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Analog Devices Inc. ADM1815-5AKSZ-REEL
- Part No.:
- ADM1815-5AKSZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1815-5AKSZ-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,121
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Product details
Overview
ADM1815-5AKSZ-REEL from Analog Devices is an active-low push-pull microprocessor reset circuit designed to monitor 3.06 V supply rails in embedded systems. It features a precise 3.06 V (typical) reset threshold, 150 ms reset timeout, 9–16 µA supply current, and operates across −40°C to +105°C. It ensures safe system initialization in industrial controllers and automotive ECUs where reliable power-on reset is critical.
For engineers reviewing the ADM1815-5AKSZ-REEL datasheet, ADM1815-5AKSZ-REEL pinout, ADM1815-5AKSZ-REEL application, or ADM1815-5AKSZ-REEL equivalent, key selection considerations include its SC70-3 package, active-low push-pull output, guaranteed reset assertion during power-up/down transients, and compatibility with 3.3 V and 3 V logic interfaces without external components.
Technical Context
The ADM1815-5AKSZ-REEL integrates a precision voltage reference, comparator, and 150 ms delay timer to generate a clean, glitch-free reset signal. Its internal architecture guarantees reset assertion while VCC remains below 3.06 V (typ), and holds reset active for ≥100 ms after VCC rises above threshold.
This device belongs to the ADM181x family optimized for low-power, space-constrained applications. Unlike open-drain variants (e.g., ADM1816), it uses a push-pull output stage capable of sourcing 350 µA and sinking 8 mA-enabling direct connection to most microcontroller reset inputs without pull-up resistors or level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.06 V typical (2.98–3.15 V min/max); precisely monitors 3.3 V supply rails with margin for ripple and tolerance. |
| Reset Timeout | 150 ms typical (100–250 ms min/max); provides sufficient stabilization time before releasing reset to prevent premature MCU boot. |
| Supply Current | 9–16 µA at 5.5 V; ultra-low quiescent current enables use in battery-backed or always-on monitoring circuits. |
| Operating Temp | −40°C to +105°C; qualified for under-hood automotive and industrial environments requiring extended thermal range. |
| Output Type | Active-low push-pull; drives reset line directly to GND or VCC-no external pull-up needed, compatible with standard µP reset inputs. |
| Package | SC70-3 (KS-3); 2.0 mm × 1.25 mm footprint, 0.95 mm height-ideal for high-density PCB layouts. |
| Reset Propagation | 10 µs max falling edge detection; responds rapidly to brownout conditions without false triggering on fast transients. |
Pinout & Package
ADM1815-5AKSZ-REEL is housed in a 3-lead SC70 (KS-3) package with gull-wing leads, JEDEC-compliant outline, and RoHS-compliant finish. Pin 1 is RST (active-low reset output), Pin 2 is VCC (monitored supply input), and Pin 3 is GND (0 V reference).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST (Pin 1) | Active-low push-pull reset output | Drives low during fault or power-up; releases high after timeout-directly interfaces with µP /RESET pins requiring active-low assertion. |
| VCC (Pin 2) | Monitored supply voltage input | Accepts 1.2–5.5 V; internally scaled and compared against 3.06 V reference-no external resistor divider required. |
| GND (Pin 3) | Ground reference | Common 0 V return for all internal circuitry and output stage; must be connected to system ground plane for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 3.06 V typical with ±2% tolerance over temperature-ensures consistent trip point across full operating range without calibration. |
| Guaranteed reset timeout | 150 ms typical delay after VCC exceeds threshold-prevents erratic startup by enforcing minimum reset hold time. |
| Push-pull output stage | Sinks 8 mA and sources 350 µA-eliminates need for external pull-up resistor and supports direct drive of diverse µP reset inputs. |
| Low-power operation | 9 µA min supply current at 3.6 V-reduces system standby power and extends battery life in portable or remote devices. |
| Wide temperature range | Qualified from −40°C to +105°C-meets AEC-Q100 Grade 2 requirements for automotive body electronics and industrial control. |
Applications
| Industrial PLCs | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Power sequencing and fault recovery in programmable logic controllers exposed to wide ambient temperature swings and electrical noise. IC Role / Device Role / Timing Role: Monitors 3.3 V I/O supply and asserts /RESET until voltage stabilizes post-power-up or during brownout events. Use Value: Prevents firmware corruption and communication lockup by guaranteeing ≥150 ms reset hold time independent of MCU clock stability. |
Use Scenario: Reset supervision for microcontrollers managing door locks, lighting, and HVAC in vehicle cabin modules. IC Role / Device Role / Timing Role: Active-low reset generator tied to 3.06 V threshold-compatible with 3.3 V CAN/LIN transceivers and sensor interfaces. Use Value: Meets automotive cold-crank voltage drop requirements with fast 10 µs response to falling VCC and robust noise immunity. |
| Medical Diagnostic Equipment | Smart Energy Meters |
|
