My Inquiry
My Account
Analog Devices Inc. ADM706RAN
- Part No.:
- ADM706RAN
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ADM706RAN.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,978
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM706RAN 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, 100 µA quiescent current, and integrated watchdog timer-designed for reliable power-on, brownout, and software-failure detection in embedded control systems.
For engineers reviewing the ADM706RAN datasheet, ADM706RAN pinout, ADM706RAN application, or ADM706RAN equivalent, this page delivers verified specifications, functional context, package mapping, real-world use cases, and validated alternative options for industrial microcontroller reset management.
Technical Context
The ADM706RAN implements a precision bandgap-based voltage reference (2.63 V ±40 mV) to monitor VCC supply integrity, asserting RESET when VCC drops below threshold and holding it low for 200 ms after recovery. Its internal watchdog timer triggers WDO low if WDI input fails to toggle within 1.6 sec, supporting fail-safe microprocessor supervision.
A dedicated 1.25 V power-fail comparator monitors external supplies via PFI, driving PFO low on undervoltage-enabling early warning of battery depletion or auxiliary rail failure. The MR input is internally debounced and pulled up with 70 µA, compatible with TTL/CMOS logic or mechanical switches.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63 V ±40 mV - ensures reliable reset assertion at nominal 3 V supply with margin for tolerance and drift |
| Reset Pulse Width | 200 ms - guarantees sufficient hold time for microprocessor initialization and clock stabilization |
| Quiescent Current | 100 µA at VCC < 3.6 V - enables long-term operation in battery-backed or low-power systems |
| Watchdog Timeout | 1.6 sec - provides robust software activity monitoring without excessive sensitivity to timing jitter |
| Valid RESET Down to | VCC = 1 V - maintains deterministic reset state during deep brownout or controlled power-down sequences |
| Power-Fail Threshold | 1.25 V on PFI - supports accurate monitoring of secondary rails (e.g., 5 V, 12 V) via resistive divider |
| MR Input Pull-Up | 70 µA - eliminates need for external pull-up while ensuring clean TTL/CMOS-compatible switching |
Pinout & Package
ADM706RAN is housed in an 8-lead narrow-body PDIP (N-8) package with 0.3-inch body width and standard DIP lead spacing. Pin 1 is marked with a notch or dot; leads are numbered counterclockwise from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Manual Reset Input | Debounced active-low input; internally pulled up with 70 µA; triggers 200 ms RESET assertion when driven below 0.6 V |
| 2 VCC | Power Supply Input | Primary supply rail (2.7–5.5 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 Input | Noninverting input to 1.25 V comparator; monitors external supply via resistor divider; connect to GND if unused |
| 5 PFO | Power-Fail Output | Active-low open-drain output signaling PFI undervoltage; sinks ≥1.2 mA at VCC < 3.6 V |
| 6 WDI | Watchdog Input | Edge-sensitive input; any transition clears 1.6 sec timer; accepts pulses as narrow as 50 ns at VCC = 5 V |
| 7 RESET | Reset Output | Active-low push-pull output; drives low for 200 ms on power-up/brownout/MR assert; valid down to VCC = 1 V |
| 8 WDO | Watchdog Output | Active-low push-pull output; goes low on WDI timeout or VCC < reset threshold; resets only on WDI edge or VCC recovery |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.63 V reset threshold | ±40 mV tolerance ensures consistent reset behavior across temperature (−40°C to +85°C) and supply variation |
| Guaranteed RESET validity to 1 V VCC | Enables fail-safe shutdown sequencing even during severe brownout-no external pull-down required |
| Integrated 1.6 sec watchdog timer | Eliminates need for external timing components; supports software health-check without CPU overhead |
| Dedicated 1.25 V power-fail comparator | Allows independent monitoring of backup rails or battery voltage without sharing reset threshold resources |
| Internally debounced MR input | Removes requirement for external RC filtering or firmware debounce logic-reduces BOM and layout complexity |
Applications
| Industrial PLC Control | Medical Diagnostic Handheld |
|---|---|
|
Use Scenario: Programmable logic controller executing cyclic safety routines in factory automation. IC Role / Device Role / Timing Role: Supervises 3.3 V core supply and asserts RESET on brownout; feeds WDI with periodic GPIO toggle; triggers PFO on 5 V I/O rail sag. Use Value: Prevents unsafe state transitions during voltage instability; enables automatic watchdog recovery without operator intervention. |
Use Scenario: Portable ultrasound device powered by rechargeable Li-ion battery with dual 3.3 V and 5 V rails. IC Role / Device Role / Timing Role: Monitors main 3.3 V processor supply (2.63 V threshold); uses PFI to detect battery voltage drop below 3.2 V via divider; asserts RESET before data corruption. Use Value: Ensures deterministic shutdown before battery cutoff, preserving calibration data and preventing firmware corruption. |
| Smart Energy Meter | Ruggedized Data Logger |
|
Use Scenario: ANSI C12.22-compliant meter operating in wide-temperature outdoor environments. IC Role / Device Role / Timing Role: Provides cold-start reset during AC power restoration; MR tied to tamper-detection switch; PFO linked to supercap backup voltage monitor. Use Value: Guarantees secure boot after power interruption and validates backup energy availability before measurement resumption. |
