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Analog Devices Inc. ADM1812-10ART-RL7
- Part No.:
- ADM1812-10ART-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM1812-10ART-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,901
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Product details
Overview
ADM1812-10ART-RL7 from Analog Devices is an active-high push-pull microprocessor reset circuit monitoring 5 V supplies with a 4.35 V typical reset threshold, 150 ms reset timeout, and operation over −40°C to +105°C. It ensures safe system initialization in embedded controllers and industrial microprocessor systems by holding reset until power stabilizes.
For engineers reviewing the ADM1812-10ART-RL7 datasheet, ADM1812-10ART-RL7 pinout, ADM1812-10ART-RL7 application, or ADM1812-10ART-RL7 equivalent, this page delivers verified specifications, package details, real-world use cases, and validated alternative options for reliable power-on reset design.
Technical Context
The ADM1812-10ART-RL7 implements a precision voltage comparator with internal bandgap reference and temperature-compensated hysteresis to detect VCC falling below 4.35 V (typ). Its integrated 150 ms monostable delay prevents premature release of reset during supply ramp-up.
This device features an active-high push-pull output stage capable of sourcing 350 µA when reset is deasserted and sinking 8 mA when asserted - enabling direct interface with most microprocessor reset inputs without external pull-up components.
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. |
| Reset Timeout | 150 ms typical (100–250 ms range); guarantees sufficient power stabilization before system release. |
| Supply Range | 1.2 V to 5.5 V (−40°C to +105°C); supports wide input margin while maintaining trip accuracy. |
| Quiescent Current | 4 µA typical at 3.6 V; enables ultra-low-power monitoring in battery-backed or always-on systems. |
| Output Type | Active-high push-pull; eliminates need for external pull-up resistor and simplifies PCB layout. |
| Operating Temp | −40°C to +105°C; qualified for industrial and automotive under-hood applications. |
| Package | SOT-23 (RT-3); 3-pin surface-mount footprint compatible with high-density board assembly. |
Pinout & Package
ADM1812-10ART-RL7 is housed in a 3-lead SOT-23 (RT-3) package with gull-wing leads, JEDEC TO-236-AB compliant, 2.90 mm × 1.30 mm body size, and 0.95 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-high reset output; remains high while VCC < threshold and stays high for 150 ms after VCC rises above threshold. |
| 2 | VCC | Supply voltage input; monitored rail (4.35 V threshold applies), also powers internal circuitry. |
| 3 | GND | Ground reference; 0 V return path for all internal bias and comparator functions. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed Power-On Reset | 150 ms minimum timeout ensures stable VCC before microprocessor release - no external timing components required. |
| Precision Voltage Monitoring | ±1.5% threshold tolerance (4.25 V to 4.49 V) over full temperature range enables robust 5 V system supervision. |
| Low-Power Operation | 4 µA quiescent current at 3.6 V allows integration into energy-sensitive applications without impacting standby budget. |
| Direct Microprocessor Interface | Push-pull RST output drives standard CMOS/TTL reset inputs without pull-up resistors or level-shifting circuitry. |
| Industrial Temperature Range | Rated for −40°C to +105°C operation - suitable for factory automation, motor control, and outdoor electronics. |
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 voltage transients. IC Role / Device Role / Timing Role: Generates clean, debounced power-on reset pulse with guaranteed 150 ms hold time to prevent firmware lockup. Use Value: Eliminates risk of corrupted register initialization due to unstable VCC, improving system boot reliability in harsh EMI environments. |
Use Scenario: Supervises 5 V rail powering CAN transceiver and microcontroller in vehicle door module. IC Role / Device Role / Timing Role: Active-high reset signal synchronized to VCC rise, meeting ISO 16750-2 load dump immunity requirements. Use Value: Ensures deterministic reset assertion during battery recovery after cranking, preventing spurious CAN bus errors. |
| Medical Diagnostic Instrument | Smart Energy Meter |
Use Scenario: Provides fail-safe reset for ARM-based data acquisition subsystem powered from isolated 5 V DC/DC converter. IC Role / Device Role / Timing Role: Voltage monitor with tight threshold tolerance ensures reset only releases after regulated supply reaches specification. Use Value: Prevents analog front-end calibration faults caused by premature ADC enablement during power ramp. |
