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Analog Devices Inc. ADM6823VYRJZ-RL7
- Part No.:
- ADM6823VYRJZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ADM6823VYRJZ-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,455
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Product details
Overview
ADM6823VYRJZ-RL7 from Analog Devices is a low-voltage supervisory circuit with watchdog timer and manual reset, designed for microprocessor supply monitoring in portable and industrial systems. It features a 1.58 V reset threshold, 140 ms minimum reset timeout, 1.6 sec typical watchdog timeout, push-pull active-low RESET output, and operates down to VCC = 1 V with only 7 µA quiescent current.
For engineers reviewing the ADM6823VYRJZ-RL7 datasheet, ADM6823VYRJZ-RL7 pinout, ADM6823VYRJZ-RL7 application, or ADM6823VYRJZ-RL7 equivalent, this device supports brownout detection, code-execution integrity monitoring via WDI strobing, and external push-button reset assertion - critical for reliable embedded system startup and runtime supervision.
Technical Context
The ADM6823VYRJZ-RL7 integrates a precision voltage reference, reset generator, watchdog detector with debounce, and push-pull output stage. Its reset threshold is factory-trimmed to 1.58 V ±3%, with 60 ppm/°C temperature coefficient and 2×VTH hysteresis for noise immunity.
Watchdog operation requires logic transitions on WDI every 1.12–2.40 sec; MR input includes 50 kΩ internal pull-up and 100 ns glitch rejection. Reset remains asserted for ≥140 ms after VCC rises above threshold, MR release, or watchdog timeout - ensuring stable processor initialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.58 V (factory-trimmed, ±3% tolerance) - sets precise undervoltage detection point for 1.6–1.8 V core rails. |
| Reset Timeout | 140 ms (min) - guarantees sufficient hold time for microprocessor initialization after power stabilization. |
| Watchdog Timeout | 1.6 sec (typical), 1.12–2.40 sec (range) - enables robust software loop supervision without false triggers. |
| Supply Current | 7 µA (typical at VCC = 3.6 V) - enables battery-powered operation for >10 years in always-on monitoring applications. |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive, industrial control, and harsh-environment embedded use. |
| Output Type | Push-pull active-low RESET - drives logic directly without external pull-up; valid down to VCC = 1 V. |
| MR Input | Active-low with 50 kΩ internal pull-up - supports momentary switch interface with no external components. |
Pinout & Package
ADM6823VYRJZ-RL7 is housed in a RoHS-compliant, lead-free 5-lead SOT-23 package (JEDEC MO-178-AA, RJ-5 footprint), measuring 2.90 mm × 1.60 mm × 1.15 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull output | Asserts logic-low reset signal during undervoltage, MR activation, or watchdog timeout; sinks up to 3.2 mA at VCC ≥ 4.25 V. |
| 2 - GND | Ground reference | Common return path for internal voltage reference, reset generator, and watchdog circuitry. |
| 3 - MR | Manual reset input | Active-low input with internal 50 kΩ pull-up; accepts ≥1 µs pulse; rejects <100 ns glitches. |
| 4 - VCC | Monitored supply input | Primary power rail (1.53–2.0 V range for V-suffix parts); powers internal circuitry and defines reset threshold scaling. |
| 5 - WDI | Watchdog input | Edge-sensitive input requiring logic transition every ~1.6 sec; cleared by any low↔high or high↔low edge ≥50 ns wide. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 1.58 V threshold | Factory-trimmed for accurate monitoring of 1.6 V logic supplies - eliminates need for external resistor divider calibration. |
| Guaranteed reset validity to VCC = 1 V | Ensures deterministic reset behavior during deep brownout - critical for fail-safe shutdown in low-power states. |
| Integrated MR pull-up and debounce | Reduces BOM count by eliminating external pull-up resistor and RC filter - simplifies PCB layout and improves reliability. |
| Watchdog glitch immunity | Rejects spurious WDI transitions caused by EMI or software noise - prevents unintended resets during transient interference. |
| Low-tempco voltage reference | 60 ppm/°C drift ensures stable reset point across −40°C to +125°C - avoids false resets in thermal cycling environments. |
Applications
| Industrial PLC Controller | Medical Wearable Sensor Hub |
|---|---|
Use Scenario: Power-up sequencing and runtime fault recovery in programmable logic controllers operating in factory-floor environments with fluctuating 1.8 V I/O rails. IC Role / Device Role / Timing Role: Supervises 1.8 V supply rail, asserts RESET until stable, monitors firmware execution via WDI, and accepts operator-initiated reset via front-panel button. Use Value: Prevents corrupted state machine initialization and recovers from infinite loops without field service - reducing unplanned downtime. | Use Scenario: Battery-powered biosensor node with ultra-low-power MCU that must survive voltage sag during RF transmission bursts. IC Role / Device Role / Timing Role: Monitors 1.6 V core supply, holds MCU in reset during brownout, detects firmware hang via WDI strobe, and enables user-triggered recalibration reset. Use Value: Extends battery life via 7 µA quiescent current while guaranteeing safe restart after supply transients - meeting ISO 13485 reliability requirements. |
| Automotive Body Control Module | Smart Energy Meter MCU |
