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Analog Devices Inc. ADM1815-20ARTZ-RL7
- Part No.:
- ADM1815-20ARTZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM1815-20ARTZ-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,533
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Product details
Overview
ADM1815-20ARTZ-RL7 from Analog Devices is a precision active-low microprocessor reset circuit in SOT-23 package, monitoring 2.5 V supply rails with 2.55 V (typical) trip threshold, 150 ms reset timeout, and open-drain output with internal 5.5 kΩ pull-up resistor. It ensures safe power-on initialization in embedded controllers and industrial microprocessor systems.
For engineers reviewing the ADM1815-20ARTZ-RL7 datasheet, ADM1815-20ARTZ-RL7 pinout, ADM1815-20ARTZ-RL7 application, or ADM1815-20ARTZ-RL7 equivalent, key selection criteria include trip voltage tolerance (±2.5%), operating temperature range (−40°C to +105°C), reset delay stability over temperature, push-button reset compatibility, and SC70/SOT-23 package interchangeability.
Technical Context
The ADM1815-20ARTZ-RL7 implements a precision bandgap-based voltage reference with comparator and 150 ms monostable delay circuitry to generate a reliable reset pulse after power-up or brownout recovery. Its internal pull-up resistor eliminates external components for open-drain interfacing.
This variant belongs to the ADM1815 series-active-low, open-drain with internal pull-up-and shares functional block architecture with ADM1816/ADM1818 but differs from push-pull-output ADM1817 variants. Trip point is fixed at 2.55 V (typical), with ±2.5% tolerance across −40°C to +105°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.55 V typical, ±2.5% over full temperature range - ensures accurate 2.5 V rail monitoring without external calibration |
| Reset Timeout | 150 ms typical (100–250 ms min–max) - provides sufficient power stabilization window before system release |
| Supply Range | 1.2 V to 5.5 V - supports operation down to sub-2.5 V during brownout while maintaining reset assertion |
| Quiescent Current | 4 µA at 3.6 V - enables ultra-low-power operation in battery-backed or always-on systems |
| Output Type | Open-drain with 5.5 kΩ internal pull-up - simplifies interface to diverse logic families without external resistor |
| Operating Temp | −40°C to +105°C - qualified for industrial and automotive under-hood environments |
| Package | SOT-23 (RT-3) - 3-pin, surface-mount, JEDEC-compliant footprint with 2.9 mm × 1.3 mm body |
Pinout & Package
ADM1815-20ARTZ-RL7 is housed in a 3-lead SOT-23 (RT-3) package per JEDEC TO-236-AB, with 0.95 mm max height and coplanarity ≤0.10 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-low open-drain reset output | Drives low during reset; floats high (pulled up internally) when released - compatible with CMOS/TTL reset inputs |
| VCC | Supply voltage input | Monitored rail input; device operates and asserts reset when VCC falls below 2.55 V threshold |
| GND | Ground reference | 0 V return path for internal reference and output stage; must be low-impedance for stable threshold accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.55 V trip point | Enables precise monitoring of 2.5 V logic supplies without trimming or external resistors |
| 150 ms factory-trimmed reset timeout | Guarantees adequate power rail stabilization time before releasing microprocessor reset line |
| Internal 5.5 kΩ pull-up resistor | Eliminates need for external pull-up, reducing BOM count and PCB area in space-constrained designs |
| −40°C to +105°C operation | Supports deployment in extended-temperature industrial control, motor drives, and automotive ECUs |
| Low 4 µA quiescent current | Minimizes standby power draw in always-on supervisory circuits and battery-powered edge nodes |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power sequencing and fault recovery in programmable logic controller CPU modules with 2.5 V core supply. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low reset until 2.5 V rail stabilizes for ≥150 ms post-power-on. Use Value: Prevents firmware corruption during marginal power-up by enforcing minimum reset hold time aligned with processor spec. | Use Scenario: Reset coordination in automotive BCMs managing door locks, lighting, and sensors powered from 2.5 V domain. IC Role / Device Role / Timing Role: Monitors 2.5 V supply derived from DC-DC converter; asserts reset on undervoltage or cold-cranking dip. Use Value: Ensures deterministic boot state after battery voltage sag, eliminating erratic CAN node behavior during engine start. |
| Medical Diagnostic Handheld | Smart Energy Meter MCU |
Use Scenario: Supervision of 2.5 V analog front-end and digital subsystem in portable ultrasound or ECG devices. IC Role / Device Role / Timing Role: Active-low reset generator with internal pull-up, interfacing directly to ARM Cortex-M0+ reset pin. Use Value: Reduces component count vs. discrete reset IC + pull-up solution, improving reliability and easing IEC 60601-1 compliance testing. | Use Scenario: Power-on reset and brownout protection for metrology SoC in ANSI C12.20-certified electricity meters. IC Role / Device Role / Timing Role: Detects 2.5 V supply collapse during grid transients; holds reset for 150 ms to prevent flash write corruption. Use Value: Meets ANSI C12.22 data integrity requirements by guaranteeing minimum reset duration independent of external RC timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADM1815-20AKSZ-RL7 | Same 2.55 V trip point and open-drain output, but in SC70 (KS-3) package (1.8 mm × 1.2 mm) | Requires PCB layout change due to smaller pad pitch and different thermal profile; preferred for ultra-dense layouts | Select when board space is constrained and reflow profile supports SC70's lower thermal mass |
| TPS3808G12DBVR | 2.5 V threshold (±0.5% tighter), 200 ms fixed timeout, push-pull output - no internal pull-up required | Push-pull output demands verification of MCU reset pin voltage tolerance; lacks manual reset capability | Choose for higher accuracy and faster production ramp where external pull-up is acceptable and manual reset not needed |
Compared with ADM1815-20AKSZ-RL7, the SOT-23 version offers better thermal dissipation and legacy footprint compatibility; versus TPS3808G12DBVR, it trades threshold accuracy for integrated pull-up and broader temperature qualification (−40°C to +105°C vs. −40°C to +125°C).
