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Analog Devices Inc. ADM6326-31ARTZ-R7
- Part No.:
- ADM6326-31ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6326-31ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
ADM6326-31ARTZ-R7 from Analog Devices is an ultralow-power microprocessor reset circuit in a 3-lead SOT-23 package, providing active-low push-pull RESET output with 3.08 V threshold voltage, 100 ms minimum reset timeout, and 1 µA maximum supply current. It monitors VCC during power-up, power-down, and brownout conditions in portable microprocessor systems.
For engineers reviewing the ADM6326-31ARTZ-R7 datasheet, ADM6326-31ARTZ-R7 pinout, ADM6326-31ARTZ-R7 application, or ADM6326-31ARTZ-R7 equivalent, key selection criteria include reset threshold accuracy (±2.5%), operation down to 1 V VCC, glitch immunity against negative transients, and compatibility with low-power embedded systems requiring stable reset assertion timing.
Technical Context
The ADM6326-31ARTZ-R7 integrates a precision voltage reference and comparator with internal 100 ms–280 ms reset timeout timer. Its push-pull output drives RESET low without external components and remains functional down to VCC = 1 V, enabling reliable reset assertion even during deep brownout.
It features ±2.5% threshold tolerance over −40°C to +85°C, 40 ppm/°C temperature coefficient, and 6.3 mV hysteresis-ensuring immunity to noise-induced false resets while supporting accurate monitoring of 3.08 V rails in battery-powered equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 3.08 V (typical), ±2.5% tolerance - precisely triggers reset when monitored 3.08 V rail drops below safe operating level |
| Supply Current | 1.0 µA maximum at 3 V - enables multi-year battery life in always-on portable systems |
| Reset Timeout Period | 100–280 ms - holds microprocessor in reset long enough for power supply stabilization after turn-on |
| Operating Voltage Range | 1.0 V to 5.5 V - supports reset assertion even during severe brownout down to 1 V VCC |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor and simplifies interface to MCU reset pins |
| Temperature Range | −40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
| Hysteresis | 6.3 mV - prevents oscillatory reset behavior near threshold due to supply noise |
Pinout & Package
ADM6326-31ARTZ-R7 is housed in a JEDEC-compliant 3-lead SOT-23-3 (RT-3) package with 270°C/W junction-to-ambient thermal resistance, optimized for space-constrained PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground Reference | 0 V reference for all internal circuitry and reset comparator; must be connected to system ground plane |
| RESET (Pin 2) | Active-Low Push-Pull Output | Drives low during reset condition; actively pulls high when deasserted - no external pull-up required |
| VCC (Pin 3) | Monitored Supply Input | Input voltage rail being supervised; device operates and asserts reset based on this pin's voltage level |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 1 µA max ensures minimal loading on battery-backed or energy-harvested supplies |
| Glitch Immunity | Immune to negative-going VCC transients up to 100 µs duration at 100 mV overdrive - avoids spurious resets |
| Valid Reset Below 1 V | RESET remains asserted and electrically valid even as VCC decays to 1 V - critical for graceful shutdown |
| Precision Threshold | 3.08 V ±2.5% over full temperature range - matches nominal 3.3 V rail derating for robust margin |
| No External Components | Push-pull output eliminates pull-up resistor and associated BOM cost/layout area |
Applications
| Telecom Power Management | Portable Microcontroller Systems |
|---|---|
Use Scenario: Monitoring 3.3 V backup power rails in VoIP phones and small cell baseband modules during AC loss or battery switchover. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low RESET to halt processor execution until backup rail stabilizes. Use Value: Prevents corrupted memory writes or firmware lockup by guaranteeing ≥100 ms reset hold time during rail transition. |
Use Scenario: Ensuring clean boot sequence in handheld medical devices powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Voltage supervisor detecting brownout below 3.08 V and holding MCU in reset until battery recovers or enters safe shutdown. Use Value: Enables deterministic low-power state recovery with 1 µA quiescent current extending operational runtime between charges. |
| Notebook Platform Reset | Industrial Sensor Node |
Use Scenario: Providing primary reset signal for Intel/AMD companion chips during 3.3 V platform rail sequencing. IC Role / Device Role / Timing Role: Dedicated reset generator with push-pull output directly driving chipset reset input without signal inversion. Use Value: Eliminates need for external logic or level-shifting; 3.08 V threshold aligns with 3.3 V rail tolerance band per ACPI specification. |
Use Scenario: Supervising 3.3 V LDO output powering LoRaWAN sensor nodes deployed in unattended outdoor enclosures. IC Role / Device Role / Timing Role: Brownout detector maintaining system integrity across −40°C to +85°C ambient extremes. Use Value: Guaranteed operation at 1 V VCC allows full reset functionality even during cold-start battery voltage sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326TRD31+T | 3.08 V threshold, open-drain output, 2.5 µA max ICC | Requires external pull-up; higher supply current reduces battery life in ultra-low-power designs | Select if open-drain flexibility needed for wired-OR reset buses |
| TPS3808G31DBVR | 3.08 V threshold, push-pull output, 16 µA max ICC, 200 ms fixed timeout | Higher quiescent current; fixed timeout lacks programmability of ADM6326 family's 100–280 ms range | Select if TI ecosystem preference or tighter production lot traceability required |
Compared with MAX6326TRD31+T and TPS3808G31DBVR, ADM6326-31ARTZ-R7 delivers lowest ICC (1 µA), guaranteed push-pull drive, and wider timeout range - making it optimal for battery-critical, space-constrained, and brownout-resilient embedded systems.
