected when operating above 3.6 V or requiring higher raw resolution without factory calibration |
Compared with LM86IMMX/NOPB and MAX6657ESA+, the SA56004CDP,118 offers superior remote diode accuracy (±1 °C), integrated SMBus TIMEOUT protection, and programmable T_CRIT hysteresis - making it optimal for mission-critical server thermal control where reliability and precision outweigh minor cost differences.
Availability
SA56004CDP,118 is available at Aetrix Electronics and suitable for server thermal management, industrial PLC cabinet monitoring, and network switch ASIC cooling applications requiring stable component supply across extended product lifecycles.
Supply support for SA56004CDP,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 design and embedded processing.
The SA56004X family was designed specifically for high-accuracy, multi-point thermal monitoring in dense computing platforms - delivering factory-trimmed diode interface performance and SMBus reliability for data center and enterprise infrastructure.
FAQ
What is the remote diode measurement accuracy of the SA56004CDP,118?
The SA56004CDP,118 achieves ±1 °C remote diode temperature accuracy across −40 °C to +125 °C, enabled by factory trimming of the D+/D− current source and internal compensation. This specification applies to standard PNP substrate diodes or discrete NPN/PNP transistors like the 2N3904 and 2N3906 when properly biased and routed per layout guidelines in the SA56004CDP,118 datasheet.
Does the SA56004CDP,118 support SMBus TIMEOUT functionality?
Yes, the SA56004CDP,118 fully complies with SMBus 2.0 specifications including TIMEOUT detection. If SCLK remains low for more than 35 ms, the device resets its internal state machine and releases ALERT/T_CRIT outputs, preventing bus lockup in noisy or faulty system environments - a key reliability feature not present in basic I²C temperature sensors.
How many unique SMBus addresses does the SA56004CDP,118 support?
The SA56004CDP,118 has eight factory-programmed 7-bit SMBus slave addresses (1001 000 to 1001 111). As shown in Table 4 of the SA56004CDP,118 datasheet, SA56004CDP corresponds to address 1001 010, enabling up to eight SA56004CDP,118 devices on a single SMBus without address conflict or external hardware modification.
Can the SA56004CDP,118 measure both local and remote temperatures simultaneously?
The SA56004CDP,118 performs sequential local and remote conversions in free-running mode, completing both measurements every ~38 ms at default 16 Hz rate. While not truly simultaneous, the tight interleaving ensures correlated thermal snapshots - critical for detecting thermal gradients between CPU die and heatsink in server applications using the SA56004CDP,118.
What is the purpose of the T_CRIT hysteresis register in the SA56004CDP,118?
The T_CRIT hysteresis register (address 21h) configures 1–16 °C hysteresis for the T_CRIT output, preventing rapid toggling during critical temperature transitions - for example, when a cooling fan ramps up and causes localized temperature rebound. This hysteresis is programmable independently of ALERT thresholds and directly impacts system stability in closed-loop thermal control using the SA56004CDP,118.
SA56004CDP,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:
- Last Time Buy
- 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
SA56004CDP,118 FAQ
1.How can I place an order for SA56004CDP,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA56004CDP,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 SA56004CDP,118 reliable?
The price and inventory of SA56004CDP,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA56004CDP,118 is usually 5 days.
3.What payment methods are accepted for SA56004CDP,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA56004CDP,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA56004CDP,118?
SA56004CDP,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA56004CDP,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 SA56004CDP,118?
For technical support, including SA56004CDP,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA56004CDP,118 requirements.
6.How does Aetrix verify that SA56004CDP,118 is sourced from the original manufacturer or authorized distributors?
All SA56004CDP,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 SA56004CDP,118 meets industry standards.
7.What is the process for return or replacement of SA56004CDP,118?
All SA56004CDP,118 units undergo pre-shipment inspection (PSI). If there is an issue with SA56004CDP,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 SA56004CDP,118 part is unused and in its original packaging.
Return procedure for SA56004CDP,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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