Use Scenario: Environmental sensor node logging temperature/humidity in remote locations with intermittent solar charging. IC Role / Device Role / Timing Role: Supervises 3 V regulator output; WDI toggled by MCU watchdog ISR; PFI monitors 12 V battery via 10:1 divider for low-voltage alert. Use Value: Extends operational lifetime by enabling graceful sleep mode entry prior to brownout and triggering backup storage flush. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX706RCPA+ | Same 2.63 V reset threshold, 200 ms reset pulse, and active-low RESET; lacks integrated watchdog timer and PFI/PFO comparator | Suitable where only basic reset supervision is needed; not viable for systems requiring power-fail warning or software stall detection | Select MAX706RCPA+ only if watchdog and power-fail features are unused-reduces cost but removes critical safety layers |
| TPS3808G12DBVR | Adjustable reset threshold (via external resistor), 200 ms delay, 1.8 µA quiescent current; no watchdog or PFI inputs | Better suited for ultra-low-power battery systems; requires external components for threshold setting and lacks dual-supply monitoring capability | Choose TPS3808G12DBVR for extended battery life in non-safety-critical applications; avoid when PFI-based early-warning or WDI-based software supervision is required |
Compared with ADM706RAN, MAX706RCPA+ offers identical reset behavior but omits watchdog and power-fail functions-making it a reduced-feature alternative-while TPS3808G12DBVR trades integration for ultra-low quiescent current and adjustable threshold, sacrificing PFI/WDO functionality entirely.
Availability
ADM706RAN is available at Aetrix Electronics and suitable for industrial PLC control, medical handheld diagnostics, smart energy metering, and ruggedized data logging requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM706RAN 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 ADM706RAN belongs to Analog Devices' microprocessor supervisory IC product line, engineered specifically for deterministic power-up, brownout, and software-failure detection in mission-critical embedded systems.
FAQ
What is the reset threshold voltage of the ADM706RAN?
The ADM706RAN has a precision reset threshold of 2.63 V, with a typical tolerance of ±40 mV. This value is fixed and factory-trimmed, ensuring consistent reset assertion across the full industrial temperature range (−40°C to +85°C) and supply voltages from 2.7 V to 5.5 V. The ADM706RAN uses an internal bandgap reference to maintain accuracy without external components.
Does the ADM706RAN include a watchdog timer function?
Yes, the ADM706RAN integrates a watchdog timer with a nominal timeout period of 1.6 seconds. It monitors the WDI input for transitions and asserts WDO low if no edge occurs within that window. The timer resets on every WDI edge (high-to-low or low-to-high) and is also cleared during RESET assertion. This functionality is confirmed in the ADM706RAN's functional block diagram and timing specifications.
Can the ADM706RAN monitor a secondary power supply?
Yes, the ADM706RAN can monitor a secondary supply using its PFI (Power-Fail Input) pin, which connects to an internal 1.25 V comparator. By configuring a resistive divider between the secondary rail and GND, the voltage at PFI drops below 1.25 V when the monitored supply falls out of tolerance-causing PFO to go low. This feature is explicitly documented in the ADM706RAN datasheet's Applications Information section.
What package type is used for the ADM706RAN?
The ADM706RAN is supplied in an 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, and it is rated for operation from −40°C to +85°C. This through-hole package is specified in the official Analog Devices ordering guide for the ADM706RAN part number.
Is the ADM706RAN reset output active-high or active-low?
The ADM706RAN features an active-low RESET output, as confirmed by its "R" suffix designation and datasheet specifications. When VCC drops below 2.63 V or MR is asserted, RESET is driven low for 200 ms. This behavior is distinct from the ADM706PAN (active-high) and matches the ADM706R family's standardized output polarity for compatibility with common microprocessor reset inputs.
ADM706RAN 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 Low
- Reset Timeout:
- 160ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ADM706RAN FAQ
1.How can I place an order for ADM706RAN through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM706RAN 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 ADM706RAN reliable?
The price and inventory of ADM706RAN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM706RAN is usually 5 days.
3.What payment methods are accepted for ADM706RAN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM706RAN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM706RAN?
ADM706RAN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM706RAN 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 ADM706RAN?
For technical support, including ADM706RAN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM706RAN requirements.
6.How does Aetrix verify that ADM706RAN is sourced from the original manufacturer or authorized distributors?
All ADM706RAN 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 ADM706RAN meets industry standards.
7.What is the process for return or replacement of ADM706RAN?
All ADM706RAN units undergo pre-shipment inspection (PSI). If there is an issue with ADM706RAN, 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 ADM706RAN part is unused and in its original packaging.
Return procedure for ADM706RAN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM706RAN 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…
