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Analog Devices Inc. ADM811-3TARTZ-RL7
- Part No.:
- ADM811-3TARTZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
ADM811-3TARTZ-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,647
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Product details
Overview
ADM811-3TARTZ-RL7 from Analog Devices is a precision microprocessor supervisory circuit in 4-lead SOT-143 (RA-4) package, providing active-low reset assertion for 3.08 V supply monitoring with ±5% threshold accuracy over −40°C to +85°C, 140 ms minimum power-on reset timeout, and manual reset input with 10 µs minimum pulse width - used in automotive safety systems and industrial controllers requiring reliable brownout detection.
For engineers reviewing the ADM811-3TARTZ-RL7 datasheet, ADM811-3TARTZ-RL7 pinout, ADM811-3TARTZ-RL7 application, or ADM811-3TARTZ-RL7 equivalent, this page delivers verified functional role, exact reset threshold, temperature-stable timing behavior, manual reset debounce specs, and RoHS-compliant SOT-143 packaging details critical for embedded system reliability validation.
Technical Context
The ADM811-3TARTZ-RL7 implements a bandgap-based voltage reference with 30 ppm/°C temperature coefficient to maintain 3.08 V reset threshold stability across −40°C to +85°C. Its internal reset generator asserts RESET low during VCC < 3.00 V (min) and holds it active for ≥140 ms after VCC rises above threshold.
It features a debounced manual reset (MR) input tolerant of <100 ns glitches and responsive to >10 µs pulses, with logic-level thresholds scaling to 0.7 × VCC (rising) and 0.25 × VCC (falling), enabling robust interfacing in noisy environments without external filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08 V nominal, 3.00–3.15 V range over −40°C to +85°C - ensures deterministic reset before 3.3 V supply collapse. |
| Reset Timeout | 140–560 ms at VCC = VTH(MAX) - guarantees sufficient processor stabilization time after power-up or brownout recovery. |
| Supply Current | 5–10 µA typical at VCC < 3.6 V - enables ultra-low-power operation in battery-backed or portable instrumentation. |
| Reset Output Type | Active-low open-drain RESET - compatible with standard CMOS/TTL inputs and supports wired-OR configurations. |
| Manual Reset Pulse | ≥10 µs minimum width, 100 ns glitch immunity - eliminates switch bounce and EMI-induced false triggers. |
| Operating Temp | −40°C to +85°C - validated for under-hood automotive and industrial control cabinet deployment. |
| VCC Range | 1.0 V to 5.5 V - allows valid RESET assertion down to 1 V, ensuring safe shutdown during deep brownout. |
Pinout & Package
Package: 4-lead SOT-143 (JEDEC TO-253-AA, Analog Devices RA-4), 1.40 mm × 1.92 mm footprint, 0.90 mm height, lead-free and RoHS-compliant (Z suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | 0 V return path for all internal circuits and reset output sink current. |
| 2 RESET | Active-low reset output | Open-drain output held low during VCC undervoltage or MR assertion; requires external pull-up. |
| 3 MR | Manual reset input | Active-low debounced input; accepts >10 µs pulses, rejects <100 ns noise spikes. |
| 4 VCC | Monitored supply input | Input for 3.3 V nominal rail; internal reference tracks VCC to enable accurate 3.08 V threshold detection. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 3.08 V threshold | ±5% tolerance over full temperature range - eliminates need for external trimming in 3.3 V systems. |
| Low 5 µA quiescent current | Enables >10-year battery life in always-on monitoring nodes without compromising reset responsiveness. |
| 140 ms min. power-on reset | Guarantees microcontroller clock and memory initialization completes before release from reset. |
| Debounced MR input | Hardware-filtered manual reset avoids firmware-level debounce complexity and CPU resource usage. |
| Valid RESET down to 1 V VCC | Prevents metastability during power collapse by holding processor in known state until full shutdown. |
Applications
| Automotive Safety ECUs | Industrial PLC Controllers |
|---|---|
Use Scenario: Monitoring 3.3 V power rail in airbag control units where supply instability must trigger immediate system halt. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to freeze MCU execution during brownout. Use Value: Prevents partial execution of safety-critical routines by guaranteeing reset assertion before VCC drops below 3.00 V. |
Use Scenario: Ensuring deterministic startup sequence in programmable logic controller I/O modules after AC power restoration. IC Role / Device Role / Timing Role: Generating 140+ ms power-on reset pulse synchronized to 3.3 V rail stabilization. Use Value: Eliminates race conditions between FPGA configuration and peripheral initialization in modular control hardware. |
| Portable Medical Instruments | Smart Energy Meters |
Use Scenario: Maintaining data integrity during battery voltage sag in handheld glucose monitors with flash memory logging. IC Role / Device Role / Timing Role: Holding microcontroller in reset while VCC recovers from transient load-induced dip. Use Value: Avoids corrupted EEPROM writes by extending reset hold time beyond 140 ms when VCC = VTH(MAX). |
Use Scenario: Detecting grid voltage sags in DIN-rail mounted electricity meters with isolated 3.3 V auxiliary supply. IC Role / Device Role / Timing Role: Supervising isolated DC-DC output to initiate secure shutdown and tamper flagging. Use Value: Enables compliance with IEC 62053-21 voltage sag immunity requirements via precise 3.08 V threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811TUR-T | 3.08 V threshold, SOT-23-4 package, 20 µA max supply current, no MR input. | Lacks manual reset functionality; unsuitable where field-service reset is required. | Select only if board space constraints favor SOT-23 and manual reset is unnecessary. |
| TPS3808G30DBVR | 3.0 V threshold (±0.5%), 1.5 µA typical supply current, adjustable delay, SOT-23-5 package. | Higher accuracy but requires external capacitor for delay tuning; pin count differs. | Choose when sub-1% threshold tolerance and programmable timeout outweigh SOT-143 compatibility needs. |
Compared with MAX811TUR-T and TPS3808G30DBVR, the ADM811-3TARTZ-RL7 uniquely combines guaranteed 10 µs manual reset support, 30 ppm/°C threshold drift, and RoHS-compliant SOT-143 packaging - making it optimal for automotive and industrial designs requiring field-reset capability and thermal stability without layout redesign.
