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Analog Devices Inc. ADM8699ARW-REEL
- Part No.:
- ADM8699ARW-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ADM8699ARW-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
ADM8699ARW-REEL from Analog Devices is a microprocessor supervisory circuit with integrated watchdog timer, precision 4.65 V voltage monitor, guaranteed RESET assertion down to VCC = 1 V, 140–280 ms reset pulse width, and 1.0–2.25 s watchdog timeout. It serves as system-level power integrity guard in embedded controllers requiring fail-safe boot and runtime supervision.
For engineers reviewing the ADM8699ARW-REEL datasheet, ADM8699ARW-REEL pinout, ADM8699ARW-REEL application, or ADM8699ARW-REEL equivalent, key selection criteria include its 16-lead SOIC package with dual RESET outputs (active-low and active-high), WDI three-level input behavior, WDO status reporting, and industrial temperature range (–40°C to +85°C) compliance.
Technical Context
The ADM8699ARW-REEL implements a precision bandgap-based voltage detector with 40 mV hysteresis and a monostable power-on reset generator ensuring ≥140 ms RESET assertion after VCC crosses 4.65 V. Its watchdog transition detector resets on every WDI edge and times out if no transition occurs within 1.0–2.25 s.
Unlike the ADM8698, the ADM8699ARW-REEL adds WDI input and WDO output functionality, both available only in SOIC packages. The 16-lead SOIC variant provides dedicated non-inverted RESET and WDO pins-features absent in 8-pin variants-enabling direct interface with microprocessors requiring active-high reset and independent watchdog status monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3.0 V to 5.5 V - supports nominal 5 V systems with ±10% tolerance and brownout detection down to 3 V. |
| Reset Threshold | 4.65 V (typ), ±100 mV - precisely tracks 5 V rail; 40 mV hysteresis prevents chatter during marginal supply conditions. |
| RESET Pulse Width | 140–280 ms - ensures full microprocessor initialization and stable clock acquisition before release. |
| Watchdog Timeout | 1.0–2.25 s - configurable via external RC not required; fixed internal timing enables simple software supervision. |
| Supply Current | 70 µA (typ) - ultra-low quiescent draw minimizes impact on battery-backed or low-power systems. |
| RESET Low Voltage @ VCC=1V | 12–200 mV - guarantees reliable processor hold-down even during deep undervoltage recovery. |
| WDI Input Type | Three-level (0.8 V/3.5 V thresholds) - accepts TTL/CMOS logic levels and tolerates floating/midsupply disable. |
Pinout & Package
ADM8699ARW-REEL is supplied in a 16-lead SOIC (R-16) package with 1.27 mm pitch, 10.3 mm × 7.6 mm body, and gull-wing leads. Pin 1 marked by notch or dot; pin 1 is bottom-left corner when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 15, 16 | GND | Ground reference for all analog and digital functions; four pins reduce ground impedance and improve noise immunity. |
| 3, 4 | VCC | +5 V supply input; dual pins lower series resistance and improve decoupling effectiveness. |
| 5–7, 9–11, 13 | NC | No-connect; internally unconnected; must remain unpopulated or left floating per datasheet. |
| 8 | WDI | Watchdog input; three-level logic detects transitions; floating disables watchdog timer. |
| 12 | RESET | Active-high reset output; complement of pin 14; drives high when VCC > 4.65 V and WDI active. |
| 14 | RESET | Active-low reset output; asserted low during power-up, brownout, or watchdog timeout. |
| 16 | WDO | Watchdog status output; goes low only during WDI timeout; high otherwise, including at power-up. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET at VCC = 1 V | Ensures microprocessor remains held in known state during deep undervoltage recovery, preventing erratic execution. |
| Dual RESET outputs (active-low and active-high) | Eliminates need for external inverters when interfacing with mixed-signal processors requiring either polarity. |
| Three-level WDI input | Supports flexible software polling schemes (edge-triggered, level-toggled) and allows safe disable via floating connection. |
| WDO status reporting | Enables external fault logging or LED indication without consuming MCU GPIO resources. |
| 40 mV reset threshold hysteresis | Prevents false resets during noisy or slowly recovering 5 V rails, improving system robustness in industrial environments. |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Programmable logic controllers operating in factory-floor environments with fluctuating 5 V supplies and EMI exposure. IC Role / Device Role / Timing Role: Supervisory IC providing power-on reset, brownout protection, and runtime watchdog supervision of main MCU. Use Value: Prevents firmware lockup due to voltage sag or software hang; dual RESET outputs simplify integration with legacy and modern PLC MCUs. | Use Scenario: Central body control units managing door locks, lighting, and window motors in 12 V automotive systems with 5 V LDO-derived rails. IC Role / Device Role / Timing Role: Power integrity guardian ensuring safe MCU boot and detecting firmware stalls during CAN message processing loops. Use Value: WDO output feeds diagnostic bus; guaranteed 1 V RESET hold enables graceful shutdown during battery voltage collapse. |
| Medical Diagnostic Instruments | Network Edge Routers |