Availability
ADM1815-20ARTZ-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical handheld diagnostics, and smart energy metering requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for ADM1815-20ARTZ-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 family was designed specifically for cost-sensitive, space-constrained microprocessor reset supervision in industrial, automotive, and computing applications - emphasizing low quiescent current, fixed precision thresholds, and simplified board-level integration.
FAQ
What is the exact reset threshold voltage of the ADM1815-20ARTZ-RL7?
The ADM1815-20ARTZ-RL7 has a nominal reset threshold of 2.55 V (typical), with guaranteed limits of 2.47 V (min) and 2.64 V (max) across −40°C to +105°C. This fixed threshold is factory-trimmed and does not require external resistor networks, making it ideal for monitoring standard 2.5 V power rails.
Does the ADM1815-20ARTZ-RL7 support manual reset via push-button?
No - the ADM1815-20ARTZ-RL7 does not support manual reset. Only ADM1813 and ADM1818 variants include push-button functionality. The ADM1815 series provides voltage monitoring and automatic reset only; its RST pin is an open-drain output with internal pull-up, not a bidirectional manual reset interface.
What package type is used by the ADM1815-20ARTZ-RL7?
The ADM1815-20ARTZ-RL7 uses the 3-lead SOT-23 (RT-3) package, compliant with JEDEC TO-236-AB. It measures 2.90 mm × 1.30 mm × 1.02 mm (L × W × H), with gull-wing leads and a coplanarity of ≤0.10 mm - fully compatible with standard SMT assembly processes and reflow profiles.
Can the ADM1815-20ARTZ-RL7 be used with a 3.3 V supply rail?
No - the ADM1815-20ARTZ-RL7 is specified for 2.5 V rail supervision (2.55 V trip point). For 3.3 V monitoring, use ADM1815-5ARTZ-RL7 (3.06 V trip) or ADM1815-10ARTZ-RL7 (2.88 V trip). Using ADM1815-20ARTZ-RL7 on 3.3 V would result in permanent reset assertion, as VCC remains above threshold.
Is the internal pull-up resistor value specified for the ADM1815-20ARTZ-RL7?
Yes - the ADM1815-20ARTZ-RL7 features an internal pull-up resistor of 5.5 kΩ (typical), with a guaranteed range of 3.5 kΩ (min) to 7.5 kΩ (max) across temperature and process variation. This allows direct connection to most microprocessor reset inputs without external components.
ADM1815-20ARTZ-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:
- 2.55V
- 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
ADM1815-20ARTZ-RL7 FAQ
1.How can I place an order for ADM1815-20ARTZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1815-20ARTZ-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 ADM1815-20ARTZ-RL7 reliable?
The price and inventory of ADM1815-20ARTZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1815-20ARTZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1815-20ARTZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1815-20ARTZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1815-20ARTZ-RL7?
ADM1815-20ARTZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1815-20ARTZ-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 ADM1815-20ARTZ-RL7?
For technical support, including ADM1815-20ARTZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1815-20ARTZ-RL7 requirements.
6.How does Aetrix verify that ADM1815-20ARTZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1815-20ARTZ-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 ADM1815-20ARTZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1815-20ARTZ-RL7?
All ADM1815-20ARTZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1815-20ARTZ-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 ADM1815-20ARTZ-RL7 part is unused and in its original packaging.
Return procedure for ADM1815-20ARTZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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