My Inquiry
My Account
Analog Devices Inc. ADM1023ARQ-REEL7-AD
- Part No.:
- ADM1023ARQ-REEL7-AD
- Manufacturer:
- Analog Devices Inc.
- Category:
- Thermal Management
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
ADM1023ARQ-REEL7-AD.pdf
- Description:
- ACPI-COMPLIANT, HIGH ACCURACY MI
- Quantity:
- Payment:
- Shipping:
Inventory:760
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM1023ARQ-REEL7-AD from onsemi is a dual-channel SMBus-compatible digital temperature monitor IC designed for microprocessor thermal management. It provides 1°C local sensor accuracy and 0.125°C remote sensor resolution, supports programmable over/under-temperature limits, operates from 3 V to 5.5 V, and delivers <200 μA operating current at 0.25 conversions/sec - enabling precise thermal monitoring in Pentium III–based desktop and notebook systems.
For engineers reviewing the ADM1023ARQ-REEL7-AD datasheet, ADM1023ARQ-REEL7-AD pinout, ADM1023ARQ-REEL7-AD application, or ADM1023ARQ-REEL7-AD equivalent, key selection considerations include its QSOP-16 package, remote diode sensing architecture, SMBus ALERT interrupt capability, offset calibration registers for PCB trace compensation, and guaranteed ±1°C remote accuracy across 0°C–120°C.
Technical Context
The ADM1023ARQ-REEL7-AD integrates two independent ADC channels: one for on-chip temperature sensing and another for external PNP/NPN diode-based remote sensing using a ΔVBE measurement technique that cancels absolute base-emitter voltage variation. Its analog front-end includes biasing for D− above ground and optional 1000 pF noise filtering between D+ and D−.
It implements SMBus 2.0–compliant serial communication with open-drain SDATA/SCLK, programmable conversion rate (0.0625–4 Hz), standby mode (1–5 μA), and status-driven ALERT output that latches on limit violations. Register mapping supports real-time readback of local/remote values (8-bit and 11-bit formats), limit thresholds, configuration, and offset correction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Local Temp Accuracy | ±0.5°C (60°C–100°C); enables tighter thermal guard bands in CPU thermal throttling. |
| Remote Temp Resolution | 0.125°C (11-bit format); supports fine-grained fan speed control and hotspot detection. |
| Supply Voltage Range | 3.0 V to 5.5 V; compatible with legacy 3.3 V and 5 V system rails without level shifting. |
| Operating Current | 200 μA max at 0.25 conv/sec; allows continuous monitoring in power-constrained embedded systems. |
| SMBus Interface | 400 kHz clock, open-drain SDATA/SCLK, ALERT as interrupt or SMBus ALERT signal. |
| Temperature Range | −55°C to +125°C operating; supports industrial and extended-temperature computing environments. |
| Package | 16-lead QSOP (5.3 mm × 10.2 mm); surface-mount compatible with standard reflow profiles. |
Pinout & Package
ADM1023ARQ-REEL7-AD is housed in a 16-lead QSOP package with 0.65 mm lead pitch. Pin 1 is marked by a dot; pins 1, 5, 9, 13, and 16 are no-connect (NC). The device uses three-state address inputs (ADD0/ADD1) for SMBus slave addressing and features dedicated D+/D− terminals for remote diode connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 2) | Positive supply input | Accepts 3 V–5.5 V; undervoltage lockout activates below 2.7 V to prevent erroneous readings. |
| D+ / D− (Pins 3/4) | Remote diode interface | D− biased above GND via internal diode; supports discrete 2N3904/2N3906 or on-die PNP transistors. |
| ADD0 / ADD1 (Pins 10/6) | SMBus slave address bits | Three-state inputs; configure one of four possible addresses (0x18–0x1B) when pulled high/low or left floating. |
| ALERT (Pin 11) | Open-drain interrupt output | Asserts low on local/remote out-of-limit or open-circuit fault; serves as SMBus ALERT or system IRQ. |
| STBY (Pin 15) | Standby mode control | Pull low to enter 1–5 μA standby; pull high for active conversion and SMBus communication. |
| SDATA / SCLK (Pins 12/14) | SMBus bidirectional data/clock | Compliant with SMBus 2.0 timing; supports multi-master arbitration and packet error checking. |
Key Features
| Feature | Design Value |
|---|---|
| ΔVBE remote sensing | Eliminates need for per-unit VBE calibration; achieves ±1°C accuracy with Pentium III–class thermal diodes. |
