My Inquiry
My Account
Analog Devices Inc. ADM8699ARNZ-REEL
- Part No.:
- ADM8699ARNZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADM8699ARNZ-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,909
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM8699ARNZ-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 timeout, and 1.0–2.25 s watchdog timeout. It serves as a system-level power integrity guardian in embedded controllers requiring fail-safe boot and runtime supervision.
For engineers reviewing the ADM8699ARNZ-REEL datasheet, ADM8699ARNZ-REEL pinout, ADM8699ARNZ-REEL application, or ADM8699ARNZ-REEL equivalent, key selection criteria include its 8-pin SOIC (R-8) package, WDI input for software activity monitoring, dual RESET outputs (active-low RESET and active-high RESET*), and guaranteed operation across –40°C to +85°C industrial temperature range.
Technical Context
The ADM8699ARNZ-REEL implements a precision bandgap-based voltage detector with 40 mV hysteresis to reject VCC transients and prevent false resets. Its internal monostable ensures minimum 140 ms RESET pulse duration after power-up or brown-out recovery.
Unlike the ADM8698, the ADM8699ARNZ-REEL adds a transition-sensitive watchdog timer triggered by rising/falling edges on WDI - not level detection - with automatic timeout reset on each edge. The watchdog can be disabled by floating WDI or biasing it to midsupply.
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 brown-out margin down to 3 V. |
| Reset Threshold | 4.65 V (typ), ±100 mV - set to accommodate 5% VCC variation while ensuring reliable power-fail detection. |
| RESET Active Time | 140–280 ms - guarantees sufficient hold time for microprocessor initialization and power stabilization. |
| Watchdog Timeout | 1.0–2.25 s - provides robust software execution verification without excessive sensitivity to timing jitter. |
| Supply Current | 70 µA (typ) - enables low-power operation in battery-backed or energy-constrained systems. |
| RESET Low Voltage @ VCC = 1 V | 12–200 mV - ensures valid logic-low output even during deep undervoltage, preventing metastability in µP reset circuits. |
| WDI Input Threshold | Logic low ≤ 0.8 V, logic high ≥ 3.5 V - compatible with TTL/CMOS I/O levels and tolerant of noise margins. |
Pinout & Package
ADM8699ARNZ-REEL is housed in an 8-pin SOIC (R-8) package per JEDEC MS-012, with 1.27 mm pitch and 5.0 mm × 6.2 mm body dimensions. Pin 1 marked via notch or dot; device is surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Power supply input | Accepts 3.0–5.5 V; powers internal voltage detector, watchdog logic, and output drivers. |
| 2 (GND) | Ground reference | Common return path for all analog and digital functions; must be low-impedance connection. |
| 3 (RESET) | Active-low reset output | Drives µP reset pin low during power-up, brown-out, or watchdog timeout; sinks 3.2 mA min. |
| 4 (WDI) | Watchdog input | Edge-triggered input; toggling required every ~1.6 s to prevent reset; three-level (low/mid/high) detection. |
| 5 (NC) | No connect | Internally unconnected; must remain floating or grounded - no external connection permitted. |
| 6 (NC) | No connect | Internally unconnected; must remain floating or grounded - no external connection permitted. |
| 7 (RESET*) | Active-high reset output | Inverted complement of RESET; provided only in SOIC packages for µPs requiring active-high reset assertion. |
| 8 (GND) | Ground reference | Second ground pin for improved noise immunity and current return path separation. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET at VCC = 1 V | Ensures deterministic microprocessor shutdown and restart behavior even under severe undervoltage conditions. |
| 40 mV reset threshold hysteresis | Prevents oscillatory reset assertion during noisy or slowly recovering VCC transitions. |
| Transition-based watchdog timer | Eliminates false timeouts caused by static I/O states; requires only one edge per timeout period. |
| Dual RESET outputs (RESET / RESET*) | Supports both active-low and active-high microprocessor reset inputs without external inverters. |
| Watchdog disable via WDI float/midsupply | Enables hardware-configurable watchdog enable/disable without firmware or external components. |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Real-time control logic in programmable logic controllers exposed to wide ambient temperature swings and EMI-rich factory environments. IC Role / Device Role / Timing Role: Supervises 5 V power rail integrity and verifies cyclic firmware execution via WDI toggling synchronized to control loop timing. Use Value: Prevents silent lockup during electromagnetic interference events by forcing hard reset when watchdog fails to detect expected software state transitions. | Use Scenario: Centralized body electronics managing door locks, lighting, and window controls in 12 V automotive systems with LDO-regulated 5 V domains. IC Role / Device Role / Timing Role: Monitors post-regulation 5 V supply and validates microcontroller responsiveness using dedicated I/O line as WDI source. Use Value: Guarantees safe fallback to known state during brown-out or firmware hang, meeting ISO 16750-2 transient immunity requirements. |
| Medical Diagnostic Instrumentation | Network Edge Routers |
Use Scenario: Portable ultrasound or patient monitor units where data integrity and fail-safe boot are critical for regulatory compliance (IEC 62304). IC Role / Device Role / Timing Role: Provides power-on reset sequencing and runtime watchdog supervision tied to safety-critical task scheduler heartbeat. Use Value: Ensures deterministic reset behavior down to 1 V VCC, enabling controlled shutdown before memory corruption occurs during battery depletion. | Use Scenario: Fanless enterprise routers operating continuously in telecom cabinets with limited thermal headroom. IC Role / Device Role / Timing Role: Supervises primary 5 V domain and monitors firmware health via GPIO-driven WDI signal from network stack process. Use Value: Delivers 140+ ms reset pulse and 1.6 s watchdog timeout - balancing rapid recovery with sufficient margin to avoid spurious resets during packet burst processing. |
