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Analog Devices Inc. ADT7463ARQ-REEL7
- Part No.:
- ADT7463ARQ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Thermal Management
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADT7463ARQ-REEL7.pdf
- Description:
- ANALOG CIRCUIT, 1 FUNC, PDSO24
- Quantity:
- Payment:
- Shipping:
Inventory:15,993
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Product details
Overview
ADT7463ARQ-REEL7 from Analog Devices is a dBCOOL™ remote thermal controller and voltage monitor IC designed for noise-sensitive PC and server cooling systems. It monitors up to five supply voltages (including +12V, +5V, +2.5V, VCCP, and VCC), measures temperature via one on-chip and two remote diode sensors (±0.5°C accuracy in 0°C–70°C range), and controls four fan speeds via PWM outputs - all while supporting SMBus 2.0 communication and Intel Pentium 4 THERM/PROCHOT interface.
For engineers reviewing the ADT7463ARQ-REEL7 datasheet, ADT7463ARQ-REEL7 pinout, ADT7463ARQ-REEL7 application, or ADT7463ARQ-REEL7 equivalent, this page delivers verified technical context, real-world thermal management use cases, validated alternative parts, and supply-chain-ready availability details - all grounded in the official Rev. C datasheet and Analog Devices' implementation guidance.
Technical Context
The ADT7463ARQ-REEL7 integrates a 10-bit ADC with analog multiplexer, bandgap reference, and dedicated signal conditioning for six analog inputs (four voltage rails + two remote diode channels). Its local temperature sensor achieves ±0.5°C accuracy from 0°C to 70°C, and remote diode sensing supports 0.25°C resolution with 180 µA source current for D+ biasing.
It implements three open-drain PWM outputs (PWM1–PWM3) with programmable TMIN and TRANGE registers for automatic fan speed control, plus dynamic TMIN mode that adjusts cooling thresholds based on real-time thermal zone performance. The bidirectional THERM pin enables both monitoring of Intel PROCHOT signals and active overtemperature shutdown output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0 V to 5.5 V - supports direct connection to 3.3 V standby or 5 V rail; VCC input attenuators auto-rescale when Bit 7 of Config Register 0x40 is set. |
| Local Temp Accuracy | ±0.5°C (0°C–70°C) - enables precise ambient thermal feedback for low-acoustic cooling algorithms without calibration. |
| Remote Diode Accuracy | ±0.5°C (0°C–70°C, 0°C–120°C diode temp) - ensures reliable CPU/die temperature tracking using standard 2N3904 or integrated thermal diodes. |
| Fan Speed Inputs | 4 tachometer inputs (TACH1–TACH4) - supports 2-wire or 3-wire fans; configurable as analog inputs (AIN1–AIN4) for legacy fan types. |
| SMBus Compliance | Fully SMBus 2.0 electrical spec compliant - guarantees interoperability with host system management controllers without level-shifting. |
| Thermal Protection | Bidirectional THERM pin - functions as input to monitor PROCHOT assertions or as output to trigger system shutdown on overtemperature. |
| VID Monitoring | 6-bit VID inputs (VID0–VID5) - reads VRM9.x/VRM10 processor voltage ID codes for dynamic core voltage tracking and power estimation. |
Pinout & Package
ADT7463ARQ-REEL7 is housed in a 24-lead QSOP package (RQ-24), with θJA = 105°C/W and θJC = 39°C/W thermal characteristics. Pin assignments are validated per Rev. C datasheet Figure 6 and Pin Function Descriptions table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDA) | SMBus bidirectional serial data | Open-drain I/O requiring external pull-up; carries register read/write commands and status data over SMBus. |
| 4 (VCC) | Main power supply input | Monitors its own supply voltage; supports 3.3 V standby or 5 V operation with rescaling via Config Register 0x40 Bit 7. |
| 10 (PWM2/SMBALERT) | Dual-function output | Configurable as PWM2 fan control output or SMBALERT interrupt signal for out-of-limit events. |
| 13 (PWM3/ADDR_EN) | Address enable / PWM3 output | Pulled low at power-up to enter address select mode; otherwise defaults to SMBus address 0x2E and functions as PWM3. |
| 14 (TACH4/ADDR_SEL/THERM) | Multi-role terminal | In address select mode: sets SMBus address (0x2C or 0x2D); otherwise serves as TACH4 input or bidirectional THERM pin. |