| Programmable offset registers | 11-bit two's complement (Addresses 0x11/0x12) corrects PCB trace resistance and noise-induced errors on D+/D− lines. |
| Dual-channel limit comparison | Independent high/low thresholds for local and remote channels stored in nonvolatile registers; flags stored in STATUS register. |
| Open-circuit fault detection | Automatically identifies disconnected remote diode (bit 2 of STATUS register) and asserts ALERT to prevent false thermal shutdown. |
| One-shot conversion mode | Writing to Address 0x0F triggers single local+remote measurement; useful for wake-on-thermal-event or low-power polling. |
Applications
| Desktop Computers | Notebook Computers |
|---|---|
Use Scenario: Real-time CPU die temperature monitoring alongside chipset thermal management. IC Role / Device Role / Timing Role: Remote channel reads Pentium III substrate PNP diode; local channel monitors ADM1023ARQ-REEL7-AD junction temperature. Use Value: Enables dynamic fan speed control and thermal throttling with ±1°C remote accuracy, reducing system acoustic noise while maintaining safe operating margins. | Use Scenario: Compact thermal supervision for mobile CPUs and battery management ICs. IC Role / Device Role / Timing Role: Dual-sensor operation tracks both processor junction and ambient board temperature using integrated and discrete diodes. Use Value: 200 μA operating current and 1 μA standby support always-on thermal awareness without compromising battery life. |
| Smart Batteries | Industrial Controllers |
Use Scenario: Cell pack temperature monitoring during charge/discharge cycles in Li-ion battery packs. IC Role / Device Role / Timing Role: Remote channel interfaces with NTC or diode sensors on battery modules; local channel verifies sensor IC self-temperature. Use Value: Programmable overtemperature limits (e.g., 60°C cutoff) and ALERT-driven host interrupt enable fail-safe thermal shutdown before cell damage occurs. | Use Scenario: Thermal protection of PLC I/O modules and motor drive electronics in factory automation. IC Role / Device Role / Timing Role: Monitors heatsink temperature of power MOSFETs and FPGA junction temperature via remote diode. Use Value: −55°C to +125°C operating range and robust ESD rating (2000 V HBM) ensure reliable operation in harsh industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADM1021ARQZ-REEL7 | Legacy predecessor; 1°C remote resolution (vs. 0.125°C); no offset registers; identical QSOP-16 pinout. | Lacks fine-resolution remote sensing and PCB trace compensation; suitable only where ±1°C remote accuracy suffices. | Select ADM1021ARQZ-REEL7 only if legacy design reuse or cost sensitivity outweighs resolution and calibration needs. |
| LM94022QBIMG/NOPB | Single-channel analog output; 0.1°C accuracy; no SMBus interface; SOT-23-6 package. | Requires external ADC and microcontroller for digital processing; lacks ALERT interrupt and remote diode support. | Choose LM94022QBIMG/NOPB only for simple analog temperature feedback loops without digital bus integration. |
Compared with ADM1021ARQZ-REEL7, ADM1023ARQ-REEL7-AD adds critical remote resolution and calibration capability; compared with LM94022QBIMG/NOPB, it delivers full SMBus-integrated dual-channel digital monitoring in a drop-in-compatible footprint for CPU thermal management.
Availability
ADM1023ARQ-REEL7-AD is available at Aetrix Electronics and suitable for desktop computers, notebook computers, and smart batteries requiring stable component supply and long-term thermal monitoring reliability.
Supply support for ADM1023ARQ-REEL7-AD 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
onsemi is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.
The ADM1023ARQ-REEL7-AD belongs to onsemi's precision analog temperature sensor product line, engineered specifically for ACPI-compliant microprocessor thermal management in performance-critical computing platforms.
FAQ
What is the remote temperature accuracy specification for ADM1023ARQ-REEL7-AD?
The ADM1023ARQ-REEL7-AD guarantees ±1°C remote temperature accuracy over 60°C to 100°C ambient and diode temperatures, and ±3°C over the full 0°C to 120°C range. This is measured using a calibrated thermal diode matching Pentium III ideality factor (n = 1.008), with offset registers available to correct for PCB trace resistance and noise-induced errors.
