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Analog Devices Inc. ADM8698ARN
- Part No.:
- ADM8698ARN
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADM8698ARN.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,091
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Product details
Overview
ADM8698ARN 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, 140–280 ms reset active time, and 70 µA supply current. It is used in industrial controllers and automotive ECUs where reliable power-on reset and brown-out protection are critical.
For engineers reviewing the ADM8698ARN datasheet, ADM8698ARN pinout, ADM8698ARN application, or ADM8698ARN equivalent, key selection considerations include its guaranteed reset functionality at ultra-low VCC, fixed 4.65 V threshold, watchdog-free architecture (vs. ADM8699), SOIC-8 package compatibility, and industrial temperature range support.
Technical Context
The ADM8698ARN implements a precision bandgap-based voltage detector with internal hysteresis to avoid false triggering during VCC transients. Its reset generator uses an internal monostable to ensure minimum 140 ms RESET pulse width after power-up or brown-out recovery.
No watchdog logic is present - unlike the ADM8699, the ADM8698ARN lacks WDI input, WDO output, and transition detection circuitry. All timing and threshold behavior is strictly tied to VCC monitoring and internal RC timing elements.
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 detection down to 3 V. |
| Reset Threshold | 4.65 V (typ), ±100 mV - set to accommodate 5% VCC variation while ensuring robust power-fail detection. |
| Reset Hysteresis | 40 mV - prevents oscillation during slow or noisy VCC transitions near threshold. |
| Reset Active Time | 140–280 ms - guarantees sufficient hold time for microprocessor initialization and peripheral stabilization. |
| Supply Current | 70 µA (typ) - enables low-power operation in battery-backed or energy-sensitive applications. |
| Min VCC for RESET | 1 V - ensures RESET remains asserted through deep undervoltage, preventing unstable processor operation. |
| RESET Output Type | Active-low open-drain - compatible with standard µP reset inputs requiring pull-up; sinks 3.2 mA at 4.4 V. |
Pinout & Package
ADM8698ARN is housed in an 8-pin SOIC (R-8) package per Analog Devices' ordering guide. Pin 1 is marked, and the device has no exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VCC) | Power Supply Input | Primary +5 V supply connection; internally powers all monitoring and reset logic. |
| 2 (GND) | Ground Reference | 0 V reference for voltage detection, reset timing, and output driver circuits. |
| 3 (RESET) | Active-Low Reset Output | Open-drain output asserted low during power-up, power-down, or brown-out; requires external pull-up. |
| 4 (NC) | No Connect | Unused pin; must be left unconnected - not internally bonded or functional. |
| 5 (NC) | No Connect | Unused pin; electrically isolated - no internal connection or function. |
| 6 (NC) | No Connect | Unused pin; no internal bond wire or circuit node attached. |
| 7 (GND) | Ground Reference | Second ground pin for improved noise immunity and lower ground impedance in high-noise environments. |
| 8 (VCC) | Power Supply Input | Dual VCC pin for enhanced power delivery integrity and reduced IR drop across package leads. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET at VCC = 1 V | Ensures microprocessor remains held in reset even during severe undervoltage, eliminating erratic boot behavior. |
| Precision 4.65 V Threshold | Matches standard 5 V ±5% supply tolerance, eliminating need for external resistor dividers or calibration. |
| 40 mV Internal Hysteresis | Prevents chatter on RESET during marginal VCC conditions without requiring external hysteresis components. |
| 140–280 ms Reset Pulse Width | Meets typical microprocessor minimum reset duration requirements without external timing capacitors. |
| 70 µA Quiescent Current | Reduces system standby power consumption - critical for battery-operated or always-on embedded devices. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power cycling and transient events in factory-floor control cabinets with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary power-on reset generator and brown-out detector for ARM Cortex-M based controller MCU. Use Value: Guarantees clean reset initiation even when 5 V rail dips to 3.2 V during motor switching noise, preventing firmware lockup. | Use Scenario: 5 V domain supervision in vehicle door modules subject to load-dump and cold-crank conditions. IC Role / Device Role / Timing Role: Standalone VCC monitor providing fail-safe reset signaling to microcontroller during battery voltage sag. Use Value: Maintains RESET assertion down to VCC = 1 V during cold-crank, ensuring MCU stays in known state until stable power returns. |
| Medical Infusion Pump | Point-of-Sale Terminal |
Use Scenario: Safety-critical power sequencing during AC/DC adapter plug-in or battery switchover. IC Role / Device Role / Timing Role: Single-chip reset supervisor ensuring deterministic boot before motor actuation or sensor sampling begins. Use Value: 40 mV hysteresis eliminates false resets caused by ripple on filtered 5 V rail, improving system reliability certification. | Use Scenario: Retail terminal operating in unregulated wall-power environments with frequent brown-outs. IC Role / Device Role / Timing Role: Core reset management IC for x86-compatible SoC powering display, keypad, and payment interface. Use Value: 140–280 ms guaranteed reset pulse ensures full SoC initialization completes before BIOS handoff, avoiding boot failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX698CSA+ | 4.63 V reset threshold, 20 µA supply current, no guaranteed reset below 2.5 V. | Lacks ultra-low-VCC reset guarantee; suitable only where brown-out depth is shallow. | Select when lowest quiescent current is prioritized over deep undervoltage robustness. |
| TPS3808G33DBVR | 3.3 V fixed threshold, adjustable delay, 1.5 µA IQ, but requires external capacitor for delay setting. | Designed for 3.3 V systems; incompatible with 5 V-only reset logic without level-shifting. | Choose only if migrating to 3.3 V core logic and programmable delay is required. |
Compared with MAX698CSA+ and TPS3808G33DBVR, the ADM8698ARN uniquely delivers guaranteed reset assertion at VCC = 1 V in a fixed 5 V system, eliminating design margin uncertainty in harsh power environments - a capability neither alternative provides.
