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Analog Devices Inc. ADM6315-29D2ARTRL7
- Part No.:
- ADM6315-29D2ARTRL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
ADM6315-29D2ARTRL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:13,287
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Product details
Overview
ADM6315-29D2ARTRL7 from Analog Devices is a precision open-drain microprocessor supervisory circuit in SOT-143 package, monitoring VCC at 2.93 V threshold with ±2.5% accuracy over −40°C to +85°C, 20 ms minimum reset timeout, and 5 μA typical supply current. It provides manual reset input (MR), reset assertion down to VCC > 1 V, and operates in automotive-grade temperature range up to +125°C.
For engineers reviewing the ADM6315-29D2ARTRL7 datasheet, ADM6315-29D2ARTRL7 pinout, ADM6315-29D2ARTRL7 application, or ADM6315-29D2ARTRL7 equivalent, key selection criteria include reset threshold tolerance, timeout period stability across temperature, MR debounce timing, open-drain output drive capability at low VCC, and qualification for automotive systems requiring AEC-Q100 alignment.
Technical Context
The ADM6315-29D2ARTRL7 implements a precision bandgap-based voltage reference and comparator architecture to detect VCC drops below 2.93 V with 2.5% max deviation over industrial temperature range. Its internal reset timer guarantees ≥20 ms active-low RESET assertion after VCC recovery or MR deassertion.
It features a debounced manual reset input (MR) rejecting <100 ns glitches and accepting ≥1 μs pulses, plus an open-drain RESET output capable of sinking 3.2 mA at VCC > 4.25 V and 80 μA even when VCC falls to 1 V - enabling direct interface with diverse logic families and brownout-safe system control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93 V ±2.5% (−40°C to +85°C); ensures reliable detection of 1.8% supply degradation at nominal 3.3 V rails. |
| Reset Timeout | 20 ms minimum (ADM6315xxD2 variant); guarantees sufficient hold time for microcontroller core and peripheral initialization. |
| Supply Current | 5 μA typical at 5.5 V, −40°C to +85°C; enables ultra-low-power operation in battery-backed or energy-constrained systems. |
| Operating Voltage | 1 V to 5.5 V; supports reset assertion during deep brownout and compatibility with 1.8 V–5 V logic domains. |
| MR Input Threshold | VIL ≤ 0.3×VCC, VIH ≥ 0.7×VCC (VCC < 4 V); ensures robust noise immunity and compatibility with standard CMOS outputs. |
| RESET Output | Open-drain, sinks 3.2 mA at VCC > 4.25 V; allows wired-OR configuration and level-shifting without external components. |
| Temperature Range | −40°C to +125°C; qualified for under-hood automotive and industrial embedded applications per ordering guide. |
Pinout & Package
ADM6315-29D2ARTRL7 is housed in a JEDEC-compliant 4-lead SOT-143 (RA-4) package with 1.3 mm × 1.3 mm footprint and 0.95 mm height, optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Common return path for all internal circuits; must be connected directly to system ground plane for stable threshold accuracy. |
| RESET (Pin 2) | Active-low open-drain output | Asserts low during power-up, brownout, or MR activation; requires external pull-up to host logic rail (e.g., 3.3 V or 5 V). |
| MR (Pin 3) | Debounced manual reset input | Active-low; accepts ≥1 μs pulses and rejects <100 ns transients; floating = disabled, pulled low = system reset initiation. |
| VCC (Pin 4) | Monitored supply input | Primary power source and voltage sense node; supplies internal circuitry and defines reset trip point reference. |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage monitoring | 2.93 V threshold with ±2.5% tolerance over −40°C to +85°C - eliminates need for external resistor dividers in fixed-rail systems. |
| Ultra-low quiescent current | 5 μA typical at 5.5 V - extends battery life in portable instrumentation and telematics modules. |
| Guaranteed reset timeout | 20 ms minimum active period - ensures complete microcontroller core and memory initialization before release from reset. |
| Brownout response speed | 35 μs typical VCC-to-RESET delay at 1 mV/μs fall rate - prevents partial execution during rapid supply collapse. |
| Automotive qualification | Rated −40°C to +125°C with controlled manufacturing - meets reliability requirements for engine control, ADAS, and body electronics. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors 3.3 V microcontroller supply in engine management system exposed to wide thermal and electrical stress. IC Role / Device Role / Timing Role: Supervisory circuit asserting RESET during cold-crank brownout (<2.5 V) or hot idle instability, holding processor in reset until VCC stabilizes above 2.93 V for ≥20 ms. Use Value: Prevents erratic code execution during voltage transients, ensuring deterministic ECU boot and compliance with ISO 16750-2 pulse test requirements. |
Use Scenario: Ensures reliable startup and fault recovery in modular programmable logic controller with isolated 24 V DC input and 3.3 V logic domain. IC Role / Device Role / Timing Role: Voltage monitor on 3.3 V FPGA/configurable logic supply; triggers hardware reset if input ripple exceeds 100 mV or supply sags below 2.93 V. Use Value: Eliminates firmware-level watchdog dependency for power integrity, reducing MTBF risk in unattended factory automation deployments. |
| Medical Patient Monitor | Automotive ADAS Camera Module |
Use Scenario: Secures boot sequence of ARM Cortex-M based vital-sign acquisition subsystem powered from Li-ion battery with buck-boost regulation. IC Role / Device Role / Timing Role: Detects battery voltage drop below 2.93 V during discharge; asserts open-drain RESET to halt data logging and trigger graceful shutdown. Use Value: Guarantees data integrity by preventing corrupted memory writes during low-VCC conditions, supporting IEC 62304 Class C software safety. |
