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Analog Devices Inc. ADM6315-31D1ARTRL7
- Part No.:
- ADM6315-31D1ARTRL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
ADM6315-31D1ARTRL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,321
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Product details
Overview
ADM6315-31D1ARTRL7 from Analog Devices is a precision open-drain microprocessor supervisory circuit in SOT-143 package, monitoring VCC at 3.08 V ±2.5% over −40°C to +85°C, asserting reset for ≥1 ms after power-up or brownout, and supporting manual reset with 1 μs minimum pulse width. It operates down to VCC > 1 V and draws only 5 μA typical supply current.
For engineers reviewing the ADM6315-31D1ARTRL7 datasheet, ADM6315-31D1ARTRL7 pinout, ADM6315-31D1ARTRL7 application, or ADM6315-31D1ARTRL7 equivalent, key selection criteria include reset threshold accuracy (±2.5% over temperature), guaranteed 1 ms minimum timeout, open-drain RESET output compatibility with higher-voltage logic, and SOT-143 footprint suitability for space-constrained embedded systems.
Technical Context
The ADM6315-31D1ARTRL7 implements a precision bandgap-based voltage reference comparator with built-in hysteresis and temperature-compensated trip point (60 ppm/°C). Its reset assertion timing is defined by an internal RC oscillator calibrated for 1 ms minimum timeout under all operating conditions.
It features a debounced manual reset input (MR) with 100 ns glitch rejection and guaranteed response to ≥1 μs pulses, plus an open-drain RESET output capable of sinking 3.2 mA at VCC > 4.25 V while remaining functional down to VCC = 1 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08 V ±2.5% over −40°C to +85°C - ensures reliable detection of 1.8% supply degradation at nominal 3.3 V rails. |
| Reset Timeout | 1 ms minimum - guarantees sufficient hold time for microprocessor core and peripheral initialization during power-up. |
| Supply Current | 5 μA typical at 5.5 V - enables use in battery-backed or ultra-low-power systems without significant drain. |
| VCC Operating Range | 1 V to 5.5 V - supports operation during deep brownout and allows supervision of low-voltage logic supplies. |
| MR Input Threshold | 0.8 V (VIL) / 2.4 V (VIH) at VTH > 4 V - compatible with standard CMOS/TTL logic levels for manual or system-initiated reset. |
| RESET Output Type | Open-drain - permits wired-OR configuration, level-shifting, and interface with higher-voltage I/O domains. |
| Package | SOT-143 (RA-4) - 4-pin surface-mount package with 1.3 mm × 2.1 mm footprint for high-density PCB layouts. |
Pinout & Package
ADM6315-31D1ARTRL7 is housed in a 4-lead SOT-143 (RA-4) package with gull-wing leads, thermal resistance θJA = 330°C/W, and RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground Reference | 0 V return path for all internal circuitry and reset comparator reference; must be connected directly to system ground plane. |
| 2 (RESET) | Active-Low Open-Drain Output | Asserts low during power-up, brownout, or MR activation; requires external pull-up to define logic-high level and voltage domain. |
| 3 (MR) | Debounced Manual Reset Input | Active-low input accepting ≥1 μs pulses; internally pulled up (32–100 kΩ); floats high when unused. |
| 4 (VCC) | Monitored Supply Voltage | Primary power input and voltage sense node; device functions correctly down to 1 V, enabling brownout detection before logic failure. |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage monitor | 3.08 V threshold with ±2.5% tolerance over −40°C to +85°C - eliminates need for external trimming in 3.3 V systems. |
| Guaranteed 1 ms reset timeout | Minimum assertion period independent of temperature and supply variation - ensures deterministic microcontroller startup sequencing. |
| Ultra-low quiescent current | 5 μA typical at 5.5 V - extends battery life in portable instruments and enables always-on supervision in energy-harvesting nodes. |
| Robust manual reset interface | 100 ns glitch rejection + 1 μs minimum pulse acceptance - tolerates noisy switch contacts and digital noise without spurious resets. |
| Wide VCC operating range | Functions down to 1 V - detects brownout earlier than most 3.3 V microcontrollers (which typically fail below 2.7 V). |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Supervising 3.3 V microcontroller power rail in programmable logic controllers exposed to wide ambient temperature swings and EMI-rich factory environments. IC Role / Device Role / Timing Role: Voltage supervisor ensuring deterministic reset assertion during cold-start, brownout, and hot-swap events. Use Value: Prevents firmware corruption by guaranteeing ≥1 ms reset hold time even at −40°C, while 5 μA supply current minimizes standby power draw. |
Use Scenario: Monitoring 3.3 V supply to body control unit (BCU) microcontroller in automotive door modules with manual reset via physical switch. IC Role / Device Role / Timing Role: Brownout detector and manual reset coordinator with glitch-immune MR input for mechanical switch interfaces. Use Value: 100 ns glitch rejection prevents false resets from switch bounce or load-dump transients; open-drain RESET supports 5 V-compatible pull-up for CAN subsystem interfacing. |
| Portable Medical Instruments | Smart Energy Meters |
Use Scenario: Ensuring reliable boot sequence in handheld glucose meters powered by single-cell Li-ion batteries with variable discharge profiles. IC Role / Device Role / Timing Role: Low-voltage supervisor detecting VCC drop below 3.08 V and asserting reset before ADC or display ICs malfunction. Use Value: Operation down to VCC = 1 V enables early brownout detection before battery reaches critical depletion, preserving data integrity during shutdown. |
Use Scenario: Supervising 3.3 V supply to metrology SoC and real-time clock in DIN-rail mounted electricity meters requiring long-term reliability. IC Role / Device Role / Timing Role: Precision reset generator with ±2.5% threshold stability over industrial temperature range (−40°C to +85°C). Use Value: Eliminates field failures caused by marginal supply dips during transformer inrush or grid fluctuations, supported by 330°C/W thermal resistance for sustained operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US31D2+T | 3.08 V threshold, 20 ms reset timeout (vs. 1 ms), 10 μA max supply current, SOT-23-4 package | Longer timeout better suited for systems requiring extended power stabilization; larger SOT-23 footprint vs. SOT-143 | Select when longer reset hold time is required and board layout accommodates SOT-23. |
| TPS3808G33DBVR | 3.3 V threshold (not 3.08 V), 200 ms default timeout (adjustable), 1.5 μA typical supply current, SOT-23-5 package | Higher threshold and adjustable timeout offer flexibility but require design validation for 3.3 V rail margin; extra pin for enable/disable | Select when ultra-low current (<2 μA) is critical and 3.3 V threshold suffices for system margin analysis. |
Compared with MAX6315US31D2+T and TPS3808G33DBVR, ADM6315-31D1ARTRL7 provides the shortest guaranteed reset timeout (1 ms) in the smallest footprint (SOT-143), making it optimal for fast-booting, space-constrained 3.3 V microcontroller systems where precise 3.08 V brownout detection is required.
