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Analog Devices Inc. ADM1811-5AKSZ-RL7
- Part No.:
- ADM1811-5AKSZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1811-5AKSZ-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,037
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Product details
Overview
ADM1811-5AKSZ-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 initialization in 5 V embedded systems.
For engineers reviewing the ADM1811-5AKSZ-RL7 datasheet, ADM1811-5AKSZ-RL7 pinout, ADM1811-5AKSZ-RL7 application, or ADM1811-5AKSZ-RL7 equivalent, this page delivers verified functional specs, SC70 package details, reset timing behavior, and validated alternative options for industrial and automotive power monitoring designs.
Technical Context
The ADM1811-5AKSZ-RL7 implements a precision voltage comparator with hysteresis and a fixed 150 ms power-up delay timer to prevent premature system startup. Its open-drain output with integrated 5.5 kΩ pull-up enables direct interface to microcontroller reset inputs requiring active-low assertion.
It operates across 1.2 V to 5.5 V supply range while drawing only 4–10 µA quiescent current, and features ±1.5% trip point accuracy over temperature-ensuring stable reset assertion during brown-out conditions in space-constrained applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62 V typical (min 4.50 V, max 4.75 V); ensures reliable detection of 5 V supply stabilization before release. |
| Reset Timeout | 150 ms typical (100–250 ms range); provides guaranteed hold time for safe microprocessor boot sequence. |
| Supply Range | 1.2 V to 5.5 V; supports operation even during low-voltage brown-out events without false triggering. |
| Quiescent Current | 4 µA at 3.6 V (10 µA max); enables ultra-low-power monitoring in battery-backed or energy-sensitive systems. |
| Output Type | Open-drain with 5.5 kΩ internal pull-up; eliminates need for external resistor and simplifies PCB layout. |
| Operating Temp | −40°C to +105°C; qualified for under-hood automotive and industrial control environments. |
| Package | SC70-3 (KS-3); 2.0 mm × 2.1 mm footprint, compatible with high-density SMT assembly. |
Pinout & Package
ADM1811-5AKSZ-RL7 uses a 3-lead SC70 (KS-3) package with exposed pad not electrically connected. Pin 1 = RST (active-low open-drain output), Pin 2 = VCC (monitored supply input), Pin 3 = GND (0 V reference).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-low reset output | Drives low when VCC < 4.62 V; remains low for 150 ms after VCC rises above threshold-directly connects to µP /RESET pin. |
| VCC | Supply voltage input | Monitors the 5 V rail; device draws current only from this pin-no separate bias supply required. |
| GND | Ground reference | Common 0 V return for comparator, timer, and output stage-must be low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pull-up resistor | 5.5 kΩ internal pull-up eliminates external component and reduces BOM count in reset signal path. |
| Precision trip point | ±1.5% tolerance over temperature ensures consistent reset behavior across full industrial operating range. |
| Fixed 150 ms timeout | Guaranteed minimum reset pulse width prevents race conditions during power ramp-up in multi-rail systems. |
| Low supply current | 4 µA at 3.6 V enables use in always-on monitoring circuits without impacting system standby power budget. |
| SC70 package | 2.0 mm × 2.1 mm footprint saves board space versus SOT-23-critical for portable and compact controller designs. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors main 5 V supply in programmable logic controller CPU board during cold start and transient load switching. IC Role / Device Role / Timing Role: Active-low reset supervisor ensuring firmware execution begins only after stable 5 V rail is confirmed for ≥150 ms. Use Value: Prevents corrupted register initialization or watchdog lockup caused by marginal VCC rise time in noisy factory environments. | Use Scenario: Embedded in door module ECU to supervise 5 V domain powering CAN transceiver and microcontroller. IC Role / Device Role / Timing Role: Voltage monitor with fixed 150 ms reset hold time guarantees clean boot after vehicle ignition cycle transitions. Use Value: Eliminates need for external RC network while meeting ISO 16750-2 cold-cranking voltage dip immunity requirements. |
| Medical Diagnostic Handheld | Smart Energy Meter |
Use Scenario: Powers on ARM-based application processor in portable ultrasound device using single 5 V DC/DC output. IC Role / Device Role / Timing Role: Open-drain reset generator with internal pull-up interfaces directly to processor's active-low /RESET pin. Use Value: Reduces component count and layout area-critical for handheld form factor with strict EMC and thermal constraints. | Use Scenario: Supervises auxiliary 5 V rail feeding metrology ADC and real-time clock in DIN-rail mounted electricity meter. IC Role / Device Role / Timing Role: Low-current (4 µA) reset circuit maintaining supervision during extended battery backup mode. Use Value: Extends backup runtime while guaranteeing deterministic restart after AC power restoration or brown-out recovery. |
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 threshold, 140 ms timeout, SOT-23-3 package, no internal pull-up (requires external resistor) | Same 5 V monitoring function but higher layout overhead due to external 47 kΩ pull-up requirement | Select when legacy SOT-23 footprint compatibility is mandatory and board space allows external resistor |
| TPS3808G01DBVR | 4.63 V threshold, adjustable 20–3000 ms timeout via capacitor, SOT-23-5 package, push-pull output | Offers programmable delay and higher drive strength but requires additional pin and external timing cap | Select when system demands configurable reset duration or higher sink current (>20 mA) capability |
Compared with MAX809SEUR+T and TPS3808G01DBVR, the ADM1811-5AKSZ-RL7 delivers fixed 150 ms timing with zero external components and SC70 size advantage-ideal for cost- and space-sensitive 5 V microcontroller reset applications where delay adjustability is unnecessary.
