My Inquiry
My Account
Analog Devices Inc. ADM706ARZ-REEL
- Part No.:
- ADM706ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADM706ARZ-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,601
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM706ARZ-REEL from Analog Devices is a low-cost microprocessor supervisory circuit designed for 5 V supply monitoring in embedded systems. It provides active-low reset output with 4.40 V threshold, 200 ms reset pulse width, 190 μA quiescent current, and integrated watchdog timer (1.60 sec timeout), used to ensure reliable power-up sequencing and stall detection in industrial controllers.
For engineers reviewing the ADM706ARZ-REEL datasheet, ADM706ARZ-REEL pinout, ADM706ARZ-REEL application, or ADM706ARZ-REEL equivalent, key selection criteria include reset threshold accuracy, guaranteed RESET validity down to 1 V VCC, manual reset debouncing, power-fail warning via PFI/PFO, and SOIC-8 package compatibility with automated assembly.
Technical Context
The ADM706ARZ-REEL implements a precision voltage monitor with 4.40 V ±150 mV threshold and 40 mV hysteresis, ensuring stable reset assertion during brownout conditions. Its internal watchdog timer resets on any WDI transition and times out after 1.60 sec if inactive, supporting fail-safe microprocessor supervision.
It integrates a 1.25 V reference-based power-fail comparator (PFI/PFO) for early warning of supply degradation or battery depletion, and features TTL/CMOS-compatible MR input with 250 μA internal pull-up and 150 ns minimum pulse width requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.40 V ±150 mV - triggers reset when 5 V supply drops below safe operating level for microprocessor core logic |
| Reset Pulse Width | 200 ms typical - ensures sufficient hold time for microprocessor power stabilization and clock lock |
| Quiescent Current | 190 μA - enables long-term battery-backed operation without significant drain |
| Watchdog Timeout | 1.60 sec - detects software hangs before critical system state corruption occurs |
| PFI Threshold | 1.25 V ±50 mV - allows configurable power-fail detection via external resistor divider for secondary supply monitoring |
| VCC Validity Range | 1.0 V to 5.5 V - guarantees RESET remains asserted and functional even during deep brownout or battery sag |
| MR Input Pull-Up | 250 μA - eliminates need for external pull-up resistor when interfacing with open-drain or mechanical switch sources |
Pinout & Package
ADM706ARZ-REEL is housed in an 8-lead SOIC_N (R-8) package, 3.90 mm × 4.90 mm body, 1.27 mm lead pitch, compliant with JEDEC MS-012-AA. Pin 1 is marked by beveled corner or dot; device orientation follows standard SOIC top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Manual Reset Input | TTL/CMOS-compatible debounced input; driven low to force reset; internally pulled up at 250 μA |
| 2 (VCC) | Power Supply Input | 5 V supply connection; requires 0.1 μF decoupling capacitor to GND for noise immunity |
| 3 (GND) | Ground Reference | 0 V 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 auxiliary supply via resistive divider |
| 5 (PFO) | Power-Fail Output | Active-low open-drain output signaling supply degradation or low-battery condition |
| 6 (WDI) | Watchdog Input | Three-level input; toggled by processor to prevent timeout; floating disables watchdog |
| 7 (RESET) | Reset Output | Active-low push-pull output; asserted for 200 ms on power-up, brownout, or MR activation |
| 8 (WDO) | Watchdog Output | Active-low open-drain output; goes low on timeout or VCC < 4.40 V; can drive MR for auto-reset |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET below 1 V VCC | Ensures microprocessor remains held in reset during full power collapse, preventing undefined states |
| Integrated watchdog timer | 1.60 sec timeout with WDI edge-triggered reset - eliminates need for external timing components |
| Power-fail comparator with PFI/PFO | 1.25 V reference enables monitoring of secondary supplies or battery voltage without external reference |
| Debounced MR input | 200 ms internal debounce eliminates contact bounce issues with mechanical reset switches |
| SOIC-8 RoHS-compliant packaging | R-8 footprint supports high-volume SMT assembly and reflow compatibility per JEDEC MS-012-AA |
Applications
| Industrial PLCs | Medical Diagnostic Equipment |
|---|---|
Use Scenario: Monitoring 5 V logic rail in programmable logic controller CPU modules during mains fluctuation or backup battery switchover. IC Role / Device Role / Timing Role: Supervisory IC providing power-on reset, brownout protection, and watchdog supervision of firmware execution. Use Value: Prevents spurious I/O writes and memory corruption during unstable supply transitions using guaranteed 1 V RESET validity and 200 ms pulse width. | Use Scenario: Ensuring deterministic boot sequence and runtime integrity in portable ultrasound imaging devices powered by Li-ion batteries. IC Role / Device Role / Timing Role: Dual-role supervisor: reset generator for ARM Cortex-M host MCU and low-battery warning via PFI monitoring of battery pack voltage. Use Value: Extends operational uptime by triggering graceful shutdown at 3.3 V battery level (via 1.25 V PFI divider), while maintaining reset assertion until VCC ≥ 4.40 V. |
| Telecom Line Cards | Smart Energy Meters |
Use Scenario: Securing FPGA configuration and DSP initialization in carrier-grade Ethernet line cards exposed to transient surges and hot-swap events. IC Role / Device Role / Timing Role: System-level supervisor coordinating power sequencing, watchdog health check, and fault reporting via PFO interrupt. Use Value: Eliminates configuration errors by enforcing 200 ms reset hold time post-power-up and detecting firmware stalls via WDI toggling every 1.60 sec. | Use Scenario: Maintaining data integrity and secure boot in ANSI C12.22-compliant electricity meters with tamper-detection circuitry and EEPROM logging. IC Role / Device Role / Timing Role: Critical reliability component enabling power-fail interrupt (PFO) for last-write-to-EEPROM and watchdog reset (WDO→MR) on firmware lockup. Use Value: Guarantees nonvolatile memory write completion before power loss using PFI-triggered interrupt and prevents meter freeze via autonomous watchdog-initiated reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX706CSA+ | 4.40 V reset threshold, 200 ms timeout, but no integrated PFI/PFO comparator; 1.6 μA max quiescent current | Lacks power-fail warning capability; suitable only where secondary supply monitoring is unnecessary | Select when lowest standby current is prioritized over dual-supply monitoring |
| TPS3808G33DBVR | 3.3 V reset threshold, adjustable watchdog (1.25 ms–10 sec), 1.8 μA quiescent current, no PFI input | Designed for 3.3 V systems; incompatible threshold for 5 V applications without level-shifting | Choose only for new 3.3 V designs requiring ultra-low IQ; not drop-in for ADM706ARZ-REEL |
Compared with MAX706CSA+ and TPS3808G33DBVR, the ADM706ARZ-REEL uniquely combines 5 V system compatibility, integrated power-fail warning (PFI/PFO), and watchdog supervision in a single SOIC-8 package-enabling consolidated BOMs and simplified layout for industrial 5 V microcontroller platforms.
