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Analog Devices Inc. ADM8698ARN-REEL
- Part No.:
- ADM8698ARN-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADM8698ARN-REEL.pdf
- Description:
- IC SUPERVISOR MPU 4.65V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
ADM8698ARN-REEL from Analog Devices is a microprocessor supervisory circuit designed for 5 V power supply monitoring in embedded systems. It provides guaranteed RESET assertion down to VCC = 1 V, precision 4.65 V voltage threshold with 40 mV hysteresis, and 140–280 ms reset active time - enabling reliable power-up/power-down sequencing in industrial controllers and automotive ECUs.
For engineers reviewing the ADM8698ARN-REEL datasheet, ADM8698ARN-REEL pinout, ADM8698ARN-REEL application, or ADM8698ARN-REEL equivalent, key selection criteria include brown-out detection margin, low-VCC reset functionality, watchdog-free operation (vs. ADM8699), SOIC-8 package compatibility, and industrial temperature range support (–40°C to +85°C).
Technical Context
The ADM8698ARN-REEL implements a precision bandgap-based voltage detector with fixed 4.65 V trip point and built-in 40 mV hysteresis to prevent noise-induced false resets. Its internal monostable generates a minimum 140 ms RESET pulse on power-up and during brown-out events, independent of external timing components.
Unlike the ADM8699, this variant omits the WDI input and WDO output - confirming it as a dedicated reset supervisor without watchdog functionality. All logic outputs are open-drain, requiring external pull-ups, and RESET remains functional even as VCC drops to 1 V, ensuring deterministic microprocessor shutdown.
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 accommodates undervoltage conditions before reset activation. |
| Reset Threshold | 4.65 V (typ), ±100 mV - precisely tracks 5 V rail; hysteresis prevents chatter during marginal supply recovery. |
| RESET Active Time | 140–280 ms - ensures full microprocessor initialization and clock stabilization before release. |
| Supply Current | 70 µA (typ) - enables ultra-low-power operation in battery-backed or energy-constrained systems. |
| Min VCC for RESET | 1 V - guarantees reset signal integrity through deep brown-out, holding µP in safe state until full recovery. |
| Output Type | Open-drain RESET - allows wired-OR configuration and flexible voltage-level translation via external pull-up. |
| Temp Range | –40°C to +85°C - qualified for industrial and automotive under-hood environments without derating. |
Pinout & Package
ADM8698ARN-REEL is housed in an 8-pin SOIC (R-8) package per Analog Devices ordering guide, with 1.27 mm pitch, 4.90 × 3.90 mm body, and JEDEC MS-012AC compliant footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Power Supply Input | +5 V main supply connection; internal voltage monitor reference; requires local 0.1 µF decoupling. |
| 2 (GND) | Ground Reference | 0 V return for all analog and digital functions; must be low-impedance connection to system ground plane. |
| 3 (RESET) | Active-Low Reset Output | Open-drain output asserted low during power-up, brown-out, or reset timeout; requires external pull-up resistor. |
| 4 (NC) | No Connect | Unbonded pin; must remain unconnected and floating - no routing or soldering permitted. |
| 5 (NC) | No Connect | Unbonded pin; electrically isolated - no internal connection; leave unconnected. |
| 6 (NC) | No Connect | Unbonded pin; no function; avoid PCB trace or pad to prevent parasitic coupling. |
| 7 (GND) | Ground Reference | Second ground pin for improved thermal and noise performance; tie directly to same ground net as Pin 2. |
| 8 (VCC) | Power Supply Input | Redundant VCC connection for enhanced current handling and reduced package resistance; connect to same 5 V net as Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed reset at VCC = 1 V | Ensures microprocessor remains held in reset during deep undervoltage events, preventing undefined execution states. |
| 40 mV reset threshold hysteresis | Eliminates false triggering from supply ripple or transient noise near the 4.65 V trip point. |
| 140 ms minimum reset pulse width | Meets typical microprocessor tPU requirements without external RC timing components. |
| 70 µA quiescent current | Reduces standby power draw in always-on systems such as telematics or sensor nodes. |
| Industrial temperature qualification | Validated operation across –40°C to +85°C enables use in non-climate-controlled enclosures and engine bays. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
Use Scenario: Power sequencing and fault recovery in programmable logic controllers exposed to wide ambient temperature swings and line transients. IC Role / Device Role / Timing Role: Primary reset supervisor asserting active-low RESET during 5 V rail brown-out or cold start. Use Value: Prevents firmware corruption by guaranteeing µP reset hold time ≥140 ms and maintaining reset assertion down to VCC = 1 V. |
Use Scenario: Reliable reset generation for microcontrollers managing door locks, lighting, and window motors in vehicle body electronics. IC Role / Device Role / Timing Role: Voltage-monitoring reset generator with high noise immunity and extended temperature operation. Use Value: 40 mV hysteresis and –40°C to +85°C rating ensure robust reset behavior despite battery voltage sag and under-hood thermal stress. |
| Medical Diagnostic Instrument | Point-of-Sale Terminal |
|