Availability
ADM811-3TARTZ-RL7 is available at Aetrix Electronics and suitable for automotive safety systems, industrial PLC controllers, portable medical instruments, and smart energy meters requiring stable component supply with full RoHS compliance and −40°C to +85°C operational assurance.
Supply support for ADM811-3TARTZ-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 ADM811/ADM812 family was designed specifically for reliable microprocessor supervision in harsh environments, emphasizing precision threshold stability, low power, and integrated manual reset - targeting safety-critical and long-lifecycle embedded systems.
FAQ
What is the exact reset threshold voltage of the ADM811-3TARTZ-RL7?
The ADM811-3TARTZ-RL7 has a nominal reset threshold of 3.08 V, with a guaranteed range of 3.00 V to 3.15 V over the full operating temperature range of −40°C to +85°C. This value is confirmed in Table 4 and the Ordering Guide of the Rev. H datasheet, and applies specifically to the "-3T" variant within the ADM811 family.
Does the ADM811-3TARTZ-RL7 support manual reset, and what are its timing requirements?
Yes, the ADM811-3TARTZ-RL7 includes a debounced manual reset (MR) input. It reliably responds to input pulses ≥10 µs wide and rejects transients ≤100 ns. The MR pin is active-low, with logic thresholds defined as rising above 0.7 × VCC and falling below 0.25 × VCC - specifications explicitly validated for the ADM811-3TARTZ-RL7 in the Pin Function Descriptions section.
What is the power-on reset timeout duration for the ADM811-3TARTZ-RL7?
The ADM811-3TARTZ-RL7 provides a minimum power-on reset timeout of 140 ms after VCC rises above the reset threshold, with a maximum of 560 ms depending on VCC level. This is distinct from the ADM811-3T variant (300–700 ms); the "-3TARTZ-RL7" part uses the standard 140–560 ms specification per Table 1 and Figure 6 of the datasheet.
Is the ADM811-3TARTZ-RL7 RoHS compliant and what does the 'Z' suffix indicate?
Yes, the 'Z' suffix in ADM811-3TARTZ-RL7 explicitly denotes RoHS compliance per Analog Devices' Ordering Guide. The device meets EU Directive 2011/65/EU requirements, contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE, and is marked with branding code M4E on the top surface per RA-4 package documentation.
What package type and dimensions does the ADM811-3TARTZ-RL7 use?
The ADM811-3TARTZ-RL7 uses the 4-lead SOT-143 package (JEDEC TO-253-AA), designated RA-4 by Analog Devices. Its footprint measures 1.40 mm × 1.92 mm, height is 0.90 mm, and lead pitch is 0.95 mm - dimensions fully specified in Figure 12 of the Rev. H datasheet and confirmed in the Ordering Guide.
ADM811-3TARTZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
ADM811-3TARTZ-RL7 FAQ
1.How can I place an order for ADM811-3TARTZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM811-3TARTZ-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 ADM811-3TARTZ-RL7 reliable?
The price and inventory of ADM811-3TARTZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM811-3TARTZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM811-3TARTZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM811-3TARTZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM811-3TARTZ-RL7?
ADM811-3TARTZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM811-3TARTZ-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 ADM811-3TARTZ-RL7?
For technical support, including ADM811-3TARTZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM811-3TARTZ-RL7 requirements.
6.How does Aetrix verify that ADM811-3TARTZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM811-3TARTZ-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 ADM811-3TARTZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM811-3TARTZ-RL7?
All ADM811-3TARTZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM811-3TARTZ-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 ADM811-3TARTZ-RL7 part is unused and in its original packaging.
Return procedure for ADM811-3TARTZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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