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Analog Devices Inc. ADM706RANZ
- Part No.:
- ADM706RANZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADM706RANZ.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:199
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Product details
Overview
ADM706RANZ from Analog Devices is a 3 V microprocessor supervisory circuit with active-low reset output, 2.63 V precision voltage monitoring threshold, 200 ms reset pulse width, and integrated watchdog timer with 1.6 s timeout-designed for reliable power-up, brownout, and software fault detection in embedded microcontroller systems.
For engineers reviewing the ADM706RANZ datasheet, ADM706RANZ pinout, ADM706RANZ application, or ADM706RANZ equivalent, key selection criteria include reset polarity compatibility, VCC validity down to 1 V, PFI/PFO power-fail warning capability, and MR debounced manual reset timing.
Technical Context
The ADM706RANZ implements a precision bandgap-based 2.63 V reset threshold comparator with 20 mV hysteresis, guaranteeing valid RESET assertion even as VCC drops to 1 V. Its internal watchdog timer monitors WDI transitions and asserts WDO low after 1.6 s of inactivity.
A dedicated 1.25 V power-fail comparator accepts external voltage via PFI and drives PFO low on under-voltage detection. The debounced MR input accepts TTL/CMOS logic or mechanical switch inputs and triggers a full 200 ms reset pulse independent of VCC level.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63 V ±70 mV - precisely holds microprocessor in reset until 3 V supply stabilizes above minimum operating voltage. |
| Reset Pulse Width | 200 ms typical - ensures sufficient time for power supply and CPU clock stabilization during power-up or recovery. |
| Quiescent Current | 100 µA at VCC < 3.6 V - enables long battery life in portable and low-power monitoring applications. |
| Watchdog Timeout | 1.6 s - provides robust software hang detection without false triggers from normal interrupt latency. |
| PFI Threshold | 1.25 V - allows configurable early-warning power-fail detection using external resistor divider networks. |
| VCC Validity Range | 1.0 V to 5.5 V - guarantees functional reset assertion during deep brownout and supports wide-input industrial supplies. |
| MR Input Pull-Up | 70 µA typical - eliminates need for external pull-up while enabling direct switch-to-ground connection. |
Pinout & Package
ADM706RANZ 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 | Debounced manual reset input | Accepts TTL/CMOS logic or switch closure to ground; internally pulled up with 70 µA current. |
| 2 - VCC | Power supply input | Primary supply rail (1.0–5.5 V); requires 0.1 µF decoupling capacitor to GND for noise immunity. |
| 3 - GND | Ground reference | Common return path for all analog and digital functions; must be low-impedance connection. |
| 4 - PFI | Power-fail comparator noninverting input | Monitors external supply via resistor divider; asserts PFO low when voltage falls below 1.25 V. |
| 5 - PFO | Power-fail comparator output | Active-low open-drain output signaling supply degradation; can drive MR or interrupt line. |
| 6 - WDI | Watchdog timer input | Edge-sensitive input; any transition resets 1.6 s timeout counter; accepts ≥50 ns pulses. |
| 7 - RESET | Active-low reset output | Push-pull output asserted low for 200 ms on power-up, brownout, or MR activation; valid down to VCC = 1 V. |
| 8 - WDO | Watchdog timer output | Active-low open-drain output asserted after watchdog timeout; also forced low during VCC undervoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET operation at VCC = 1 V | Ensures deterministic processor hold-down during deep brownout and uncontrolled power ramp-down. |
| Integrated 1.25 V power-fail comparator | Enables early-warning detection of supply collapse using simple external resistive dividers on PFI. |
| Debounced MR input with 200 ms timeout | Eliminates mechanical switch bounce and provides consistent reset duration regardless of press duration. |
| Independent watchdog timer with 1.6 s timeout | Provides fail-safe software supervision without relying on reset line feedback or shared timing resources. |
| Active-low RESET + open-drain WDO/PFO outputs | Supports wired-OR configurations, interrupt chaining, and flexible interface to diverse microcontroller reset architectures. |
Applications
| Industrial PLC Controller Monitoring | Portable Medical Instrument Reset Management |
|---|---|
Use Scenario: Continuous operation of programmable logic controllers in factory environments with fluctuating 3 V auxiliary rails. IC Role / Device Role / Timing Role: Supervises 3 V VCC rail, asserts RESET on brownout, and triggers watchdog interrupt if firmware hangs during I/O scan cycles. Use Value: Prevents spurious relay actuation or sensor misreads by ensuring deterministic reset during voltage sags and software lockups. | Use Scenario: Battery-powered handheld diagnostic devices requiring ultra-low quiescent current and reliable startup sequencing. IC Role / Device Role / Timing Role: Generates 200 ms power-on reset for ARM Cortex-M MCU and monitors main Li-ion supply via PFI for low-battery shutdown. Use Value: Extends usable battery life with 100 µA supply current while guaranteeing safe shutdown before critical voltage collapse. |
| Telecom Remote Terminal Unit (RTU) | Automotive Body Control Module (BCM) Subsystem |
