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Analog Devices Inc. ADM803LAKS-REEL
- Part No.:
- ADM803LAKS-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM803LAKS-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,136
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Product details
Overview
ADM803LAKS-REEL from Analog Devices is a microprocessor supervisory circuit with open-drain active-low RESET output, 4.63 V reset threshold, and operation down to 1.0 V VCC. It provides 240 ms minimum power-on reset timeout, consumes 17 μA typical supply current, and is qualified for −40°C to +125°C industrial/automotive environments. It monitors 5 V supply rails in embedded controllers and portable instrumentation.
For engineers reviewing the ADM803LAKS-REEL datasheet, ADM803LAKS-REEL pinout, ADM803LAKS-REEL application, or ADM803LAKS-REEL equivalent, key selection criteria include reset threshold accuracy (±2.5% over temperature), SC70-3 package compatibility, open-drain drive capability requiring external pull-up, and guaranteed reset assertion below 1 V VCC.
Technical Context
The ADM803LAKS-REEL integrates a precision voltage comparator with built-in glitch immunity and an internal 240 ms reset timer. Its reference circuit maintains stable threshold detection across temperature (30 ppm/°C drift) and supports brownout detection down to VCC = 1.0 V.
Unlike push-pull variants (ADM809/ADM810), the ADM803LAKS-REEL uses an open-drain RESET output requiring an external pull-up resistor, enabling wired-OR configurations and level translation across mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63 V ±2.5% over −40°C to +125°C - ensures reliable 5 V rail monitoring despite supply tolerance and thermal drift |
| Supply Current | 17 μA typical at VCC < 3.6 V - enables integration into battery-powered or ultra-low-power systems |
| VCC Operating Range | 1.0 V to 5.5 V - guarantees reset assertion during deep brownout and supports wide input voltage designs |
| Reset Timeout | 240 ms typical after VCC rise above threshold - holds microprocessor in reset until power stabilizes |
| Output Type | Open-drain active-low RESET - allows flexible pull-up voltage selection and multi-device reset bus sharing |
| Temperature Range | −40°C to +125°C - qualified for under-hood automotive, industrial control, and harsh-environment applications |
Pinout & Package
ADM803LAKS-REEL is housed in a 3-lead SC70 (KS-3) package, measuring 2.00 mm × 2.10 mm × 0.95 mm, with gull-wing leads and JEDEC-compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and timer - must be low-impedance connection to system ground plane |
| 2 | RESET | Open-drain active-low output - requires external pull-up resistor (typically 10–100 kΩ) to defined logic-high voltage |
| 3 | VCC | Monitored supply input - connects directly to the 5 V rail being supervised; powers internal circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 4.63 V with ±2.5% max deviation over full temperature range - eliminates need for external trimming in 5 V systems |
| Ultra-low quiescent current | 17 μA typical - reduces standby power in always-on monitoring applications without compromising response time |
| Brownout detection to 1 V | RESET remains asserted while VCC drops to 1.0 V - ensures controlled shutdown before logic corruption occurs |
| Glitch-immune comparator | Immune to transients ≤100 μs at 100 mV overdrive - prevents false resets from switching noise or ESD events |
| SC70-3 footprint | 2.0 mm × 2.1 mm body size - enables high-density PCB layouts in space-constrained portable and automotive modules |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors main 5 V supply in programmable logic controller CPU board during cold cranking and load dump events. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to ARM Cortex-M7 core until 5 V rail stabilizes post-power-up. Use Value: Prevents firmware execution on marginal voltage by guaranteeing 240 ms reset hold time and asserting reset down to 1.0 V VCC. | Use Scenario: Embedded in door module ECU to supervise 5 V LDO output powering CAN transceiver and microcontroller. IC Role / Device Role / Timing Role: Open-drain RESET output shared across multiple ICs via wired-OR bus, pulled up to 3.3 V for mixed-voltage interface. Use Value: Enables single-point reset coordination without level shifters; operates reliably across −40°C to +125°C ambient range. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Ensures safe startup of safety-critical MCU after battery insertion or AC/DC adapter connection. IC Role / Device Role / Timing Role: Voltage monitor triggering hardware reset before motor driver initialization and sensor calibration sequences. Use Value: Eliminates risk of erratic behavior during undervoltage conditions using precision 4.63 V threshold and 30 ppm/°C stability. | Use Scenario: Supervises isolated 5 V supply derived from mains transformer in revenue-grade metering unit. IC Role / Device Role / Timing Role: Provides fail-safe reset signal to metrology SoC during grid voltage sags and harmonic distortion events. Use Value: Glitch-immune comparator rejects fast transients common in noisy utility environments, preventing spurious reboots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809LUR+T | 4.63 V threshold, SOT-23-3 package, push-pull output, 20 μA supply current | Requires no external pull-up; incompatible with wired-OR reset buses | Select when board layout lacks space for pull-up resistor or when driving CMOS inputs directly |
| TPS3808G01DBVR | 4.63 V threshold, SOT-23-6 package, adjustable delay, 1.1 μA quiescent current | Larger footprint, different pinout, supports programmable timeout up to 200 s | Select when ultra-low power or configurable reset duration is required, not for direct SC70-3 replacement |
Compared with MAX809LUR+T and TPS3808G01DBVR, the ADM803LAKS-REEL uniquely combines SC70-3 size, open-drain flexibility, and guaranteed 1 V operation-making it optimal for space-constrained, multi-rail, or brownout-resilient designs where reset bus sharing is needed.
