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Analog Devices Inc. ADM1811-5AKS-RL7
- Part No.:
- ADM1811-5AKS-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1811-5AKS-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,267
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Product details
Overview
ADM1811-5AKS-RL7 from Analog Devices is a 3-pin open-drain microprocessor reset circuit with internal 5.5 kΩ pull-up resistor, 4.62 V typical reset threshold, 150 ms reset timeout, and −40°C to +105°C operating range-designed for reliable power-on reset supervision of 5 V systems in industrial controllers and embedded instrumentation.
For engineers reviewing the ADM1811-5AKS-RL7 datasheet, ADM1811-5AKS-RL7 pinout, ADM1811-5AKS-RL7 application, or ADM1811-5AKS-RL7 equivalent, this page delivers verified functional specifications, SC70 package details, reset timing behavior, and direct alternatives for voltage-monitoring circuit design and BOM optimization.
Technical Context
The ADM1811-5AKS-RL7 implements a precision bandgap-based voltage comparator with hysteresis and a fixed 150 ms power-up delay timer. Its open-drain output with integrated 5.5 kΩ pull-up enables direct interface to microcontroller reset inputs requiring active-low assertion and external pull-up elimination.
It operates across 1.2 V to 5.5 V supply range while consuming only 4–10 µA at 3.6 V, and guarantees reset assertion during VCC fall below 4.50 V (min) and release after VCC rises above 4.75 V (max), ensuring robust immunity to supply transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62 V typical (4.50 V min / 4.75 V max); ensures reliable detection of 5 V supply brownout before system instability. |
| Reset Timeout | 150 ms typical (100–250 ms range); provides guaranteed hold time for safe microprocessor initialization after power stabilization. |
| Supply Range | 1.2 V to 5.5 V; supports operation even during deep undervoltage conditions while maintaining reset assertion. |
| Quiescent Current | 4 µA at 3.6 V (10 µA max); enables ultra-low-power supervision in battery-backed or energy-constrained systems. |
| Output Type | Open-drain with 5.5 kΩ internal pull-up; eliminates need for external resistor and simplifies PCB layout for active-low reset signaling. |
| Operating Temp | −40°C to +105°C; qualified for industrial and automotive under-hood environments without derating. |
| Package | SC70-3 (KS-3); 2.0 mm × 2.1 mm footprint with 0.65 mm pitch-ideal for space-constrained embedded designs. |
Pinout & Package
ADM1811-5AKS-RL7 is housed in a 3-lead SC70 (KS-3) package with gull-wing leads, JEDEC-compliant outline, and 0.65 mm lead pitch. Thermal impedance is 146°C/W (θJA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RST) | Active-low open-drain reset output | Pulled low when VCC < threshold; floats high (via internal 5.5 kΩ) when VCC ≥ threshold + timeout - directly drives MCU nRESET pins. |
| 2 (VCC) | Supply voltage input | Monitored rail input; device draws current from this node and asserts reset if voltage falls outside trip window. |
| 3 (GND) | Ground reference | 0 V return path for internal comparator and output stage; must be low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pull-up resistor | 5.5 kΩ ±40%; removes external component, reduces BOM count, and ensures consistent rise time on RST line. |
| Fixed 150 ms reset timeout | Guaranteed minimum 100 ms, typ 150 ms, max 250 ms; eliminates need for external RC timing network and improves repeatability. |
| Low supply current | 4 µA at 3.6 V; enables use in always-on monitoring circuits without impacting system standby power budget. |
| Wide temperature range | −40°C to +105°C operation with <±1.5% threshold drift; maintains accuracy across industrial thermal cycling. |
| SC70-3 package | 2.0 mm × 2.1 mm footprint; saves >50% board area vs. SOT-23 while maintaining compatible reflow profile. |
Applications
| Industrial PLC Controller | Medical Diagnostic Instrument |
|---|---|
Use Scenario: Power sequencing in modular I/O backplanes where 5 V logic rails must stabilize before FPGA configuration begins. IC Role / Device Role / Timing Role: Supervises 5 V VCC rail and asserts active-low reset to FPGA and ARM Cortex-M7 until stable for ≥150 ms. Use Value: Prevents partial configuration lockup by guaranteeing reset remains asserted through worst-case 5 V rail settling (e.g., after hot-swap insertion). |
Use Scenario: Battery-backed patient monitor with isolated 5 V analog front-end powering ADC and sensor interfaces. IC Role / Device Role / Timing Role: Monitors main 5 V supply and holds microcontroller in reset during brownout events caused by transient load spikes. Use Value: Ensures no spurious data capture or corrupted EEPROM writes during brief supply dips-critical for FDA compliance. |
| Automotive Body Control Module | Network Edge Gateway |
Use Scenario: 12 V-to-5 V DC/DC-powered BCM managing door locks, lighting, and CAN transceivers. IC Role / Device Role / Timing Role: Provides cold-cranking tolerant reset supervision: asserts reset during cranking-induced 5 V sag (<4.5 V) and holds for 150 ms post-recovery. Use Value: Eliminates MCU lockup during engine start, enabling deterministic recovery without manual reset or watchdog intervention. |