Use Scenario: Supervision of 1.6 V microcontroller domain in body electronics exposed to load-dump and cold-crank conditions. IC Role / Device Role / Timing Role: Detects undervoltage on 1.6 V rail, provides 140 ms reset hold time post-brownout, and validates code execution integrity using WDI polling. Use Value: Meets AEC-Q100 Grade 1 (−40°C to +125°C) requirements and prevents latch-up during 12 V system transients. | Use Scenario: Tamper-resistant electricity meter with secure bootloader requiring guaranteed reset assertion during power interruption. IC Role / Device Role / Timing Role: Monitors 1.8 V secure element supply, asserts active-low RESET to halt cryptographic operations during undervoltage, and supports manual reset for firmware update recovery. Use Value: Ensures cryptographic key erasure and state rollback on power loss - satisfying IEC 62056-21 security compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UT29D3+ | 2.93 V fixed threshold; no manual reset input; open-drain RESET output. | Lacks MR and WDI - suitable only for basic power-on reset, not runtime supervision. | Select when only undervoltage detection is needed and board space allows external pull-up. |
| TPS3808G15DBVR | 1.5 V threshold; adjustable watchdog timeout (via external capacitor); push-pull RESET. | Requires external timing capacitor; higher 12 µA quiescent current; no integrated MR pull-up. | Choose when fine-grained watchdog timing control is required and additional BOM cost is acceptable. |
Compared with MAX6326UT29D3+ and TPS3808G15DBVR, the ADM6823VYRJZ-RL7 delivers tighter 1.58 V threshold accuracy, integrated MR pull-up and debounce, and lower 7 µA supply current - making it optimal for compact, battery-sensitive designs requiring full-feature supervision.
Availability
ADM6823VYRJZ-RL7 is available at Aetrix Electronics and suitable for industrial control, medical wearables, automotive body electronics, and smart metering applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM6823VYRJZ-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 ADM6823 family was engineered specifically for microprocessor-based systems needing simultaneous power supply monitoring, watchdog-based code integrity verification, and manual reset capability - all in a minimal 5-lead SOT-23 footprint.
FAQ
What is the exact reset threshold voltage of the ADM6823VYRJZ-RL7?
The ADM6823VYRJZ-RL7 has a factory-trimmed reset threshold of 1.58 V, with a guaranteed tolerance of ±3% (1.52 V to 1.62 V) over the full −40°C to +125°C temperature range. This value is specified in Table 2 of the Rev. B datasheet under the "ADM682xV" row and is optimized for monitoring 1.6 V logic supplies.
Does the ADM6823VYRJZ-RL7 support manual reset functionality?
Yes, the ADM6823VYRJZ-RL7 includes a dedicated active-low manual reset input (MR, Pin 3) with an internal 50 kΩ pull-up resistor. Driving MR low for ≥1 µs asserts RESET; the device also provides built-in debounce and 100 ns glitch rejection, enabling direct connection to a push-button switch without external components.
What is the watchdog timeout behavior of the ADM6823VYRJZ-RL7?
When enabled, the ADM6823VYRJZ-RL7 watchdog timer asserts RESET if no logic transition occurs on the WDI pin (Pin 5) within 1.12–2.40 sec. The typical timeout is 1.6 sec. Transitions can be low-to-high or high-to-low, and pulses as short as 50 ns clear the timer - supporting efficient firmware strobing.
Can the ADM6823VYRJZ-RL7 operate reliably below 1.6 V supply voltage?
Yes, the ADM6823VYRJZ-RL7 is fully specified for VCC = 1.53 V to 2.0 V (per Table 2), and its RESET output remains valid down to VCC = 1 V. This ensures deterministic reset assertion even during severe brownout conditions common in battery-powered systems.
Is the ADM6823VYRJZ-RL7 RoHS compliant and lead-free?
Yes, the "Z" suffix in ADM6823VYRJZ-RL7 explicitly denotes RoHS compliance and lead-free construction. The device uses a lead-free 5-lead SOT-23 package (RJ-5) per JEDEC MO-178-AA, with SnAgCu solder finish and reflow profile compatible with standard lead-free assembly processes.
ADM6823VYRJZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.58V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
ADM6823VYRJZ-RL7 FAQ
1.How can I place an order for ADM6823VYRJZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6823VYRJZ-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 ADM6823VYRJZ-RL7 reliable?
The price and inventory of ADM6823VYRJZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6823VYRJZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM6823VYRJZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6823VYRJZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6823VYRJZ-RL7?
ADM6823VYRJZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6823VYRJZ-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 ADM6823VYRJZ-RL7?
For technical support, including ADM6823VYRJZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6823VYRJZ-RL7 requirements.
6.How does Aetrix verify that ADM6823VYRJZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM6823VYRJZ-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 ADM6823VYRJZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM6823VYRJZ-RL7?
All ADM6823VYRJZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6823VYRJZ-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 ADM6823VYRJZ-RL7 part is unused and in its original packaging.
Return procedure for ADM6823VYRJZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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