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Analog Devices Inc. ADM1811-10AKSZ-RL7
- Part No.:
- ADM1811-10AKSZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1811-10AKSZ-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,130
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Product details
Overview
ADM1811-10AKSZ-RL7 from Analog Devices is a precision 4.35 V supply voltage monitor IC with active-low open-drain reset output and internal 5.5 kΩ pull-up resistor, designed for reliable power-on reset in microprocessor systems operating at −40°C to +105°C. It delivers 150 ms reset timeout, 8 mA sink capability, and ultra-low 4–10 µA quiescent current at 3.6 V, enabling robust startup sequencing in space-constrained embedded controllers.
For engineers reviewing the ADM1811-10AKSZ-RL7 datasheet, ADM1811-10AKSZ-RL7 pinout, ADM1811-10AKSZ-RL7 application, or ADM1811-10AKSZ-RL7 equivalent, key selection criteria include its 4.35 V trip point tolerance (±0.14 V), SC70-3 package footprint, open-drain compatibility with external logic levels, and guaranteed reset assertion during brownout conditions down to 1.2 V supply.
Technical Context
The ADM1811-10AKSZ-RL7 integrates a precision bandgap reference, comparator with hysteresis, and 150 ms monostable delay circuit to ensure clean system initialization after power ramp-up or recovery from undervoltage. Its internal pull-up resistor eliminates need for external components while maintaining compatibility with standard CMOS/TTL reset inputs.
It operates across full industrial temperature range (−40°C to +105°C) with supply voltage range 1.2 V to 5.5 V, and features fast 10 µs falling-edge response and 100–250 ms rising-edge reset timeout-ensuring immunity to short transients while guaranteeing safe boot timing for ARM Cortex-M and PIC microcontrollers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.35 V typical (min 4.25 V, max 4.49 V); ensures reliable detection of 5 V rail collapse before MCU lockup. |
| Reset Timeout | 150 ms typical (100–250 ms); provides sufficient time for 5 V supply stabilization before releasing reset to processor. |
| Supply Range | 1.2 V to 5.5 V; supports operation during deep brownout and enables use with backup batteries or low-voltage supervisors. |
| Quiescent Current | 4 µA at 3.6 V (max 10 µA); minimizes standby power in always-on IoT edge nodes and battery-backed systems. |
| Output Type | Active-low open-drain with 5.5 kΩ internal pull-up; simplifies interface to multiple voltage domains without external resistors. |
| Sink Current | 8 mA at VOUT = 0.4 V; drives standard microcontroller reset pins directly, including those requiring >2 mA hold current. |
| Operating Temp | −40°C to +105°C; qualified for under-hood automotive ECUs, industrial PLCs, and outdoor telecom equipment. |
Pinout & Package
ADM1811-10AKSZ-RL7 is housed in a RoHS-compliant 3-lead SC70 (KS-3) package measuring 2.00 mm × 1.25 mm × 0.95 mm, optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-low open-drain reset output | Pulled low when VCC < 4.25 V; remains low for ≥100 ms after VCC rises above threshold-guarantees clean MCU reset release. |
| VCC | Monitored supply input | Connects directly to 5 V rail; senses voltage with ±1.2% accuracy over temperature and supplies internal bias for comparator and delay circuit. |
| GND | Analog ground reference | 0 V return path for all internal circuits; must be connected to system ground plane with low-inductance trace to avoid false resets. |
Key Features
| Feature | Design Value |
|---|---|
| Internal pull-up resistor | 5.5 kΩ typical (3.5–7.5 kΩ); eliminates external component count and reduces BOM cost in reset signal routing. |
| Reset timeout accuracy | ±33% over temperature (100–250 ms); ensures deterministic boot timing without external RC network drift. |
| Low-voltage operation | Functional down to 1.2 V supply; enables supervision of auxiliary rails and fault-tolerant fail-safe monitoring paths. |
| Fast transient immunity | Rejects spikes <10 µs duration; prevents spurious resets caused by switching noise on shared power planes. |
| SC70 footprint | 2.0 mm × 1.25 mm body; saves >40% board area vs. SOT-23 while maintaining identical pinout and thermal performance (θJA = 146°C/W). |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Supervises 5 V microcontroller supply in programmable logic controller operating in factory environments with wide ambient temperature swings and EMI-rich motor drive zones. IC Role / Device Role / Timing Role: Voltage monitor providing active-low reset signal with 150 ms timeout to ensure deterministic firmware boot after line voltage recovery. Use Value: Prevents corrupted register states during brownout by holding reset until stable 5 V rail is confirmed-eliminating watchdog timeouts and field-replaceable unit failures. | Use Scenario: Monitors 5 V domain powering CAN transceivers and door-lock actuators in vehicle body electronics exposed to cold cranking (down to 6 V) and load dump events. IC Role / Device Role / Timing Role: Reset supervisor asserting low signal during undervoltage, with internal pull-up enabling direct connection to 3.3 V logic-level MCU reset pin. Use Value: Guarantees safe shutdown and restart sequence without external level-shifting components-reducing bill-of-materials and improving ASIL-B compliance margin. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Ensures fail-safe reset of ARM-based safety-critical controller during AC/DC adapter dropout or battery switchover in Class II medical devices. IC Role / Device Role / Timing Role: Precision 4.35 V threshold detector with 10 µs response to rapid voltage collapse, preventing unsafe actuator activation during power transition. Use Value: Meets IEC 60601-1 requirements for power interruption recovery by delivering repeatable reset timing independent of external capacitor aging or temperature drift. | Use Scenario: Supervises isolated 5 V DC-DC output powering metrology SoC and RF communication module in utility-grade electricity meters deployed in unconditioned outdoor enclosures. IC Role / Device Role / Timing Role: Low-quiescent-current (4 µA) reset generator ensuring >10-year battery backup runtime while maintaining accurate brownout detection at −40°C. Use Value: Extends primary battery life without compromising reset reliability-validated across full industrial temperature range per ANSI C12.1 and IEC 62056 standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | 4.63 V reset threshold, SOT-23-3 package, no internal pull-up (requires external resistor) | Designed for 5 V systems with tighter threshold tolerance (±1.5%), but lacks integrated pull-up and SC70 option | Select when higher threshold accuracy is required and board layout allows external 47 kΩ pull-up resistor. |
| TPS3808G12DBVR | 4.38 V threshold, adjustable delay via capacitor, 1.5 µA quiescent current, SOT-23-6 | Offers programmable reset timeout and lower power, but requires additional passive component and larger footprint | Choose when variable reset timing or sub-µA standby current is critical, and six-pin routing is acceptable. |
Compared with MAX809SEUR+T and TPS3808G12DBVR, ADM1811-10AKSZ-RL7 delivers optimal balance of SC70 size, integrated pull-up, and guaranteed 150 ms timeout-making it ideal for cost-sensitive, space-constrained designs where fixed timing and minimal external parts are prioritized.
