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Analog Devices Inc. ADM1812-5ARTZ-REEL
- Part No.:
- ADM1812-5ARTZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM1812-5ARTZ-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,159
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Product details
Overview
ADM1812-5ARTZ-REEL from Analog Devices is a 5 V microprocessor reset circuit with active high push-pull output, 4.62 V typical reset threshold, 150 ms reset timeout, −40°C to +105°C operating range, and SOT-23 package. It ensures safe system initialization in embedded controllers and industrial microprocessor systems by holding reset until power stabilizes.
For engineers reviewing the ADM1812-5ARTZ-REEL datasheet, ADM1812-5ARTZ-REEL pinout, ADM1812-5ARTZ-REEL application, or ADM1812-5ARTZ-REEL equivalent, key selection factors include trip point accuracy (±1.5% over temperature), low quiescent current (9–16 µA), push-pull drive capability (350 µA source), and compatibility with standard microprocessor reset inputs without external components.
Technical Context
The ADM1812-5ARTZ-REEL integrates a precision voltage reference, comparator, and 150 ms delay timer to generate a clean, glitch-free active-high reset signal upon power-up or brownout. Its internal hysteresis prevents chatter near the 4.62 V threshold.
This device operates across the full industrial temperature range and uses a bandgap reference with low TC to maintain trip point stability. The push-pull output eliminates need for external pull-up resistors and directly drives CMOS/TTL reset inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62 V typical (4.50–4.75 V min/max); monitors 5 V supplies with ±1.5% tolerance over −40°C to +105°C |
| Reset Timeout | 150 ms typical (100–250 ms); guarantees safe microprocessor startup after VCC rise |
| Supply Range | 1.2 V to 5.5 V; functional down to 1.2 V but specified for 5 V monitoring |
| Quiescent Current | 9–16 µA at VCC = 5.5 V; enables low-power always-on monitoring |
| Output Type | Active high push-pull; delivers 350 µA source current, no external pull-up required |
| Operating Temp | −40°C to +105°C; qualified for industrial and automotive under-hood environments |
| Package | SOT-23 (RT-3); 3-pin, surface-mount, JEDEC-compliant footprint |
Pinout & Package
ADM1812-5ARTZ-REEL is housed in a 3-lead SOT-23 (RT-3) package with gull-wing leads, 1.3 mm pitch, and JEDEC TO-236-AB compliance. Thermal resistance θJA = 270°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active high reset output; remains high while VCC < 4.62 V, stays high for 150 ms after VCC rises above threshold |
| 2 | VCC | Supply input and monitored voltage rail; powers internal circuitry and serves as reference for threshold detection |
| 3 | GND | Ground reference for all internal functions and output stage; must be connected to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed 150 ms reset timeout | Ensures reliable microprocessor initialization even during slow-rising or noisy power rails |
| Active high push-pull output | Directly interfaces with standard microprocessor RESET# pins without pull-up resistors or level-shifting |
| Low supply current (9 µA min) | Minimizes standby power draw in battery-backed or energy-sensitive applications |
| Industrial temperature range | Validated operation from −40°C to +105°C supports deployment in harsh environments |
| Precision 4.62 V threshold | Matches nominal 5 V supply rails with tight tolerance, eliminating need for external resistor dividers |
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 ensuring deterministic boot sequence after cold start or brownout. Use Value: Prevents corrupted register states or flash writes by enforcing 150 ms minimum reset assertion after VCC exceeds 4.62 V. | Use Scenario: Reset supervision of microcontrollers managing door locks, lighting, and window motors in 12 V vehicle systems with local 5 V LDOs. IC Role / Device Role / Timing Role: Dedicated 5 V supply supervisor providing active-high reset compatible with Infineon/AURIX MCU reset inputs. Use Value: Eliminates external RC network while maintaining AEC-Q100-aligned timing and temperature stability. |
| Medical Diagnostic Instrument | Network Edge Router |
Use Scenario: Ensuring safe boot of ARM-based control processors in portable ultrasound or patient monitor units. IC Role / Device Role / Timing Role: Primary reset source triggered only when main 5 V supply reaches valid operating window. Use Value: Meets IEC 60601-1 reliability requirements via guaranteed reset hold time and low failure-in-time (FIT) rate. | Use Scenario: Supervising 5 V auxiliary rails powering FPGA configuration circuits and PHY management logic. IC Role / Device Role / Timing Role: Standalone reset generator decoupled from main SoC's internal POR, improving system-level fault containment. Use Value: Reduces BOM count by replacing discrete reset IC + pull-up + timing capacitor with single SOT-23 device. |
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, 140 ms timeout, SOT-23, active low open-drain output | Requires external pull-up; not pin-compatible due to active-low and open-drain topology | Select when system design already uses pull-up resistors and accepts active-low reset polarity |
| TPS3808G15DBVR | 4.63 V threshold, adjustable timeout (1.25 ms to 10 s), SOT-23, active high push-pull | Programmable delay adds flexibility but increases cost and layout complexity | Select when variable reset timeout is required beyond fixed 150 ms, e.g., for multi-rail sequencing |
Compared with MAX809SEUR+T and TPS3808G15DBVR, the ADM1812-5ARTZ-REEL offers tighter trip point accuracy (±1.5% vs ±2.5%), lower quiescent current (9 µA vs 12–20 µA), and guaranteed 150 ms timeout without external components-making it optimal for cost-sensitive, space-constrained industrial designs requiring deterministic reset behavior.