Availability
ADM706ARZ-REEL is available at Aetrix Electronics and suitable for industrial PLCs, medical diagnostic equipment, telecom line cards, smart energy meters, and embedded controllers requiring stable component supply across extended temperature ranges.
Supply support for ADM706ARZ-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, headquartered in Norwood, MA, serving industrial, automotive, communications, and healthcare markets.
The ADM705/ADM706 family was engineered specifically for cost-sensitive, high-reliability 5 V microprocessor supervision-delivering precision reset thresholds, watchdog safety, and power-fail warning in minimal footprint packages.
FAQ
What is the reset threshold voltage of the ADM706ARZ-REEL and how is it specified?
The ADM706ARZ-REEL has a nominal reset threshold of 4.40 V, with a tolerance of ±150 mV (4.25 V to 4.50 V) over the full industrial temperature range (−40°C to +85°C). This value is guaranteed in the datasheet Table 1 under "Reset Threshold" for ADM706/ADM708 variants. The threshold is referenced to an internal bandgap, ensuring stability across voltage and temperature variations, and directly determines when the RESET output asserts during power-down or brownout events.
Does the ADM706ARZ-REEL support watchdog functionality, and how is it enabled?
Yes, the ADM706ARZ-REEL includes a fully integrated watchdog timer with a nominal timeout period of 1.60 sec. It is enabled by applying periodic transitions (high-to-low or low-to-high) to the WDI pin; absence of transitions beyond the timeout causes WDO to go low. The watchdog is automatically disabled if WDI is left floating or connected to a high-impedance source. No external components are required-timing is factory-trimmed and does not depend on external RC networks.
Can the ADM706ARZ-REEL monitor a second power supply, and what interface is used?
Yes, the ADM706ARZ-REEL can monitor a second supply using its dedicated PFI (Power-Fail Input) pin, which connects to the noninverting input of an internal 1.25 V comparator. A simple two-resistor divider scales the auxiliary supply voltage to match the 1.25 V threshold; when the scaled voltage falls below 1.25 V, PFO goes low. This enables early-warning detection of battery depletion or preregulator failure without additional ICs.
What is the minimum VCC voltage at which the ADM706ARZ-REEL guarantees valid RESET output?
The ADM706ARZ-REEL guarantees valid RESET output down to VCC = 1.0 V, as explicitly stated in the Features section and validated in Figure 6 of the datasheet. At 1 V, RESET remains low with a maximum VOL of 0.3 V (ISINK = 50 µA), ensuring the microprocessor stays in a known reset state during deep brownout. This specification exceeds most competing supervisors and is critical for battery-powered systems experiencing gradual voltage decay.
Is the ADM706ARZ-REEL pin-compatible with other members of the ADM705–ADM708 family?
Yes, the ADM706ARZ-REEL shares identical pinout and package (SOIC-8 R-8) with ADM705ARZ-REEL, ADM707ARZ-REEL, and ADM708ARZ-REEL. However, functional differences exist: ADM705/ADM706 include WDI/WDO pins, while ADM707/ADM708 replace WDI/WDO with NC and active-high RESET. Thus, ADM706ARZ-REEL is pin-compatible with ADM705ARZ-REEL but not functionally interchangeable with ADM707/ADM708 variants without circuit modification.
ADM706ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.4V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 160ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADM706ARZ-REEL FAQ
1.How can I place an order for ADM706ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM706ARZ-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 ADM706ARZ-REEL reliable?
The price and inventory of ADM706ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM706ARZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM706ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM706ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM706ARZ-REEL?
ADM706ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM706ARZ-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 ADM706ARZ-REEL?
For technical support, including ADM706ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM706ARZ-REEL requirements.
6.How does Aetrix verify that ADM706ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM706ARZ-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 ADM706ARZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM706ARZ-REEL?
All ADM706ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM706ARZ-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 ADM706ARZ-REEL part is unused and in its original packaging.
Return procedure for ADM706ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM706ARZ-REEL 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…
