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Analog Devices Inc. ADM1815-10AKSZ-RL7
- Part No.:
- ADM1815-10AKSZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM1815-10AKSZ-RL7.pdf
- Description:
- ADM1815 - MICROPROCESSOR SUPERVI
- Quantity:
- Payment:
- Shipping:
Inventory:28,727
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Product details
Overview
ADM1815-10AKSZ-RL7 from Analog Devices is an active-low push-pull microprocessor reset circuit monitoring 3.3 V supply rails with a 2.88 V (typical) reset threshold, 150 ms reset timeout, and operation over −40°C to +105°C. It ensures safe system initialization in embedded controllers and industrial microprocessor systems by holding reset until power stabilizes.
For engineers reviewing the ADM1815-10AKSZ-RL7 datasheet, ADM1815-10AKSZ-RL7 pinout, ADM1815-10AKSZ-RL7 application, or ADM1815-10AKSZ-RL7 equivalent, key selection factors include trip point accuracy (±2.5% typical), ultra-low quiescent current (≤10 µA at 3.6 V), SC70-3 package footprint, and compatibility with standard microprocessor reset inputs without external components.
Technical Context
The ADM1815-10AKSZ-RL7 integrates a precision voltage reference, comparator, and 150 ms delay timer to generate a clean active-low reset pulse after VCC rises above 2.88 V (typ). Its push-pull output drives directly into microprocessor RESET pins with 350 µA source capability and 8 mA sink strength.
Designed for 3.3 V systems, it operates across 1.2 V to 5.5 V supply range and features ±2.5% trip point tolerance over temperature. The device uses internal trimming to maintain threshold stability across −40°C to +105°C without external calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.88 V typical (monitors 3.3 V supplies; min/max = 2.80 V/2.97 V) |
| Reset Timeout | 150 ms typical (ensures stable power-up before release; 100–250 ms range) |
| Supply Range | 1.2 V to 5.5 V (supports wide input margin; functional down to 1.2 V at full temp range) |
| Quiescent Current | 10 µA max at 3.6 V (enables low-power always-on monitoring in battery-backed systems) |
| Output Type | Active-low push-pull (direct interface to µP RESET pins; no pull-up required) |
| Temperature Range | −40°C to +105°C (qualified for industrial and automotive under-hood applications) |
| Propagation Delay | 100 µs max on power-up (fast response to undervoltage events) |
Pinout & Package
ADM1815-10AKSZ-RL7 is housed in a 3-lead SC70 (KS-3) package - 2.00 mm × 1.25 mm × 0.9 mm, RoHS-compliant, moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low push-pull reset output; sinks 8 mA when asserted, sources 350 µA when released |
| 2 | VCC | Supply voltage input and monitored rail; powers internal circuitry and reference |
| 3 | GND | Ground reference for all internal functions and output stage |
Key Features
| Feature | Design Value |
|---|---|
| Precision trip point | 2.88 V ±2.5% over −40°C to +105°C enables reliable 3.3 V supply supervision |
| Integrated 150 ms delay | Guarantees minimum reset assertion time for safe microprocessor startup sequence |
| Push-pull output | Eliminates need for external pull-up resistor; compatible with most µP RESET inputs |
| Ultra-low ICC | ≤10 µA at 3.6 V allows continuous monitoring in power-constrained edge devices |
| SC70-3 footprint | 1.25 mm × 2.00 mm area saves PCB space vs. SOT-23; compatible with high-density layouts |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power sequencing during cold crank or load dump events in 12 V automotive systems with 3.3 V logic rails. IC Role / Device Role / Timing Role: Monitors 3.3 V LDO output and asserts active-low reset for MCU until voltage exceeds 2.88 V and remains stable for 150 ms. Use Value: Prevents MCU lockup or corrupted firmware execution during transient brownouts common in vehicle electrical systems. |
Use Scenario: Supervising 3.3 V supply to CAN transceiver and microcontroller in body electronics modules. IC Role / Device Role / Timing Role: Generates guaranteed 150 ms reset pulse on power-up and detects undervoltage faults below 2.88 V. Use Value: Ensures deterministic boot state for safety-critical communication peripherals without software intervention. |
| Smart Energy Meter | Medical Diagnostic Handheld |
Use Scenario: Maintaining reliable reset behavior during battery-swapping or intermittent AC line drop in utility meters. IC Role / Device Role / Timing Role: Active-low push-pull output directly interfaces with metering SoC's RESET pin; operates down to 1.2 V supply. Use Value: Eliminates risk of partial initialization or register corruption during marginal supply conditions. |
Use Scenario: Power management in portable diagnostic tools requiring fail-safe boot after battery insertion or USB power connect. IC Role / Device Role / Timing Role: Provides precise 2.88 V threshold detection and 150 ms reset hold time for ARM-based application processor. Use Value: Meets IEC 62304 Class B software safety requirements via hardware-enforced reset timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | 2.8 V reset threshold (±2%), SOT-23-3, 140 ms timeout, 1.2–6 V supply | Lacks extended temperature rating (−40°C to +85°C only); lower sink current (20 mA vs. 8 mA) | Select for cost-sensitive commercial designs where extended temp is not required |
| TPS3808G18DBVR | 1.8 V threshold (not 2.88 V); adjustable via external resistor; 200 ms timeout; 1.2–6 V supply | Requires external resistor network; higher quiescent current (12 µA typical); different trip point | Choose only if programmable threshold is needed; not a direct replacement for fixed 2.88 V monitoring |
Compared with MAX809SEUR+T and TPS3808G18DBVR, the ADM1815-10AKSZ-RL7 delivers tighter trip point tolerance over industrial temperature range and eliminates external components while maintaining direct µP compatibility - critical for space-constrained, high-reliability applications.
