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Analog Devices Inc. ADM6328-24ARTZ-R7
- Part No.:
- ADM6328-24ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6328-24ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,697
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Product details
Overview
ADM6328-24ARTZ-R7 from Analog Devices is an ultralow-power, open-drain microprocessor reset circuit in a 3-lead SOT-23 package, monitoring 2.5 V supply rails with ±2.5% threshold accuracy over −40°C to +85°C, 1 µA max supply current, and 100 ms minimum reset timeout-used for reliable power-up sequencing in portable microprocessor systems.
For engineers reviewing the ADM6328-24ARTZ-R7 datasheet, ADM6328-24ARTZ-R7 pinout, ADM6328-24ARTZ-R7 application, or ADM6328-24ARTZ-R7 equivalent, key selection criteria include open-drain reset output compatibility with bidirectional MCU reset pins, VCC operation down to 1 V, glitch immunity against negative-going transients, and precise 2.5 V threshold stability across temperature.
Technical Context
The ADM6328-24ARTZ-R7 implements a precision voltage comparator with internal reference and 100 ms (typical 185 ms) power-up reset timer, asserting active-low RESET within 20 µs when VCC falls below 2.5 V. Its open-drain output requires an external pull-up resistor and remains functional down to VCC = 1 V.
Designed for brownout detection in low-power embedded systems, it features 40 ppm/°C temperature coefficient, 6.3 mV hysteresis, and guaranteed glitch immunity against fast VCC transients-enabling robust reset assertion without false triggering during supply noise events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.5 V ±2.5% (−40°C to +85°C); ensures accurate brownout detection for 2.5 V logic rails |
| Supply Current | 1 µA maximum at 3 V; enables multi-year battery life in portable equipment |
| Reset Timeout | 100–280 ms; holds microprocessor in reset until power stabilizes post-power-up |
| VCC Operating Range | 1.0 V to 5.5 V; supports reset assertion even during deep brownout conditions |
| Output Type | Active-low open-drain; allows wired-OR configuration and bidirectional MCU reset pin interfacing |
| 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 during slow VCC recovery |
Pinout & Package
ADM6328-24ARTZ-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 return path for internal comparator and reset generator; must be low-impedance connection |
| RESET (Pin 2) | Active-low open-drain output | Drives low when VCC < 2.5 V; requires external pull-up to system VCC or compatible rail |
| VCC (Pin 3) | Monitored supply input | Input voltage source being supervised; powers internal circuitry and defines reset assertion point |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 1 µA max supply current enables integration into always-on, energy-harvesting, or coin-cell-powered systems |
| Glitch immunity | Immune to negative-going VCC transients up to 100 µs duration at 100 mV overdrive-prevents spurious resets |
| Low-VCC reset operation | Valid RESET assertion down to VCC = 1 V ensures fail-safe behavior during deep undervoltage events |
| Factory-trimmed threshold | 2.5 V threshold calibrated to ±2.5% over full temperature range-no external components required |
| Open-drain flexibility | Supports shared reset bus, level translation, and bidirectional MCU reset pin control via single pull-up |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered wearable ECG sensor operating on a 2.5 V LDO rail with multi-year runtime requirements. IC Role / Device Role / Timing Role: Monitors 2.5 V supply and asserts open-drain RESET to hold MCU in reset during cold start or battery sag. Use Value: 1 µA quiescent current extends battery life; 1 V minimum VCC operation ensures reset validity even as battery discharges to endpoint. |
Use Scenario: DIN-rail mounted PLC module with isolated 2.5 V digital I/O supply subject to field-induced transients. IC Role / Device Role / Timing Role: Provides glitch-immune brownout detection on the 2.5 V logic rail, driving shared reset bus across multiple ASICs. Use Value: 40 ppm/°C tempco and 6.3 mV hysteresis prevent false resets in electrically noisy factory environments. |
| Wireless Edge Node Controllers | Automotive Infotainment Subsystems |
Use Scenario: LoRaWAN edge node powered by energy harvesting, using 2.5 V rail to run ultra-low-power MCU and radio. IC Role / Device Role / Timing Role: Ensures deterministic startup only after harvested energy stabilizes above 2.5 V, with 185 ms typical timeout. Use Value: Open-drain output interfaces directly to MCU's bidirectional reset pin without level-shifting, reducing BOM count. |
Use Scenario: Infotainment head unit subsystem with 2.5 V FPGA configuration rail exposed to automotive load-dump transients. IC Role / Device Role / Timing Role: Detects rapid VCC collapse during ignition cycling and asserts RESET within 20 µs to prevent FPGA corruption. Use Value: Guaranteed operation from −40°C to +85°C and 100 V/µs VCC slew rate tolerance meet AEC-Q100 stress requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326LT25D3+T | Push-pull output; same 2.5 V threshold, but no external pull-up required | Not suitable for wired-OR or bidirectional reset buses; incompatible with open-drain–only MCU pins | Select when board-level reset signal routing is dedicated and no shared bus is needed |
| TPS3808G125DBVR | Adjustable threshold via external resistor divider; 2.5 V fixed option available; 1.6 µA ICC | Requires two external resistors; less precise than factory-trimmed ADM6328-24ARTZ-R7 at temperature extremes | Select when design requires future threshold flexibility or multi-rail monitoring with one footprint |
Compared with MAX6326LT25D3+T and TPS3808G125DBVR, the ADM6328-24ARTZ-R7 delivers superior threshold accuracy over temperature, lower supply current, and native open-drain compatibility-making it optimal for space- and power-constrained designs requiring shared reset architecture.