Availability
ADM6315-31D1ARTRL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and portable medical instruments requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for ADM6315-31D1ARTRL7 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, automotive, communications, and healthcare markets since 1965.
The ADM6315 family was designed specifically for robust, low-power microprocessor supervision in harsh environments, emphasizing precision threshold accuracy, wide temperature operation, and minimal board space usage.
FAQ
What is the exact reset threshold voltage of ADM6315-31D1ARTRL7 and how does it vary with temperature?
The ADM6315-31D1ARTRL7 has a nominal reset threshold of 3.08 V, with tolerance of ±2.5% over the −40°C to +85°C operating range and ±3.5% over −40°C to +125°C. Its temperature coefficient is 60 ppm/°C, meaning threshold drift is tightly controlled across temperature. This specification ensures consistent brownout detection in 3.3 V systems regardless of ambient conditions, and ADM6315-31D1ARTRL7 maintains this performance without external calibration.
Does ADM6315-31D1ARTRL7 support manual reset, and what are the electrical requirements for the MR pin?
Yes, ADM6315-31D1ARTRL7 includes a debounced manual reset (MR) input that accepts active-low pulses ≥1 μs in duration and rejects glitches <100 ns. At VTH > 4 V, MR logic low is ≤0.8 V and logic high is ≥2.4 V; at VTH < 4 V, thresholds scale to 0.3×VCC and 0.7×VCC. The internal pull-up resistor ranges from 32 kΩ to 100 kΩ, so no external pull-up is needed unless noise immunity enhancement is required. ADM6315-31D1ARTRL7 thus simplifies system-level reset control with minimal external components.
What is the minimum VCC voltage at which ADM6315-31D1ARTRL7 remains functional and asserts reset?
ADM6315-31D1ARTRL7 asserts reset reliably down to VCC > 1 V, and its RESET output remains functional (capable of sinking 80 μA) even at that level. This capability enables early brownout detection well before most 3.3 V microcontrollers reach their minimum operating voltage (~2.7 V), preventing erratic behavior or data corruption. The ADM6315-31D1ARTRL7 continues to monitor and respond to supply faults across its full 1 V to 5.5 V operating range.
Is ADM6315-31D1ARTRL7 pin-compatible with other supervisory ICs, and which ones?
ADM6315-31D1ARTRL7 is explicitly pin-compatible with the ADM811 series in the same SOT-143 package, sharing identical pinout (GND, RESET, MR, VCC) and functional behavior. It is not pin-compatible with SOT-23 or SC-70 packaged alternatives due to differing lead count and arrangement. Engineers migrating from ADM811 designs can substitute ADM6315-31D1ARTRL7 without PCB changes, retaining the same layout while gaining improved temperature stability and lower quiescent current.
What package type and RoHS status does ADM6315-31D1ARTRL7 use?
ADM6315-31D1ARTRL7 is supplied in a 4-lead SOT-143 (RA-4) package with gull-wing leads, measuring 1.3 mm × 2.1 mm, and features RoHS-compliant lead-free construction. The "R" in the part number denotes tape-and-reel packaging, and "L7" indicates standard reel quantity (750 units). This compact, environmentally compliant package supports automated assembly and meets IPC/JEDEC standards for surface-mount reliability. ADM6315-31D1ARTRL7 is fully qualified for industrial temperature operation (−40°C to +85°C).
ADM6315-31D1ARTRL7 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:
- 3.08V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
ADM6315-31D1ARTRL7 FAQ
1.How can I place an order for ADM6315-31D1ARTRL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6315-31D1ARTRL7 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 ADM6315-31D1ARTRL7 reliable?
The price and inventory of ADM6315-31D1ARTRL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6315-31D1ARTRL7 is usually 5 days.
3.What payment methods are accepted for ADM6315-31D1ARTRL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6315-31D1ARTRL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6315-31D1ARTRL7?
ADM6315-31D1ARTRL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6315-31D1ARTRL7 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 ADM6315-31D1ARTRL7?
For technical support, including ADM6315-31D1ARTRL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6315-31D1ARTRL7 requirements.
6.How does Aetrix verify that ADM6315-31D1ARTRL7 is sourced from the original manufacturer or authorized distributors?
All ADM6315-31D1ARTRL7 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 ADM6315-31D1ARTRL7 meets industry standards.
7.What is the process for return or replacement of ADM6315-31D1ARTRL7?
All ADM6315-31D1ARTRL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6315-31D1ARTRL7, 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 ADM6315-31D1ARTRL7 part is unused and in its original packaging.
Return procedure for ADM6315-31D1ARTRL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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