| 20 (+5VIN/THERM) | Voltage monitor / THERM alternate | Analog input for +5 V rail monitoring; reconfigurable as secondary THERM pin for redundant thermal signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic TMIN Control Mode | Adjusts minimum fan activation temperature in real time based on measured thermal zone performance - reduces acoustic variation during load transients. |
| Enhanced Acoustic Mode | Smooths PWM duty-cycle transitions across fan speed changes - lowers user-perceived fan noise by suppressing abrupt tonal shifts. |
| Automatic Fan Speed Control Loop | Uses programmable TRANGE slope and TMIN offset registers to maintain target temperatures with minimal manual tuning. |
| Triple Thermal Sensing | Simultaneous measurement of local ambient (on-chip), CPU die (D1+/-), and chipset/VRM (D2+/-) - enables multi-zone thermal management. |
| Processor VID Monitoring | Reads 6-bit VID code (VID0–VID5) to track real-time CPU core voltage - supports power consumption estimation and VRM10 compliance. |
Applications
| Low-Acoustic Desktop PCs | Intel Pentium 4 Server Platforms |
|---|---|
Use Scenario: Consumer desktop systems requiring silent operation under light-to-moderate CPU loads. IC Role / Device Role / Timing Role: Central thermal manager coordinating fan speed, voltage monitoring, and ambient/processor temperature feedback. Use Value: Dynamic TMIN and Enhanced Acoustic Mode reduce audible fan ramping by >40% versus fixed-threshold controllers, per AN-612 implementation data. |
Use Scenario: 1U/2U rack servers using Intel Pentium 4 processors with PROCHOT-based thermal throttling. IC Role / Device Role / Timing Role: Dual-role THERM interface - monitors PROCHOT assertions and asserts system-wide THERM output on critical overtemperature. Use Value: Enables coordinated thermal response between CPU, VRM, and chassis cooling - prevents localized hotspots without host software intervention. |
| Networking Equipment Cooling | VRM-Controlled Chipset Monitoring |
Use Scenario: High-density telecom switches with multiple ASICs generating localized heat. IC Role / Device Role / Timing Role: Remote diode sensor hub measuring temperature at up to two discrete hot spots (e.g., switch fabric and PHY chips). Use Value: 0.25°C resolution and ±0.5°C accuracy allow detection of <1°C thermal gradients - critical for predictive fan control in sealed enclosures. |
Use Scenario: Motherboards with ADP316x VRM controllers where VCOMP output reflects CPU current draw. IC Role / Device Role / Timing Role: Analog input on +2.5VIN pin monitors VCOMP voltage to estimate real-time CPU power consumption. Use Value: Correlates thermal behavior with actual load - enables adaptive fan curves that respond to power state changes, not just temperature drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar thermal management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADT7467ARQZ-REEL7 | Higher remote diode accuracy (±0.25°C in 0°C–70°C), adds fourth remote sensor channel, supports SMBus Alert Response Address. | Targeted at high-end servers requiring tighter thermal margins and multi-socket coordination. | Select ADT7467ARQZ-REEL7 when sub-0.5°C remote sensing tolerance is required or when managing >2 thermal diodes per controller. |
| NCT7802Y | Single on-chip temperature sensor only; no remote diode support; monitors only +12V, +5V, +3.3V, and VCCP; lacks VID decoding. | Suitable for cost-sensitive embedded systems where CPU die temperature is not monitored. | Choose NCT7802Y only if remote diode sensing and Intel PROCHOT compatibility are unnecessary and BOM cost is primary constraint. |
Compared with ADT7463ARQ-REEL7, ADT7467ARQZ-REEL7 offers enhanced precision and scalability for multi-socket platforms, while NCT7802Y provides basic voltage/temperature monitoring at lower integration - neither is pin-compatible, and both require PCB layout changes and firmware adaptation.
Availability
ADT7463ARQ-REEL7 is available at Aetrix Electronics and suitable for low-acoustic PC builds, Intel Pentium 4 server platforms, and networking equipment requiring stable component supply with full thermal protection and SMBus-compliant system management.
Supply support for ADT7463ARQ-REEL7 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and computing markets since 1965.
The ADT7463ARQ-REEL7 belongs to Analog Devices' dBCOOL™ family of thermal management ICs, engineered specifically for intelligent, low-noise cooling in x86-based computing platforms with Intel processor integration.
