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Analog Devices Inc. ADM699ARZ-REEL
- Part No.:
- ADM699ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADM699ARZ-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
ADM699ARZ-REEL from Analog Devices is a microprocessor supervisory circuit with precision 4.65 V voltage monitoring, 1.6 s typical watchdog timeout, and guaranteed RESET assertion down to VCC = 1 V. It features WDI input, active-low RESET, active-high RESET (SOIC), and WDO output - designed for reliable power-up, brown-out, and software fault recovery in 5 V embedded systems.
For engineers reviewing the ADM699ARZ-REEL datasheet, ADM699ARZ-REEL pinout, ADM699ARZ-REEL application, or ADM699ARZ-REEL equivalent, key selection criteria include its 40 mV reset threshold hysteresis, 140–280 ms reset pulse width, SOIC-16 package compatibility, and watchdog timer behavior requiring I/O toggling every ~1.6 s to prevent system lockup.
Technical Context
The ADM699ARZ-REEL integrates a precision bandgap-based voltage detector with 4.65 V nominal threshold and 40 mV hysteresis to ensure glitch-immune power monitoring. Its internal monostable guarantees ≥140 ms RESET assertion after VCC rises above threshold and maintains functional RESET output even at VCC = 1 V.
It implements a transition-triggered watchdog timer with 1.0–2.25 s timeout (typ. 1.6 s), reset on each WDI edge. WDO provides independent watchdog status, and the SOIC-16 package delivers both inverted (RESET) and non-inverted (RESET) reset outputs plus WDO - unlike DIP/Q-8 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3.0 V to 5.5 V - supports 5 V ±10% supply with margin for ripple and dropout. |
| Reset Threshold | 4.65 V (typ), 40 mV hysteresis - ensures stable reset release during noisy or slowly rising VCC. |
| Reset Pulse Width | 140–280 ms - holds µP in reset long enough for power stabilization and clock startup. |
| Watchdog Timeout | 1.0–2.25 s (typ. 1.6 s) - provides sufficient window for firmware service while detecting hangs. |
| Supply Current | 0.6 mA (typ), ≤1.95 mA - enables low-power operation without compromising supervision integrity. |
| WDI Input Threshold | Logic low ≤0.8 V, logic high ≥3.5 V - compatible with TTL/CMOS 5 V I/O without level shifting. |
| RESET Output Drive | 0.4 V @ 1.6 mA sink - ensures solid logic-low assertion into standard µP reset inputs. |
Pinout & Package
ADM699ARZ-REEL is supplied in a 16-lead SOIC (R-16) package with 1.27 mm pitch, 10.3 mm × 7.5 mm body, and moisture sensitivity level (MSL) 3. Pin functions are validated per Analog Devices ADM698/ADM699 Rev. 0 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 12, 13, 14, 15 | GND / NC | Ground reference pins (1, 2, 3, 4, 12, 13, 14, 15); pins 5–11 and 16 are functional. |
| 5, 6, 7, 8 | VCC | Power supply input - multiple VCC pins reduce IR drop and improve noise immunity. |
| 9 | WDI | Watchdog input - edge-sensitive; toggling resets timeout; floating disables watchdog. |
| 10 | RESET | Active-low reset output - asserted low during power-up, brown-out, or watchdog timeout. |
| 11 | RESET | Active-high reset output - complement of pin 10; provided only in SOIC packages. |
| 16 | WDO | Watchdog output - goes low if WDI not toggled within timeout; high otherwise or after transition. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET at VCC = 1 V | Ensures deterministic µP shutdown and restart even during deep undervoltage conditions. |
| 40 mV Reset Threshold Hysteresis | Prevents oscillatory reset assertion during slow or noisy VCC transitions near threshold. |
| Transition-Triggered Watchdog | Eliminates need for precise timing intervals - firmware only requires periodic I/O toggle. |
| Dual Reset Outputs (SOIC) | Provides both active-low and active-high RESET signals for direct interface with diverse µP families. |
| Low 0.6 mA Quiescent Current | Minimizes impact on system power budget without sacrificing supervision reliability. |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Continuous operation in temperature-varying environments with intermittent power interruptions. IC Role / Device Role / Timing Role: Power supervisor and watchdog - monitors 5 V rail and validates firmware execution via WDI toggling. Use Value: Prevents silent lockups by forcing hard reset when µP fails to service WDI within 1.6 s, ensuring fail-safe recovery. |
Use Scenario: Microcontroller-based lighting, door lock, or HVAC control subject to battery voltage sag. IC Role / Device Role / Timing Role: Brown-out detector and reset sequencer - asserts RESET below 4.65 V and holds ≥140 ms. Use Value: Guarantees clean µP initialization even as VCC drops to 1 V, avoiding undefined state during cranking events. |
| Medical Diagnostic Instruments | Network Edge Routers |
|
Use Scenario: Safety-critical data acquisition systems requiring deterministic boot and runtime integrity. IC Role / Device Role / Timing Role: Dual-role supervisor - provides both power-fail detection and software hang detection via WDI/WDO. Use Value: Enables certified fault response: WDO status can trigger logging or safe-state entry before full reset occurs. |
