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Analog Devices Inc. ADM1818-5AKS-REEL
- Part No.:
- ADM1818-5AKS-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1818-5AKS-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,823
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Product details
Overview
ADM1818-5AKS-REEL from Analog Devices is a microprocessor reset circuit with open-drain output and internal pull-up resistor, designed to monitor 3.06 V (typical) supply voltage in embedded systems. It provides 150 ms reset timeout, operates across −40°C to +105°C, and supports manual push-button reset for system initialization in space-constrained applications.
For engineers reviewing the ADM1818-5AKS-REEL datasheet, ADM1818-5AKS-REEL pinout, ADM1818-5AKS-REEL application, or ADM1818-5AKS-REEL equivalent, key selection considerations include its SC70-3 package, 2.88 V/3.06 V trip point variants, push-button reset capability, and compatibility with 3.3 V power rails in industrial controllers and automotive ECUs.
Technical Context
The ADM1818-5AKS-REEL implements a precision voltage comparator with hysteresis and a fixed 150 ms power-up reset delay timer. Its internal reference ensures stable trip point accuracy over temperature, while the open-drain RST output with 5.5 kΩ typical internal pull-up enables flexible logic-level interfacing without external components.
This device belongs to the ADM181x family optimized for low-power, high-reliability reset supervision. Unlike push-pull variants, it requires no external pull-up and supports active-low reset assertion compatible with most microcontroller reset inputs, including those needing debounced manual reset via external switch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.06 V typical - precisely monitors 3.3 V supply rails with ±1.5% tolerance over temperature. |
| Reset Timeout | 150 ms typical - guarantees safe microprocessor startup after power stabilization. |
| Supply Range | 1.2 V to 5.5 V - supports operation during brown-out conditions and wide input voltage transients. |
| Quiescent Current | 4 µA at 3.6 V - enables battery-backed or ultra-low-power system monitoring. |
| Output Type | Open-drain with 5.5 kΩ internal pull-up - eliminates need for external resistor; compatible with 1.8 V–5 V logic. |
| Push-Button Response | 1 µs detect time, 150 ms reset hold - enables reliable manual reset with minimal PCB footprint. |
| Operating Temp | −40°C to +105°C - qualified for under-hood automotive and industrial control environments. |
Pinout & Package
ADM1818-5AKS-REEL is housed in a 3-lead SC70 (KS-3) package, measuring 2.00 mm × 2.10 mm × 0.95 mm, with gull-wing leads and JEDEC-compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-low open-drain reset output | Pulled low when VCC < threshold; floats high (via internal 5.5 kΩ) when asserted, enabling wired-OR reset bus sharing. |
| VCC | Supply voltage input | Monitored rail input; also powers internal circuitry; accepts 1.2 V–5.5 V with sub-µA quiescent draw. |
| GND | Ground reference | 0 V return for comparator reference and output stage; must be low-impedance for accurate threshold detection. |
Key Features
| Feature | Design Value |
|---|---|
| Internal pull-up resistor | 5.5 kΩ typical - removes need for external pull-up, reducing BOM count and layout area in compact designs. |
| Manual push-button support | Detects >1 µs button press and holds RST low for 150 ms - enables field-serviceable reset without firmware intervention. |
| Temperature-stable threshold | ±1.5% max deviation from 3.06 V over −40°C to +105°C - ensures reliable reset across automotive and industrial thermal cycles. |
| Low-power operation | 4 µA at 3.6 V - extends battery life in always-on monitoring applications such as telematics and sensor nodes. |
| SC70-3 footprint | 2.0 mm × 2.1 mm body - fits high-density PCBs where SOT-23 is too large, without sacrificing thermal performance (θJA = 146°C/W). |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 3.3 V I/O supply in programmable logic controller CPU board during cold cranking and load dump events. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brown-out detection with 150 ms timeout to prevent erratic MCU boot. Use Value: Ensures deterministic startup after voltage recovery; internal pull-up avoids routing constraints on dense control board layouts. | Use Scenario: Supervises 3.3 V domain powering CAN transceivers and door module microcontrollers in vehicle body electronics. IC Role / Device Role / Timing Role: Reset generator with manual override for service mode; detects supply dips below 3.06 V during alternator ripple or battery sag. Use Value: Eliminates external pull-up and debounce circuitry, reducing component count and qualification effort for AEC-Q100-compliant designs. |
| Medical Patient Monitor | Smart Energy Meter |
Use Scenario: Guarantees clean reset of ARM Cortex-M4-based data acquisition subsystem during AC power interruption and backup battery switchover. IC Role / Device Role / Timing Role: Low-current (4 µA) reset supervisor enabling >5-year battery life in standby; SC70 package fits tight front-panel PCB space. Use Value: Meets IEC 60601-1 leakage and reliability requirements without external passive components near sensitive analog sections. | Use Scenario: Monitors 3.3 V supply feeding metrology ADC and secure element in DIN-rail mounted electricity meter. IC Role / Device Role / Timing Role: Precision voltage monitor with 3.06 V threshold aligned to 3.3 V LDO output tolerance; supports field reset via front-panel button. Use Value: Reduces bill-of-materials by integrating pull-up and timing functions, simplifying EN 50470-3 compliance testing for long-term stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADM1816-5AKSZ-REEL | Same SC70-3 package, identical 3.06 V trip point and 150 ms timeout, but branded M77 (RoHS-compliant variant). | No functional difference; differs only in packaging marking and RoHS status. | Select when RoHS compliance and tape-and-reel delivery per Digi-Key/Mouser standard are required. |
| TPS3808G12DBVR | TI part with 1.2 V threshold, push-pull output, and adjustable delay; requires external pull-up for open-drain emulation. | Not pin-compatible; lacks integrated push-button reset and internal pull-up; higher quiescent current (1.1 µA min vs. 4 µA). | Choose only if adjustable delay or different threshold is needed; not a drop-in replacement due to output architecture and pinout mismatch. |
Compared with ADM1816-5AKSZ-REEL, ADM1818-5AKS-REEL offers identical supervision functionality but with non-RoHS branding (M8K), while TPS3808G12DBVR requires redesign for pull-up and reset timing-making ADM1818-5AKS-REEL optimal for cost-sensitive, space-constrained 3.3 V reset applications requiring zero external components.
