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Analog Devices Inc. ADM706PAN
- Part No.:
- ADM706PAN
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADM706PAN.pdf
- Description:
- IC SUPERVISOR MPU 2.63V WD 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:44,623
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Product details
Overview
ADM706PAN from Analog Devices is a 3 V microprocessor supervisory circuit with active-high reset output, 2.63 V precision voltage monitor threshold, 200 ms reset pulse width, and integrated watchdog timer (1.6 s timeout). It ensures reliable power-on, brownout, and software-fault recovery in embedded controllers and battery-powered instrumentation.
For engineers reviewing the ADM706PAN datasheet, ADM706PAN pinout, ADM706PAN application, or ADM706PAN equivalent, key selection criteria include its active-high RESET logic, guaranteed operation down to VCC = 1 V, debounced manual reset input (MR), independent power-fail warning (PFI/PFO), and compatibility with 3 V/3.3 V systems requiring deterministic reset timing and watchdog supervision.
Technical Context
The ADM706PAN integrates a precision bandgap-based voltage reference (2.63 V ±70 mV), a 200 ms monostable reset generator, and a 1.6 s watchdog timer cleared by WDI transitions. Its internal 70 µA MR pull-up enables direct switch interfacing without external biasing.
It features dual-supervision capability: primary VCC monitoring for system reset and secondary 1.25 V PFI comparator for power-fail or low-battery warning. RESET remains valid down to VCC = 1 V, ensuring fail-safe microprocessor hold during deep undervoltage conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63 V ±70 mV - precisely triggers reset at 2.63 V supply drop, matching 3 V rail brownout detection requirements. |
| Reset Pulse Width | 200 ms typical - provides sufficient time for microprocessor power stabilization and firmware initialization after power-up or recovery. |
| Watchdog Timeout | 1.6 s - detects software lockup when WDI fails to toggle, enabling NMI-driven fault recovery before system hang. |
| Quiescent Current | 100 µA max at VCC < 3.6 V - enables long-term operation in battery-backed or energy-constrained applications. |
| Supply Range | 1.0 V to 5.5 V - guarantees functional RESET assertion even during severe brownout (down to 1 V), critical for orderly shutdown. |
| Reset Polarity | Active-high RESET - directly interfaces with microprocessors requiring high-asserted reset signals without level-shifting. |
| MR Input | Debounced, TTL/CMOS-compatible, 70 µA internal pull-up - eliminates need for external RC filtering or pull-up resistors. |
Pinout & Package
ADM706PAN is housed in an 8-lead narrow-body plastic dual in-line package (PDIP, N-8), compliant with JEDEC MS-001, with 0.300-inch body width and 0.100-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Manual Reset Input | Debounced TTL/CMOS-compatible input; asserted low (<0.6 V) forces 200 ms RESET pulse; internally pulled up with 70 µA current. |
| 2 (VCC) | Power Supply Input | Primary supply connection; requires 0.1 µF decoupling capacitor to GND for noise immunity and stable reset generation. |
| 3 (GND) | Ground Reference | Common 0 V reference for all analog and digital functions; must be low-impedance connection to system ground plane. |
| 4 (PFI) | Power-Fail Input | Noninverting input of 1.25 V comparator; monitors auxiliary supply via resistor divider; goes low on PFI < 1.25 V. |
| 5 (PFO) | Power-Fail Output | Open-drain active-low output signaling power failure or low battery; sinks ≥1.2 mA at VCC < 3.6 V. |
| 6 (WDI) | Watchdog Input | Edge-sensitive input; any transition (HI↔LO) resets 1.6 s watchdog timer; accepts pulses as narrow as 50 ns. |
| 7 (RESET) | Active-High Reset Output | Push-pull output asserting high during reset condition; drives loads up to 215 µA source / 1.2 mA sink at VCC < 3.6 V. |
| 8 (WDO) | Watchdog Output | Open-drain active-low output; goes low on watchdog timeout or VCC < reset threshold; requires external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET validity at VCC = 1 V | Ensures microprocessor remains held in reset during deep brownout, preventing undefined state or partial execution. |
| Integrated 1.25 V PFI comparator | Enables early-warning power-fail detection or secondary supply monitoring without external op-amps or references. |
| Debounced MR input with internal 70 µA pull-up | Eliminates external components for pushbutton reset circuits and simplifies PCB layout in space-constrained designs. |
| Independent watchdog timer with 1.6 s timeout | Provides hardware-enforced software health check, triggering NMI or system reset if firmware stalls or misses WDI toggles. |
| Active-high RESET output | Directly interfaces with processors like ARM Cortex-M series or legacy 8-bit MCUs requiring high-asserted reset signals. |
Applications
| Industrial Controller Monitoring | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Supervising PLC I/O modules during AC line fluctuations or backup battery switchover. IC Role / Device Role / Timing Role: Primary VCC supervisor generating 200 ms active-high RESET to hold controller in safe state during brownout. Use Value: Prevents spurious I/O writes or corrupted register states by guaranteeing reset assertion until supply stabilizes above 2.63 V. | Use Scenario: Managing power sequencing and low-battery shutdown in handheld multimeters or data loggers. IC Role / Device Role / Timing Role: Dual-role device: monitors main 3 V supply (VCC) and battery voltage via PFI divider for preemptive shutdown. Use Value: Extends usable battery life by triggering graceful save-and-hibernate routines before voltage collapses below MCU operating range. |
| Embedded Communication Gateway | Medical Diagnostic Equipment |