Use Scenario: Ensuring deterministic boot sequence in portable ultrasound or patient monitor units with dual-supply architectures. IC Role / Device Role / Timing Role: Supervises auxiliary 3.3 V rail powering ADCs and display controllers; resets system if supply dips below 3.06 V. Use Value: Eliminates need for discrete RC reset networks-reducing BOM count and improving long-term reliability over temperature and aging. |
Use Scenario: Reliable reset generation in utility-grade meters operating continuously in outdoor enclosures with wide thermal cycling. IC Role / Device Role / Timing Role: Monitors 3.3 V microcontroller core supply; asserts reset during grid voltage sags or capacitor discharge events. Use Value: Delivers 150 ms reset pulse even at −40°C, ensuring EEPROM write completion and state-machine recovery before reinitialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADM1815-5ARTZ-REEL | SOT-23-3 package (RT-3) instead of SC70-3; identical electrical specs and branding (M73). | Requires larger PCB footprint (2.9 mm × 1.3 mm vs. 2.0 mm × 1.25 mm); better thermal dissipation but less space-efficient. | Select when board layout allows SOT-23 or thermal performance outweighs size constraints. |
| MAX809SEUR+T | 3.08 V reset threshold (±2%), 140 ms timeout, SOT-23-3, 1.2–5.5 V supply range; Maxim Integrated part. | Same functional role but different timing tolerance and manufacturer qualification-requires validation for automotive/industrial use. | Choose only after cross-testing timing behavior and temperature drift against ADM1815-5AKSZ-REEL in target system. |
Compared with ADM1815-5ARTZ-REEL, the ADM1815-5AKSZ-REEL saves board area and suits ultra-compact designs; versus MAX809SEUR+T, it offers tighter threshold accuracy (±2% vs. ±2.5%) and longer guaranteed timeout (100–250 ms vs. 140 ms typ), enhancing robustness in noisy or thermally aggressive environments.
Availability
ADM1815-5AKSZ-REEL is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, and smart energy meters requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for ADM1815-5AKSZ-REEL 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 delivers cost-effective, space-saving reset supervisors targeting microprocessor-based systems needing guaranteed power-on reset, brownout protection, and minimal external components.
FAQ
What is the reset threshold voltage of the ADM1815-5AKSZ-REEL?
The ADM1815-5AKSZ-REEL has a nominal reset threshold of 3.06 V (typical), with a guaranteed range of 2.98 V (min) to 3.15 V (max) over −40°C to +105°C. This value is factory-trimmed and does not require external adjustment, making it ideal for monitoring 3.3 V supplies with adequate headroom.
Does the ADM1815-5AKSZ-REEL require an external pull-up resistor on the RST pin?
No. The ADM1815-5AKSZ-REEL features an active-low push-pull output stage that actively drives RST high or low-no external pull-up resistor is needed. This simplifies design, reduces BOM count, and ensures deterministic reset release timing without dependency on external component values.
Can the ADM1815-5AKSZ-REEL be used in automotive applications?
Yes. The ADM1815-5AKSZ-REEL is rated for −40°C to +105°C operation and is commonly deployed in automotive body control modules and infotainment subsystems. While not AEC-Q100 certified out-of-box, its temperature range, supply robustness, and reset timing meet baseline requirements for non-safety-critical automotive functions.
What is the package type and lead count of the ADM1815-5AKSZ-REEL?
The ADM1815-5AKSZ-REEL uses a 3-lead SC70 (KS-3) package-measuring 2.0 mm × 1.25 mm with 0.65 mm lead pitch. It is RoHS-compliant (denoted by "Z" suffix) and optimized for high-density PCB assembly using standard reflow profiles.
How does the reset timeout behavior work on the ADM1815-5AKSZ-REEL?
The ADM1815-5AKSZ-REEL asserts RST low while VCC is below 3.06 V and maintains RST low for ≥100 ms (typical 150 ms) after VCC rises above threshold. This fixed delay ensures power supply stabilization before releasing reset-critical for preventing corrupted MCU boot sequences in real-world power-up conditions.
ADM1815-5AKSZ-REEL 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:
- 3.06V
- 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
ADM1815-5AKSZ-REEL FAQ
1.How can I place an order for ADM1815-5AKSZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1815-5AKSZ-REEL 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 ADM1815-5AKSZ-REEL reliable?
The price and inventory of ADM1815-5AKSZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1815-5AKSZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM1815-5AKSZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1815-5AKSZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1815-5AKSZ-REEL?
ADM1815-5AKSZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1815-5AKSZ-REEL 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 ADM1815-5AKSZ-REEL?
For technical support, including ADM1815-5AKSZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1815-5AKSZ-REEL requirements.
6.How does Aetrix verify that ADM1815-5AKSZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM1815-5AKSZ-REEL 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 ADM1815-5AKSZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM1815-5AKSZ-REEL?
All ADM1815-5AKSZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM1815-5AKSZ-REEL, 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 ADM1815-5AKSZ-REEL part is unused and in its original packaging.
Return procedure for ADM1815-5AKSZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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