Availability
ADM1818-5AKS-REEL is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical patient monitors requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for ADM1818-5AKS-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 product line was engineered specifically for reliable, low-cost microprocessor reset supervision in harsh environments-emphasizing precision threshold accuracy, ultra-low power, and minimal external component count across automotive, industrial, and medical applications.
FAQ
What is the exact reset threshold voltage for ADM1818-5AKS-REEL?
The ADM1818-5AKS-REEL has a nominal reset threshold of 3.06 V (typical), with guaranteed range of 2.98 V to 3.15 V over −40°C to +105°C. This value is factory-trimmed and specified in Table 1 of the Rev. F datasheet, making ADM1818-5AKS-REEL suitable for precise 3.3 V supply monitoring where margin above 3.0 V is critical.
Does ADM1818-5AKS-REEL require an external pull-up resistor on the RST pin?
No, ADM1818-5AKS-REEL includes an internal pull-up resistor of 5.5 kΩ (typical) on the RST pin, eliminating the need for external components. This feature is explicitly documented in Table 1 under "INTERNAL PULL-UP RESISTOR" and confirmed in the ADM1813/ADM1818 section of the datasheet-ensuring ADM1818-5AKS-REEL operates correctly with only VCC and GND connections.
Can ADM1818-5AKS-REEL be used with a manual push-button reset?
Yes, ADM1818-5AKS-REEL supports manual reset via an external push-button connected between RST and GND. As described in the "ADM1813 AND ADM1818" section, pressing the button pulls RST low for >1 µs, triggering a 150 ms reset pulse upon release-enabling field service without firmware changes. This function is intrinsic to ADM1818-5AKS-REEL and requires no additional circuitry.
What package type and dimensions does ADM1818-5AKS-REEL use?
ADM1818-5AKS-REEL uses the SC70-3 (KS-3) package: 2.00 mm × 2.10 mm × 0.95 mm body size with gull-wing leads. Dimensions are fully compliant with EIAJ SC70 standards and detailed in Figure 16 (Page 8) of the Rev. F datasheet. The "AKS" in the part number explicitly denotes the KS-3 package option.
Is ADM1818-5AKS-REEL suitable for automotive applications?
Yes, ADM1818-5AKS-REEL is rated for −40°C to +105°C operation and features robust voltage threshold stability over temperature-key requirements for automotive body electronics. While not AEC-Q200 certified out-of-box, its specification alignment with automotive supply monitoring needs (e.g., 3.3 V CAN domains) and proven use in BCUs make ADM1818-5AKS-REEL a validated choice for non-safety-critical automotive subsystems.
ADM1818-5AKS-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:
- 3.06V
- 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
ADM1818-5AKS-REEL FAQ
1.How can I place an order for ADM1818-5AKS-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1818-5AKS-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 ADM1818-5AKS-REEL reliable?
The price and inventory of ADM1818-5AKS-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1818-5AKS-REEL is usually 5 days.
3.What payment methods are accepted for ADM1818-5AKS-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1818-5AKS-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1818-5AKS-REEL?
ADM1818-5AKS-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1818-5AKS-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 ADM1818-5AKS-REEL?
For technical support, including ADM1818-5AKS-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1818-5AKS-REEL requirements.
6.How does Aetrix verify that ADM1818-5AKS-REEL is sourced from the original manufacturer or authorized distributors?
All ADM1818-5AKS-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 ADM1818-5AKS-REEL meets industry standards.
7.What is the process for return or replacement of ADM1818-5AKS-REEL?
All ADM1818-5AKS-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM1818-5AKS-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 ADM1818-5AKS-REEL part is unused and in its original packaging.
Return procedure for ADM1818-5AKS-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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