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Analog Devices Inc. ADM1812-10ARTZ-RL7
- Part No.:
- ADM1812-10ARTZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM1812-10ARTZ-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,397
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Product details
Overview
ADM1812-10ARTZ-RL7 from Analog Devices is a microprocessor reset circuit with active-high push-pull output, 4.35 V typical reset threshold, 150 ms reset timeout, and operation over −40°C to +105°C. It monitors 5 V power supplies in embedded controllers and industrial microprocessor systems requiring reliable power-on initialization.
For engineers reviewing the ADM1812-10ARTZ-RL7 datasheet, ADM1812-10ARTZ-RL7 pinout, ADM1812-10ARTZ-RL7 application, or ADM1812-10ARTZ-RL7 equivalent, key selection criteria include reset polarity (active high), trip point tolerance (±0.14 V), supply current (≤16 µA at 5.5 V), and compatibility with standard microprocessor reset inputs without external components.
Technical Context
The ADM1812-10ARTZ-RL7 integrates a precision voltage reference, comparator, and 150 ms internal timer to ensure safe system startup after power stabilization. Its active-high push-pull output drives directly into microprocessor reset pins without pull-up resistors.
It operates across 1.2 V to 5.5 V supply range and features low quiescent current (9–16 µA), making it suitable for battery-backed or energy-constrained applications where deterministic reset timing and minimal leakage are critical.
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 supply brownout before system corruption. |
| Reset Timeout | 150 ms typical (100–250 ms); guarantees stable power rail before releasing reset to prevent premature CPU execution. |
| Supply Voltage Range | 1.2 V to 5.5 V; supports wide input monitoring and operation from partially discharged backup rails. |
| Quiescent Current | 16 µA max at 5.5 V; enables long-term monitoring in always-on subsystems with negligible battery drain. |
| Output Type | Active-high push-pull; eliminates need for external pull-up resistor and provides robust drive into MCU reset pin. |
| Operating Temp | −40°C to +105°C; qualified for industrial and automotive under-hood environments without derating. |
| Reset Propagation | 10 µs falling edge delay; ensures fast response to supply collapse for data integrity protection. |
Pinout & Package
ADM1812-10ARTZ-RL7 is packaged in a 3-lead SOT-23 (RT-3) surface-mount package with JEDEC TO-236-AB compliance, footprint dimensions 2.90 mm × 1.30 mm × 1.02 mm, and coplanarity ≤0.10 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-high reset output | Drives high during normal operation; asserts low only during power failure or brownout - compatible with most µP reset inputs requiring active-low assertion. |
| VCC | Supply voltage input | Monitored rail input; also powers internal circuitry - must be connected directly to the 5 V supply being supervised. |
| GND | Ground reference | 0 V return path for both monitoring circuit and output stage - requires low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 4.35 V reset threshold | Optimized for 5 V systems with ±3.2% tolerance; avoids false resets during nominal ripple or transient dips. |
| 150 ms reset timeout | Guarantees minimum hold time after VCC exceeds threshold - prevents race conditions during marginal power-up sequences. |
| Active-high push-pull output | Eliminates external pull-up resistor and reduces BOM count; sinks 8 mA and sources 350 µA for direct µP interface. |
| Low supply current | 9–16 µA over full temperature range - enables use in always-on supervisory circuits without compromising battery life. |
| Industrial temperature grade | −40°C to +105°C operation - validated for deployment in programmable logic controllers, motor drives, and factory automation hardware. |
Applications
| Programmable Logic Controllers (PLC) | Industrial Motor Drives |
|---|---|
Use Scenario: Supervises 5 V auxiliary supply powering FPGA configuration memory and I/O interface logic during cold start and brownout events. IC Role / Device Role / Timing Role: Reset supervisor ensuring deterministic FPGA reconfiguration only after stable 5 V rail is confirmed. Use Value: Prevents partial configuration or metastability by enforcing 150 ms minimum reset assertion after power recovery. | Use Scenario: Monitors main 5 V DC-DC output supplying gate driver ICs and communication interfaces in variable-frequency drives. IC Role / Device Role / Timing Role: Active-high reset generator that holds microcontroller in reset until regulated 5 V rail reaches 4.35 V and remains stable. Use Value: Eliminates spurious restarts caused by switching noise or load transients on the 5 V rail. |
| Medical Diagnostic Equipment | Automotive Body Control Modules |
Use Scenario: Ensures safe boot sequence for ARM-based imaging subsystems powered from isolated 5 V supplies in ultrasound or X-ray control units. IC Role / Device Role / Timing Role: Power-on reset coordinator with precise 4.35 V threshold and guaranteed 150 ms hold time. Use Value: Meets IEC 62304 Class C software safety requirements by preventing execution before power integrity is verified. | Use Scenario: Supervises 5 V supply feeding CAN transceiver and microcontroller in door module ECUs exposed to automotive load dump and cold-crank conditions. IC Role / Device Role / Timing Role: High-immunity reset monitor with −40°C to +105°C rating and fast 10 µs response to supply collapse. Use Value: Maintains functional safety integrity during ISO 16750-2 transient events without external filtering or hysteresis components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2T | 4.38 V reset threshold, 140 ms timeout, SOT-23-3, active-low open-drain output | Requires external pull-up; not drop-in due to polarity and output structure mismatch | Select only if system design accommodates active-low reset and external biasing. |
| TPS3808G12DBVR | 4.38 V threshold, adjustable timeout (1.25 ms to 10 s), SOT-23-6, active-high push-pull | Higher pin count, programmable delay, higher quiescent current (12 µA typical) | Choose when extended timeout flexibility or tighter threshold accuracy (±0.5%) is required. |
Compared with MAX809TRD2T and TPS3808G12DBVR, ADM1812-10ARTZ-RL7 offers fixed 150 ms timing, lower supply current, and guaranteed active-high push-pull drive - simplifying layout and reducing component count in cost-sensitive industrial designs.
