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Analog Devices Inc. ADM1811-5AKS-REEL
- Part No.:
- ADM1811-5AKS-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1811-5AKS-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,970
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Product details
Overview
ADM1811-5AKS-REEL from Analog Devices is a 3-pin open-drain microprocessor reset circuit with internal pull-up resistor, designed for monitoring 5 V power supplies. It features a 4.62 V typical reset threshold, 150 ms reset timeout, −40°C to +105°C operating temperature range, and SC70 (KS-3) package - used in embedded controllers and industrial microprocessor systems requiring reliable power-on initialization.
For engineers reviewing the ADM1811-5AKS-REEL datasheet, ADM1811-5AKS-REEL pinout, ADM1811-5AKS-REEL application, or ADM1811-5AKS-REEL equivalent, key selection criteria include reset threshold accuracy, open-drain output compatibility with external logic levels, internal pull-up value, supply current under 16 µA, and SC70 footprint suitability for space-constrained PCB layouts.
Technical Context
The ADM1811-5AKS-REEL implements a precision voltage comparator with hysteresis and a fixed 150 ms power-up delay timer. Its internal reference ensures stable trip point across temperature (±1.5% over −40°C to +105°C), while the open-drain output with integrated 5.5 kΩ pull-up enables flexible interface to diverse reset inputs including those requiring active-low assertion and wired-OR configuration.
This device operates without external components: the internal pull-up eliminates need for discrete resistors, and its 9–16 µA supply current supports low-power system design. It asserts reset when VCC falls below 4.62 V (typical) and holds reset active for ≥100 ms after VCC rises above threshold, ensuring safe microprocessor startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62 V typical; ensures reliable detection of 5 V supply brownout before system instability occurs |
| Reset Timeout | 150 ms typical; provides guaranteed stabilization window for microprocessor core and peripherals |
| Supply Current | 9–16 µA at VCC = 5.5 V; enables integration into battery-backed or ultra-low-power systems |
| Output Type | Open-drain with internal 5.5 kΩ pull-up; simplifies interface to 3.3 V or 5 V logic without external resistor |
| Operating Temp | −40°C to +105°C; qualified for industrial and automotive under-hood applications |
| Package | SC70-3 (KS-3); 2.0 × 1.25 × 0.9 mm footprint ideal for compact PCBs |
| Reset Polarity | Active-low; directly compatible with standard microcontroller /RESET pins requiring low-level assertion |
Pinout & Package
ADM1811-5AKS-REEL is housed in a 3-lead SC70 (KS-3) package with gull-wing leads, compliant with EIAJ SC70 standards. Pin 1 is VCC, Pin 2 is GND, and Pin 3 is RST - an active-low open-drain output with internal pull-up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Supply Input | Monitored 5 V rail; powers internal comparator and timer; valid from 1.2 V to 5.5 V |
| GND (Pin 2) | Ground Reference | 0 V return path for all internal circuits; must be connected to system ground plane |
| RST (Pin 3) | Reset Output | Open-drain active-low signal; sinks up to 8 mA; floats high via internal 5.5 kΩ pull-up when not asserted |
Key Features
| Feature | Design Value |
|---|---|
| Internal Pull-Up Resistor | 5.5 kΩ typical; eliminates external component count and layout area for reset line termination |
| Fixed Reset Timeout | 150 ms typical delay; guarantees sufficient power supply stabilization before release of /RESET |
| Low Supply Current | ≤16 µA at 5.5 V; reduces quiescent load on main supply during standby or sleep modes |
| Wide Temperature Range | −40°C to +105°C operation; supports deployment in harsh industrial environments without derating |
| SC70 Package | 2.0 × 1.25 mm footprint; enables high-density routing and automated assembly in miniaturized designs |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power sequencing in programmable logic controller CPU boards where 5 V rail must stabilize before firmware execution. IC Role / Device Role / Timing Role: Voltage monitor and timed reset generator asserting active-low /RESET until VCC exceeds 4.62 V and remains stable for 150 ms. Use Value: Prevents corrupted register initialization or flash memory writes during marginal power conditions. | Use Scenario: Reset supervision for microcontrollers managing door locks, lighting, and HVAC in vehicle cabin electronics. IC Role / Device Role / Timing Role: Active-low open-drain reset supervisor interfacing directly to 3.3 V MCU reset input via internal pull-up. Use Value: Eliminates need for external pull-up resistor, reducing BOM cost and PCB area in ASIL-B relevant modules. |
| Medical Diagnostic Handheld | Smart Energy Meter |
Use Scenario: Cold-start reliability in portable ultrasound or glucose meter devices powered by Li-ion batteries with regulated 5 V DC-DC output. IC Role / Device Role / Timing Role: Monitors 5 V supply derived from battery; asserts reset if voltage sags below 4.62 V due to load transients. Use Value: Ensures deterministic boot sequence even during battery voltage droop under peak processing loads. | Use Scenario: Firmware integrity protection in utility-grade electricity meters exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Industrial-grade reset supervisor operating continuously from −40°C to +105°C with ±1.5% threshold stability. Use Value: Maintains accurate reset behavior across seasonal extremes without calibration or compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | 4.63 V threshold, SOT-23-3 package, 14 µA max supply current, no internal pull-up (requires external resistor) | Requires external 47–100 kΩ pull-up for 3.3 V logic; slightly tighter threshold tolerance (±1.5% vs ±2%) | Select when board already includes pull-up or when tighter initial threshold accuracy is prioritized over component count reduction |
| TPS3808G18DBVR | 1.8 V threshold option only; adjustable via external resistor network; 2.9 µA typical supply current; SOT-23-6 package | Not a drop-in replacement - requires redesign for 4.62 V monitoring and uses 6-pin footprint | Choose only if programmable threshold and ultra-low quiescent current outweigh footprint and complexity penalties |
Compared with MAX809SEUR+T and TPS3808G18DBVR, the ADM1811-5AKS-REEL uniquely integrates the pull-up resistor and delivers exact 4.62 V trip point in a minimal 3-pin SC70 package - optimizing for BOM simplicity and space-constrained 5 V microcontroller reset applications.