Use Scenario: Ensuring reliable boot and runtime integrity in cellular/Wi-Fi gateways handling critical network traffic. IC Role / Device Role / Timing Role: Watchdog supervisor: WDI toggled by communication stack heartbeat; WDO connected to NMI for immediate fault recovery. Use Value: Mitigates network stack hangs without requiring full system reboot, maintaining connectivity SLA during transient software faults. | Use Scenario: Securing safe power-down sequence in portable ultrasound or ECG devices during battery depletion. IC Role / Device Role / Timing Role: Combines VCC supervision (2.63 V threshold) and PFI-based battery voltage monitoring to initiate FDA-compliant shutdown protocols. Use Value: Guarantees patient data persistence and hardware safety interlocks activate before power loss compromises diagnostic accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADM706RANZ | Identical pinout and package; active-low RESET output instead of active-high; same 2.63 V threshold and 1.6 s watchdog. | Requires inverted reset logic or external inverter; suitable for systems designed around low-active reset signals. | Select ADM706RANZ only if target MCU or FPGA expects active-low reset assertion. |
| MAX706P | Pin-compatible upgrade path; same 2.63 V threshold and active-high RESET; higher quiescent current (120 µA typ vs. 100 µA). | Lacks guaranteed RESET validity below 1.2 V; less robust under extreme brownout conditions than ADM706PAN. | Choose MAX706P only for legacy design refresh where exact footprint reuse is mandatory and brownout margin >1.2 V is assured. |
Compared with ADM706RANZ and MAX706P, ADM706PAN uniquely delivers active-high reset with guaranteed sub-1 V operation and lower quiescent current-making it optimal for new designs prioritizing low-power reliability and direct interface simplicity.
Availability
ADM706PAN is available at Aetrix Electronics and suitable for industrial controllers, battery-powered instrumentation, embedded gateways, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.
Supply support for ADM706PAN 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 ADM706PAN belongs to Analog Devices' microprocessor supervisory product line, engineered specifically for deterministic power monitoring, watchdog supervision, and fail-safe reset generation in resource-constrained embedded systems.
FAQ
What is the reset threshold voltage of the ADM706PAN?
The ADM706PAN has a precision reset threshold of 2.63 V, with a tolerance of ±70 mV (2.55 V to 2.70 V). This value is factory-trimmed and specified over the full industrial temperature range (−40°C to +85°C). The threshold is optimized for reliable supervision of 3 V power rails, triggering reset during power-up, brownout, or power-down events. The ADM706PAN maintains this specification without external calibration or trimming components.
Does the ADM706PAN support active-high reset output?
Yes, the ADM706PAN provides an active-high RESET output (pin 7), distinguishing it from the ADM706R/ADM706S/ADM706T variants which offer active-low RESET. This allows direct connection to microprocessors, FPGAs, or ASICs that require a high-asserted reset signal without level-shifting circuitry. The output is push-pull, capable of sourcing 215 µA at VCC < 3.6 V, and remains valid down to VCC = 1 V.
How does the watchdog timer function in the ADM706PAN?
The ADM706PAN incorporates an independent watchdog timer with a nominal timeout period of 1.6 seconds. It is cleared by any edge (rising or falling) on the WDI input (pin 6); pulses as narrow as 50 ns are detected. If no transition occurs within 1.6 s, the open-drain WDO output (pin 8) goes low, signaling a software fault. WDO can drive a nonmaskable interrupt (NMI) or be connected to MR for automatic system reset.
Can the ADM706PAN monitor a secondary power supply?
Yes, the ADM706PAN includes a dedicated 1.25 V power-fail comparator accessible via the PFI (pin 4) and PFO (pin 5) terminals. By connecting a resistor divider from a secondary supply (e.g., battery or auxiliary rail) to PFI, the device generates a low-going PFO signal when the monitored voltage falls below 1.25 V. This enables early-warning low-battery detection or dual-rail supervision without additional ICs.
What package options are available for the ADM706PAN?
The ADM706PAN is supplied exclusively in the 8-lead narrow-body plastic dual in-line package (PDIP), designated N-8 per JEDEC MS-001. Its dimensions are 0.300 inches wide with 0.100 inch lead pitch. This through-hole package supports prototyping, legacy board assembly, and applications requiring mechanical robustness or ease of hand-soldering. Surface-mount alternatives (e.g., SOIC_N) exist for other variants like ADM706PARZ, but not for the ADM706PAN suffix.
ADM706PAN 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:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 160ms Minimum
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADM706PAN FAQ
1.How can I place an order for ADM706PAN through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM706PAN 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 ADM706PAN reliable?
The price and inventory of ADM706PAN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM706PAN is usually 5 days.
3.What payment methods are accepted for ADM706PAN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM706PAN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM706PAN?
ADM706PAN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM706PAN 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 ADM706PAN?
For technical support, including ADM706PAN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM706PAN requirements.
6.How does Aetrix verify that ADM706PAN is sourced from the original manufacturer or authorized distributors?
All ADM706PAN 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 ADM706PAN meets industry standards.
7.What is the process for return or replacement of ADM706PAN?
All ADM706PAN units undergo pre-shipment inspection (PSI). If there is an issue with ADM706PAN, 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 ADM706PAN part is unused and in its original packaging.
Return procedure for ADM706PAN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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