Does ADM1023ARQ-REEL7-AD support negative temperature measurements?
No, ADM1023ARQ-REEL7-AD does not support negative temperature measurements on the remote channel. Its remote temperature data format starts at 0°C (0x0000 in 11-bit format), and attempting to measure below 0°C results in saturation at 0°C. For sub-zero capability, the ADM1021 series is recommended instead.
How does the ALERT output function in ADM1023ARQ-REEL7-AD?
The ALERT output of ADM1023ARQ-REEL7-AD is an open-drain logic signal that pulls low when any limit violation occurs (local/remote high/low) or when the remote diode is open-circuit. It functions as either a hardware interrupt to the host controller or as an SMBus ALERT signal, and remains latched until the underlying condition clears and the status register is read.
Can ADM1023ARQ-REEL7-AD be used with discrete transistors like 2N3904?
Yes, ADM1023ARQ-REEL7-AD supports discrete NPN/PNP transistors such as the 2N3904/2N3906 as remote temperature sensors. The device's ΔVBE measurement method eliminates the need for transistor-specific calibration, and the D− terminal's internal bias ensures proper operation even when the transistor collector is unconnected (base tied to collector).
What is the purpose of the offset registers in ADM1023ARQ-REEL7-AD?
The offset registers (Addresses 0x11 and 0x12) in ADM1023ARQ-REEL7-AD store an 11-bit two's complement value applied to the remote temperature reading to compensate for systematic errors - primarily PCB track resistance between the IC and remote diode, and high-frequency noise coupling. These registers default to zero and require explicit write to activate correction.
ADM1023ARQ-REEL7-AD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Temp Monitoring System (Sensor)
- Sensor Type:
- Internal and External
- Sensing Temperature:
- 0°C ~ 120°C, External Sensor
- Accuracy:
- ±1°C Local, ±3°C Remote
- Topology:
- ADC, Comparator, Multiplexer, Register Bank
- Output Type:
- SMBus
- Output Alarm:
- Yes
- Output Fan:
- No
- Voltage - Supply:
- 3V ~ 5.5V
- Operating Temperature:
- 0°C ~ 120°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
ADM1023ARQ-REEL7-AD FAQ
1.How can I place an order for ADM1023ARQ-REEL7-AD through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1023ARQ-REEL7-AD 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 ADM1023ARQ-REEL7-AD reliable?
The price and inventory of ADM1023ARQ-REEL7-AD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1023ARQ-REEL7-AD is usually 5 days.
3.What payment methods are accepted for ADM1023ARQ-REEL7-AD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1023ARQ-REEL7-AD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1023ARQ-REEL7-AD?
ADM1023ARQ-REEL7-AD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1023ARQ-REEL7-AD 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 ADM1023ARQ-REEL7-AD?
For technical support, including ADM1023ARQ-REEL7-AD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1023ARQ-REEL7-AD requirements.
6.How does Aetrix verify that ADM1023ARQ-REEL7-AD is sourced from the original manufacturer or authorized distributors?
All ADM1023ARQ-REEL7-AD 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 ADM1023ARQ-REEL7-AD meets industry standards.
7.What is the process for return or replacement of ADM1023ARQ-REEL7-AD?
All ADM1023ARQ-REEL7-AD units undergo pre-shipment inspection (PSI). If there is an issue with ADM1023ARQ-REEL7-AD, 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 ADM1023ARQ-REEL7-AD part is unused and in its original packaging.
Return procedure for ADM1023ARQ-REEL7-AD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM1023ARQ-REEL7-AD Tags
-
EMC2101-ACZL-TR
Microchip Technology
-
MCP9844T-BE/MNY
Microchip Technology
-
EMC2101-R-ACZL-TR
Microchip Technology
-
MCP98244T-BE/MNY
Microchip Technology
-
TC670ECHTR
Microchip Technology
-
SE98ATP,547
NXP Semiconductors
-
AMC6821SDBQR
Texas Instruments
-
MAX6604AATA+T
Analog Devices Inc./Maxim Integrated
-
ADT7475ARQZ-REEL
onsemi
-
MAX6643LBBAEE+
Analog Devices Inc./Maxim Integrated
-
MAX6684ESA+T
Analog Devices Inc./Maxim Integrated
-
MAX6639AEE+
Analog Devices Inc./Maxim Integrated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