Availability
ADM1815-10AKSZ-RL7 is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, smart energy meters, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM1815-10AKSZ-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 series was designed specifically for robust, low-cost power supply monitoring in microprocessor-based systems - emphasizing precision threshold accuracy, guaranteed reset timing, and minimal board space in SC70 and SOT-23 packages.
FAQ
What is the exact reset threshold voltage of the ADM1815-10AKSZ-RL7?
The ADM1815-10AKSZ-RL7 has a nominal reset threshold of 2.88 V (typical), with guaranteed limits of 2.80 V (min) and 2.97 V (max) across −40°C to +105°C. This value is factory-trimmed and specified in Table 1 of the Rev. F datasheet under "VCC TRIP POINT" for the -10 variant.
Does the ADM1815-10AKSZ-RL7 require an external pull-up resistor?
No. The ADM1815-10AKSZ-RL7 features an active-low push-pull output stage, meaning it actively drives RST low during reset and actively drives it high when released. Unlike open-drain variants (e.g., ADM1816), no external pull-up is needed for proper operation.
Can the ADM1815-10AKSZ-RL7 be used to monitor a 5 V supply?
No. The ADM1815-10AKSZ-RL7 is configured for 3.3 V supply monitoring with a 2.88 V threshold. For 5 V systems, Analog Devices specifies the ADM1810-10 or ADM1812-10 variants (4.35 V threshold). Using ADM1815-10AKSZ-RL7 on 5 V would result in permanent reset assertion.
What is the package type and dimensions of the ADM1815-10AKSZ-RL7?
The ADM1815-10AKSZ-RL7 uses the SC70-3 (KS-3) package: 2.00 mm × 1.25 mm × 0.9 mm body size, with 0.65 mm lead pitch. Pin 1 is RST, pin 2 is VCC, and pin 3 is GND - confirmed in Figure 3 and Table 3 of the Rev. F datasheet.
How does the reset timeout behave during power-down events?
On power-down (VCC falling), the ADM1815-10AKSZ-RL7 asserts reset within 10 µs of crossing the 2.88 V threshold. The reset remains asserted until VCC rises above threshold and sustains for 150 ms (typical), ensuring clean release only after full stabilization - critical for avoiding premature MCU wake-up.
ADM1815-10AKSZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.88V
- 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
ADM1815-10AKSZ-RL7 FAQ
1.How can I place an order for ADM1815-10AKSZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1815-10AKSZ-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 ADM1815-10AKSZ-RL7 reliable?
The price and inventory of ADM1815-10AKSZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1815-10AKSZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1815-10AKSZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1815-10AKSZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1815-10AKSZ-RL7?
ADM1815-10AKSZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1815-10AKSZ-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 ADM1815-10AKSZ-RL7?
For technical support, including ADM1815-10AKSZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1815-10AKSZ-RL7 requirements.
6.How does Aetrix verify that ADM1815-10AKSZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1815-10AKSZ-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 ADM1815-10AKSZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1815-10AKSZ-RL7?
All ADM1815-10AKSZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1815-10AKSZ-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 ADM1815-10AKSZ-RL7 part is unused and in its original packaging.
Return procedure for ADM1815-10AKSZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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