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Analog Devices Inc. ADM1815-10AKS-REEL
- Part No.:
- ADM1815-10AKS-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1815-10AKS-REEL.pdf
- Description:
- IC MONITOR RESET 2.88V SC70 TR
- Quantity:
- Payment:
- Shipping:
Inventory:19,479
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Product details
Overview
ADM1815-10AKS-REEL from Analog Devices is a precision active-low microprocessor reset circuit in SC70-3 package, monitoring 3.3 V supplies with 2.88 V typical trip point, 150 ms reset timeout, and 9–16 µA supply current across −40°C to +105°C. It ensures safe system initialization in embedded controllers and industrial microprocessor systems.
For engineers reviewing the ADM1815-10AKS-REEL datasheet, ADM1815-10AKS-REEL pinout, ADM1815-10AKS-REEL application, or ADM1815-10AKS-REEL equivalent, key selection factors include trip voltage tolerance (±1.5%), push-pull output drive capability (350 µA source / 8 mA sink), reset timing accuracy over temperature, and compatibility with 3.3 V logic reset inputs without external components.
Technical Context
The ADM1815-10AKS-REEL integrates a precision voltage reference, comparator with hysteresis, and a 150 ms monostable delay circuit to generate a clean, glitch-free active-low reset signal. Its internal threshold is trimmed to 2.88 V (typ) with ±1.5% variation over full temperature range.
This device operates from 1.2 V to 5.5 V supply, draws ≤16 µA at 5.5 V, and features push-pull output architecture-eliminating need for external pull-up resistors-making it suitable for direct interface with ARM Cortex-M, PIC, and STM32 microcontroller reset pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.88 V typical, ±1.5% over −40°C to +105°C - ensures reliable detection of 3.3 V supply brownout before MCU malfunction. |
| Reset Timeout | 150 ms typical (100–250 ms range) - guarantees sufficient power stabilization time before releasing reset to processor. |
| Supply Current | 9–16 µA at VCC = 5.5 V - enables ultra-low-power operation in battery-backed or energy-constrained systems. |
| Output Type | Active-low push-pull - drives reset line directly without external pull-up, compatible with standard CMOS/TTL reset inputs. |
| Operating Temp | −40°C to +105°C - qualified for industrial and automotive under-hood applications requiring extended thermal robustness. |
| Package | SC70-3 (KS-3), 2.0 × 2.1 mm footprint - supports high-density PCB layouts while maintaining thermal resistance of 146°C/W. |
Pinout & Package
ADM1815-10AKS-REEL uses a 3-lead SC70 (KS-3) package with exposed pad not electrically connected. Pin 1 is RST (active-low reset output), Pin 2 is VCC (monitored supply input), and Pin 3 is GND (0 V reference).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-low reset output | Drives low for ≥150 ms after VCC falls below 2.88 V; remains low for 150 ms after VCC rises above threshold - ensures deterministic reset assertion timing. |
| VCC | Supply voltage input | Monitored rail (1.2–5.5 V); powers internal circuitry and defines reset threshold reference - no separate reference pin required. |
| GND | Ground reference | 0 V return path for all internal biasing and comparator operation - must be low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage monitoring | 2.88 V trip point with ±1.5% max tolerance over temperature - eliminates need for external resistor divider calibration. |
| Guaranteed reset timing | 150 ms nominal timeout with 100–250 ms min/max spec - prevents premature release during supply ramp-up transients. |
| Low quiescent current | ≤16 µA at 5.5 V - extends battery life in portable instrumentation and remote sensor nodes. |
| Direct MCU interface | Push-pull output drives standard CMOS reset inputs without pull-up resistor - reduces BOM count and layout area. |
| Wide operating voltage | 1.2 V to 5.5 V supply range - supports use with 1.8 V, 2.5 V, 3.3 V, and 5 V systems from single part number family. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power-on reset sequencing for ARM-based programmable logic controller running real-time control firmware. IC Role / Device Role / Timing Role: Active-low reset supervisor ensuring CPU remains held until 3.3 V I/O rail stabilizes post-power-up. Use Value: Prevents corrupted register writes and undefined state entry during unstable supply conditions, improving field reliability. | Use Scenario: Reset management for microcontroller supervising door lock actuators, window motors, and lighting drivers. IC Role / Device Role / Timing Role: Monitors 3.3 V domain powering CAN transceiver and MCU core; asserts reset on brownout or cold-cranking dip. Use Value: Maintains deterministic boot behavior during vehicle start-stop cycles where battery voltage drops to 6–8 V. |
| Medical Patient Monitor | Smart Energy Meter |
Use Scenario: Ensuring safe startup of FPGA-configured data acquisition subsystem after AC/DC power restoration. IC Role / Device Role / Timing Role: Generates synchronized reset pulse to both microcontroller and ADC clock domain upon 3.3 V rail validation. Use Value: Eliminates metastability risk in multi-clock-domain systems by enforcing minimum reset hold time per JEDEC JESD84-A44. | Use Scenario: Supervising metering SoC during grid voltage sags or backup battery switchover events. IC Role / Device Role / Timing Role: Detects 3.3 V supply droop below 2.88 V and holds reset for 150 ms to allow supercapacitor buffer to sustain operation. Use Value: Enables seamless transition between main and backup power without firmware corruption or measurement loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | 2.8 V nominal reset threshold, ±2% tolerance, SOT-23-3 package, 14 µA max supply current | Lacks guaranteed 150 ms timeout; reset duration varies with supply slew rate | Select when cost sensitivity outweighs precise timeout requirement and board space allows SOT-23 instead of SC70. |
| TPS3808G18DBVR | 1.8 V fixed threshold, adjustable timeout via capacitor, 2.5 µA typical quiescent current, SOT-23-5 | Requires external timing capacitor; higher pin count; optimized for ultra-low-power sleep modes | Prefer for battery-powered IoT endpoints needing sub-µA standby current and programmable reset delay. |
Compared with MAX809SEUR+T and TPS3808G18DBVR, the ADM1815-10AKS-REEL delivers tighter trip tolerance (±1.5% vs ±2%), factory-trimmed 150 ms timeout (vs. slew-rate dependent), and SC70-3 footprint - making it optimal for space-constrained industrial controllers requiring deterministic reset behavior without design compromises.
