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Analog Devices Inc. ADM6348-36ARTZ-R7
- Part No.:
- ADM6348-36ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6348-36ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,573
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Product details
Overview
ADM6348-36ARTZ-R7 from Analog Devices is an ultralow-power, open-drain microprocessor reset circuit in a 3-lead SOT-23 package, monitoring 3.6 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 ADM6348-36ARTZ-R7 datasheet, ADM6348-36ARTZ-R7 pinout, ADM6348-36ARTZ-R7 application, or ADM6348-36ARTZ-R7 equivalent, key selection criteria include open-drain output compatibility with bidirectional reset pins, 1 V minimum operating voltage for brownout detection, and glitch immunity against negative-going VCC transients up to 200 mV overdrive.
Technical Context
The ADM6348-36ARTZ-R7 implements a precision bandgap-based voltage reference and comparator to monitor VCC against a fixed 3.6 V threshold (3.546 V min / 3.654 V max at 25°C), with built-in hysteresis of 9.5 mV to prevent chatter during slow-rising or noisy supply conditions.
Its open-drain RESET output requires an external pull-up resistor and remains functional down to VCC = 1.0 V, asserting within 20 µs when VCC falls below threshold and holding active for 100–280 ms after VCC rises above threshold-ensuring deterministic microprocessor initialization across temperature and load variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.6 V nominal (3.546–3.654 V at 25°C); ensures reliable detection of 3.6 V rail undervoltage before system logic fails. |
| Supply Current | 1.0 µA max at 3.2 V; enables multi-year battery life in always-on portable equipment. |
| Reset Timeout | 100–280 ms typical; guarantees sufficient hold time for power supply stabilization and CPU core initialization. |
| Operating Voltage | 1.0–5.5 V; supports brownout detection even as supply collapses below 1.2 V. |
| Output Type | Active-low open-drain; allows wired-OR reset bus sharing with microprocessors and other supervisors. |
| Temperature Range | −40°C to +85°C; qualified for industrial and extended-temperature embedded applications. |
| Hysteresis | 9.5 mV; prevents false resets during marginal or slowly recovering supply conditions. |
Pinout & Package
ADM6348-36ARTZ-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 reference and comparator; must be low-impedance to ensure threshold accuracy. |
| RESET (Pin 2) | Active-low open-drain output | Drives low when VCC < 3.6 V; requires external pull-up to host VCC or logic rail for proper reset assertion timing. |
| VCC (Pin 3) | Monitored supply input | Direct connection to the 3.6 V rail being supervised; powers internal circuitry and defines reset trigger point. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 1.0 µA max enables integration into energy-harvesting and coin-cell-powered systems without measurable battery drain. |
| Glitch immunity | Immune to negative VCC transients ≤200 mV overdrive for durations up to 700 µs-prevents spurious resets during switching noise. |
| Open-drain RESET | Supports shared reset buses and bidirectional microprocessor reset pins without level-shifting or contention. |
| 1 V operation | Continues asserting RESET down to VCC = 1.0 V-critical for detecting deep brownout before logic corruption occurs. |
| Fixed 3.6 V threshold | Factory-trimmed for ±2.5% tolerance at 25°C and ±3.5% over full temperature range-eliminates external resistor networks. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered wearable ECG sensor operating on a 3.6 V Li-SOCl₂ cell with intermittent RF transmission. IC Role / Device Role / Timing Role: Monitors main supply rail and asserts open-drain RESET to halt MCU execution during voltage sag caused by RF burst current draw. Use Value: Prevents firmware crash or memory corruption by guaranteeing 100+ ms reset hold time while battery recovers from transient load. |
Use Scenario: DIN-rail mounted I/O module powered from a 3.6 V isolated DC-DC converter in harsh factory environments. IC Role / Device Role / Timing Role: Supervises field-side power rail and interfaces via shared reset bus to ARM Cortex-M7 controller with bidirectional reset pin. Use Value: Enables coordinated system-wide reset initiation from either supervisor or processor-reducing fault recovery latency by 40% vs. discrete solutions. |
| Smart Meter Communication Units | Automotive Telematics Gateways |
|
Use Scenario: NB-IoT modem subsystem in AMI smart meter, powered from 3.6 V backup supercapacitor during AC mains failure. IC Role / Device Role / Timing Role: Detects capacitor discharge below 3.6 V and holds MCU in reset until safe shutdown sequence completes. Use Value: Ensures EEPROM write integrity by maintaining RESET assertion down to 1.0 V-avoiding partial writes during final energy depletion. |
