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Analog Devices Inc. ADM6348-41ARTZ-R7
- Part No.:
- ADM6348-41ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6348-41ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,348
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Product details
Overview
ADM6348-41ARTZ-R7 from Analog Devices is an ultralow-power, open-drain microprocessor reset circuit in a 3-lead SOT-23 package, monitoring 4.1 V supply rails with ±2.5% threshold accuracy over −40°C to +85°C, 100 ms minimum reset timeout, and 1 µA max supply current - used for reliable power-up sequencing in portable microprocessor systems.
For engineers reviewing the ADM6348-41ARTZ-R7 datasheet, ADM6348-41ARTZ-R7 pinout, ADM6348-41ARTZ-R7 application, or ADM6348-41ARTZ-R7 equivalent, key selection criteria include open-drain output compatibility with bidirectional MCU reset pins, guaranteed RESET assertion down to 1 V VCC, glitch immunity against negative transients, and precise 4.1 V threshold for 4.0–4.2 V nominal rails.
Technical Context
The ADM6348-41ARTZ-R7 implements a precision bandgap-based voltage comparator with built-in hysteresis (9.5 mV) and a 100–280 ms reset timeout timer. Its open-drain RESET output requires an external pull-up resistor and remains functional down to VCC = 1 V, enabling brownout detection in low-voltage operation.
It delivers ultralow ICC of ≤1.0 µA at 3 V and ≤1.75 µA at 5.5 V, with temperature coefficient of 40 ppm/°C and transient immunity validated up to 200 µs for 100 mV overdrive - ensuring robustness against fast VCC dips without spurious resets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.1 V ±2.5% (3.997–4.202 V over −40°C to +85°C); ensures accurate detection of 4.0 V rail collapse before system malfunction. |
| Supply Current | ≤1.0 µA at 3 V, ≤1.75 µA at 5.5 V; enables multi-year battery life in always-on portable equipment. |
| Reset Timeout | 100–280 ms (typ. 185 ms); holds microprocessor in reset long enough for power supply stabilization after cold start. |
| VCC Operating Range | 1.0–5.5 V; supports valid RESET assertion even during deep brownout conditions down to 1 V. |
| Output Type | Active-low open-drain; allows wired-OR reset bus configuration and interoperability with bidirectional MCU reset pins. |
| Hysteresis | 9.5 mV; prevents oscillatory reset toggling near threshold during slow VCC recovery. |
| Glitch Immunity | Validated against negative VCC transients ≤200 µs at 100 mV overdrive; suppresses false resets from switching noise. |
Pinout & Package
ADM6348-41ARTZ-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 soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | 0 V return path for internal comparator and reset generator; must be connected directly to system ground plane. |
| RESET (Pin 2) | Active-low open-drain output | Sinks up to 1.6 mA when asserted; requires external pull-up to VCC or another logic rail for proper logic high level. |
| VCC (Pin 3) | Monitored supply input | Input voltage source being supervised; powers internal circuitry and determines reset assertion timing and validity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | ≤1.0 µA typical at 3 V - extends battery runtime in IoT sensors and wearables without compromising supervision integrity. |
| Precision 4.1 V threshold | ±2.5% tolerance over full temperature range - eliminates need for external trimming in 4.0 V rail monitoring applications. |
| Open-drain RESET | Enables shared reset bus with multiple supervisors or MCUs; supports bidirectional reset arbitration in complex systems. |
| 1 V minimum VCC operation | Guaranteed RESET assertion down to 1 V - provides fail-safe brownout protection even during severe undervoltage events. |
| 100 ms min. timeout | Ensures stable power delivery before release; meets JEDEC JESD84-B51 requirements for embedded microprocessor startup. |
Applications
| Telecom Power Management | Portable Medical Devices |
|---|---|
|
Use Scenario: Monitoring 4.0 V backup battery rail in LTE base station remote radio units during AC loss. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low RESET to halt FPGA configuration and preserve SRAM state until stable power resumes. Use Value: Prevents corrupted firmware load and memory corruption by holding system in reset for ≥185 ms while DC-DC converters stabilize. |
Use Scenario: Ensuring safe boot of ARM Cortex-M4 in handheld ECG monitor powered by single-cell Li-ion (4.2 V → 3.0 V discharge). IC Role / Device Role / Timing Role: Voltage supervisor triggering hardware reset when battery drops below 4.1 V, indicating end-of-charge or fault condition. Use Value: Eliminates software-only voltage checks, reducing firmware complexity and guaranteeing deterministic reset before analog front-end initialization. |
| Notebook Platform Controller Hub | Industrial PLC I/O Module |
|
Use Scenario: Supervising 4.05 V auxiliary rail feeding PCIe switch and USB 3.0 PHY in ultrabook motherboard. IC Role / Device Role / Timing Role: Open-drain RESET output tied to shared reset bus with PCH and EC; asserts on rail collapse to synchronize subsystem recovery. Use Value: Enables coordinated reset across multiple domains using single pull-up resistor, minimizing BOM count and routing congestion. |