Availability
ADM1812-5ARTZ-REEL is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, medical diagnostic instruments, and network edge routers requiring stable component supply and RoHS-compliant packaging.
Supply support for ADM1812-5ARTZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The ADM181x series was designed specifically for reliable, low-cost microprocessor reset supervision in space-constrained industrial and automotive applications-emphasizing precision thresholding, fixed timing, and minimal external component count.
FAQ
What is the reset threshold voltage of the ADM1812-5ARTZ-REEL?
The ADM1812-5ARTZ-REEL has a typical reset threshold of 4.62 V, with a guaranteed range of 4.50 V to 4.75 V over the full −40°C to +105°C operating temperature range. This value is factory-trimmed and does not require external calibration or resistor networks.
Does the ADM1812-5ARTZ-REEL require an external pull-up resistor?
No, the ADM1812-5ARTZ-REEL features an active high push-pull output stage and does not require an external pull-up resistor. Its RST pin can directly drive standard CMOS or TTL reset inputs, simplifying PCB layout and reducing BOM count.
What is the reset timeout duration for the ADM1812-5ARTZ-REEL?
The ADM1812-5ARTZ-REEL provides a fixed reset timeout of 150 ms typical (100–250 ms min/max) after VCC rises above the 4.62 V threshold. This delay ensures stable power rail conditions before releasing the microprocessor from reset.
Is the ADM1812-5ARTZ-REEL RoHS compliant?
Yes, the ADM1812-5ARTZ-REEL is RoHS compliant, as indicated by the "Z" suffix in its part number per Analog Devices' ordering guide. It meets EU Directive 2011/65/EU and is lead-free with compliant finish and packaging.
Can the ADM1812-5ARTZ-REEL monitor voltages other than 5 V?
The ADM1812-5ARTZ-REEL is optimized for 5 V supply monitoring with a 4.62 V threshold. While it operates from 1.2 V to 5.5 V, its trip point is fixed and not adjustable; for 3.3 V or 2.5 V monitoring, Analog Devices recommends the ADM1817 or ADM1815 families instead.
ADM1812-5ARTZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ADM1812-5ARTZ-REEL FAQ
1.How can I place an order for ADM1812-5ARTZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1812-5ARTZ-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 ADM1812-5ARTZ-REEL reliable?
The price and inventory of ADM1812-5ARTZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1812-5ARTZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM1812-5ARTZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1812-5ARTZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1812-5ARTZ-REEL?
ADM1812-5ARTZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1812-5ARTZ-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 ADM1812-5ARTZ-REEL?
For technical support, including ADM1812-5ARTZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1812-5ARTZ-REEL requirements.
6.How does Aetrix verify that ADM1812-5ARTZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM1812-5ARTZ-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 ADM1812-5ARTZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM1812-5ARTZ-REEL?
All ADM1812-5ARTZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM1812-5ARTZ-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 ADM1812-5ARTZ-REEL part is unused and in its original packaging.
Return procedure for ADM1812-5ARTZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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