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Analog Devices Inc. ADM6348-34ARTZ-R7
- Part No.:
- ADM6348-34ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6348-34ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,107
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Product details
Overview
ADM6348-34ARTZ-R7 from Analog Devices is an ultralow-power, open-drain microprocessor reset circuit in a 3-lead SOT-23 package, monitoring 3.4 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 ADM6348-34ARTZ-R7 datasheet, ADM6348-34ARTZ-R7 pinout, ADM6348-34ARTZ-R7 application, or ADM6348-34ARTZ-R7 equivalent, key selection criteria include open-drain output compatibility with bidirectional MCU reset pins, operation down to 1 V VCC, glitch immunity against negative VCC transients, and precise 3.4 V threshold for 3.3 V rail margining.
Technical Context
The ADM6348-34ARTZ-R7 implements a precision bandgap-based voltage comparator with internal hysteresis (9.5 mV) and a 100–280 ms programmable 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 systems.
It features built-in glitch immunity against fast negative-going VCC transients up to 200 mV overdrive, with transient rejection time inversely proportional to overdrive magnitude. The device operates across the full industrial temperature range without external components beyond the pull-up resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.349 V to 3.451 V at 25°C (±2.5% tolerance); ensures reliable detection of 3.3 V rail droop before system instability. |
| Supply Current | 1.0 µA max at 3.2 V (VTH > 2.93 V); enables multi-year battery life in always-on portable equipment. |
| Reset Timeout | 100–280 ms typical active period; holds MCU in reset long enough for 3.3 V LDOs and clocks to stabilize post-power-up. |
| VCC Operating Range | 1.0 V to 5.5 V; supports brownout detection even during deep undervoltage events where core logic may still be active. |
| Output Type | Active-low open-drain RESET; allows wired-OR with other reset sources and interfaces directly to bidirectional MCU reset pins. |
| Temperature Range | −40°C to +85°C; qualified for industrial and extended-temperature embedded applications without derating. |
| Hysteresis | 9.5 mV (typical); prevents oscillatory reset assertion near threshold due to noise or slow-rising VCC. |
Pinout & Package
ADM6348-34ARTZ-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 to system ground plane for stable threshold reference. |
| RESET (Pin 2) | Active-low open-drain output | Drives low when VCC < VTH; requires external pull-up to VCC or another logic rail; sinks ≥1.6 mA at VCC > 2.1 V. |
| VCC (Pin 3) | Monitored supply input | Input voltage source being supervised; powers internal circuitry and defines reset assertion point; valid down to 1.0 V. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 1.0 µA max supply current enables integration into energy-harvesting and coin-cell-powered systems without measurable battery drain. |
| Open-drain RESET | Supports shared reset bus architectures and bidirectional MCU reset pins without level-shifting or additional logic. |
| Glitch-immune comparator | Rejects negative VCC transients ≤200 mV overdrive, preventing spurious resets during switching noise or load dump events. |
| 1 V minimum VCC operation | Asserts RESET down to 1.0 V supply, allowing early brownout detection before digital logic fails unpredictably. |
| 3.4 V precision threshold | Factory-trimmed 3.4 V nominal threshold (3.349–3.451 V) targets 3.3 V rail monitoring with 3% margin for ripple and tolerance stack-up. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered wearable ECG sensor operating from a 3.3 V LDO with intermittent BLE transmission. IC Role / Device Role / Timing Role: Supervises 3.3 V rail and asserts open-drain RESET to hold MCU in reset during brownout caused by high-current RF bursts. Use Value: Prevents corrupted memory writes and firmware crashes by guaranteeing 100+ ms reset hold time after VCC recovers above 3.4 V. |
Use Scenario: DIN-rail mounted I/O module powered from 24 V DC-DC converter with 3.3 V logic rail. IC Role / Device Role / Timing Role: Monitors 3.3 V FPGA configuration rail and drives shared reset bus via pull-up to 3.3 V. Use Value: Enables synchronized restart of FPGA, ADC, and communication ICs after power interruption, eliminating partial initialization states. |
| Edge AI Sensor Nodes | Automotive Infotainment Subsystems |
|
Use Scenario: Ultra-low-power vision sensor node using ARM Cortex-M0+ and 3.3 V PMIC output. IC Role / Device Role / Timing Role: Provides power-on reset and brownout protection with <1 µA quiescent draw to maximize sleep-mode battery life. Use Value: Extends operational lifetime by avoiding unnecessary wake-ups triggered by transient supply dips below 3.3 V. |