Use Scenario: High-availability embedded networking hardware with strict uptime requirements. IC Role / Device Role / Timing Role: System-level watchdog coordinator - uses WDI to monitor main CPU activity and WDO to feed external monitoring logic. Use Value: Supports layered supervision: WDO signal feeds FPGA or secondary controller for graceful failover before ADM699ARZ-REEL initiates reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX699ESA+ | 4.65 V reset threshold, 1.6 s watchdog, SOIC-8 package - no WDO output or dual RESET signals. | Lacks WDO status feedback and active-high RESET; limited pin count restricts routing flexibility. | Select when board space is constrained and WDO monitoring is unnecessary. |
| TPS3823-46DBVR | 4.63 V threshold, no watchdog, 200 ms reset pulse, SOT-23-5 - single-output, no WDI/WDO capability. | Supplies only power monitoring; cannot replace watchdog functionality of ADM699ARZ-REEL. | Select only for basic reset generation where software supervision is handled externally. |
Compared with MAX699ESA+ and TPS3823-46DBVR, the ADM699ARZ-REEL uniquely delivers integrated watchdog status (WDO), dual-reset polarity, and guaranteed sub-1.5 V operation - making it irreplaceable in designs requiring autonomous firmware health verification and robust low-voltage reset assurance.
Availability
ADM699ARZ-REEL is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical diagnostic instruments requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across –40°C to +85°C.
Supply support for ADM699ARZ-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 since 1965.
The ADM698/ADM699 family was engineered specifically for robust 5 V microprocessor supervision - combining precision voltage monitoring, ultra-low-voltage reset hold, and transition-based watchdog timing in a single IC.
FAQ
What is the watchdog timeout accuracy of the ADM699ARZ-REEL?
The ADM699ARZ-REEL watchdog timeout is specified from 1.0 s to 2.25 s over temperature and supply voltage, with 1.6 s typical at +25°C and VCC = 5 V. This range accommodates process variation and ensures reliable detection of firmware hangs without false triggers due to timing jitter or environmental drift.
Does the ADM699ARZ-REEL require external components for basic operation?
No - the ADM699ARZ-REEL operates autonomously with only VCC, GND, and WDI connections. A 0.1 µF bypass capacitor at VCC is recommended for noise immunity, but no external resistors, capacitors, or timing components are needed for reset generation or watchdog function.
Can the ADM699ARZ-REEL be used with 3.3 V microprocessors?
The ADM699ARZ-REEL is designed for 5 V systems: its VCC range is 3.0 V to 5.5 V, but its 4.65 V reset threshold and WDI logic levels (0.8 V/3.5 V) assume 5 V I/O. Using it with 3.3 V µPs requires level translation on WDI and RESET lines to avoid invalid thresholds or drive conflicts.
How does the ADM699ARZ-REEL behave when the WDI pin is left unconnected?
When WDI is floating, the ADM699ARZ-REEL disables the watchdog timer and WDO remains high. RESET continues normal power-monitoring operation - asserting low during brown-out or power-up. This allows safe deployment in systems that may later add watchdog functionality without hardware change.
Is the ADM699ARZ-REEL pin-compatible with earlier ADM699 variants?
Yes - ADM699ARZ-REEL shares identical SOIC-16 pinout and electrical behavior with ADM699AR and ADM699AR-REEL. The "Z" suffix denotes tape-and-reel packaging per EIA-481; all share same thermal, timing, and functional specifications per Rev. 0 datasheet.
ADM699ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.65V
- Output:
- Push-Pull, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADM699ARZ-REEL FAQ
1.How can I place an order for ADM699ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM699ARZ-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 ADM699ARZ-REEL reliable?
The price and inventory of ADM699ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM699ARZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM699ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM699ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM699ARZ-REEL?
ADM699ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM699ARZ-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 ADM699ARZ-REEL?
For technical support, including ADM699ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM699ARZ-REEL requirements.
6.How does Aetrix verify that ADM699ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM699ARZ-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 ADM699ARZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM699ARZ-REEL?
All ADM699ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM699ARZ-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 ADM699ARZ-REEL part is unused and in its original packaging.
Return procedure for ADM699ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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