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 reset threshold; no watchdog timer; only active-low RESET output; 8-pin SOIC package. | Lacks runtime software supervision capability; suitable only for basic power-monitoring use cases. | Select when watchdog functionality is unnecessary and cost or footprint minimization is prioritized over runtime fault detection. |
| TPS3808G33DBVR | Adjustable reset threshold (via external resistor); no watchdog; 3.3 V fixed version; 5-pin SOT-23 package. | Smaller footprint but lacks WDI input and dual RESET outputs; requires external components for threshold tuning. | Choose for space-constrained 3.3 V systems where adjustable threshold is needed and watchdog supervision is omitted. |
Compared with MAX699ESA+ and TPS3808G33DBVR, the ADM8699ARNZ-REEL uniquely integrates a transition-triggered watchdog with guaranteed sub-1 V reset operation and dual-polarity RESET outputs - making it the only option among the three that satisfies simultaneous requirements for brown-out resilience, runtime software validation, and flexible µP interface compatibility.
Availability
ADM8699ARNZ-REEL is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical diagnostic instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature performance.
Supply support for ADM8699ARNZ-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 ADM8698/ADM8699 family was designed specifically for robust microprocessor power supervision in harsh environments - delivering guaranteed reset assertion at ultra-low VCC, precise voltage monitoring, and configurable watchdog supervision without external timing components.
FAQ
What is the function of the WDI pin on the ADM8699ARNZ-REEL?
The WDI (Watchdog Input) pin on the ADM8699ARNZ-REEL is a transition-sensitive input that monitors microprocessor software activity. Each rising or falling edge resets the 1.0–2.25 s watchdog timer; failure to toggle within that period forces RESET low. The ADM8699ARNZ-REEL treats WDI as a three-level input - low, high, or midsupply - and disables the watchdog if left floating or biased to ~VCC/2.
Does the ADM8699ARNZ-REEL provide both active-high and active-low reset outputs?
Yes, the ADM8699ARNZ-REEL provides two reset outputs in its 8-pin SOIC (R-8) package: active-low RESET (Pin 3) and active-high RESET* (Pin 7). This dual-output configuration eliminates the need for external inverters when interfacing with microprocessors requiring either polarity, and is confirmed in the ADM8699 pin function descriptions and typical application diagrams.
What is the minimum VCC voltage at which the ADM8699ARNZ-REEL guarantees RESET assertion?
According to the ADM8699 specifications table, the ADM8699ARNZ-REEL guarantees RESET output remains functional (logic low) with VCC as low as 1 V. At this voltage, RESET low voltage is specified at 12–200 mV with 100 µA sink current - ensuring valid logic-level assertion even during deep undervoltage conditions.
Can the watchdog timer on the ADM8699ARNZ-REEL be disabled without modifying firmware?
Yes, the watchdog timer on the ADM8699ARNZ-REEL can be disabled without firmware changes by leaving the WDI pin floating or biasing it to approximately VCC/2 (midsupply). The datasheet explicitly states the watchdog timer is disabled under these conditions, providing hardware-selectable supervision - a feature confirmed in the "Circuit Information" section and PIN FUNCTION DESCRIPTIONS.
What is the reset timeout duration of the ADM8699ARNZ-REEL after VCC recovers from a brown-out?
The ADM8699ARNZ-REEL asserts RESET for a minimum of 140 ms and maximum of 280 ms after VCC rises above the 4.65 V reset threshold. This monostable-generated delay ensures stable power conditions before releasing the microprocessor from reset, and is specified across the full –40°C to +85°C operating temperature range.
ADM8699ARNZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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, 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:
- 8-SOIC
ADM8699ARNZ-REEL FAQ
1.How can I place an order for ADM8699ARNZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8699ARNZ-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 ADM8699ARNZ-REEL reliable?
The price and inventory of ADM8699ARNZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8699ARNZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM8699ARNZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8699ARNZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8699ARNZ-REEL?
ADM8699ARNZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8699ARNZ-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 ADM8699ARNZ-REEL?
For technical support, including ADM8699ARNZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8699ARNZ-REEL requirements.
6.How does Aetrix verify that ADM8699ARNZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM8699ARNZ-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 ADM8699ARNZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM8699ARNZ-REEL?
All ADM8699ARNZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM8699ARNZ-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 ADM8699ARNZ-REEL part is unused and in its original packaging.
Return procedure for ADM8699ARNZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM8699ARNZ-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…