Use Scenario: LTE/V2X communication gateway in automotive infotainment domain, supplied from 3.6 V PMIC rail with high EMI exposure. IC Role / Device Role / Timing Role: Provides glitch-immune reset supervision for application processor, rejecting fast transients induced by CAN/LIN bus coupling. Use Value: Eliminates field-reported "phantom reboot" events caused by sub-100 µs supply dips-improving system uptime by >99.99%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326LT36D2T+ | 3.6 V threshold, push-pull output, 1.2 µA ICC, same SOT-23-3 package | Requires dedicated reset line; incompatible with shared-bus or bidirectional reset architectures | Select when board layout lacks space for pull-up resistor or system uses only unidirectional reset control. |
| TPS3808G33DBVR | 3.3 V threshold (not 3.6 V), open-drain, 1.1 µA ICC, SOT-23-6 package | Higher pin count; includes manual reset input and watchdog timer not present in ADM6348-36ARTZ-R7 | Select when design requires programmable reset delay or watchdog functionality-accept 0.3 V threshold mismatch for added features. |
Compared with MAX6326LT36D2T+ and TPS3808G33DBVR, ADM6348-36ARTZ-R7 delivers exact 3.6 V supervision with minimal footprint and zero external components beyond the pull-up resistor-making it optimal for cost-sensitive, space-constrained, and bus-shared reset implementations.
Availability
ADM6348-36ARTZ-R7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart meter communication units, and automotive telematics gateways requiring stable component supply with guaranteed long-term sourcing.
Supply support for ADM6348-36ARTZ-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, communications, automotive, and healthcare markets since 1965.
The ADM63xx family delivers ultralow-power, precision voltage supervision for microprocessor-based systems where reliability, small size, and battery longevity are critical-targeting portable, remote, and harsh-environment embedded applications.
FAQ
What is the exact reset threshold voltage of ADM6348-36ARTZ-R7 at room temperature?
The ADM6348-36ARTZ-R7 has a nominal reset threshold of 3.6 V, with a guaranteed range of 3.546 V to 3.654 V at 25°C per Table 2 of the Rev. B datasheet. This 2.5% tolerance ensures robust detection of 3.6 V rail collapse without premature or delayed reset assertion under nominal conditions.
Does ADM6348-36ARTZ-R7 require an external pull-up resistor, and why?
Yes, ADM6348-36ARTZ-R7 requires an external pull-up resistor on its open-drain RESET pin because its output stage lacks an internal pull-up. This design enables wired-OR connectivity with other reset sources (e.g., microprocessor, watchdog IC) on a shared reset bus-essential for coordinated system-level fault recovery.
Can ADM6348-36ARTZ-R7 operate reliably below 1.8 V supply voltage?
Yes, ADM6348-36ARTZ-R7 remains fully functional down to VCC = 1.0 V, continuing to assert RESET until the monitored rail recovers above 3.6 V. This capability is explicitly specified in the "OPERATING VOLTAGE RANGE" section and verified across −40°C to +85°C-critical for brownout detection in collapsing power scenarios.
What is the maximum duration of negative-going VCC transients that ADM6348-36ARTZ-R7 can ignore without asserting reset?
Per Figure 5 in the datasheet, ADM6348-36ARTZ-R7 tolerates negative-going VCC transients up to 700 µs in duration when the overdrive (VTH – VCC) is ≤200 mV. This built-in glitch immunity prevents false resets caused by switching noise, ESD coupling, or load-step-induced supply droop.
Is ADM6348-36ARTZ-R7 RoHS compliant and lead-free?
Yes, ADM6348-36ARTZ-R7 is RoHS compliant and lead-free, as indicated by the "Z" suffix in its ordering code per the Ordering Guide. It meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for standard Pb-free reflow soldering profiles up to 260°C peak temperature.
ADM6348-36ARTZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.6V
- 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
ADM6348-36ARTZ-R7 FAQ
1.How can I place an order for ADM6348-36ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6348-36ARTZ-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 ADM6348-36ARTZ-R7 reliable?
The price and inventory of ADM6348-36ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6348-36ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6348-36ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6348-36ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6348-36ARTZ-R7?
ADM6348-36ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6348-36ARTZ-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 ADM6348-36ARTZ-R7?
For technical support, including ADM6348-36ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6348-36ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6348-36ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6348-36ARTZ-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 ADM6348-36ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6348-36ARTZ-R7?
All ADM6348-36ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6348-36ARTZ-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 ADM6348-36ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6348-36ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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