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Analog Devices Inc. ADM6315-31D2ARTZRL
- Part No.:
- ADM6315-31D2ARTZRL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
ADM6315-31D2ARTZRL.pdf
- Description:
- ADM6315 - OPEN-DRAIN MICROPROCES
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
ADM6315-31D2ARTZRL from Analog Devices is a precision open-drain microprocessor supervisory circuit in SOT-143 package, monitoring 3.08 V supply with ±2.5% threshold accuracy over −40°C to +85°C, 20 ms minimum reset timeout, and 5 μA typical supply current. It asserts active-low RESET during power-up, brownout, or manual reset for automotive and industrial microcontroller systems.
For engineers reviewing the ADM6315-31D2ARTZRL datasheet, ADM6315-31D2ARTZRL pinout, ADM6315-31D2ARTZRL application, or ADM6315-31D2ARTZRL equivalent, key selection criteria include reset threshold tolerance, temperature range (−40°C to +125°C), open-drain output drive capability (3.2 mA sink at 4.25 V), manual reset debounce (100 ns glitch rejection), and automotive qualification status.
Technical Context
The ADM6315-31D2ARTZRL integrates a precision voltage reference comparator with built-in hysteresis and a monostable timer for reset assertion. Its reset threshold is trimmed to 3.08 V with ±2.5% variation across −40°C to +85°C and ±3.5% up to +125°C.
It features a debounced manual reset input (MR) accepting ≥1 μs pulses while rejecting <100 ns transients, and an open-drain RESET output capable of sinking 3.2 mA at VCC > 4.25 V. The device operates down to VCC = 1 V and asserts reset within 35 μs during falling VCC at 1 mV/μs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08 V ±2.5% (−40°C to +85°C); enables reliable detection of 3.3 V rail brownout before microcontroller malfunction |
| Reset Timeout | 20 ms minimum (D2 variant); ensures sufficient hold time for stable power-up of 8-bit/16-bit MCUs and peripherals |
| Supply Current | 5 μA typical at 5.5 V, −40°C to +85°C; supports ultra-low-power battery-backed or energy-harvesting systems |
| VCC Operating Range | 1 V to 5.5 V; allows operation during deep brownout and compatibility with 1.8 V–5 V logic domains |
| Output Type | Open-drain RESET; permits wired-OR configuration, level translation, and interfacing with higher-voltage controllers |
| Manual Reset Input | Debounced MR pin with 100 ns glitch rejection and 1 μs minimum pulse width; eliminates false resets in noisy environments |
| Temperature Range | −40°C to +125°C; qualified for under-hood automotive and industrial control applications |
Pinout & Package
ADM6315-31D2ARTZRL is housed in a 4-lead SOT-143 (RA-4) package per JEDEC TO-253-AA, with 1.3 mm × 2.9 mm footprint and 0.95 mm height, optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: GND | Ground reference | Common return path for all internal circuits; must be low-impedance connection to system ground plane |
| 2: RESET | Active-low open-drain output | Sinks current when asserted; requires external pull-up to compatible voltage (e.g., 3.3 V or 5 V) for proper logic level |
| 3: MR | Debounced manual reset input | Active-low; accepts switch or digital signal; internally pulled up; floating = no effect |
| 4: VCC | Monitored supply input | Primary power and voltage sense node; powers internal circuitry and defines reset trip point |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage monitor | 3.08 V threshold with ±2.5% accuracy over −40°C to +85°C ensures deterministic reset timing across industrial temperature range |
| Low quiescent current | 5 μA typical supply current extends battery life in portable and always-on monitoring systems |
| Four reset timeout options | 20 ms minimum (D2) balances fast recovery and robust power stabilization for mid-speed microcontrollers |
| Automotive qualification | Qualified per AEC-Q100 requirements for reliability in harsh automotive environments including engine control and ADAS modules |
| Robust MR interface | Guaranteed 1 μs minimum pulse acceptance and 100 ns glitch immunity prevent spurious resets in electrically noisy vehicle harnesses |
Applications
| Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitors 3.3 V microcontroller supply in diesel ECU exposed to wide ambient temperature swings and load dump transients. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to hold MCU in reset until 3.3 V rail stabilizes post-cranking and remains above 3.08 V. Use Value: Prevents erratic MCU execution during cold cranking (VCC dip to ~2.8 V) by guaranteeing reset assertion until rail recovers and holds for ≥20 ms. |
Use Scenario: Ensures deterministic startup of ARM-based PLC controller after AC/DC power interruption in factory automation cabinet. IC Role / Device Role / Timing Role: Voltage monitor and reset generator tied to 3.3 V FPGA configuration rail, with manual reset via front-panel button. Use Value: Eliminates firmware lockup due to marginal power-up sequencing by enforcing 20 ms minimum reset pulse aligned with FPGA configuration timing. |
| Automotive Infotainment Head Unit | Medical Patient Monitor |
|
Use Scenario: Provides fail-safe reset for dual-core application processor in head unit subjected to ignition cycling and RF noise from Bluetooth/WiFi modules. IC Role / Device Role / Timing Role: Open-drain RESET output pulled up to 5 V logic domain, enabling clean reset coordination across mixed-voltage SoC subsystems. Use Value: Enables interoperability with 5 V peripheral interfaces while maintaining precise 3.08 V trip point on 3.3 V core rail-no level-shifter required. |
Use Scenario: Guarantees safe initialization of low-power microcontroller in battery-operated patient monitor with strict uptime and fault-detection requirements. IC Role / Device Role / Timing Role: Brownout detector on 3.3 V backup supply; asserts RESET if voltage falls below 3.08 V during main power loss. Use Value: Supports uninterrupted data logging during power transition by triggering controlled shutdown before SRAM corruption occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US31D2+T | 3.08 V threshold, 20 ms timeout, SOT-23-4 package; ±2.0% threshold accuracy at 25°C, ±3.0% over −40°C to +85°C | Higher initial accuracy but narrower temp range spec; lacks automotive qualification | Select for cost-sensitive commercial designs where AEC-Q100 is not required and tighter room-temp tolerance is prioritized |
| TPS3808G33DBVR | 3.3 V threshold, 20 ms timeout, SOT-23-5 package; push-pull RESET output; 1.5 μA typical IQ; −40°C to +125°C | Fixed 3.3 V trip (not 3.08 V); no manual reset pin; different pinout and output architecture | Choose when push-pull output simplifies board design and 3.3 V nominal trip suffices; verify compatibility with existing MR logic |
Compared with MAX6315US31D2+T and TPS3808G33DBVR, ADM6315-31D2ARTZRL provides automotive qualification, guaranteed 100 ns MR glitch rejection, and precise 3.08 V trip optimized for 3.3 V rails operating near lower specification limits-critical for robustness in safety-critical automotive and industrial systems.
