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Analog Devices Inc. ADM1816-R23ART-RL7
- Part No.:
- ADM1816-R23ART-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM1816-R23ART-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,415
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Product details
Overview
ADM1816-R23ART-RL7 from Analog Devices is a precision 3-lead SOT-23 open-drain microprocessor reset circuit with internal pull-up resistor, 2.31 V typical reset threshold, 150 ms reset timeout, and −40°C to +105°C operating range-designed for reliable power-on initialization of 2.5 V systems in industrial controllers and embedded instrumentation.
For engineers reviewing the ADM1816-R23ART-RL7 datasheet, ADM1816-R23ART-RL7 pinout, ADM1816-R23ART-RL7 application, or ADM1816-R23ART-RL7 equivalent, key selection criteria include trip point accuracy (±2.5% over temperature), ultra-low quiescent current (≤10 µA at 3.6 V), open-drain output compatibility with I²C-bus logic levels, and SC70/SOT-23 package interchangeability.
Technical Context
The ADM1816-R23ART-RL7 implements a bandgap-based voltage reference with comparator hysteresis and a fixed 150 ms power-up delay timer. Its internal 5.5 kΩ pull-up resistor enables direct connection to microcontroller reset inputs without external components.
This device belongs to the ADM181x family optimized for low-voltage supply monitoring (2.18 V–3.15 V trip points) and features guaranteed reset assertion during brownout conditions, fast 10 µs falling-edge response, and push-button reset support via RST-to-GND switch-though ADM1816 lacks manual reset functionality (only ADM1813/ADM1818 provide it).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31 V typical (2.25–2.37 V min/max); monitors 2.5 V supplies with 5% margin before undervoltage lockout. |
| Reset Timeout | 150 ms typical (100–250 ms); ensures stable power rail settling before releasing system reset. |
| Supply Range | 1.2 V to 5.5 V; supports operation down to 1.2 V while maintaining valid reset assertion. |
| Quiescent Current | ≤10 µA at 3.6 V; enables battery-backed or energy-sensitive applications. |
| Output Type | Open-drain with 5.5 kΩ internal pull-up; compatible with 1.8 V–5 V logic families and wired-OR bus configurations. |
| Temperature Range | −40°C to +105°C; qualified for industrial and automotive under-hood environments. |
| Falling Edge Response | 10 µs; detects rapid supply collapse to prevent processor corruption during power loss. |
Pinout & Package
ADM1816-R23ART-RL7 is housed in a 3-lead SOT-23 (RT-3) package with JEDEC TO-236-AB compliance, 2.90 mm × 1.30 mm footprint, and 1.12 mm height-optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-low open-drain reset output | Drives low when VCC < 2.31 V; floats high (pulled up internally) when VCC ≥ threshold; requires no external pull-up. |
| VCC | Supply voltage input | Monitored rail input; also powers internal reference and comparator; operates from 1.2 V to 5.5 V. |
| GND | Ground reference | 0 V return path for all internal circuitry and reset output sink current. |
Key Features
| Feature | Design Value |
|---|---|
| Internal pull-up resistor | 5.5 kΩ typical (3.5–7.5 kΩ); eliminates need for external biasing on reset line. |
| Reset timeout accuracy | ±33% over temperature; guarantees minimum 100 ms hold time across full −40°C to +105°C range. |
| Low-voltage operation | Valid reset assertion down to 1.2 V VCC; supports deep brownout detection in low-power systems. |
| ESD robustness | ≥2 kV HBM; protects against handling-induced transients during assembly and field operation. |
| Package compatibility | SOT-23 pinout matches industry-standard RT-3 footprint; enables drop-in replacement with similar reset ICs. |
Applications
| Industrial PLC Controller | Medical Diagnostic Instrument |
|---|---|
Use Scenario: Power sequencing in modular I/O backplanes where 2.5 V FPGA configuration rails must stabilize before firmware boot. IC Role / Device Role / Timing Role: Monitors 2.5 V supply and asserts active-low reset for 150 ms after VCC exceeds 2.31 V to synchronize FPGA configuration and ARM core startup. Use Value: Prevents metastability in JTAG chain and configuration memory by enforcing deterministic power-rail timing margin. | Use Scenario: Battery-powered portable ultrasound unit requiring fail-safe restart after Li-ion voltage sag below 2.5 V. IC Role / Device Role / Timing Role: Detects 2.5 V analog front-end supply collapse and holds microcontroller in reset until battery recovers and rail re-stabilizes. Use Value: Eliminates corrupted ADC sampling and false trigger events during transient brownouts. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: 2.5 V CAN transceiver power rail monitoring in 12 V vehicle electrical system with load-dump transients. IC Role / Device Role / Timing Role: Provides reset signal to MCU when 2.5 V LDO output drops due to input overvoltage clamp activation. Use Value: Ensures CAN node reinitialization only after transceiver supply fully recovers-preventing bus arbitration errors. | Use Scenario: Tamper-resistant meter with supercapacitor backup sustaining 2.5 V RTC and secure element during AC mains failure. IC Role / Device Role / Timing Role: Watches supercapacitor-discharged 2.5 V rail and triggers controlled shutdown sequence when voltage falls below 2.31 V. Use Value: Guarantees EEPROM write completion and cryptographic key sealing before power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809RTRG+T | 2.32 V threshold (±2%), 140 ms timeout, 3.6 µA IQ at 3.6 V, SOT-23 package | Lacks internal pull-up; requires external 47 kΩ resistor for open-drain interface | Select when lower quiescent current is critical and board space allows external component. |
| TPS3808G12DBVR | 1.22 V threshold (not 2.31 V), adjustable via external resistor divider, 250 ms timeout, 1.1 µA IQ | Programmable trip point enables multi-rail monitoring but adds design complexity and BOM cost | Choose for flexible threshold tuning across multiple supply voltages in shared PCB designs. |
Compared with MAX809RTRG+T and TPS3808G12DBVR, ADM1816-R23ART-RL7 delivers factory-trimmed 2.31 V accuracy with integrated pull-up-reducing component count and layout risk in fixed 2.5 V monitoring, while maintaining industrial temperature grade and fast fault response.
