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Analog Devices Inc. ADM6326-27ARTZ-R7
- Part No.:
- ADM6326-27ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6326-27ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,742
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Product details
Overview
ADM6326-27ARTZ-R7 from Analog Devices is an ultralow-power microprocessor reset circuit in a 3-lead SOT-23 package, featuring a 2.7 V ±2.5% reset threshold, 100 ms minimum reset timeout, and push-pull active-low RESET output. It monitors supply rails during power-up, power-down, and brownout conditions in portable and embedded systems requiring stable low-voltage supervision.
For engineers reviewing the ADM6326-27ARTZ-R7 datasheet, ADM6326-27ARTZ-R7 pinout, ADM6326-27ARTZ-R7 application, or ADM6326-27ARTZ-R7 equivalent, this device delivers verified glitch immunity, sub-1 µA supply current at 3 V, and guaranteed RESET assertion down to 1 V VCC - critical for battery-powered microprocessor systems with tight power budgets.
Technical Context
The ADM6326-27ARTZ-R7 integrates a precision voltage reference, comparator with 40 ppm/°C temperature coefficient, and internal 100–280 ms reset timeout timer. Its push-pull output drives directly into microprocessor RESET inputs without external pull-up components.
It operates across −40°C to +85°C with VCC range of 1.0 V to 5.5 V, and guarantees RESET assertion within 20 µs when VCC falls below 2.7 V (−2.5% tolerance), maintaining validity down to 1 V supply - enabling robust supervision of deeply undervolted states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.7 V ±2.5% (2.633 V to 2.768 V over −40°C to +85°C) - ensures reliable detection of 2.7 V rail collapse before downstream logic fails. |
| Supply Current | 1.0 µA max at 3 V - enables multi-year operation on coin-cell batteries in always-on monitoring applications. |
| Reset Timeout | 100–280 ms (typ. 185 ms) - holds microprocessor in reset long enough for power supply stabilization and clock lock. |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor, simplifying BOM and reducing board space. |
| VCC Operating Range | 1.0 V to 5.5 V - supports supervision of ultra-low-voltage logic rails and legacy 5 V systems with single device. |
| Reset Propagation Delay | 20 µs max (VCC → VTH −100 mV) - ensures synchronous system-wide reset before any subsystem drops below operational voltage. |
| Hysteresis | 6.3 mV - prevents chatter during slow VCC recovery near threshold, improving noise margin in noisy environments. |
Pinout & Package
ADM6326-27ARTZ-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 compact PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | 0 V return path for internal reference and comparator; must be connected to system ground plane for accurate threshold sensing. |
| RESET (Pin 2) | Active-low push-pull output | Drives low during reset condition (VCC < 2.7 V); actively pulls high after timeout - interfaces directly with µP RESET input without external components. |
| VCC (Pin 3) | Monitored supply input | Connects to the 2.7 V rail being supervised; powers internal circuitry and enables reset assertion down to 1 V supply. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 1 µA max at 3 V - extends battery life in portable equipment and enables always-on supervision in energy-constrained IoT nodes. |
| Glitch immunity | Immune to negative-going VCC transients up to 100 µs duration at 100 mV overdrive - prevents false resets from switching noise or load dumps. |
| Wide VCC range | Operates from 1.0 V to 5.5 V - supports supervision of sub-1.8 V logic rails and compatibility with legacy 5 V designs. |
| Temperature stability | 40 ppm/°C threshold drift - maintains accuracy across industrial temperature range without calibration. |
| Low-VCC reset validity | RESET remains asserted and valid down to 1 V VCC - ensures fail-safe behavior even during deep brownout events. |
Applications
| Telecommunications Baseband Modules | Industrial Microcontroller Supervision |
|---|---|
Use Scenario: Monitoring 2.7 V FPGA configuration supply in LTE small cell radios subject to thermal cycling and transient noise. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to hold FPGA in configuration state until 2.7 V rail stabilizes post-power-up. Use Value: Prevents partial configuration and metastability by guaranteeing ≥100 ms reset hold time and rejecting fast transients via built-in glitch immunity. |
Use Scenario: Supervising 2.7 V I/O supply in programmable logic controllers exposed to 48 V field wiring surges. IC Role / Device Role / Timing Role: Reset generator triggering controlled shutdown when 2.7 V rail sags below 2.633 V due to load step or ESD event. Use Value: Enables deterministic recovery via 185 ms typical timeout and maintains reset assertion down to 1 V - ensuring safe state retention during undervoltage. |
| Portable Medical Sensors | Automotive Body Control Modules |
Use Scenario: Battery-supplied glucose monitor using coin cell and ultra-low-power MCU requiring guaranteed startup integrity. IC Role / Device Role / Timing Role: Power-on reset supervisor ensuring MCU remains held until 2.7 V LDO output reaches regulation and crystal oscillator stabilizes. Use Value: Sub-1 µA quiescent current extends shelf life; 2.7 V threshold matches common low-noise LDO outputs used in analog front-ends. |