Availability
ADM1812-10ARTZ-RL7 is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and automotive body control modules requiring stable component supply and RoHS-compliant packaging.
Supply support for ADM1812-10ARTZ-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, headquartered in Norwood, MA.
The ADM181x series was designed specifically for cost-sensitive, space-constrained microprocessor reset supervision in industrial and automotive applications - emphasizing low power, fixed timing, and robust voltage threshold accuracy.
FAQ
What is the reset threshold voltage of the ADM1812-10ARTZ-RL7?
The ADM1812-10ARTZ-RL7 has a typical reset threshold of 4.35 V, with a guaranteed range of 4.25 V (min) to 4.49 V (max) over −40°C to +105°C. This value is factory-trimmed and applies specifically to the ADM1812-10 variant, enabling precise supervision of nominal 5 V power rails without external calibration.
Does the ADM1812-10ARTZ-RL7 require an external pull-up resistor?
No, the ADM1812-10ARTZ-RL7 does not require an external pull-up resistor because it features an active-high push-pull output stage. The RST pin actively drives high during normal operation and pulls low during reset - eliminating external components and simplifying interface to microprocessor reset inputs.
What package type is used for the ADM1812-10ARTZ-RL7?
The ADM1812-10ARTZ-RL7 uses a 3-lead SOT-23 (RT-3) package per JEDEC TO-236-AB, with dimensions 2.90 mm × 1.30 mm × 1.02 mm and RoHS-compliant lead finish. The "Z" suffix in the part number confirms its lead-free and green material compliance.
Can the ADM1812-10ARTZ-RL7 be used for 3.3 V supply monitoring?
No, the ADM1812-10ARTZ-RL7 is not suitable for 3.3 V supply monitoring because its 4.35 V reset threshold is optimized for 5 V systems. For 3.3 V rails, Analog Devices specifies the ADM1817-10ARTZ-RL7 (2.88 V threshold) or ADM1815-10ARTZ-RL7 - both members of the same family but with different trip points.
What is the operating temperature range of the ADM1812-10ARTZ-RL7?
The ADM1812-10ARTZ-RL7 is rated for continuous operation from −40°C to +105°C, qualifying it for industrial and extended-temperature automotive applications. This range is validated per the device's absolute maximum ratings and specified performance tables in the Rev. F datasheet.
ADM1812-10ARTZ-RL7 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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.35V
- 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
ADM1812-10ARTZ-RL7 FAQ
1.How can I place an order for ADM1812-10ARTZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1812-10ARTZ-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 ADM1812-10ARTZ-RL7 reliable?
The price and inventory of ADM1812-10ARTZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1812-10ARTZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1812-10ARTZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1812-10ARTZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1812-10ARTZ-RL7?
ADM1812-10ARTZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1812-10ARTZ-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 ADM1812-10ARTZ-RL7?
For technical support, including ADM1812-10ARTZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1812-10ARTZ-RL7 requirements.
6.How does Aetrix verify that ADM1812-10ARTZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1812-10ARTZ-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 ADM1812-10ARTZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1812-10ARTZ-RL7?
All ADM1812-10ARTZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1812-10ARTZ-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 ADM1812-10ARTZ-RL7 part is unused and in its original packaging.
Return procedure for ADM1812-10ARTZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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