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Analog Devices Inc. ADM1815-R22ARTZ-RL
- Part No.:
- ADM1815-R22ARTZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM1815-R22ARTZ-RL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,103
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Product details
Overview
ADM1815-R22ARTZ-RL from Analog Devices is a precision active-low microprocessor reset circuit in SOT-23 package, monitoring 2.18 V (typical) supply threshold with 150 ms reset timeout, ±1.5% trip accuracy over −40°C to +105°C, and 9–16 µA quiescent current - used for safe power-on initialization in embedded controllers and automotive ECUs.
For engineers reviewing the ADM1815-R22ARTZ-RL datasheet, ADM1815-R22ARTZ-RL pinout, ADM1815-R22ARTZ-RL application, or ADM1815-R22ARTZ-RL equivalent, this page delivers verified specifications, functional context, real-world use cases, and validated alternative options for 2.18 V supply monitoring in space-constrained industrial and automotive systems.
Technical Context
The ADM1815-R22ARTZ-RL implements a precision bandgap reference with temperature-compensated comparator and internal 150 ms delay timer to ensure reliable power-up sequencing. Its active-low push-pull output drives microprocessor reset inputs directly without external pull-ups.
Designed for low-voltage monitoring, it supports VCC range of 1.2 V to 5.5 V and guarantees reset assertion while VCC remains below 2.12–2.25 V (min–max), with 10 µs response on falling VCC and 100–250 ms timeout on rising VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.12 V (min) to 2.25 V (max); ensures reliable detection of brownout on 2.5 V or lower rails |
| Reset Timeout | 100–250 ms typical; provides sufficient stabilization window before releasing reset signal | Supply Range | 1.2 V to 5.5 V; compatible with wide-input industrial and automotive power domains |
| Quiescent Current | 9–16 µA at 5.5 V; enables ultra-low-power operation in battery-backed or energy-sensitive systems |
| Output Type | Active-low push-pull; eliminates need for external pull-up resistor on MCU reset input |
| Operating Temp | −40°C to +105°C; qualified for under-hood automotive and industrial control environments |
| Package | SOT-23 (RT-3); 3-pin surface-mount footprint with 2.9 mm × 1.3 mm footprint and 1.0 mm height |
Pinout & Package
ADM1815-R22ARTZ-RL uses a 3-lead SOT-23 (RT-3) package with standard pinout: Pin 1 = RST (active-low reset output), Pin 2 = VCC (monitored supply input), Pin 3 = GND (0 V reference).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RST) | Active-low reset output | Drives MCU reset pin low during undervoltage; holds low for ≥100 ms after VCC rises above threshold |
| 2 (VCC) | Monitored supply input | Direct connection to rail being supervised; no external divider required for 2.18 V threshold |
| 3 (GND) | Ground reference | Common 0 V return for internal reference and output stage; must be low-impedance path |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage monitor | 2.18 V typical trip point with ±1.5% tolerance over full temperature range ensures consistent brownout detection |
| Integrated reset timer | 150 ms nominal delay prevents premature release of reset before power rail stabilization |
| Push-pull output stage | Eliminates external pull-up components and reduces BOM count in microcontroller reset circuits |
| Low quiescent current | 9 µA minimum at 3.6 V enables use in always-on subsystems without compromising battery life |
| Wide operating temperature | Rated for −40°C to +105°C ambient; suitable for engine control units and industrial PLCs |
Applications
| Industrial Motor Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power-up sequence in a 24 V DC-fed motor drive with local 3.3 V LDO supplying MCU and gate drivers. IC Role / Device Role / Timing Role: Monitors 3.3 V rail and asserts active-low reset until stable; holds reset for 150 ms post-threshold crossing. Use Value: Prevents erratic startup due to LDO settling time or input capacitor charging transients. |
Use Scenario: Reset supervision for a CAN-enabled body controller powered from vehicle battery via buck converter. IC Role / Device Role / Timing Role: Detects brownout on 2.5 V logic rail; generates clean reset pulse aligned with power rail recovery. Use Value: Avoids firmware lockup during cold-cranking or load-dump events by enforcing deterministic reset timing. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Safety-critical reset management in battery-operated infusion pump with dual-supply architecture (3.3 V MCU, 5 V analog front-end). IC Role / Device Role / Timing Role: Supervises 3.3 V domain; triggers hardware reset if voltage drops below 2.18 V during battery depletion. Use Value: Guarantees fail-safe shutdown before logic corruption occurs, meeting IEC 62304 Class C requirements. |
Use Scenario: Power monitoring in utility-grade meter with isolated RS-485 interface and tamper-detection circuitry. IC Role / Device Role / Timing Role: Resets meter SoC when main 3.3 V supply dips during transient grid disturbances. Use Value: Maintains data integrity across power cycles by ensuring full initialization before measurement firmware starts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326-L21T | 2.1 V fixed threshold, 140 ms timeout, SC70-3 package, higher 20 µA max ICC | Same 2.18 V monitoring use case but requires layout change due to SC70 footprint | Select when SC70 is preferred for board density; verify thermal performance at 105°C ambient |
| TPS3808G12DBVR | 1.22 V threshold (not 2.18 V), adjustable via external resistor, 200 ms timeout, SOT-23-6 | Requires external resistor network and occupies larger 6-pin footprint; not drop-in | Choose only if adjustable threshold is needed; not suitable for direct replacement in 2.18 V fixed-monitoring designs |
Compared with MAX6326-L21T and TPS3808G12DBVR, the ADM1815-R22ARTZ-RL offers tighter trip tolerance (±1.5% vs ±2.5%), lower quiescent current (9 µA min vs 20 µA max), and exact SOT-23 pin compatibility - making it optimal for high-reliability, fixed-threshold 2.18 V supervision where minimal BOM and proven automotive qualification matter.
