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Analog Devices Inc. ADM1815-R23AKS-RL7
- Part No.:
- ADM1815-R23AKS-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1815-R23AKS-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,328
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Product details
Overview
ADM1815-R23AKS-RL7 from Analog Devices is an active-low, open-drain microprocessor reset circuit with internal pull-up resistor, designed for monitoring 2.5 V supply rails. It features a 2.31 V (typical) reset threshold, 150 ms reset timeout, −40°C to +105°C operating temperature range, and SC70-3 package. It ensures safe system initialization in embedded controllers requiring reliable power-on reset.
For engineers reviewing the ADM1815-R23AKS-RL7 datasheet, ADM1815-R23AKS-RL7 pinout, ADM1815-R23AKS-RL7 application, or ADM1815-R23AKS-RL7 equivalent, key selection criteria include trip point accuracy (2.25–2.37 V), push-button reset compatibility, low quiescent current (≤10 µA at 3.6 V), and open-drain output with integrated 3.1–7.5 kΩ pull-up for direct interface to microcontroller reset inputs.
Technical Context
The ADM1815-R23AKS-RL7 implements a precision voltage comparator with hysteresis and a fixed 150 ms reset delay timer. Its internal reference and bias circuitry ensure stable trip-point performance across temperature (±0.5% typical drift from −40°C to +105°C).
This variant belongs to the ADM1815/ADM1816/ADM1817/ADM1818 family of open-drain reset monitors with internal pull-up resistors. Unlike push-pull variants (e.g., ADM1810/ADM1812), it supports manual reset via external push-button connected between RST and GND, with 1 µs detect-to-reset latency and 150 ms post-release assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31 V typical (2.25–2.37 V min/max); enables reliable monitoring of 2.5 V supplies with margin. |
| Reset Timeout | 150 ms typical (100–250 ms); guarantees sufficient power stabilization before releasing reset to microprocessor. |
| Supply Range | 1.2 V to 5.5 V; supports operation down to 1.2 V while monitoring higher rails via external divider if needed. |
| Quiescent Current | 4 µA typical at 3.6 V; minimizes standby power in battery-backed or energy-sensitive systems. |
| Output Type | Open-drain with internal 3.1–7.5 kΩ pull-up; eliminates need for external resistor and simplifies interface to diverse logic families. |
| Operating Temp | −40°C to +105°C; qualified for industrial and automotive under-hood applications. |
| Push-Button Support | Yes; detects >1 µs button press and asserts reset for 150 ms after release - enables field service reset without firmware intervention. |
Pinout & Package
ADM1815-R23AKS-RL7 is housed in a 3-lead SC70 (KS-3) package, measuring 2.00 mm × 1.25 mm × 0.95 mm, with gull-wing leads and JEDEC-compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-low open-drain reset output | Drives low during reset condition; floats high (pulled internally) otherwise - compatible with 1.8 V to 5 V logic inputs. |
| VCC | Supply voltage input | Monitored rail input; device draws current only from this pin - no separate bias supply required. |
| GND | Ground reference | 0 V reference for comparator, timer, and output stage; must be low-impedance connection to avoid false resets. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pull-up resistor | 3.1–7.5 kΩ internal; eliminates external component and PCB space while ensuring clean logic-high state. |
| Manual reset support | Detects push-button press ≥1 µs and holds RST low for 150 ms after release - enables hardware-level system recovery. |
| Precision voltage monitoring | 2.31 V trip point with ±0.06 V tolerance over full temp range; avoids premature or delayed reset in 2.5 V systems. |
| Low-power operation | 4 µA max supply current at 3.6 V; extends battery life in portable or always-on edge devices. |
| Wide supply range | Operates from 1.2 V to 5.5 V; allows use in mixed-voltage systems without level-shifting. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power-up sequence in a DIN-rail mounted programmable logic controller where 2.5 V FPGA core voltage must stabilize before configuration begins. IC Role / Device Role / Timing Role: Active-low reset supervisor asserting RST until VCC exceeds 2.31 V and remains stable for 150 ms. Use Value: Prevents FPGA configuration corruption by guaranteeing minimum power ramp time and eliminating brownout-induced lockup. | Use Scenario: Reset coordination in a vehicle door module powered from a 2.5 V LDO fed by 12 V battery via DC/DC converter. IC Role / Device Role / Timing Role: Monitors 2.5 V rail and generates synchronized reset pulse to MCU and CAN transceiver upon power application or undervoltage event. Use Value: Ensures deterministic startup timing across multiple ICs and supports fail-safe behavior during battery voltage sag. |
| Medical Sensor Node | Smart Energy Meter |
Use Scenario: Battery-powered wearable sensor node using ultra-low-power MCU that requires guaranteed reset on cold start or wake-from-sleep. IC Role / Device Role / Timing Role: Provides power-on reset and manual reset via tactile switch; operates continuously from coin-cell supply. Use Value: Enables field-recoverable operation without host intervention and reduces standby current to sub-µA effective levels. | Use Scenario: Revenue-grade electricity meter with isolated microcontroller and metrology ADC, both powered from 2.5 V reference-derived supply. IC Role / Device Role / Timing Role: Supervises 2.5 V metrology rail and asserts reset to MCU and ADC simultaneously during power transitions. Use Value: Guarantees atomic initialization of measurement chain and prevents invalid data capture during power instability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADM1815-R23ARTZ-RL7 | SOT-23-3 package instead of SC70-3; identical electrical specs and trip point (2.31 V). | Requires different PCB footprint and reflow profile; better thermal dissipation (θJA = 270°C/W vs. 146°C/W). | Select when board layout favors SOT-23 or thermal management is prioritized over size. |
| TPS3808G12DBVR | TI part with 1.2 V threshold (not 2.31 V); adjustable delay via capacitor; no internal pull-up - requires external resistor. | Not drop-in: different threshold, no push-button support, external BOM component needed. | Choose only if adjustable delay or different trip point is required; not a functional substitute without redesign. |
Compared with ADM1815-R23ARTZ-RL7, the SC70 package saves ~30% board area but has lower thermal resistance; versus TPS3808G12DBVR, ADM1815-R23AKS-RL7 offers integrated pull-up and push-button reset - reducing component count and enabling field serviceability without layout changes.