Use Scenario: Fanless industrial gateway with PoE-derived 5 V rail powering ARM SoC, Wi-Fi/BLE radio, and RS-485 transceivers. IC Role / Device Role / Timing Role: Detects PoE negotiation glitches or cable fault-induced 5 V droop and initiates controlled reboot sequence via SoC reset pin. Use Value: Maintains network uptime by preventing silent hangs-resets only when voltage violation exceeds hysteresis and timeout, avoiding false triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | 4.63 V threshold (±2.5%), 140 ms timeout, SOT-23-3 package, no internal pull-up (requires external resistor). | Requires external 100 kΩ pull-up; slightly tighter threshold tolerance but longer propagation delay (20 µs vs. 10 µs). | Choose when tighter threshold accuracy is prioritized over board area and BOM simplicity. |
| TPS3808G01DBVR | 4.63 V threshold (±0.5%), adjustable timeout (1.25 ms to 10 s), SOT-23-6 package, push-pull output. | Requires external timing capacitor; supports programmable delay but occupies larger footprint and higher cost. | Choose when system requires configurable reset duration or push-pull drive strength beyond 8 mA sink capability. |
Compared with ADM1811-5AKS-RL7, MAX809SEUR+T adds external component overhead and less precise timing, while TPS3808G01DBVR trades SC70 compactness and zero-BOM simplicity for configurability-making ADM1811-5AKS-RL7 optimal for cost-sensitive, space-constrained 5 V reset supervision.
Availability
ADM1811-5AKS-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic instruments, and automotive body control modules requiring stable component supply with full RoHS compliance and traceable lot documentation.
Supply support for ADM1811-5AKS-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 series was designed specifically for cost-sensitive, space-constrained microprocessor reset supervision-delivering precision voltage monitoring, fixed timing, and integrated features in ultra-small packages for embedded systems.
FAQ
What is the exact reset threshold voltage of ADM1811-5AKS-RL7?
The ADM1811-5AKS-RL7 has a nominal reset threshold of 4.62 V, with guaranteed minimum of 4.50 V and maximum of 4.75 V across −40°C to +105°C. This 4.62 V trip point is optimized for reliable supervision of standard 5 V power rails, ensuring reset assertion before logic-level violations occur in connected microcontrollers or FPGAs.
Does ADM1811-5AKS-RL7 require an external pull-up resistor?
No, ADM1811-5AKS-RL7 integrates a 5.5 kΩ internal pull-up resistor on its open-drain RST pin, eliminating the need for external components. This simplifies PCB layout, reduces BOM count, and ensures consistent rise time-unlike alternatives such as MAX809 that mandate external pull-ups.
What is the reset timeout duration of ADM1811-5AKS-RL7 and how is it implemented?
The ADM1811-5AKS-RL7 provides a fixed 150 ms typical reset timeout (100–250 ms range) after VCC rises above the threshold. This delay is generated by an internal RC timer-not software or external components-ensuring deterministic, repeatable power-up sequencing without calibration or layout dependencies.
Can ADM1811-5AKS-RL7 be used for 3.3 V supply monitoring?
No, ADM1811-5AKS-RL7 is specified for 4.62 V threshold and intended for 5 V systems. For 3.3 V monitoring, Analog Devices offers ADM1816-10AKSZ-RL7 (2.88 V threshold) or ADM1816-5AKSZ-RL7 (3.06 V threshold), both in the same SC70-3 package and featuring identical open-drain + internal pull-up architecture.
What package type and dimensions does ADM1811-5AKS-RL7 use?
ADM1811-5AKS-RL7 uses the SC70-3 (KS-3) package: 2.0 mm × 2.1 mm body size, 0.65 mm lead pitch, gull-wing leads, and JEDEC-compliant outline. Its thermal impedance is 146°C/W (θJA), supporting operation up to +105°C ambient without derating in standard PCB layouts.
ADM1811-5AKS-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:
- 4.62V
- 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-RL7 FAQ
1.How can I place an order for ADM1811-5AKS-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1811-5AKS-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 ADM1811-5AKS-RL7 reliable?
The price and inventory of ADM1811-5AKS-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1811-5AKS-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1811-5AKS-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1811-5AKS-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1811-5AKS-RL7?
ADM1811-5AKS-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1811-5AKS-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 ADM1811-5AKS-RL7?
For technical support, including ADM1811-5AKS-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1811-5AKS-RL7 requirements.
6.How does Aetrix verify that ADM1811-5AKS-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1811-5AKS-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 ADM1811-5AKS-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1811-5AKS-RL7?
All ADM1811-5AKS-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1811-5AKS-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 ADM1811-5AKS-RL7 part is unused and in its original packaging.
Return procedure for ADM1811-5AKS-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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