Use Scenario: Monitoring 4.1 V isolated DC-DC output powering fieldbus communication ASIC in hazardous-area-rated PLC module. IC Role / Device Role / Timing Role: Fail-safe reset generator with 40 ppm/°C tempco, ensuring threshold stability across −40°C to +85°C industrial ambient. Use Value: Maintains ±2.5% threshold accuracy without calibration, meeting IEC 61000-4-2/4-4 immunity requirements for critical infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6348T41+T | 4.1 V threshold, open-drain output, but higher ICC (2.5 µA typ.) and wider threshold tolerance (±3.5%). | Lacks guaranteed 1 V VCC operation; RESET invalid below 1.2 V. | Select when cost sensitivity outweighs ultra-low ICC or sub-1.2 V brownout coverage. |
| TPS3808G41DBVR | 4.1 V threshold, open-drain, 1.8 µA ICC, 200 ms fixed timeout, but requires minimum 1.8 V VCC to assert RESET. | No operation below 1.8 V limits use in deep brownout scenarios where ADM6348-41ARTZ-R7 remains functional. | Choose when tighter timeout consistency (200 ms ±10%) is prioritized over extended low-VCC supervision. |
Compared with MAX6348T41+T and TPS3808G41DBVR, the ADM6348-41ARTZ-R7 uniquely combines 1 µA max ICC, 1 V minimum VCC operation, and ±2.5% threshold accuracy - making it optimal for battery-critical, wide-input-range, and safety-sensitive reset supervision.
Availability
ADM6348-41ARTZ-R7 is available at Aetrix Electronics and suitable for telecommunications infrastructure, portable medical devices, notebook platforms, and industrial PLC modules requiring stable component supply with RoHS-compliant packaging and full traceability.
Supply support for ADM6348-41ARTZ-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, automotive, communications, and healthcare markets.
The ADM63xx family was designed specifically for ultralow-power, precision voltage supervision in space- and energy-constrained microprocessor systems - emphasizing reliability, minimal footprint, and guaranteed operation across extended temperature ranges.
FAQ
What is the exact reset threshold voltage of ADM6348-41ARTZ-R7 at 25°C?
The ADM6348-41ARTZ-R7 has a typical reset threshold voltage of 4.1 V at 25°C, with a guaranteed range of 4.038 V to 4.161 V per Table 2 of the Rev. B datasheet. This 4.1 V specification targets nominal 4.0 V supply rails and ensures reliable detection of under-voltage faults before system instability occurs.
Does ADM6348-41ARTZ-R7 support operation below 1.8 V VCC?
Yes, ADM6348-41ARTZ-R7 guarantees valid RESET assertion down to VCC = 1.0 V, as stated in the General Description and Specifications sections. This capability enables fail-safe brownout detection in deep undervoltage conditions where many competing supervisors cease operation above 1.2 V.
Why does ADM6348-41ARTZ-R7 require an external pull-up resistor?
ADM6348-41ARTZ-R7 features an active-low open-drain RESET output (Pin 2), which can only sink current. An external pull-up resistor is required to establish a defined logic-high level when RESET is inactive. This architecture enables wired-OR reset busing and compatibility with bidirectional MCU reset pins, as shown in Figure 8 of the datasheet.
What is the maximum transient duration ADM6348-41ARTZ-R7 can ignore without asserting reset?
Per Figure 5 in the datasheet, ADM6348-41ARTZ-R7 tolerates negative-going VCC transients up to 200 µs in duration when the overdrive (VTH – VCC) is 100 mV. This glitch immunity prevents false resets caused by switching noise or brief supply dips, enhancing system reliability in electrically noisy environments.
Is ADM6348-41ARTZ-R7 pin-compatible with other ADM63xx variants?
Yes, ADM6348-41ARTZ-R7 shares identical 3-lead SOT-23 (RT-3) pinout and footprint with all ADM6326/ADM6328/ADM6346/ADM6348 family members, including GND (Pin 1), RESET (Pin 2), and VCC (Pin 3). However, output structure differs: ADM6348-41ARTZ-R7 uses open-drain, whereas ADM6346-41 variants use push-pull - requiring schematic review before substitution.
ADM6348-41ARTZ-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:
- 4.1V
- 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
ADM6348-41ARTZ-R7 FAQ
1.How can I place an order for ADM6348-41ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6348-41ARTZ-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 ADM6348-41ARTZ-R7 reliable?
The price and inventory of ADM6348-41ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6348-41ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6348-41ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6348-41ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6348-41ARTZ-R7?
ADM6348-41ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6348-41ARTZ-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 ADM6348-41ARTZ-R7?
For technical support, including ADM6348-41ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6348-41ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6348-41ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6348-41ARTZ-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 ADM6348-41ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6348-41ARTZ-R7?
All ADM6348-41ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6348-41ARTZ-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 ADM6348-41ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6348-41ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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