Availability
ADM1811-10AKSZ-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply with guaranteed long-term availability and full RoHS compliance.
Supply support for ADM1811-10AKSZ-RL7 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 family was engineered specifically for microprocessor reset supervision in harsh environments-emphasizing precision threshold accuracy, wide temperature operation, and minimal external component count for reliable system boot integrity.
FAQ
What is the exact reset threshold voltage for ADM1811-10AKSZ-RL7?
The ADM1811-10AKSZ-RL7 has a nominal reset threshold of 4.35 V, with guaranteed minimum of 4.25 V and maximum of 4.49 V across −40°C to +105°C. This 4.35 V trip point is optimized for monitoring standard 5 V power rails while allowing margin for ripple and tolerance stack-up-ensuring ADM1811-10AKSZ-RL7 asserts reset before downstream logic becomes unreliable.
Does ADM1811-10AKSZ-RL7 require an external pull-up resistor?
No, ADM1811-10AKSZ-RL7 includes an internal 5.5 kΩ pull-up resistor on the RST pin, eliminating the need for external components. This integrated feature simplifies design, reduces PCB area, and improves reliability by removing solder joint risks associated with discrete resistors-making ADM1811-10AKSZ-RL7 drop-in ready for most 3.3 V or 5 V microcontroller reset inputs.
What package type is used for ADM1811-10AKSZ-RL7?
ADM1811-10AKSZ-RL7 uses the SC70-3 (KS-3) package: a 3-lead, RoHS-compliant surface-mount outline measuring 2.00 mm × 1.25 mm × 0.95 mm. Its compact footprint provides 40% area reduction versus SOT-23 while maintaining identical pin numbering and thermal performance (θJA = 146°C/W), making ADM1811-10AKSZ-RL7 ideal for high-density portable and automotive PCBs.
Can ADM1811-10AKSZ-RL7 operate with supply voltages below 5 V?
Yes, ADM1811-10AKSZ-RL7 functions across 1.2 V to 5.5 V supply range, enabling use in brownout detection, backup power monitoring, and multi-rail systems. While its 4.35 V threshold targets 5 V rails, the device remains fully operational-even asserting reset-down to 1.2 V input, ensuring ADM1811-10AKSZ-RL7 maintains supervision integrity during severe undervoltage events.
What is the reset timeout duration of ADM1811-10AKSZ-RL7?
ADM1811-10AKSZ-RL7 provides a guaranteed reset timeout of 100–250 ms after VCC rises above threshold, with 150 ms typical. This monostable delay ensures the monitored 5 V rail stabilizes before releasing the active-low reset signal-preventing premature MCU execution. The timing is internally generated, eliminating capacitor drift and temperature sensitivity inherent in RC-based solutions, so ADM1811-10AKSZ-RL7 delivers consistent boot behavior across all operating conditions.
ADM1811-10AKSZ-RL7 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:
- 4.35V
- 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
ADM1811-10AKSZ-RL7 FAQ
1.How can I place an order for ADM1811-10AKSZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1811-10AKSZ-RL7 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 ADM1811-10AKSZ-RL7 reliable?
The price and inventory of ADM1811-10AKSZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1811-10AKSZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1811-10AKSZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1811-10AKSZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1811-10AKSZ-RL7?
ADM1811-10AKSZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1811-10AKSZ-RL7 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 ADM1811-10AKSZ-RL7?
For technical support, including ADM1811-10AKSZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1811-10AKSZ-RL7 requirements.
6.How does Aetrix verify that ADM1811-10AKSZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1811-10AKSZ-RL7 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 ADM1811-10AKSZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1811-10AKSZ-RL7?
All ADM1811-10AKSZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1811-10AKSZ-RL7, 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 ADM1811-10AKSZ-RL7 part is unused and in its original packaging.
Return procedure for ADM1811-10AKSZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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