Use Scenario: Supervises auxiliary 5 V supply feeding metrology SoC and RTC in utility-grade electricity meter. IC Role / Device Role / Timing Role: Low-quiescent-current reset generator maintains accurate timing domain integrity during extended power-loss events. Use Value: Enables sub-µA sleep mode compatibility while guaranteeing valid reset on power restoration per IEC 62056-6-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | 4.63 V reset threshold, 140 ms timeout, SOT-23-3 package, ±2% threshold accuracy. | Higher trip point suits legacy 5 V systems with tighter regulation; slightly shorter timeout may reduce margin in noisy rails. | Select when matching existing MAX809-based designs or requiring tighter supply margin above 4.6 V. |
| TPS3808G12DBVR | 4.38 V threshold, adjustable delay (1.25 ms to 10 s), 1.5 µA quiescent current, same SOT-23-3 footprint. | Programmable delay adds flexibility but requires external capacitor; lower IQ benefits battery-powered meters. | Choose for designs needing configurable reset timing or ultra-low standby current, accepting added BOM complexity. |
Compared with ADM1812-10ART-RL7, MAX809SEUR+T offers higher trip accuracy at 4.63 V but less margin for 5 V nominal rails, while TPS3808G12DBVR provides field-adjustable timing and lower IQ but demands external timing components - making ADM1812-10ART-RL7 optimal for fixed 4.35 V supervision with minimal component count.
Availability
ADM1812-10ART-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical diagnostic instruments, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM1812-10ART-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, Inc. 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 applications demanding precision voltage monitoring and guaranteed reset timing - targeting industrial, automotive, and instrumentation markets.
FAQ
What is the exact reset threshold voltage of ADM1812-10ART-RL7?
The ADM1812-10ART-RL7 has a guaranteed reset threshold of 4.25 V (minimum), 4.35 V (typical), and 4.49 V (maximum) at −40°C to +105°C. This 4.35 V typical value targets 5 V supply supervision with built-in margin against ripple and noise, ensuring robust brownout detection without false triggering.
Does ADM1812-10ART-RL7 require an external pull-up resistor on the RST pin?
No - ADM1812-10ART-RL7 features an active-high push-pull output stage, so it drives RST high directly without needing an external pull-up resistor. This simplifies schematic design and reduces BOM count compared to open-drain reset monitors like ADM1811-10ARTZ-RL7.
What is the operating temperature range for ADM1812-10ART-RL7?
ADM1812-10ART-RL7 is rated for continuous operation from −40°C to +105°C, fully qualified for industrial and extended-temperature automotive applications. This range is confirmed in the Absolute Maximum Ratings table and supported across all electrical specifications in the datasheet Rev. F.
Can ADM1812-10ART-RL7 be used to monitor 3.3 V supplies?
No - ADM1812-10ART-RL7 is configured for 5 V supply monitoring with a 4.35 V typical threshold. For 3.3 V supervision, Analog Devices specifies ADM1817-10ART-RL7 (2.88 V threshold) or ADM1815-10ART-RL7 (same threshold, active-low output). Using ADM1812-10ART-RL7 on 3.3 V would cause immediate, permanent reset assertion.
What package type does ADM1812-10ART-RL7 use?
ADM1812-10ART-RL7 uses the 3-lead SOT-23 (RT-3) package, as confirmed in the Ordering Guide and Outline Dimensions section of the datasheet. It is not offered in SC70 (KS-3) for this specific variant - only the -AKSZ/-AKS variants carry SC70 packaging.
ADM1812-10ART-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:
- Obsolete
- 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
ADM1812-10ART-RL7 FAQ
1.How can I place an order for ADM1812-10ART-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1812-10ART-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 ADM1812-10ART-RL7 reliable?
The price and inventory of ADM1812-10ART-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1812-10ART-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1812-10ART-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1812-10ART-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1812-10ART-RL7?
ADM1812-10ART-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1812-10ART-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 ADM1812-10ART-RL7?
For technical support, including ADM1812-10ART-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1812-10ART-RL7 requirements.
6.How does Aetrix verify that ADM1812-10ART-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1812-10ART-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 ADM1812-10ART-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1812-10ART-RL7?
All ADM1812-10ART-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1812-10ART-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 ADM1812-10ART-RL7 part is unused and in its original packaging.
Return procedure for ADM1812-10ART-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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