Availability
ADM1816-R23ART-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, medical diagnostic instruments, automotive body control modules, and smart energy meters requiring stable component supply with guaranteed long-term availability.
Supply support for ADM1816-R23ART-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 product line was engineered specifically for cost-sensitive, space-constrained microprocessor reset applications-emphasizing precision threshold stability, ultra-low power, and seamless integration into 2.5 V/3.3 V embedded systems.
FAQ
What is the exact reset threshold voltage of ADM1816-R23ART-RL7 and how does it vary with temperature?
The ADM1816-R23ART-RL7 has a nominal reset threshold of 2.31 V (typical), specified from 2.25 V (min) to 2.37 V (max) over the full −40°C to +105°C operating range. According to Figure 7 in the Rev. F datasheet, normalized threshold deviation remains within ±0.5% across temperature, ensuring consistent 2.5 V supply monitoring without recalibration.
Does ADM1816-R23ART-RL7 support manual reset via push-button, and if not, what is the functional alternative?
No, ADM1816-R23ART-RL7 does not support manual reset-the push-button feature is exclusive to ADM1813 and ADM1818 variants per the datasheet's "ADM1813 AND ADM1818" section. For manual reset capability, engineers should select ADM1818-R23AKSZ-RL7 (same 2.31 V threshold, SC70 package) or ADM1813-R23ARTZ-RL7 (SOT-23, 2.31 V).
What is the internal pull-up resistor value on the RST pin of ADM1816-R23ART-RL7, and can it drive standard CMOS inputs?
The ADM1816-R23ART-RL7 integrates a 5.5 kΩ (typical) internal pull-up resistor on the RST pin, ranging from 3.5 kΩ (min) to 7.5 kΩ (max). This provides sufficient current to reliably drive standard 3.3 V or 5 V CMOS reset inputs-no external pull-up is required, simplifying design and reducing BOM count.
How does the reset timeout behavior of ADM1816-R23ART-RL7 respond to repeated supply dips below threshold?
Each time VCC falls below the 2.31 V threshold, ADM1816-R23ART-RL7 reasserts reset and initiates a new 150 ms (typical) timeout period upon VCC recovery. The datasheet confirms this behavior in the "Power-Up Timing Diagram" (Figure 10) and "RESET ACTIVE TIME" specification (100–250 ms), ensuring robust immunity to ripple and transient sags.
Is ADM1816-R23ART-RL7 RoHS compliant and what is its moisture sensitivity level (MSL)?
Yes, ADM1816-R23ART-RL7 is RoHS compliant (denoted by the "Z" suffix in ordering codes like ADM1816-R23ARTZ-RL7). Per Analog Devices' packaging documentation, the SOT-23 variant carries MSL Level 1 rating-unlimited floor life at ≤30°C/85% RH, requiring no bake prior to reflow soldering.
ADM1816-R23ART-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:
- 2.31V
- 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:
- SOT-23-3
ADM1816-R23ART-RL7 FAQ
1.How can I place an order for ADM1816-R23ART-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1816-R23ART-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 ADM1816-R23ART-RL7 reliable?
The price and inventory of ADM1816-R23ART-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1816-R23ART-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1816-R23ART-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1816-R23ART-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1816-R23ART-RL7?
ADM1816-R23ART-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1816-R23ART-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 ADM1816-R23ART-RL7?
For technical support, including ADM1816-R23ART-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1816-R23ART-RL7 requirements.
6.How does Aetrix verify that ADM1816-R23ART-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1816-R23ART-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 ADM1816-R23ART-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1816-R23ART-RL7?
All ADM1816-R23ART-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1816-R23ART-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 ADM1816-R23ART-RL7 part is unused and in its original packaging.
Return procedure for ADM1816-R23ART-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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