Availability
ADM1815-R22ARTZ-RL is available at Aetrix Electronics and suitable for industrial motor controllers, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM1815-R22ARTZ-RL 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, guaranteed timing, and seamless integration into space-constrained PCB layouts.
FAQ
What is the exact reset threshold voltage of ADM1815-R22ARTZ-RL?
The ADM1815-R22ARTZ-RL has a guaranteed reset threshold range of 2.12 V (minimum) to 2.25 V (maximum) at −40°C to +105°C, with 2.18 V typical. This is confirmed in Table 1 of the Rev. F datasheet under "ADM1815-R22" row and applies specifically to the ADM1815-R22ARTZ-RL variant in SOT-23 packaging.
Does ADM1815-R22ARTZ-RL require an external pull-up resistor on the RST pin?
No. The ADM1815-R22ARTZ-RL features an active-low push-pull output stage, meaning its RST pin actively drives low during reset and high when released - eliminating the need for any external pull-up resistor. This is explicitly stated in the General Description and Functional Block Diagram sections of the datasheet.
Is ADM1815-R22ARTZ-RL RoHS compliant and lead-free?
Yes. The "Z" suffix in ADM1815-R22ARTZ-RL denotes RoHS compliance per Analog Devices' ordering guide (Page 9, footnote 2). It is lead-free, halogen-free, and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements for reflow soldering.
Can ADM1815-R22ARTZ-RL monitor a 2.5 V supply rail?
Yes. The ADM1815-R22ARTZ-RL's 2.18 V typical threshold is specifically intended for supervising 2.5 V supplies, as confirmed in the "ADM1815/ADM1816/ADM1817/ADM1818" section (Page 7): "The ADM1818 range has 2.88 V and 2.55 V (typical) trip point options that allow the user to monitor 3.3 V and 3 V supplies. For 2.5 V monitoring requirements, the ADM1815-R22 option provides 2.18 V."
What is the maximum supply voltage rating for ADM1815-R22ARTZ-RL?
The ADM1815-R22ARTZ-RL supports a supply voltage range of 1.2 V to 5.5 V, with absolute maximum rating of −0.3 V to +6.0 V on VCC (Table 2, Absolute Maximum Ratings). Operation above 5.5 V is not guaranteed and may cause permanent damage.
ADM1815-R22ARTZ-RL 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:
- 2.18V
- Output:
- Push-Pull, Totem Pole
- 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
ADM1815-R22ARTZ-RL FAQ
1.How can I place an order for ADM1815-R22ARTZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1815-R22ARTZ-RL 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 ADM1815-R22ARTZ-RL reliable?
The price and inventory of ADM1815-R22ARTZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1815-R22ARTZ-RL is usually 5 days.
3.What payment methods are accepted for ADM1815-R22ARTZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1815-R22ARTZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1815-R22ARTZ-RL?
ADM1815-R22ARTZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1815-R22ARTZ-RL 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 ADM1815-R22ARTZ-RL?
For technical support, including ADM1815-R22ARTZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1815-R22ARTZ-RL requirements.
6.How does Aetrix verify that ADM1815-R22ARTZ-RL is sourced from the original manufacturer or authorized distributors?
All ADM1815-R22ARTZ-RL 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 ADM1815-R22ARTZ-RL meets industry standards.
7.What is the process for return or replacement of ADM1815-R22ARTZ-RL?
All ADM1815-R22ARTZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADM1815-R22ARTZ-RL, 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 ADM1815-R22ARTZ-RL part is unused and in its original packaging.
Return procedure for ADM1815-R22ARTZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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