Availability
ADM6328-24ARTZ-R7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, wireless edge node controllers, and automotive infotainment subsystems requiring stable component supply with RoHS-compliant packaging and long-term lifecycle support.
Supply support for ADM6328-24ARTZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, serving industrial, communications, automotive, and consumer markets since 1965.
The ADM6328 series belongs to Analog Devices' single-supply voltage supervisor product line, engineered specifically for ultralow-power, precision reset functionality in battery-operated and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of ADM6328-24ARTZ-R7 and how tightly is it specified?
The ADM6328-24ARTZ-R7 has a nominal reset threshold of 2.5 V, specified as 2.437 V (min) to 2.562 V (max) over −40°C to +85°C, with ±2.5% tolerance at 25°C. This tight factory trimming eliminates need for external calibration and ensures consistent brownout detection across temperature and unit variance.
Does ADM6328-24ARTZ-R7 support operation below 2.5 V, and down to what supply voltage does RESET remain valid?
Yes, ADM6328-24ARTZ-R7 operates with VCC as low as 1.0 V, and its RESET output remains asserted and electrically valid down to that level. This guarantees fail-safe reset behavior during deep brownout or battery discharge scenarios where other supervisors may lose functionality.
What external components are required for ADM6328-24ARTZ-R7 to function correctly?
ADM6328-24ARTZ-R7 requires only one external component: a pull-up resistor on the RESET pin (Pin 2), typically 10 kΩ to system VCC or compatible logic rail. No capacitors, dividers, or trimming components are needed-the 2.5 V threshold is fully internal and factory-calibrated.
How does ADM6328-24ARTZ-R7 handle fast transients on the monitored VCC rail?
ADM6328-24ARTZ-R7 provides inherent glitch immunity against negative-going VCC transients up to 100 µs duration when overdriven by 100 mV below threshold. This prevents false resets caused by switching noise or load transients-verified per Figure 5 in the datasheet.
Is ADM6328-24ARTZ-R7 pin-compatible with other members of the ADM6326/ADM6328 family?
Yes, ADM6328-24ARTZ-R7 shares identical 3-lead SOT-23 (RT-3) pinout and footprint with all ADM6326/ADM6328/ADM6346/ADM6348 variants. Pin 1 = GND, Pin 2 = RESET (open-drain), Pin 3 = VCC-enabling drop-in replacement across threshold and output-type variants within the same package.
ADM6328-24ARTZ-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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.4V
- Output:
- Open Drain or Open Collector
- 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
ADM6328-24ARTZ-R7 FAQ
1.How can I place an order for ADM6328-24ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6328-24ARTZ-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 ADM6328-24ARTZ-R7 reliable?
The price and inventory of ADM6328-24ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6328-24ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6328-24ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6328-24ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6328-24ARTZ-R7?
ADM6328-24ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6328-24ARTZ-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 ADM6328-24ARTZ-R7?
For technical support, including ADM6328-24ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6328-24ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6328-24ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6328-24ARTZ-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 ADM6328-24ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6328-24ARTZ-R7?
All ADM6328-24ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6328-24ARTZ-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 ADM6328-24ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6328-24ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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