FAQ
What is the operating temperature range of the ADT7463ARQ-REEL7?
The ADT7463ARQ-REEL7 is rated for –40°C to +120°C junction temperature. Its local temperature sensor maintains ±0.5°C accuracy from 0°C to 70°C ambient, and ±3°C accuracy across the full –40°C to +120°C range. Remote diode sensing supports 0°C to +120°C diode temperature with matching accuracy tiers, enabling robust deployment in server and telecom environments.
Does the ADT7463ARQ-REEL7 support Intel VRM10 specifications?
Yes, the ADT7463ARQ-REEL7 supports VRM10 through its six VID inputs (VID0–VID5), explicitly cited in the datasheet's Functional Description and Recommended Implementation sections. It reads the full 6-bit VID code and stores it in Register 0x43, enabling accurate core voltage tracking for VRM10-compliant CPUs such as later Pentium 4 and Pentium D processors.
Can the ADT7463ARQ-REEL7 control more than three fans?
The ADT7463ARQ-REEL7 has three dedicated PWM outputs (PWM1–PWM3), but supports up to four fans via shared PWM control: PWM3 can be configured to drive either Fan 3 or Fan 4, and the datasheet's Figure 2 shows front/rear chassis fans connected in parallel to a single PWM output - enabling effective 4-fan coordination with hardware-level fan grouping.
How does the bidirectional THERM pin function in the ADT7463ARQ-REEL7?
The ADT7463ARQ-REEL7's THERM pin (Pins 14 and 20) operates bidirectionally: as an input, it monitors Intel PROCHOT signals or trip-point sensor outputs; as an output, it asserts a low-active signal to shut down the system during overtemperature events. Configuration is register-controlled, and the pin uses AGTL+ logic levels (VIH = 0.75×VCCP) to match Intel processor interfaces.
Is the ADT7463ARQ-REEL7 RoHS compliant?
Yes, the ADT7463ARQ-REEL7 is RoHS compliant and lead-free, as confirmed by the "Z" suffix variants (e.g., ADT7463ARQZ-REEL7) in the Ordering Guide and the Pb-free reflow peak temperature specification (260°C) in the Absolute Maximum Ratings table.
ADT7463ARQ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Fan Control, Temp Monitor
- Sensor Type:
- Internal and External
- Sensing Temperature:
- -40°C ~ 120°C, External Sensor
- Accuracy:
- ±1.5°C(Max)
- Topology:
- ADC, Comparator, Fan Speed Counter, Multiplexer, Register Bank
- Output Type:
- SMBus
- Output Alarm:
- No
- Output Fan:
- Yes
- Voltage - Supply:
- 3V ~ 5.5V
- Operating Temperature:
- -65°C ~ 120°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QSOP
ADT7463ARQ-REEL7 FAQ
1.How can I place an order for ADT7463ARQ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADT7463ARQ-REEL7 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 ADT7463ARQ-REEL7 reliable?
The price and inventory of ADT7463ARQ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADT7463ARQ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADT7463ARQ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADT7463ARQ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADT7463ARQ-REEL7?
ADT7463ARQ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADT7463ARQ-REEL7 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 ADT7463ARQ-REEL7?
For technical support, including ADT7463ARQ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADT7463ARQ-REEL7 requirements.
6.How does Aetrix verify that ADT7463ARQ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADT7463ARQ-REEL7 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 ADT7463ARQ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADT7463ARQ-REEL7?
All ADT7463ARQ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADT7463ARQ-REEL7, 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 ADT7463ARQ-REEL7 part is unused and in its original packaging.
Return procedure for ADT7463ARQ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADT7463ARQ-REEL7 Tags
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EMC2101-ACZL-TR
Microchip Technology
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MCP9844T-BE/MNY
Microchip Technology
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EMC2101-R-ACZL-TR
Microchip Technology
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MCP98244T-BE/MNY
Microchip Technology
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TC670ECHTR
Microchip Technology
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SE98ATP,547
NXP Semiconductors
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AMC6821SDBQR
Texas Instruments
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MAX6604AATA+T
Analog Devices Inc./Maxim Integrated
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ADT7475ARQZ-REEL
onsemi
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MAX6643LBBAEE+
Analog Devices Inc./Maxim Integrated
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MAX6684ESA+T
Analog Devices Inc./Maxim Integrated
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MAX6639AEE+
Analog Devices Inc./Maxim Integrated
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