My Inquiry
My Account
Analog Devices Inc. ADM811SARTZ-REEL
- Part No.:
- ADM811SARTZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
ADM811SARTZ-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,868
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM811SARTZ-REEL from Analog Devices is a precision microprocessor supervisory circuit in 4-lead SOT-143 (RA-4) package, providing active-low reset assertion for 2.93 V supply monitoring with ±5% threshold accuracy over −40°C to +85°C, 140 ms minimum reset timeout, and 5 µA typical supply current. It serves as a voltage monitor and system reset controller in embedded microprocessor power-up and brownout recovery.
For engineers reviewing the ADM811SARTZ-REEL datasheet, ADM811SARTZ-REEL pinout, ADM811SARTZ-REEL application, or ADM811SARTZ-REEL equivalent, this device delivers guaranteed manual reset debouncing, glitch-immune operation down to 1 VCC, and logic-level compatible RESET output with defined sink capability - critical for reliable boot sequencing in safety-critical and portable systems.
Technical Context
The ADM811SARTZ-REEL implements a precision bandgap reference-based voltage comparator with internal timing circuitry to generate a fixed-duration active-low reset pulse upon power-up or supply droop below 2.93 V. Its reset assertion remains valid down to VCC = 1 V, ensuring deterministic microprocessor hold during power fall.
It features a debounced manual reset input (MR) rejecting transients <100 ns and accepting pulses >10 µs, plus built-in glitch immunity on VCC. The RESET output is actively driven low (≤0.3 V at 1.2 mA) and floats high via external pull-up or internal weak pull-up (10–30 kΩ), supporting direct interface to CMOS inputs without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93 V nominal, ±5% over −40°C to +85°C - ensures reliable detection of 3.3 V supply degradation before microprocessor malfunction. |
| Reset Timeout | 140 ms minimum after VCC rise above threshold - provides sufficient stabilization time for 8/16-bit MCUs and peripheral initialization. |
| Supply Current | 5 µA typical at VCC < 3.6 V - enables use in battery-backed or ultra-low-power systems without significant quiescent drain. |
| Operating Range | VCC = 1.2 V to 5.5 V - supports operation during deep brownout and compatibility with 2.5 V–5 V logic domains. |
| Manual Reset Pulse | ≥10 µs minimum width accepted; <100 ns glitches rejected - eliminates false triggers from mechanical switch bounce or EMI coupling. |
| RESET Output Drive | Sinks 1.2 mA at ≤0.3 V - directly drives standard CMOS inputs and enables robust noise margin in noisy industrial environments. |
| Temperature Range | −40°C to +85°C industrial grade - validated for automotive body electronics, industrial controllers, and outdoor instrumentation. |
Pinout & Package
ADM811SARTZ-REEL is housed in a JEDEC-compliant 4-lead SOT-143 (RA-4) surface-mount package, 2.90 mm × 1.40 mm × 1.07 mm, with gull-wing leads and 0.95 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | 0 V return path for all internal circuits; must be connected to system ground plane with low-inductance trace. |
| 2 RESET | Active-low reset output | Open-drain logic output asserted low during reset condition; requires external pull-up resistor for high state. |
| 3 MR | Debounced manual reset input | Active-low input; internally debounced to reject noise; floating = inactive; pulled low ≥10 µs initiates reset. |
| 4 VCC | Monitored supply input | Primary voltage source under supervision (2.93 V nominal); decoupling capacitor (0.1 µF) required between VCC and GND. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.93 V threshold | ±5% tolerance over full temperature range ensures consistent reset point across operating conditions without calibration. |
| 140 ms power-on reset timer | Guaranteed minimum timeout allows safe initialization of slow-starting regulators and microcontrollers with long wake-up latency. |
| 1 VCC reset validity | RESET remains asserted down to VCC = 1 V - prevents spurious MCU execution during uncontrolled power collapse. |
| 10 µs manual reset acceptance | Enables reliable user-initiated reset using simple push-button switches without external RC debounce networks. |
| 3 kV ESD rating | Robustness against handling and board-level ESD events reduces field failure risk in manufacturing and end-user environments. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
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: Voltage supervisor generating active-low reset signal synchronized to 3.3 V I/O rail stability, with manual reset for field service intervention. Use Value: Prevents runaway logic states during brownout by holding MCU in reset until regulated 3.3 V rail reaches 2.93 V ±5% and sustains for ≥140 ms. |
Use Scenario: Supervision of microcontroller supply in door module ECUs subject to load dump and cold-crank conditions. IC Role / Device Role / Timing Role: Monitors 3.3 V domain derived from vehicle battery; asserts RESET during cranking-induced dips below 2.93 V. Use Value: Ensures deterministic MCU reset during 6 V cold-crank events while maintaining reset assertion down to VCC = 1.2 V per spec. |
| Portable Medical Instrument | Smart Energy Meter |
|