Availability
ADM1811-5AKS-REEL is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and portable medical devices requiring stable component supply and long-term lifecycle support.
Supply support for ADM1811-5AKS-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADM181x series was developed specifically for cost-sensitive, space-constrained microprocessor reset supervision - delivering precision voltage monitoring, fixed timing, and simplified interface in miniature packages for industrial and automotive control systems.
FAQ
What is the reset threshold voltage of the ADM1811-5AKS-REEL?
The ADM1811-5AKS-REEL has a nominal reset threshold of 4.62 V, with a specified range of 4.50 V (min) to 4.75 V (max) over temperature. This precise trip point ensures reliable detection of 5 V supply undervoltage events before microprocessor malfunction occurs, and is factory-trimmed for consistency across production lots.
Does the ADM1811-5AKS-REEL require an external pull-up resistor?
No, the ADM1811-5AKS-REEL includes an internal pull-up resistor of 5.5 kΩ (typical) on the RST pin. This eliminates the need for an external component, simplifying schematic design and reducing PCB area - especially valuable in SC70-based compact layouts where the ADM1811-5AKS-REEL is commonly deployed.
What is the reset timeout duration for the ADM1811-5AKS-REEL?
The ADM1811-5AKS-REEL provides a fixed reset timeout of 150 ms (typical), with a guaranteed minimum of 100 ms and maximum of 250 ms. This delay begins when VCC rises above the threshold and ensures the monitored 5 V supply has fully stabilized before releasing the active-low reset signal to the microprocessor.
Which package type does the ADM1811-5AKS-REEL use?
The ADM1811-5AKS-REEL is supplied in the SC70-3 (KS-3) package - a 3-lead, gull-wing surface-mount outline measuring 2.0 mm × 1.25 mm × 0.9 mm. This JEDEC-compliant package enables high-density placement and reflow-compatible assembly, matching the footprint requirements of space-constrained embedded designs using the ADM1811-5AKS-REEL.
Can the ADM1811-5AKS-REEL monitor voltages other than 5 V?
No - the ADM1811-5AKS-REEL is specifically configured for 5 V supply monitoring with a 4.62 V threshold. For 3.3 V or 2.5 V rails, Analog Devices offers variants like ADM1816-10AKSZ-REEL (2.88 V) or ADM1816-20AKSZ-REEL (2.55 V); the ADM1811-5AKS-REEL's trip point is fixed and not adjustable.
ADM1811-5AKS-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.62V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
ADM1811-5AKS-REEL FAQ
1.How can I place an order for ADM1811-5AKS-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1811-5AKS-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 ADM1811-5AKS-REEL reliable?
The price and inventory of ADM1811-5AKS-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1811-5AKS-REEL is usually 5 days.
3.What payment methods are accepted for ADM1811-5AKS-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1811-5AKS-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1811-5AKS-REEL?
ADM1811-5AKS-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1811-5AKS-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 ADM1811-5AKS-REEL?
For technical support, including ADM1811-5AKS-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1811-5AKS-REEL requirements.
6.How does Aetrix verify that ADM1811-5AKS-REEL is sourced from the original manufacturer or authorized distributors?
All ADM1811-5AKS-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 ADM1811-5AKS-REEL meets industry standards.
7.What is the process for return or replacement of ADM1811-5AKS-REEL?
All ADM1811-5AKS-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM1811-5AKS-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 ADM1811-5AKS-REEL part is unused and in its original packaging.
Return procedure for ADM1811-5AKS-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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