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Analog Devices Inc. ADM6315-29D4ART-RL
- Part No.:
- ADM6315-29D4ART-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
ADM6315-29D4ART-RL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,265
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Product details
Overview
ADM6315-29D4ART-RL from Analog Devices is a precision open-drain microprocessor supervisory circuit that monitors 2.93 V supply voltage with ±3.5% accuracy over −40°C to +125°C, asserts reset for minimum 1120 ms after power-up or brownout, and supports manual reset via debounced MR input. It operates down to VCC > 1 V and consumes only 5 μA typical supply current, enabling reliable power-on reset in space-constrained embedded controllers.
For engineers reviewing the ADM6315-29D4ART-RL datasheet, ADM6315-29D4ART-RL pinout, ADM6315-29D4ART-RL application, or ADM6315-29D4ART-RL equivalent, key selection criteria include its 2.93 V trip point, 1120 ms minimum timeout, SOT-143 package compatibility, open-drain RESET output, and −40°C to +125°C industrial temperature range.
Technical Context
The ADM6315-29D4ART-RL implements a precision bandgap-based voltage reference comparator with built-in hysteresis and temperature compensation (60 ppm/°C), ensuring stable 2.93 V threshold detection across full industrial temperature range. Its internal timing circuit generates a fixed 1120 ms minimum reset pulse upon VCC rise above threshold or MR assertion.
It features an open-drain RESET output capable of sinking up to 3.2 mA at VCC > 4.25 V, and a debounced manual reset input (MR) with 100 ns glitch rejection and guaranteed 1 μs minimum pulse acceptance. The device asserts reset when VCC falls below 2.93 V ±3.5% or MR is pulled low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93 V ±3.5% over −40°C to +125°C - ensures reliable detection of 2.93 V supply degradation before system instability |
| Reset Timeout | 1120 ms minimum - guarantees sufficient hold time for full system stabilization during power-up |
| Supply Current | 5 μA typical at 3.6 V - enables ultra-low-power operation in battery-backed or energy-sensitive systems |
| VCC Operating Range | 1 V to 5.5 V - allows reset assertion even during deep brownout conditions down to 1 V |
| MR Input Threshold | 0.3 × VCC (VIL) / 0.7 × VCC (VIH) - compatible with standard CMOS logic levels across supply voltages |
| RESET Output Type | Open-drain - permits wired-OR configuration and level-shifting with external pull-up to higher voltage rails |
| Temperature Range | −40°C to +125°C - qualified for under-hood automotive, industrial control, and safety-critical applications |
Pinout & Package
ADM6315-29D4ART-RL is housed in a 4-lead SOT-143 surface-mount package (RA-4), measuring 2.9 mm × 1.6 mm × 1.15 mm, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground Reference | 0 V return path for all internal circuitry and reset comparator reference |
| 2 (RESET) | Active-Low Open-Drain Output | Sinks current when asserted; requires external pull-up to define logic-high level and voltage domain |
| 3 (MR) | Debounced Manual Reset Input | Active-low input with 100 ns glitch rejection; pulls RESET low when asserted |
| 4 (VCC) | Monitored Supply Voltage | Primary power input and voltage source for internal reference and comparator operation |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.93 V threshold | ±3.5% tolerance over −40°C to +125°C enables accurate detection of 2.93 V rail collapse without false resets |
| 1120 ms minimum reset timeout | Guarantees extended reset hold time for complex microprocessor initialization sequences and power supply settling |
| Open-drain RESET output | Supports multi-source reset arbitration and interface to higher-voltage logic domains via external pull-up resistor |
| Debounced MR input | Rejects noise spikes <100 ns and reliably accepts ≥1 μs pulses, eliminating need for external RC filtering |
| Ultra-low 5 μA supply current | Minimizes standby power draw in always-on monitoring circuits and extends battery life in portable instruments |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
Use Scenario: Monitors 2.93 V auxiliary supply powering CAN transceivers and sensor signal conditioning in engine bay environments. IC Role / Device Role / Timing Role: Supervisory circuit asserting system-wide reset during cold cranking voltage sag or alternator dropout. Use Value: Prevents CAN bus lockup and sensor data corruption by guaranteeing 1120 ms reset hold time while 12 V rail recovers. | Use Scenario: Ensures deterministic startup of FPGA-based I/O controller after field power interruption in factory automation cabinets. IC Role / Device Role / Timing Role: Power-on reset generator with precise 2.93 V threshold and open-drain output compatible with FPGA reset pin requirements. Use Value: Eliminates race conditions during FPGA configuration by holding reset until 2.93 V rail stabilizes and internal clocks settle. |
| Medical Infusion Pump Controller | Railway Signaling Interface Board |
Use Scenario: Provides fail-safe reset for ARM Cortex-M4 MCU managing motor control and pressure sensing in battery-operated infusion devices. IC Role / Device Role / Timing Role: Low-power (5 μA) supervisory IC asserting reset if main 3.3 V rail drops below 2.93 V due to battery depletion or load surge. Use Value: Enables safe shutdown before motor driver misfire occurs, meeting IEC 62304 Class C software safety requirements. | Use Scenario: Monitors isolated 2.93 V logic supply feeding optocoupler inputs on trackside signaling interface cards exposed to EMI-rich rail environments. IC Role / Device Role / Timing Role: High-immunity supervisory IC with 100 ns glitch rejection on MR and robust transient immunity per Figure 7. Use Value: Prevents spurious resets from traction motor switching noise, maintaining continuous signaling integrity per EN 50121-3-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US29D4-T | Same 2.93 V threshold and 1120 ms timeout; 1.2 μA max quiescent current vs. 15 μA max for ADM6315-29D4ART-RL at +125°C | Lower power consumption suits battery-powered designs; identical SOT-143 footprint and pinout | Select for ultra-low-power portable applications where sub-μA sleep current is critical |
| TPS3808G33DBVR | 2.93 V threshold not available; closest is 3.08 V (TPS3808G31); 200 ms default timeout (adjustable via capacitor), not fixed 1120 ms | Requires external timing capacitor; lacks manual reset input; different pin assignment (MR absent) | Select only if adjustable timeout and no manual reset requirement align with system architecture |
Compared with MAX6315US29D4-T and TPS3808G31DBVR, ADM6315-29D4ART-RL offers guaranteed 1120 ms fixed timeout and integrated debounced MR in a known-pinout SOT-143 package, making it optimal for deterministic reset timing and field-serviceable systems requiring manual recovery.