Use Scenario: Ensuring deterministic boot sequence in portable diagnostic devices where power interruption may occur during data acquisition. IC Role / Device Role / Timing Role: Fail-safe reset source that remains functional below 2 V, enabling graceful shutdown before data loss. Use Value: RESET output guaranteed active at VCC = 1 V prevents partial register writes and memory corruption during rapid power collapse. |
Use Scenario: Maintaining system reliability in retail terminals operating continuously in commercial environments with unstable AC mains. IC Role / Device Role / Timing Role: Low-quiescent-current (70 µA) supervisor providing clean reset during brown-out and power-cycle events. Use Value: Ultra-low supply current extends backup battery life during AC outage while preserving reset integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX698ESA+ | 4.63 V reset threshold, 20 µA supply current, no 1 V reset guarantee; SOIC-8 package. | Lacks guaranteed reset below 2 V; suitable only where brown-out depth is shallow and power stability is high. | Select when ultra-low IQ dominates over deep-brown-out resilience. |
| TPS3808G33DBVR | 3.3 V fixed threshold, adjustable delay (0–10 s), 1.6 µA IQ, but not 5 V compatible. | Requires level-shifting for 5 V systems; optimized for low-voltage µPs, not legacy 5 V designs. | Choose only if migrating to 3.3 V architecture and needing programmable reset timeout. |
Compared with MAX698ESA+ and TPS3808G33DBVR, the ADM8698ARN-REEL uniquely delivers guaranteed reset assertion at VCC = 1 V and precise 4.65 V monitoring for 5 V systems - making it irreplaceable in applications demanding fail-safe behavior during severe undervoltage conditions.
Availability
ADM8698ARN-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 ADM8698ARN-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, and automotive markets since 1965.
The ADM8698/ADM8699 family was engineered specifically for robust, low-component-count microprocessor supervision in 5 V systems - emphasizing voltage accuracy, low-VCC operation, and thermal stability over wide industrial ranges.
FAQ
What is the reset voltage threshold of the ADM8698ARN-REEL?
The ADM8698ARN-REEL features a precision 4.65 V reset voltage threshold with ±100 mV tolerance and 40 mV hysteresis. This value is laser-trimmed during production and specified over the full –40°C to +85°C temperature range. The ADM8698ARN-REEL uses this threshold to detect brown-out conditions on the 5 V VCC rail and assert the open-drain RESET output accordingly.
Does the ADM8698ARN-REEL include a watchdog timer?
No, the ADM8698ARN-REEL does not include a watchdog timer. It is the non-watchdog variant of the ADM8698/ADM8699 family. The ADM8699 variants (e.g., ADM8699ARN-REEL) add WDI and WDO pins; the ADM8698ARN-REEL omits these entirely and provides only voltage monitoring and reset generation. This simplifies design where software supervision is handled externally.
Can the ADM8698ARN-REEL operate reliably below 2 V?
Yes - the ADM8698ARN-REEL guarantees RESET output functionality down to VCC = 1 V. At VCC = 1 V, RESET remains active low with ≤200 mV output voltage while sinking 100 µA. This capability ensures the microprocessor stays held in reset during deep brown-out or battery depletion, preventing erratic behavior. No other parameter is specified below 3.0 V operation.
What package type is used for the ADM8698ARN-REEL?
The ADM8698ARN-REEL uses an 8-pin SOIC (Small Outline Integrated Circuit) package designated R-8 in Analog Devices' ordering guide. Its dimensions are 4.90 mm × 3.90 mm × 1.75 mm, with 1.27 mm lead pitch and JEDEC MS-012AC compliance. Pins 1 and 8 are both VCC; Pins 2 and 7 are both GND; Pin 3 is RESET; Pins 4–6 are NC.
Is the ADM8698ARN-REEL pin-compatible with the ADM698?
Yes - the ADM8698ARN-REEL is a direct functional and pin-compatible upgrade for the ADM698AN/ADM698AR. Both share identical 8-pin SOIC/DIP pinouts, 4.65 V reset threshold, and open-drain RESET output. The ADM8698ARN-REEL improves upon the ADM698 with lower supply current (70 µA vs. 120 µA), tighter threshold tolerance, and guaranteed 1 V operation - requiring no PCB changes.
ADM8698ARN-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- -
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADM8698ARN-REEL FAQ
1.How can I place an order for ADM8698ARN-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8698ARN-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 ADM8698ARN-REEL reliable?
The price and inventory of ADM8698ARN-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8698ARN-REEL is usually 5 days.
3.What payment methods are accepted for ADM8698ARN-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8698ARN-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8698ARN-REEL?
ADM8698ARN-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8698ARN-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 ADM8698ARN-REEL?
For technical support, including ADM8698ARN-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8698ARN-REEL requirements.
6.How does Aetrix verify that ADM8698ARN-REEL is sourced from the original manufacturer or authorized distributors?
All ADM8698ARN-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 ADM8698ARN-REEL meets industry standards.
7.What is the process for return or replacement of ADM8698ARN-REEL?
All ADM8698ARN-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM8698ARN-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 ADM8698ARN-REEL part is unused and in its original packaging.
Return procedure for ADM8698ARN-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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