Use Scenario: Monitoring 2.7 V supply for CAN transceiver and microcontroller in door module operating across −40°C to +85°C. IC Role / Device Role / Timing Role: Brownout detector asserting RESET when vehicle battery dips below 2.7 V during cranking or cold start. Use Value: 40 ppm/°C threshold stability ensures consistent trip point across full automotive temperature range without software compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326TRD27+T | 2.7 V threshold, open-drain output, 1.5 µA max ICC, same SOT-23-3 package | Requires external pull-up resistor; less suitable for direct µP RESET drive without added component | Select when system already uses open-drain reset bus architecture or shares pull-up with other supervisors. |
| TPS3808G12DBVR | 1.2 V fixed threshold (not adjustable), 2.5 µA ICC, push-pull output, SOT-23-5 package | Higher quiescent current and different pin count; requires PCB redesign due to 5-pin layout | Choose only if 1.2 V supervision is required and board layout allows 5-pin footprint change. |
Compared with MAX6326TRD27+T and TPS3808G12DBVR, ADM6326-27ARTZ-R7 offers lower ICC, native push-pull drive, and exact 2.7 V threshold in a 3-pin SOT-23 - minimizing BOM cost, board area, and design complexity for dedicated 2.7 V rail supervision.
Availability
ADM6326-27ARTZ-R7 is available at Aetrix Electronics and suitable for telecommunications baseband modules, industrial microcontroller supervision, and portable medical sensors requiring stable component supply with RoHS-compliant packaging and extended temperature support.
Supply support for ADM6326-27ARTZ-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' single-supply 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 ADM6326-27ARTZ-R7 over temperature?
The ADM6326-27ARTZ-R7 has a nominal reset threshold of 2.7 V at 25°C, with guaranteed range of 2.633 V to 2.768 V across −40°C to +85°C per Table 2 of the Rev. B datasheet. This 2.5% tolerance ensures reliable detection of 2.7 V rail failure while accommodating process and temperature variation without external calibration.
Does ADM6326-27ARTZ-R7 require an external pull-up resistor on its RESET pin?
No. ADM6326-27ARTZ-R7 features an active-low push-pull RESET output, meaning it actively drives both high and low states internally. Unlike open-drain variants (e.g., ADM6328-27ARTZ-R7), ADM6326-27ARTZ-R7 requires no external pull-up resistor and interfaces directly with standard microprocessor RESET inputs.
Can ADM6326-27ARTZ-R7 operate with supply voltages below 2.7 V?
Yes. ADM6326-27ARTZ-R7 operates from 1.0 V to 5.5 V and continues to assert RESET down to 1.0 V VCC. This allows it to maintain fail-safe reset behavior during deep brownout events where the monitored 2.7 V rail collapses well below its threshold - a key feature for safety-critical embedded systems.
What is the reset timeout duration of ADM6326-27ARTZ-R7, and is it adjustable?
The ADM6326-27ARTZ-R7 has a fixed internal reset timeout of 100 ms minimum, 280 ms maximum, with typical value of 185 ms. This timeout is factory-trimmed and non-adjustable - ensuring consistent power-up delay across units without external timing components or configuration pins.
How does ADM6326-27ARTZ-R7 handle fast voltage transients on the VCC line?
ADM6326-27ARTZ-R7 provides built-in glitch immunity against negative-going VCC transients, rejecting pulses up to 100 µs duration when overdriven by 100 mV below threshold (per Figure 5). This prevents spurious resets caused by switching noise, ESD coupling, or load-step transients in electrically noisy environments.
ADM6326-27ARTZ-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:
- 2.7V
- 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
ADM6326-27ARTZ-R7 FAQ
1.How can I place an order for ADM6326-27ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6326-27ARTZ-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 ADM6326-27ARTZ-R7 reliable?
The price and inventory of ADM6326-27ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6326-27ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6326-27ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6326-27ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6326-27ARTZ-R7?
ADM6326-27ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6326-27ARTZ-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 ADM6326-27ARTZ-R7?
For technical support, including ADM6326-27ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6326-27ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6326-27ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6326-27ARTZ-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 ADM6326-27ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6326-27ARTZ-R7?
All ADM6326-27ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6326-27ARTZ-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 ADM6326-27ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6326-27ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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