Availability
ADM6315-29D4ART-RL is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, medical infusion pump controllers, and railway signaling interface boards requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM6315-29D4ART-RL 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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The ADM6315 family was designed specifically for robust microprocessor supervision in harsh environments, delivering accurate voltage monitoring, fixed reset timing, and manual reset capability in minimal footprint packages.
FAQ
What is the exact reset threshold voltage of ADM6315-29D4ART-RL and how does it vary with temperature?
The ADM6315-29D4ART-RL has a nominal reset threshold of 2.93 V, with tolerance of ±2.5% over −40°C to +85°C and ±3.5% over −40°C to +125°C. Its temperature coefficient is 60 ppm/°C, meaning threshold drift is bounded and predictable across the full operating range, ensuring consistent brownout detection in automotive and industrial settings.
Does ADM6315-29D4ART-RL require an external pull-up resistor on the RESET pin?
Yes, ADM6315-29D4ART-RL features an open-drain RESET output and requires an external pull-up resistor to define the logic-high voltage level. The value depends on sink current (up to 3.2 mA) and target rise time; a typical 10 kΩ resistor to 3.3 V or 5 V is used. This design enables flexible voltage-level interfacing and wired-OR reset bus configurations.
What is the minimum pulse width required on the MR pin to trigger a reset with ADM6315-29D4ART-RL?
The MR input of ADM6315-29D4ART-RL is guaranteed to accept negative-going pulses of ≥1 μs duration. Pulses shorter than 100 ns are rejected as glitches. This built-in debounce eliminates the need for external RC filters and ensures reliable manual reset activation using mechanical switches or digital signals.
Can ADM6315-29D4ART-RL operate when the monitored VCC supply drops below 2.93 V but remains above 1 V?
Yes, ADM6315-29D4ART-RL continues to assert RESET as long as VCC remains above 1 V, even if below the 2.93 V threshold. Its functional operation is specified down to VCC = 1 V, allowing sustained reset assertion during deep brownout events - a critical feature for preventing partial system operation in safety-critical applications.
Is ADM6315-29D4ART-RL pin-compatible with other members of the ADM6315 family?
Yes, all ADM6315 variants-including ADM6315-29D4ART-RL-are pin-compatible within the SOT-143 package. Pin 1 = GND, Pin 2 = RESET, Pin 3 = MR, Pin 4 = VCC. This allows direct substitution between trip point and timeout variants (e.g., D1/D2/D3/D4 suffixes) without PCB changes, simplifying BOM rationalization and design reuse.
ADM6315-29D4ART-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
ADM6315-29D4ART-RL FAQ
1.How can I place an order for ADM6315-29D4ART-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6315-29D4ART-RL 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 ADM6315-29D4ART-RL reliable?
The price and inventory of ADM6315-29D4ART-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6315-29D4ART-RL is usually 5 days.
3.What payment methods are accepted for ADM6315-29D4ART-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6315-29D4ART-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6315-29D4ART-RL?
ADM6315-29D4ART-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6315-29D4ART-RL 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 ADM6315-29D4ART-RL?
For technical support, including ADM6315-29D4ART-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6315-29D4ART-RL requirements.
6.How does Aetrix verify that ADM6315-29D4ART-RL is sourced from the original manufacturer or authorized distributors?
All ADM6315-29D4ART-RL 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 ADM6315-29D4ART-RL meets industry standards.
7.What is the process for return or replacement of ADM6315-29D4ART-RL?
All ADM6315-29D4ART-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADM6315-29D4ART-RL, 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 ADM6315-29D4ART-RL part is unused and in its original packaging.
Return procedure for ADM6315-29D4ART-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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