Availability
ADM1811-5AKSZ-RL7 is available at Aetrix Electronics and suitable for industrial controllers, automotive ECUs, medical handhelds, and smart meters requiring stable component supply with guaranteed long-term availability.
Supply support for ADM1811-5AKSZ-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 robust, low-cost microprocessor reset supervision in harsh environments-emphasizing precision threshold accuracy, fixed timing reliability, and minimal external component count.
FAQ
What is the exact reset threshold voltage of ADM1811-5AKSZ-RL7?
The ADM1811-5AKSZ-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 value is specified in Table 1 of the Rev. F datasheet and applies exclusively to the -5 variant, confirming its suitability for 5 V supply monitoring.
Does ADM1811-5AKSZ-RL7 require an external pull-up resistor?
No, ADM1811-5AKSZ-RL7 integrates a 5.5 kΩ internal pull-up resistor on the RST pin, eliminating the need for external components. This is explicitly stated in the "INTERNAL PULL-UP RESISTOR" section of the datasheet and confirmed in Figure 14's typical application diagram.
What package type does ADM1811-5AKSZ-RL7 use?
ADM1811-5AKSZ-RL7 uses the SC70-3 (KS-3) package, measuring 2.0 mm × 2.1 mm with 0.65 mm lead pitch. This is documented in the Ordering Guide (Page 9) and Outline Dimensions (Page 8) of the Rev. F datasheet, distinguishing it from SOT-23 variants in the same family.
Can ADM1811-5AKSZ-RL7 be used for 3.3 V supply monitoring?
No-ADM1811-5AKSZ-RL7 is configured for 5 V monitoring with a 4.62 V threshold. For 3.3 V systems, Analog Devices specifies ADM1811-10AKSZ-RL7 (4.35 V) or ADM1816-x variants (2.88 V/2.55 V). Using the -5 version on 3.3 V would result in permanent reset assertion.
What is the reset timeout duration of ADM1811-5AKSZ-RL7?
The ADM1811-5AKSZ-RL7 provides a fixed 150 ms reset active time after VCC rises above threshold, with a guaranteed range of 100–250 ms. This is defined in the "RESET ACTIVE TIME" row of Table 1 and forms part of the device's core safety mechanism for microprocessor initialization.
ADM1811-5AKSZ-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
ADM1811-5AKSZ-RL7 FAQ
1.How can I place an order for ADM1811-5AKSZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1811-5AKSZ-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 ADM1811-5AKSZ-RL7 reliable?
The price and inventory of ADM1811-5AKSZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1811-5AKSZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1811-5AKSZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1811-5AKSZ-RL7 transactions.
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4.How is shipping managed for ADM1811-5AKSZ-RL7?
ADM1811-5AKSZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1811-5AKSZ-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 ADM1811-5AKSZ-RL7?
For technical support, including ADM1811-5AKSZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1811-5AKSZ-RL7 requirements.
6.How does Aetrix verify that ADM1811-5AKSZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1811-5AKSZ-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 ADM1811-5AKSZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1811-5AKSZ-RL7?
All ADM1811-5AKSZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1811-5AKSZ-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 ADM1811-5AKSZ-RL7 part is unused and in its original packaging.
Return procedure for ADM1811-5AKSZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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