Availability
ADM8698ARN is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical infusion pumps requiring stable component supply and long-term lifecycle assurance.
Supply support for ADM8698ARN 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.
The ADM8698ARN belongs to Analog Devices' microprocessor supervisory product line, engineered specifically for deterministic power-up sequencing and fail-safe brown-out response in 5 V embedded systems.
FAQ
What is the reset voltage threshold of the ADM8698ARN?
The ADM8698ARN features a precision 4.65 V reset voltage threshold with ±100 mV tolerance, optimized for nominal 5 V supplies with ±5% variation. This threshold is internally trimmed and includes 40 mV hysteresis to prevent oscillation during marginal VCC conditions. The ADM8698ARN does not support adjustable thresholds or external resistor programming.
Does the ADM8698ARN include a watchdog timer?
No, the ADM8698ARN does not include a watchdog timer. It is the non-watchdog variant of the ADM8698/ADM8699 family. Watchdog functionality (WDI input and WDO output) is exclusive to the ADM8699 series. The ADM8698ARN provides only power supply monitoring and reset generation - no transition detection or timeout logic is implemented.
What is the minimum VCC level at which ADM8698ARN guarantees RESET assertion?
The ADM8698ARN guarantees RESET output remains asserted (logic low) down to VCC = 1 V, as confirmed in the datasheet's electrical specifications table under "RESET Output Voltage (VCC = 1 V)". This ensures the microprocessor stays reliably held in reset during deep undervoltage events, such as cold-crank in automotive applications or battery depletion in portable systems.
What package type is used for the ADM8698ARN?
The ADM8698ARN is supplied in an 8-pin small-outline integrated circuit (SOIC) package, designated R-8 in Analog Devices' ordering guide. It measures 4.9 mm × 3.9 mm with 1.27 mm lead pitch and features two VCC pins (pins 1 and 8) and two GND pins (pins 2 and 7) for improved power integrity and noise rejection.
Can ADM8698ARN drive a microprocessor reset pin directly?
Yes, the ADM8698ARN's RESET output is an open-drain, active-low signal capable of sinking 3.2 mA at VCC = 4.4 V, which meets standard microprocessor reset input requirements. An external pull-up resistor (typically 4.7 kΩ to VCC) is required. The ADM8698ARN does not provide an active-high RESET output - that function is only available on 16-lead SOIC variants (e.g., ADM8698ARW) or the ADM8699 series.
ADM8698ARN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADM8698ARN FAQ
1.How can I place an order for ADM8698ARN through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8698ARN 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 reliable?
The price and inventory of ADM8698ARN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8698ARN is usually 5 days.
3.What payment methods are accepted for ADM8698ARN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8698ARN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8698ARN?
ADM8698ARN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8698ARN 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?
For technical support, including ADM8698ARN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8698ARN requirements.
6.How does Aetrix verify that ADM8698ARN is sourced from the original manufacturer or authorized distributors?
All ADM8698ARN 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 meets industry standards.
7.What is the process for return or replacement of ADM8698ARN?
All ADM8698ARN units undergo pre-shipment inspection (PSI). If there is an issue with ADM8698ARN, 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 part is unused and in its original packaging.
Return procedure for ADM8698ARN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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