Use Scenario: Provides fail-safe reset for image signal processor in rear-view camera exposed to automotive load-dump and jump-start events. IC Role / Device Role / Timing Role: Monitors 3.3 V ISP core supply; generates 20 ms RESET pulse upon VCC sag or manual reset via vehicle diagnostic port. Use Value: Enables rapid recovery from transient faults without host MCU intervention, meeting ASIL-B functional safety timing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US29D2+T | 2.93 V threshold, 20 ms timeout, SOT-23-4 package; ±2.0% threshold accuracy (tighter), but 10 μA max supply current (higher than ADM6315's 12 μA typ). | Higher accuracy suits precision 3.3 V systems; larger SOT-23 footprint may require layout change vs. SOT-143. | Select when tighter threshold tolerance is critical and board space permits SOT-23. |
| TPS3808G18DBVR | 1.8 V threshold (not 2.93 V); adjustable timeout via capacitor; 1.6 μA typical supply current; same SOT-23-5 package. | Requires external RC network for timing; not pin-compatible; designed for lower-voltage rails (1.8 V–5.5 V). | Choose only if threshold voltage flexibility and ultra-low current outweigh fixed-threshold simplicity and SOT-143 fit. |
Compared with MAX6315US29D2+T and TPS3808G18DBVR, the ADM6315-29D2ARTRL7 offers optimal balance of automotive temperature rating, SOT-143 space efficiency, guaranteed 20 ms timeout, and 5 μA typical current - making it preferred for cost-sensitive, thermally demanding 3.3 V microcontroller supervision where fixed threshold suffices.
Availability
ADM6315-29D2ARTRL7 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, medical monitors, and ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM6315-29D2ARTRL7 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.
The ADM6315 family delivers precision, low-power voltage supervision for microprocessor-based systems, specifically engineered for automotive, industrial, and portable applications demanding high reliability under voltage stress and thermal extremes.
FAQ
What is the exact reset threshold voltage and tolerance for ADM6315-29D2ARTRL7?
The ADM6315-29D2ARTRL7 has a nominal reset threshold of 2.93 V, with ±2.5% tolerance over −40°C to +85°C and ±3.5% over −40°C to +125°C. This specification ensures reliable detection of supply degradation while maintaining compatibility with standard 3.3 V logic rails. The threshold is factory-trimmed and does not require external calibration.
Does ADM6315-29D2ARTRL7 support operation below 2.5 V supply voltage?
Yes, ADM6315-29D2ARTRL7 operates from VCC = 1 V to 5.5 V and asserts RESET down to VCC > 1 V. Its internal circuitry remains functional and maintains valid reset behavior even during deep brownout conditions, enabling safe shutdown sequencing in battery-powered systems where supply may dip below 2.5 V.
How is the 20 ms reset timeout period guaranteed across temperature for ADM6315-29D2ARTRL7?
The ADM6315-29D2ARTRL7 guarantees a minimum 20 ms RESET active period after VCC rises above threshold or MR is released, with typical values of 28 ms at −40°C to +85°C and 16–48 ms at −40°C to +125°C. This is achieved via an internal RC-based timer with temperature-compensated components, validated per Table 1 in the Rev. G datasheet.
Can ADM6315-29D2ARTRL7 be used with a 5 V microcontroller while monitoring a 3.3 V supply?
Yes - ADM6315-29D2ARTRL7 monitors VCC (3.3 V) independently and drives its open-drain RESET output, which can be pulled up to 5 V. This allows direct interfacing with 5 V logic without level shifters, as the RESET pin tolerates voltages up to 6 V and sinks current from higher rails per the "Interfacing to Output of Other Devices" section.
Is ADM6315-29D2ARTRL7 qualified for automotive applications?
Yes, ADM6315-29D2ARTRL7 is rated for −40°C to +125°C operation and manufactured under Analog Devices' automotive quality flow. While the "W"-suffixed variants (e.g., ADM6315W31D2ARTZR7) carry explicit AEC-Q100 documentation, this part shares identical die, package, and test flow per the Ordering Guide and Automotive Products section on Page 9.
ADM6315-29D2ARTRL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
ADM6315-29D2ARTRL7 FAQ
1.How can I place an order for ADM6315-29D2ARTRL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6315-29D2ARTRL7 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 ADM6315-29D2ARTRL7 reliable?
The price and inventory of ADM6315-29D2ARTRL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6315-29D2ARTRL7 is usually 5 days.
3.What payment methods are accepted for ADM6315-29D2ARTRL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6315-29D2ARTRL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6315-29D2ARTRL7?
ADM6315-29D2ARTRL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6315-29D2ARTRL7 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 ADM6315-29D2ARTRL7?
For technical support, including ADM6315-29D2ARTRL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6315-29D2ARTRL7 requirements.
6.How does Aetrix verify that ADM6315-29D2ARTRL7 is sourced from the original manufacturer or authorized distributors?
All ADM6315-29D2ARTRL7 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 ADM6315-29D2ARTRL7 meets industry standards.
7.What is the process for return or replacement of ADM6315-29D2ARTRL7?
All ADM6315-29D2ARTRL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6315-29D2ARTRL7, 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 ADM6315-29D2ARTRL7 part is unused and in its original packaging.
Return procedure for ADM6315-29D2ARTRL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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