Use Scenario: Unattended outdoor RTUs powered by solar-charged batteries with variable 3.3 V bus conditions. IC Role / Device Role / Timing Role: Uses PFI to detect pre-failure voltage droop on backup rail and asserts PFO to initiate graceful data save before power loss. Use Value: Preserves configuration integrity and event logs by triggering controlled firmware shutdown 100+ ms before VCC crosses 2.63 V. | Use Scenario: Secondary microcontroller subsystems (e.g., mirror control, seat memory) sharing 3 V domain with primary BCM. IC Role / Device Role / Timing Role: Provides isolated reset supervision and watchdog coverage independent of main BCM reset generator. Use Value: Enables modular design with independent failure containment-prevents single-point reset faults from disabling entire vehicle subsystem. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX706RCSA+ | Pin-compatible 8-pin SOIC variant; identical 2.63 V threshold and 200 ms reset, but lacks PFI/PFO comparator. | No power-fail warning capability; suitable only where reset supervision alone is required. | Select MAX706RCSA+ only if PFI/PFO functionality is unused and SOIC packaging is preferred. |
| TPS3808G12DBVR | Adjustable reset threshold (1.22–5.5 V) via external resistor; 200 ms fixed delay; no watchdog or PFI/PFO functions. | Requires external components for voltage setting; no built-in power-fail detection or software supervision. | Choose TPS3808G12DBVR when precise 1.2 V threshold is needed or when design flexibility outweighs integration benefits. |
Compared with MAX706RCSA+ and TPS3808G12DBVR, the ADM706RANZ delivers unique integration of precision reset, watchdog, and power-fail comparator in a single PDIP package-enabling compact, high-reliability supervision without external components or layout compromises.
Availability
ADM706RANZ is available at Aetrix Electronics and suitable for industrial PLCs, portable medical instruments, telecom RTUs, and automotive BCM subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM706RANZ 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 ADM706 family was engineered specifically for robust microprocessor supervision in harsh environments-delivering guaranteed reset validity down to 1 V, integrated watchdog, and power-fail warning in minimal footprint packages.
FAQ
What is the reset output polarity of the ADM706RANZ?
The ADM706RANZ features an active-low RESET output (pin 7), asserted low for 200 ms during power-up, brownout, or MR activation. This matches standard microprocessor reset input requirements. Unlike the ADM706P variant, ADM706RANZ does not provide active-high reset; its WDO and PFO outputs are open-drain and also active-low.
Does the ADM706RANZ support operation below 3 V supply voltage?
Yes, the ADM706RANZ operates over 1.0 V to 5.5 V and guarantees valid RESET assertion down to VCC = 1 V. Its internal circuitry remains functional and drives RESET low reliably during deep brownout conditions, ensuring the microprocessor stays held in reset until stable power returns.
How does the watchdog timer in the ADM706RANZ function?
The ADM706RANZ watchdog timer monitors the WDI input (pin 6): any rising or falling edge resets the 1.6 s timeout counter. If no transition occurs within that period, WDO (pin 8) goes low. WDO is also forced low whenever VCC drops below 2.63 V, providing coordinated fault response during power events.
Can the ADM706RANZ monitor a second power supply?
Yes, the ADM706RANZ includes a dedicated 1.25 V power-fail comparator accessible via PFI (pin 4) and PFO (pin 5). By connecting an external resistor divider from a secondary supply to PFI, designers can configure early-warning detection-e.g., triggering PFO to assert MR and generate system reset when auxiliary rail fails.
What package type is used for the ADM706RANZ?
The ADM706RANZ uses an 8-lead narrow-body plastic dual in-line package (PDIP, N-8), per JEDEC MS-001. It measures 0.300 inches wide with 0.100-inch lead pitch and is rated for −40°C to +85°C operation-ideal for through-hole prototyping, legacy industrial designs, and applications requiring socket-based serviceability.
ADM706RANZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- 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 Low
- Reset Timeout:
- 160ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADM706RANZ FAQ
1.How can I place an order for ADM706RANZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM706RANZ 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 ADM706RANZ reliable?
The price and inventory of ADM706RANZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM706RANZ is usually 5 days.
3.What payment methods are accepted for ADM706RANZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM706RANZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM706RANZ?
ADM706RANZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM706RANZ 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 ADM706RANZ?
For technical support, including ADM706RANZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM706RANZ requirements.
6.How does Aetrix verify that ADM706RANZ is sourced from the original manufacturer or authorized distributors?
All ADM706RANZ 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 ADM706RANZ meets industry standards.
7.What is the process for return or replacement of ADM706RANZ?
All ADM706RANZ units undergo pre-shipment inspection (PSI). If there is an issue with ADM706RANZ, 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 ADM706RANZ part is unused and in its original packaging.
Return procedure for ADM706RANZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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