Availability
ADM803LAKS-REEL is available at Aetrix Electronics and suitable for industrial PLC 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 ADM803LAKS-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.
The ADM803LAKS-REEL belongs to Analog Devices' microprocessor supervisory product line, engineered for robust power-monitoring in mission-critical embedded systems where reliability under voltage stress and thermal extremes is mandatory.
FAQ
What is the reset threshold voltage of the ADM803LAKS-REEL?
The ADM803LAKS-REEL has a nominal reset threshold voltage of 4.63 V, specified with ±2.5% tolerance over the full −40°C to +125°C operating temperature range. This value is confirmed in Table 3 and the Ordering Guide of the ADM803/ADM809/ADM810 datasheet Rev. I, and applies specifically to the "L" variant denoted in the part number.
Does the ADM803LAKS-REEL require an external pull-up resistor?
Yes, the ADM803LAKS-REEL features an open-drain RESET output and requires an external pull-up resistor to a defined logic-high voltage (e.g., 3.3 V or 5 V). This is explicitly stated in the General Description and Pin Function Descriptions sections of the datasheet, distinguishing it from push-pull variants like ADM809/ADM810.
What is the minimum VCC voltage at which ADM803LAKS-REEL asserts RESET?
The ADM803LAKS-REEL asserts RESET down to VCC = 1.0 V, as specified in the "VCC OPERATING VOLTAGE RANGE" row of Table 1 (Rev. I datasheet). This ensures fail-safe reset behavior during severe brownout conditions before the monitored supply collapses completely.
Is the ADM803LAKS-REEL RoHS compliant?
Yes, the "Z" suffix in ADM803LAKS-REEL indicates RoHS compliance per the Ordering Guide footnote ("Z = RoHS Compliant Part"). The device meets EU Directive 2011/65/EU and is lead-free with matte tin lead finish.
What package type does ADM803LAKS-REEL use?
The ADM803LAKS-REEL uses a 3-lead SC70 package (JEDEC designation KS-3), with dimensions of 2.00 mm × 2.10 mm × 0.95 mm. This is confirmed in the Ordering Guide and Outline Dimensions section (Figure 15) of the Rev. I datasheet.
ADM803LAKS-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:
- 4.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
ADM803LAKS-REEL FAQ
1.How can I place an order for ADM803LAKS-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM803LAKS-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 ADM803LAKS-REEL reliable?
The price and inventory of ADM803LAKS-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM803LAKS-REEL is usually 5 days.
3.What payment methods are accepted for ADM803LAKS-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM803LAKS-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM803LAKS-REEL?
ADM803LAKS-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM803LAKS-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 ADM803LAKS-REEL?
For technical support, including ADM803LAKS-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM803LAKS-REEL requirements.
6.How does Aetrix verify that ADM803LAKS-REEL is sourced from the original manufacturer or authorized distributors?
All ADM803LAKS-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 ADM803LAKS-REEL meets industry standards.
7.What is the process for return or replacement of ADM803LAKS-REEL?
All ADM803LAKS-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM803LAKS-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 ADM803LAKS-REEL part is unused and in its original packaging.
Return procedure for ADM803LAKS-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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