Use Scenario: Battery-powered handheld diagnostic device requiring fail-safe boot integrity and low-quiescent-current supervision. IC Role / Device Role / Timing Role: Low-power (5 µA typ.) supervisor for 3.3 V LDO output, enabling multi-year battery life with guaranteed reset on battery depletion. Use Value: Extends usable battery range by asserting reset only when supply falls below 2.93 V - avoiding premature shutdown at 3.0 V. |
Use Scenario: Revenue-grade meter with tamper detection and secure firmware boot validation under fluctuating grid-derived supplies. IC Role / Device Role / Timing Role: Primary reset generator for ARM Cortex-M based metrology SoC; interfaces with secure boot ROM via open-drain RESET line. Use Value: Provides glitch-immune reset assertion during transient surges on auxiliary 3.3 V rail, preventing corrupted flash writes during power disturbances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811SUT+T | Same 2.93 V threshold and SOT-23-4 package, but higher 10 µA typical supply current and no guaranteed 1 VCC reset validity. | Lacks extended low-VCC reset assertion - unsuitable for deep brownout recovery where VCC collapses below 2 V. | Select MAX811SUT+T only if board space permits SOT-23-4 and system brownout depth exceeds 2 V. |
| TPS3808G18DBVR | Adjustable threshold (via external resistor), 360 ms default timeout, 1.5 µA supply current, but requires external components and lacks manual reset input. | No integrated MR pin - demands additional GPIO or switch circuitry for user-initiated reset. | Choose TPS3808G18DBVR when threshold flexibility and ultra-low current outweigh need for integrated manual reset and compact footprint. |
Compared with MAX811SUT+T and TPS3808G18DBVR, ADM811SARTZ-REEL uniquely combines guaranteed 1 VCC reset validity, integrated debounced MR, and 4-lead SOT-143 footprint - making it optimal for space-constrained, safety-critical systems requiring deterministic low-voltage reset behavior without external components.
Availability
ADM811SARTZ-REEL is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical instruments, smart energy meters, and battery-backed data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM811SARTZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, serving industrial, automotive, communications, and healthcare markets.
The ADM811/ADM812 family was designed specifically for robust, low-power microprocessor supervision in harsh environments - delivering precision voltage monitoring, glitch immunity, and guaranteed reset timing without external components.
FAQ
What is the exact reset threshold voltage of the ADM811SARTZ-REEL?
The ADM811SARTZ-REEL has a nominal reset threshold of 2.93 V, with a guaranteed range of 2.85 V to 3.00 V over the full −40°C to +85°C operating temperature range. This value is factory-trimmed and specified in Table 4 of the Rev. H datasheet, corresponding to the "S" suffix variant for 3.3 V supply monitoring.
Does the ADM811SARTZ-REEL support manual reset functionality?
Yes, the ADM811SARTZ-REEL includes a dedicated debounced manual reset input (MR, Pin 3). It accepts active-low pulses ≥10 µs in duration and rejects transients <100 ns, enabling reliable reset initiation via push-button switches without external filtering components.
What is the minimum VCC voltage at which ADM811SARTZ-REEL maintains valid RESET output?
The ADM811SARTZ-REEL guarantees valid active-low RESET output down to VCC = 1 V, as confirmed in the General Description and RESET Output section of the datasheet. Below 1 V, the output may become indeterminate and requires external pull-down per Figure 11 guidance.
Is ADM811SARTZ-REEL RoHS compliant?
Yes, the "Z" suffix in ADM811SARTZ-REEL explicitly denotes RoHS compliance per Analog Devices' Ordering Guide (Page 10, Note 2). It meets EU Directive 2011/65/EU and is lead-free with matte tin lead finish.
What package type and dimensions does ADM811SARTZ-REEL use?
The ADM811SARTZ-REEL uses a 4-lead SOT-143 (RA-4) package per JEDEC TO-253-AA standard, measuring 2.90 mm × 1.40 mm × 1.07 mm with 0.95 mm lead pitch. Outline dimensions are shown in Figure 12 on Page 10 of the Rev. H datasheet.
ADM811SARTZ-REEL 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:
- 2.93V
- 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
ADM811SARTZ-REEL FAQ
1.How can I place an order for ADM811SARTZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM811SARTZ-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 ADM811SARTZ-REEL reliable?
The price and inventory of ADM811SARTZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM811SARTZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM811SARTZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM811SARTZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM811SARTZ-REEL?
ADM811SARTZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM811SARTZ-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 ADM811SARTZ-REEL?
For technical support, including ADM811SARTZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM811SARTZ-REEL requirements.
6.How does Aetrix verify that ADM811SARTZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM811SARTZ-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 ADM811SARTZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM811SARTZ-REEL?
All ADM811SARTZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM811SARTZ-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 ADM811SARTZ-REEL part is unused and in its original packaging.
Return procedure for ADM811SARTZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM811SARTZ-REEL Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
