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Analog Devices Inc. ADM8699ANZ
- Part No.:
- ADM8699ANZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADM8699ANZ.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,929
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Product details
Overview
ADM8699ANZ 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 monitors 5 V power rails in embedded controllers and automotive ECUs requiring fail-safe reset behavior.
For engineers reviewing the ADM8699ANZ datasheet, ADM8699ANZ pinout, ADM8699ANZ application, or ADM8699ANZ equivalent, key selection criteria include watchdog input (WDI) transition detection, low-voltage RESET guarantee at 1 V, SOIC-8 package compatibility, and industrial temperature range support (–40°C to +85°C).
Technical Context
The ADM8699ANZ implements a precision bandgap-based voltage detector with 40 mV hysteresis and a monostable power-on reset generator. Its watchdog transition detector resets on every WDI edge and triggers RESET after 1.0–2.25 s of inactivity - not based on level duration alone but on absence of toggling.
Unlike basic reset supervisors, the ADM8699ANZ provides dual-reset capability: active-low RESET for standard µP reset lines and (in SOIC-16 variants) active-high RESET and WDO outputs. The ADM8699ANZ variant uses an 8-pin SOIC (R-8) package and includes WDI but excludes RESET and WDO pins present in the 16-lead version.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating 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 (4.5–4.75 V) - set to trigger before 5 V rail drops below 4.75 V, accommodating 5% supply variation. |
| RESET Active Time | 140–280 ms - ensures stable power-up timing for microprocessors with ≥100 ms initialization requirements. |
| Watchdog Timeout | 1.0–2.25 s - configurable via external RC only in higher-grade variants; ADM8699ANZ uses fixed 1.6 s typical timeout. |
| Supply Current | 70 µA typ - enables use in battery-backed or low-power standby modes without significant drain. |
| RESET Low Voltage Guarantee | Functional down to VCC = 1 V - maintains valid logic-low RESET output during deep undervoltage, preventing spurious release. |
| WDI Input Threshold | Logic low ≤0.8 V, logic high ≥3.5 V - compatible with TTL/CMOS I/O levels on 5 V µP systems. |
Pinout & Package
ADM8699ANZ is supplied in an 8-pin SOIC (R-8) package per ordering guide: "ADM8699AN" = N-8 (DIP), "ADM8699ARN" = R-8 (SOIC), "ADM8699ARW" = R-16 (SOIC). J-column confirms ADM8699ANZ maps to R-8. Pinout matches 8-pin SOIC configuration with WDI enabled.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC | Power supply input | Accepts 3.0–5.5 V; powers internal voltage detector, watchdog timer, and output drivers. |
| 2 - GND | Ground reference | Common return for all analog and digital functions; requires low-impedance connection to system ground plane. |
| 3 - RESET | Active-low reset output | Drives µP reset line low during power-up, brownout, or watchdog timeout; sinks 3.2 mA at VCC = 4.4 V. |
| 4 - WDI | Watchdog input | Three-level input detecting rising/falling edges; resets watchdog timer on each transition; disabled if floating or at midsupply. |
| 5 - NC | No connect | Not bonded internally; must remain unconnected per datasheet to avoid parasitic coupling or latch-up risk. |
| 6 - NC | No connect | Not bonded internally; left open; no routing or pull-up/pull-down required. |
| 7 - NC | No connect | Not bonded internally; electrically isolated; no PCB trace or component attachment. |
| 8 - NC | No connect | Not bonded internally; unused pin; must be left floating per functional block diagram and pin config. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET at VCC = 1 V | Ensures deterministic microprocessor hold state during deep undervoltage events, eliminating race conditions during power collapse. |
| 40 mV reset threshold hysteresis | Prevents oscillatory RESET toggling caused by noise or ripple near 4.65 V threshold, improving system immunity to supply transients. |
| Edge-triggered watchdog timer | Monitors software liveness via WDI transitions-not static level-reducing false triggers from stuck I/O lines or firmware glitches. |
| Low 70 µA quiescent current | Enables integration into always-on subsystems (e.g., CAN wake-up circuits) without compromising battery life or thermal budget. |
| Industrial temperature range | Specified from –40°C to +85°C, supporting deployment in engine control units, industrial PLCs, and outdoor instrumentation. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Programmable Logic Controller (PLC) |
|---|---|
Use Scenario: Monitors 5 V supply to MCU and peripheral ASICs during cold cranking, where battery voltage dips to 6–9 V and 5 V LDO output may sag transiently. IC Role / Device Role / Timing Role: Supervisory IC providing brownout reset and watchdog supervision of main application processor. Use Value: Prevents ECU lockup during voltage recovery by asserting RESET until VCC stabilizes above 4.65 V and confirming software liveness via WDI toggling. |
Use Scenario: Embedded controller powering I/O modules, communication interfaces, and safety monitoring circuits in factory automation cabinets. IC Role / Device Role / Timing Role: System-level power supervisor ensuring deterministic restart after AC line interruption or brownout. Use Value: Delivers 200 ms minimum RESET pulse to meet IEC 61000-4-11 immunity requirements and guarantees reset validity down to 1 V for safe shutdown. |
| Medical Infusion Pump Controller | Telecom Remote Terminal Unit (RTU) |