Availability
ADM6326-31ARTZ-R7 is available at Aetrix Electronics and suitable for telecom infrastructure, portable microcontroller systems, notebook platform design, and industrial sensor node applications requiring stable component supply and RoHS-compliant sourcing.
Supply support for ADM6326-31ARTZ-R7 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 healthcare markets since 1965.
The ADM6326 series belongs to Analog Devices' precision voltage supervisor product line, designed specifically for ultralow-power, high-accuracy reset generation in battery-operated and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of ADM6326-31ARTZ-R7?
The ADM6326-31ARTZ-R7 has a typical reset threshold voltage of 3.08 V at 25°C, with guaranteed tolerance of ±2.5% over the full −40°C to +85°C operating temperature range. This value is confirmed in Table 2 of the Rev. B datasheet and corresponds to the "-31" suffix designation in the ordering guide.
Does ADM6326-31ARTZ-R7 require an external pull-up resistor on the RESET pin?
No, ADM6326-31ARTZ-R7 does not require an external pull-up resistor because it features an active-low push-pull RESET output. Unlike open-drain variants (e.g., ADM6328), the ADM6326-31ARTZ-R7 actively drives both high and low states, simplifying interface to microprocessor reset inputs.
What is the minimum VCC voltage at which ADM6326-31ARTZ-R7 continues to assert RESET?
The ADM6326-31ARTZ-R7 guarantees valid RESET assertion down to VCC = 1.0 V. As stated in the General Description and Specifications table, the reset output remains operational and electrically defined even during deep brownout conditions, ensuring system safety before complete power loss.
How long does the RESET signal stay active after power-up for ADM6326-31ARTZ-R7?
After VCC rises above the 3.08 V threshold, ADM6326-31ARTZ-R7 holds RESET low for a minimum of 100 ms, with typical timeout of 185 ms and maximum of 280 ms. This internal timer ensures sufficient stabilization time for microprocessors and peripheral power supplies before release from reset.
Is ADM6326-31ARTZ-R7 RoHS compliant and what is its package type?
Yes, ADM6326-31ARTZ-R7 is RoHS compliant (denoted by the "Z" suffix) and packaged in a 3-lead SOT-23-3 (JEDEC TO-236-AB, Analog Devices package code RT-3). The marking code "LAZ" appears on the top surface, and the device is qualified for reflow soldering per J-STD-020.
ADM6326-31ARTZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ADM6326-31ARTZ-R7 FAQ
1.How can I place an order for ADM6326-31ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6326-31ARTZ-R7 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 ADM6326-31ARTZ-R7 reliable?
The price and inventory of ADM6326-31ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6326-31ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6326-31ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6326-31ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6326-31ARTZ-R7?
ADM6326-31ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6326-31ARTZ-R7 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 ADM6326-31ARTZ-R7?
For technical support, including ADM6326-31ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6326-31ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6326-31ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6326-31ARTZ-R7 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 ADM6326-31ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6326-31ARTZ-R7?
All ADM6326-31ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6326-31ARTZ-R7, 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 ADM6326-31ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6326-31ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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