Use Scenario: Display controller board in infotainment head unit supplied from 3.3 V domain with CAN interface. IC Role / Device Role / Timing Role: Generates clean reset pulse on 3.3 V rail failure while coexisting with CAN transceiver reset signaling. Use Value: Ensures deterministic boot sequence after ignition cycling, preventing display freeze or UI lockup during cold cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326LT33D3+T | 3.3 V fixed threshold, push-pull output, 1.2 µA ICC, same SOT-23-3 package. | Requires dedicated reset net; not compatible with wired-OR or bidirectional MCU pins. | Select when system uses dedicated reset line and no shared reset bus is needed. |
| TPS3808G33DBVR | 3.3 V threshold, open-drain output, 16 µA ICC, 200 ms fixed timeout, SOT-23-6 package. | Higher supply current limits battery life; larger footprint and extra pins for manual reset and watchdog. | Select when watchdog timer or manual reset functionality is required alongside voltage supervision. |
Compared with MAX6326LT33D3+T and TPS3808G33DBVR, the ADM6348-34ARTZ-R7 offers the lowest ICC (1 µA), optimal 3.4 V threshold for 3.3 V rail margining, and minimal 3-pin SOT-23 footprint-making it ideal for space- and power-constrained designs where open-drain flexibility is essential.
Availability
ADM6348-34ARTZ-R7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, edge AI sensor nodes, and automotive infotainment subsystems requiring stable component supply with RoHS compliance and full traceability.
Supply support for ADM6348-34ARTZ-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 supervisors targeting battery-operated and space-constrained embedded systems requiring robust power-up and brownout protection.
FAQ
What is the exact reset threshold voltage range for ADM6348-34ARTZ-R7?
The ADM6348-34ARTZ-R7 has a guaranteed reset threshold range of 3.349 V to 3.451 V at 25°C (±2.5% tolerance), and 3.315 V to 3.485 V across the full −40°C to +85°C operating temperature range. This precision enables accurate supervision of 3.3 V rails with sufficient margin for ripple and tolerance accumulation.
Does ADM6348-34ARTZ-R7 require an external pull-up resistor?
Yes, ADM6348-34ARTZ-R7 features an active-low open-drain RESET output (Pin 2) and requires an external pull-up resistor to a logic rail (typically 3.3 V). The datasheet specifies that the output sinks ≥1.6 mA when asserted, so the pull-up value must ensure adequate voltage rise time and noise margin for the target MCU reset input.
Can ADM6348-34ARTZ-R7 operate below 3.3 V supply?
Yes, ADM6348-34ARTZ-R7 operates from 1.0 V to 5.5 V VCC. Its internal circuitry remains functional and RESET remains asserted down to 1.0 V, enabling reliable brownout detection well below nominal 3.3 V rail levels-critical for detecting gradual battery discharge or LDO dropout.
What is the reset timeout duration of ADM6348-34ARTZ-R7?
The ADM6348-34ARTZ-R7 guarantees a minimum reset timeout of 100 ms, with typical duration of 185 ms and maximum of 280 ms across temperature. This ensures sufficient hold time for 3.3 V power supplies and clock generators to stabilize before releasing the microprocessor from reset.
Is ADM6348-34ARTZ-R7 pin-compatible with other ADM63xx devices?
Yes, ADM6348-34ARTZ-R7 shares identical 3-lead SOT-23 (RT-3) pinout and footprint with all ADM6326/ADM6328/ADM6346/ADM6348 variants-including GND (Pin 1), RESET (Pin 2), and VCC (Pin 3)-enabling drop-in replacement within the same output type (open-drain) and threshold family (ADM6348).
ADM6348-34ARTZ-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:
- 3.4V
- 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
ADM6348-34ARTZ-R7 FAQ
1.How can I place an order for ADM6348-34ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6348-34ARTZ-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 ADM6348-34ARTZ-R7 reliable?
The price and inventory of ADM6348-34ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6348-34ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6348-34ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6348-34ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6348-34ARTZ-R7?
ADM6348-34ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6348-34ARTZ-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 ADM6348-34ARTZ-R7?
For technical support, including ADM6348-34ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6348-34ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6348-34ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6348-34ARTZ-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 ADM6348-34ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6348-34ARTZ-R7?
All ADM6348-34ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6348-34ARTZ-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 ADM6348-34ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6348-34ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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