Availability
ADM1815-10AKS-REEL is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body electronics, medical patient monitors, and smart energy meters requiring stable component supply and long-term production continuity.
Supply support for ADM1815-10AKS-REEL 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 ADM181x series was designed specifically for reliable, low-cost microprocessor reset supervision in space- and power-constrained embedded systems - emphasizing precision threshold accuracy, guaranteed timing, and minimal external component count.
FAQ
What is the exact reset threshold voltage for ADM1815-10AKS-REEL?
The ADM1815-10AKS-REEL has a typical reset threshold of 2.88 V, with a guaranteed range of 2.80 V to 2.97 V across −40°C to +105°C. This value is factory-trimmed and specified in Table 1 of the Rev. F datasheet under "VCC TRIP POINT" for the -10 variant. The threshold directly monitors 3.3 V supplies to detect brownout conditions before system instability occurs.
Does ADM1815-10AKS-REEL require an external pull-up resistor on the RST pin?
No, ADM1815-10AKS-REEL does not require an external pull-up resistor. It features an active-low push-pull output stage capable of sourcing 350 µA and sinking 8 mA, enabling direct connection to standard CMOS microcontroller reset inputs. This eliminates BOM cost and layout area associated with discrete pull-up resistors.
What is the reset timeout duration of ADM1815-10AKS-REEL and how is it implemented?
The ADM1815-10AKS-REEL provides a guaranteed reset active time of 150 ms typical (100–250 ms min/max), measured from VCC crossing the threshold until RST returns high. This is achieved via an internal monostable circuit-not dependent on external components-ensuring consistent timing across voltage, temperature, and process variations.
Can ADM1815-10AKS-REEL monitor a 2.5 V supply?
No, ADM1815-10AKS-REEL is specifically configured for 2.88 V threshold and optimized for 3.3 V supply monitoring. For 2.5 V applications, select ADM1815-20AKSZ-RL7 (2.55 V typical) or ADM1815-R22ARTZ-RL7 (2.18 V typical). Using ADM1815-10AKS-REEL on 2.5 V would result in permanent reset assertion since VCC remains below trip point.
Is ADM1815-10AKS-REEL RoHS compliant and what packaging format is supplied?
Yes, ADM1815-10AKS-REEL is RoHS compliant (indicated by the "Z" suffix) and supplied in tape-and-reel format per EIA-481 standard. The part uses SC70-3 (KS-3) package with JEDEC-compliant dimensions and lead-free matte tin finish, meeting IPC/JEDEC J-STD-020 moisture sensitivity level 1.
ADM1815-10AKS-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- -
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
ADM1815-10AKS-REEL FAQ
1.How can I place an order for ADM1815-10AKS-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1815-10AKS-REEL 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 ADM1815-10AKS-REEL reliable?
The price and inventory of ADM1815-10AKS-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1815-10AKS-REEL is usually 5 days.
3.What payment methods are accepted for ADM1815-10AKS-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1815-10AKS-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1815-10AKS-REEL?
ADM1815-10AKS-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1815-10AKS-REEL 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 ADM1815-10AKS-REEL?
For technical support, including ADM1815-10AKS-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1815-10AKS-REEL requirements.
6.How does Aetrix verify that ADM1815-10AKS-REEL is sourced from the original manufacturer or authorized distributors?
All ADM1815-10AKS-REEL 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 ADM1815-10AKS-REEL meets industry standards.
7.What is the process for return or replacement of ADM1815-10AKS-REEL?
All ADM1815-10AKS-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM1815-10AKS-REEL, 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 ADM1815-10AKS-REEL part is unused and in its original packaging.
Return procedure for ADM1815-10AKS-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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