Use Scenario: Battery-backed microcontroller managing motor control, sensor acquisition, and alarm signaling in Class II medical devices. IC Role / Device Role / Timing Role: Fail-safe reset generator with watchdog supervision of critical therapy delivery firmware. Use Value: Detects firmware hang via WDI inactivity and forces hardware reset within 2.25 s, satisfying IEC 62304 SW safety requirement for Class C software. |
Use Scenario: Outdoor RTU operating on solar-charged batteries with wide ambient temperature swings and intermittent 5 V regulation. IC Role / Device Role / Timing Role: Power integrity monitor for ARM-based host processor handling LTE backhaul and sensor polling. Use Value: Maintains functional RESET output even as VCC decays to 1 V during battery depletion, enabling graceful shutdown and nonvolatile state save. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX699ESA+ | Fixed 4.65 V threshold, no watchdog timer, 200 ms reset pulse, SOIC-8 package. | Lacks WDI supervision; suitable only for basic power-monitoring applications without software liveness checking. | Select when watchdog functionality is unnecessary and cost sensitivity favors Maxim's legacy footprint. |
| TPS3823-46DBVR | 4.63 V threshold, 200 ms reset delay, no watchdog, SOT-23-5 package, 1.6 µA IQ. | Smaller footprint and ultra-low current, but no WDI input or 1 V RESET guarantee. | Choose for space-constrained, battery-powered designs where watchdog supervision is handled externally or omitted. |
Compared with MAX699ESA+ and TPS3823-46DBVR, the ADM8699ANZ uniquely combines guaranteed 1 V RESET operation, integrated edge-triggered watchdog, and industrial temperature rating in an SOIC-8 package - making it irreplaceable in safety-critical embedded systems requiring both power and software fault detection.
Availability
ADM8699ANZ is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, medical infusion pump controllers, and telecom remote terminal units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM8699ANZ 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control systems.
The ADM8698/ADM8699 family was designed specifically for robust microprocessor supervision in harsh environments - delivering reliable reset generation, brownout protection, and watchdog monitoring for mission-critical embedded applications.
FAQ
What is the function of the WDI pin on the ADM8699ANZ?
The WDI (Watchdog Input) pin on the ADM8699ANZ is a three-level input that detects rising or falling edges to reset the internal 1.0–2.25 s watchdog timer. If no transition occurs within the timeout period, the ADM8699ANZ asserts RESET low. WDI is disabled if left floating or driven to midsupply, allowing flexible enable/disable control without additional components.
Does the ADM8699ANZ provide RESET output at VCC = 1 V?
Yes, the ADM8699ANZ guarantees functional RESET output down to VCC = 1 V, with RESET sinking 100 µA while maintaining ≤200 mV voltage drop. This ensures the microprocessor remains held in a known reset state during deep undervoltage conditions, a key differentiator versus most competing supervisors.
What package type does the ADM8699ANZ use?
The ADM8699ANZ uses an 8-pin SOIC (Small Outline Integrated Circuit) package, designated R-8 in Analog Devices' ordering guide. It is distinct from the DIP-8 (N-8) and 16-lead SOIC (R-16) variants, and contains VCC, GND, RESET, WDI, and four NC pins - matching the functional block diagram for the ADM8699 in SOIC-8 form.
How does the ADM8699ANZ differ from the ADM8698ANZ?
The ADM8699ANZ includes a dedicated WDI input and edge-triggered watchdog timer absent in the ADM8698ANZ. Both share identical voltage monitoring (4.65 V threshold, 40 mV hysteresis) and RESET timing, but only the ADM8699ANZ can detect software hangs via WDI activity - making it mandatory for applications requiring runtime firmware validation.
Is the ADM8699ANZ suitable for automotive applications?
Yes, the ADM8699ANZ is qualified for industrial temperature range (–40°C to +85°C) and specified with robust ESD rating (>4 kV), precise threshold stability over temperature, and guaranteed operation down to 1 V - meeting core requirements for under-hood automotive modules such as engine control units and body control modules.
ADM8699ANZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.65V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADM8699ANZ FAQ
1.How can I place an order for ADM8699ANZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8699ANZ 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 ADM8699ANZ reliable?
The price and inventory of ADM8699ANZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8699ANZ is usually 5 days.
3.What payment methods are accepted for ADM8699ANZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8699ANZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8699ANZ?
ADM8699ANZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8699ANZ 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 ADM8699ANZ?
For technical support, including ADM8699ANZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8699ANZ requirements.
6.How does Aetrix verify that ADM8699ANZ is sourced from the original manufacturer or authorized distributors?
All ADM8699ANZ 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 ADM8699ANZ meets industry standards.
7.What is the process for return or replacement of ADM8699ANZ?
All ADM8699ANZ units undergo pre-shipment inspection (PSI). If there is an issue with ADM8699ANZ, 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 ADM8699ANZ part is unused and in its original packaging.
Return procedure for ADM8699ANZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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