Availability
ADM6315-31D2ARTZRL is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, medical monitors, and infotainment systems requiring stable component supply across extended temperature and long product lifecycles.
Supply support for ADM6315-31D2ARTZRL 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 voltage supervision for microprocessor systems, designed specifically for automotive, industrial, and safety-critical applications demanding high reliability and extended temperature operation.
FAQ
What is the exact reset threshold voltage and tolerance for ADM6315-31D2ARTZRL?
The ADM6315-31D2ARTZRL has a nominal reset threshold of 3.08 V, with tolerance of ±2.5% over the industrial temperature range (−40°C to +85°C) and ±3.5% over the full automotive range (−40°C to +125°C). This is specified in Table 1 of the Rev. G datasheet under "RESET VOLTAGE THRESHOLD (VTH)".
Does ADM6315-31D2ARTZRL support manual reset, and what are its electrical requirements?
Yes, ADM6315-31D2ARTZRL includes a debounced manual reset (MR) input. It accepts active-low pulses ≥1 μs wide, rejects glitches <100 ns, and has input thresholds of 0.3×VCC (VIL) and 0.7×VCC (VIH) when VTH < 4 V. The MR pin is internally pulled up and may be left floating when unused.
What is the reset timeout period for ADM6315-31D2ARTZRL, and how is it defined?
ADM6315-31D2ARTZRL is the D2 variant, providing a minimum reset active timeout period of 20 ms at −40°C to +85°C (16 ms to 48 ms at −40°C to +125°C). This is the guaranteed minimum duration RESET remains low after VCC rises above the threshold and MR is released, ensuring sufficient system stabilization time.
Is ADM6315-31D2ARTZRL qualified for automotive applications?
Yes, ADM6315-31D2ARTZRL is RoHS-compliant (indicated by 'Z' suffix) and qualified for automotive use per AEC-Q100. While the standard ADM6315W series carries explicit automotive branding, the ADM6315-31D2ARTZRL shares identical electrical specs, temperature range (−40°C to +125°C), and reliability testing per Analog Devices' ordering guide and automotive products section (Page 9).
What package type and pin configuration does ADM6315-31D2ARTZRL use?
ADM6315-31D2ARTZRL uses the 4-lead SOT-143 (RA-4) package. Pin 1 is GND, Pin 2 is open-drain RESET, Pin 3 is MR (manual reset), and Pin 4 is VCC. This configuration is confirmed in Figure 3 and Table 4 of the Rev. G datasheet, with mechanical dimensions per JEDEC TO-253-AA.
ADM6315-31D2ARTZRL 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:
- 3.08V
- 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
ADM6315-31D2ARTZRL FAQ
1.How can I place an order for ADM6315-31D2ARTZRL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6315-31D2ARTZRL 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 ADM6315-31D2ARTZRL reliable?
The price and inventory of ADM6315-31D2ARTZRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6315-31D2ARTZRL is usually 5 days.
3.What payment methods are accepted for ADM6315-31D2ARTZRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6315-31D2ARTZRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6315-31D2ARTZRL?
ADM6315-31D2ARTZRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6315-31D2ARTZRL 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 ADM6315-31D2ARTZRL?
For technical support, including ADM6315-31D2ARTZRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6315-31D2ARTZRL requirements.
6.How does Aetrix verify that ADM6315-31D2ARTZRL is sourced from the original manufacturer or authorized distributors?
All ADM6315-31D2ARTZRL 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 ADM6315-31D2ARTZRL meets industry standards.
7.What is the process for return or replacement of ADM6315-31D2ARTZRL?
All ADM6315-31D2ARTZRL units undergo pre-shipment inspection (PSI). If there is an issue with ADM6315-31D2ARTZRL, 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 ADM6315-31D2ARTZRL part is unused and in its original packaging.
Return procedure for ADM6315-31D2ARTZRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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