Availability
ADM1815-R23AKS-RL7 is available at Aetrix Electronics and suitable for industrial control, automotive electronics, and medical instrumentation requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for ADM1815-R23AKS-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 developed specifically for cost-sensitive, space-constrained microprocessor reset supervision in industrial and automotive environments - emphasizing precision trip points, integrated functionality, and extended temperature operation.
FAQ
What is the exact reset threshold voltage of the ADM1815-R23AKS-RL7?
The ADM1815-R23AKS-RL7 has a nominal reset threshold of 2.31 V, with guaranteed minimum and maximum values of 2.25 V and 2.37 V respectively, specified over the full −40°C to +105°C operating temperature range. This precise trip point is optimized for monitoring 2.5 V power rails with adequate noise margin and stability against supply ripple.
Does the ADM1815-R23AKS-RL7 support manual reset via push-button?
Yes, the ADM1815-R23AKS-RL7 supports manual reset: connecting a push-button between the RST pin and GND pulls the output low. When the button is released, the device holds RST low for 150 ms (typical) before releasing it. This feature is intrinsic to the ADM1815-R23AKS-RL7 and requires no external timing components.
What package type is used for the ADM1815-R23AKS-RL7?
The ADM1815-R23AKS-RL7 uses the SC70-3 (KS-3) package - a 3-lead, gull-wing surface-mount outline measuring 2.00 mm × 1.25 mm × 0.95 mm. It is RoHS-compliant (indicated by the "Z" suffix in ordering codes) and compatible with standard reflow soldering processes.
Can the ADM1815-R23AKS-RL7 monitor voltages other than 2.5 V?
The ADM1815-R23AKS-RL7 is factory-trimmed for a 2.31 V threshold and is intended primarily for 2.5 V rail supervision. To monitor higher voltages (e.g., 3.3 V or 5 V), an external resistor divider must be used at the VCC pin - but doing so degrades accuracy due to divider tolerance, temperature drift, and loading effects. For those rails, dedicated variants like ADM1815-10AKSZ-RL7 (2.88 V) or ADM1815-5AKSZ-RL7 (3.06 V) are recommended instead of modifying this part.
What is the supply current consumption of the ADM1815-R23AKS-RL7 at 3.6 V?
At VCC = 3.6 V and ambient temperature, the ADM1815-R23AKS-RL7 draws 4 µA typical supply current (with a maximum of 10 µA), as specified in the datasheet under "Current" in the SUPPLY section. This ultra-low quiescent current makes it suitable for always-on or battery-operated systems where standby power budget is critical.
ADM1815-R23AKS-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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:
- 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:
- SC-70-3
ADM1815-R23AKS-RL7 FAQ
1.How can I place an order for ADM1815-R23AKS-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1815-R23AKS-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 ADM1815-R23AKS-RL7 reliable?
The price and inventory of ADM1815-R23AKS-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1815-R23AKS-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1815-R23AKS-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1815-R23AKS-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1815-R23AKS-RL7?
ADM1815-R23AKS-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1815-R23AKS-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 ADM1815-R23AKS-RL7?
For technical support, including ADM1815-R23AKS-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1815-R23AKS-RL7 requirements.
6.How does Aetrix verify that ADM1815-R23AKS-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1815-R23AKS-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 ADM1815-R23AKS-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1815-R23AKS-RL7?
All ADM1815-R23AKS-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1815-R23AKS-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 ADM1815-R23AKS-RL7 part is unused and in its original packaging.
Return procedure for ADM1815-R23AKS-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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