Use Scenario: Portable ultrasound or patient monitor devices requiring certified fail-safe boot and runtime supervision for IEC 62304 compliance. IC Role / Device Role / Timing Role: Safety-critical supervisory circuit asserting hardware reset on power anomaly or software freeze. Use Value: 70 µA supply current extends battery life; 140–280 ms RESET pulse meets medical device startup timing requirements. | Use Scenario: Carrier-grade edge routers with multi-core processors running real-time OS and packet forwarding stacks. IC Role / Device Role / Timing Role: System-level watchdog supervisor monitoring critical task scheduler activity via WDI toggling. Use Value: WDO signal triggers hardware log capture before reset; 1.0–2.25 s timeout aligns with TCP retransmission and keep-alive intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX699CSA+ | Single 4.65 V reset, no watchdog, 8-pin SOIC, 120 µA supply current | Lacks WDI/WDO; suitable only for basic power monitoring without runtime supervision | Select when watchdog functionality is unnecessary and board space is constrained to 8-pin footprint |
| TPS3823-46DBVR | 4.63 V threshold, 200 ms reset delay, no watchdog, 5-pin SOT-23, 15 µA supply current | Smaller package and lower IQ but no WDI/WDO; reset output only active-low | Select for ultra-low-power, space-constrained designs where watchdog is implemented in firmware or external logic |
Compared with MAX699CSA+ and TPS3823-46DBVR, the ADM8699ARW-REEL uniquely delivers integrated watchdog supervision, dual-polarity RESET outputs, and guaranteed sub-1 V operation-making it the only choice for safety-critical or runtime-failure-sensitive 5 V microprocessor systems requiring hardware-enforced recovery.
Availability
ADM8699ARW-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 industrial temperature performance.
Supply support for ADM8699ARW-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, communications, automotive, and healthcare markets since 1965.
The ADM8698/ADM8699 family was designed specifically for robust, low-component-count microprocessor supervision in harsh environments-emphasizing guaranteed low-voltage reset, precise threshold accuracy, and watchdog reliability over extended temperature ranges.
FAQ
What is the function of the WDI pin on the ADM8699ARW-REEL?
The WDI (Watchdog Input) pin on the ADM8699ARW-REEL is a three-level input that monitors microprocessor activity. Each rising or falling edge resets the internal 1.0–2.25 s watchdog timer. If no transition occurs within the timeout period, ADM8699ARW-REEL asserts RESET and pulls WDO low. Leaving WDI floating disables the watchdog function entirely.
Does the ADM8699ARW-REEL provide both active-high and active-low reset outputs?
Yes, the ADM8699ARW-REEL provides both reset polarities: pin 12 is an active-high RESET output, and pin 14 is the complementary active-low RESET output. This dual-output capability eliminates external inversion circuitry and supports mixed-logic microprocessors-both features confirmed in the ADM8699ARW-REEL's 16-lead SOIC pin configuration.
What is the minimum VCC voltage at which ADM8699ARW-REEL guarantees RESET assertion?
The ADM8699ARW-REEL guarantees RESET assertion (output low) down to VCC = 1 V, with RESET output voltage specified at 12–200 mV when sinking 100 µA. This ensures the connected microprocessor remains held in reset during deep undervoltage conditions, a key reliability feature validated across the –40°C to +85°C operating range.
Can the ADM8699ARW-REEL be used in 3.3 V systems?
No-the ADM8699ARW-REEL is specified for 3.0 V to 5.5 V VCC operation but is optimized for 5 V nominal systems. Its 4.65 V reset threshold is calibrated for 5 V rails, and performance parameters (e.g., RESET timing, WDI thresholds) are characterized only at VCC = 5 V ±10%. For 3.3 V systems, Analog Devices recommends the ADM809/ADM810 family instead.
How does the ADM8699ARW-REEL handle power-up reset timing?
On power-up, the ADM8699ARW-REEL holds RESET low for a minimum of 140 ms after VCC rises above the 4.65 V threshold. This monostable-generated delay ensures the 5 V supply stabilizes and the microprocessor clock achieves steady-state operation before release-preventing premature execution and meeting typical MCU reset timing requirements.
ADM8699ARW-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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
ADM8699ARW-REEL FAQ
1.How can I place an order for ADM8699ARW-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8699ARW-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 ADM8699ARW-REEL reliable?
The price and inventory of ADM8699ARW-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8699ARW-REEL is usually 5 days.
3.What payment methods are accepted for ADM8699ARW-REEL?
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4.How is shipping managed for ADM8699ARW-REEL?
ADM8699ARW-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8699ARW-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 ADM8699ARW-REEL?
For technical support, including ADM8699ARW-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8699ARW-REEL requirements.
6.How does Aetrix verify that ADM8699ARW-REEL is sourced from the original manufacturer or authorized distributors?
All ADM8699ARW-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 ADM8699ARW-REEL meets industry standards.
7.What is the process for return or replacement of ADM8699ARW-REEL?
All ADM8699ARW-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM8699ARW-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 ADM8699ARW-REEL part is unused and in its original packaging.
Return procedure for ADM8699ARW-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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