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Analog Devices Inc. ADM707ARZ-REEL
- Part No.:
- ADM707ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADM707ARZ-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,891
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Product details
Overview
ADM707ARZ-REEL from Analog Devices is a precision 5 V microprocessor supervisory circuit with active-high reset output, 4.65 V supply voltage monitor threshold, 200 ms reset pulse width, and power-fail comparator (PFI/PFO) for early brownout warning-used in industrial controllers to ensure deterministic boot sequencing and safe shutdown during voltage sag.
For engineers reviewing the ADM707ARZ-REEL datasheet, ADM707ARZ-REEL pinout, ADM707ARZ-REEL application, or ADM707ARZ-REEL equivalent, key selection criteria include guaranteed RESET validity down to 1 V VCC, debounced manual reset input (MR), absence of watchdog timer, SOIC-8 packaging, and compatibility with active-high reset logic architectures.
Technical Context
The ADM707ARZ-REEL implements a fixed 4.65 V precision voltage monitor with 40 mV hysteresis to detect VCC brownout conditions and assert RESET. Its internal reset generator holds RESET high for 200 ms after VCC rises above threshold or MR deasserts, ensuring stable processor initialization.
It integrates a dedicated 1.25 V reference-based power-fail comparator with PFI input and open-drain PFO output, enabling external monitoring of auxiliary supplies or preregulator rails. The MR input is TTL/CMOS-compatible, internally debounced, and pulled up with 250 µA current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.65 V ±150 mV - triggers reset when 5 V rail drops below this level, with hysteresis preventing chatter near threshold |
| Reset Pulse Width | 200 ms typ - ensures sufficient time for microprocessor power stabilization and internal state clearing at power-up |
| Supply Current | 190 µA typ - enables low-power operation in battery-backed or energy-sensitive embedded systems |
| VCC Validity Range | 1.0 V to 5.5 V - guarantees functional RESET assertion even during deep brownout or slow power ramp-up |
| PFI Threshold | 1.25 V ±50 mV - sets trip point for external power-fail detection via resistive divider on auxiliary supply |
| MR Input Pull-Up | 250 µA - eliminates need for external pull-up resistor; supports direct switch or logic-level reset sources |
| RESET Output Type | Active-high push-pull - directly interfaces with processors requiring high-true reset without external inversion |
Pinout & Package
ADM707ARZ-REEL is housed in an 8-lead SOIC_N (R-8) package per JEDEC MS-012-AA, with 1.27 mm pitch, 4.90 mm × 3.90 mm body, and 1.75 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (MR) | Manual Reset Input | TTL/CMOS-compatible, debounced, internally pulled up to VCC with 250 µA - accepts switch closure or logic-low signal to force reset |
| 2 (VCC) | Power Supply Input | 5 V nominal supply pin; requires 0.1 µF decoupling capacitor to GND for noise immunity |
| 3 (GND) | Ground Reference | 0 V return path for all internal circuits and output drivers |
| 4 (PFI) | Power-Fail Input | Noninverting input to 1.25 V comparator; monitors auxiliary supply via external resistor divider |
| 5 (PFO) | Power-Fail Output | Open-drain output that goes low when PFI < 1.25 V - used for early warning interrupt or secondary reset trigger |
| 6 (NC) | No Connect | Internally unconnected; must remain floating or tied to GND (not VCC) |
| 7 (RESET) | Active-High Reset Output | Push-pull output asserted high during reset condition; sinks 1.2 mA or sources 800 µA |
| 8 (RESET) | Active-Low Reset Output | Complementary open-drain output asserted low during reset; sinks 3.2 mA |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RESET down to 1 V VCC | Ensures fail-safe microprocessor hold-down during deep undervoltage events, eliminating risk of undefined execution |
| Dual-reset outputs (active-high + active-low) | Supports mixed-logic systems and legacy processors requiring either polarity without external inverters or level shifters |
| Integrated 1.25 V power-fail comparator | Enables predictive shutdown by monitoring preregulator or backup supply voltage before main VCC collapse |
| Debounced MR input with 250 µA pull-up | Eliminates external RC debounce network and pull-up resistor, reducing BOM count and PCB area |
| SOIC-8 RoHS-compliant packaging | Standard surface-mount footprint compatible with automated assembly and reflow processes |
Applications
| Industrial PLC I/O Module | Medical Infusion Pump Controller |
|---|---|
Use Scenario: Monitors 5 V system rail and auxiliary 12 V pump motor supply to prevent erratic actuation during voltage instability. IC Role / Device Role / Timing Role: Supervisory IC providing synchronized active-high RESET to ARM Cortex-M4 MCU and PFO-triggered firmware interrupt for graceful motor stop. Use Value: Prevents unintended syringe drive motion during brownout by holding MCU in reset until both rails stabilize above thresholds. | Use Scenario: Ensures deterministic boot and runtime fault response in battery-powered infusion device with dual-supply architecture. IC Role / Device Role / Timing Role: Primary reset supervisor asserting RESET at power-on and generating PFO interrupt upon battery voltage decay below 3.3 V threshold. Use Value: Enables 200 ms reset hold time for full RAM initialization and allows 100+ ms warning window before battery cutoff. |
| Telecom Remote Terminal Unit | Automotive Body Control Module (BCM) |
Use Scenario: Secures reliable startup and brownout recovery in outdoor-mounted RTU exposed to wide temperature and supply variation. IC Role / Device Role / Timing Role: Voltage monitor and reset generator interfacing with TI MSP430F5xx MCU via active-high RESET and PFO-linked watchdog escalation. Use Value: Maintains valid RESET assertion down to 1 V VCC, ensuring MCU remains held during cold-cranking dips below 4.5 V. | Use Scenario: Provides fail-safe reset coordination between 5 V microcontroller and CAN transceiver during vehicle battery load-dump transients. IC Role / Device Role / Timing Role: Dual-output supervisor delivering simultaneous active-high RESET to MCU and active-low RESET to TJA1042 transceiver via isolated driver. Use Value: Eliminates timing skew between MCU and communication peripheral resets, preventing bus arbitration errors at power-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX707CSA+ | 4.65 V reset threshold, 200 ms timeout, active-high RESET, no watchdog - same SOIC-8 pinout but lacks PFI/PFO comparator | Cannot monitor auxiliary supplies; suitable only for single-rail reset supervision | Select when power-fail warning is unnecessary and cost minimization is critical |
| TPS3808G33DBVR | 3.3 V reset threshold, adjustable delay, push-pull RESET, no PFI/PFO - different threshold and no auxiliary monitoring capability | Designed for 3.3 V systems; incompatible with 5 V VCC supervision without external scaling | Select only for 3.3 V domains; requires redesign for 5 V use |
Compared with MAX707CSA+ and TPS3808G33DBVR, the ADM707ARZ-REEL uniquely combines 5 V supervision, active-high reset, and integrated PFI/PFO functionality in a drop-in SOIC-8 package-making it the only option among the three that supports both primary rail monitoring and predictive auxiliary supply failure detection.
Availability
ADM707ARZ-REEL is available at Aetrix Electronics and suitable for industrial PLCs, medical infusion pumps, telecom remote terminals, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM707ARZ-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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control applications.
The ADM707ARZ-REEL belongs to Analog Devices' microprocessor supervisory product line, engineered specifically for deterministic power-on reset, brownout protection, and auxiliary supply monitoring in mission-critical embedded systems.
FAQ
What is the reset threshold voltage for the ADM707ARZ-REEL?
The ADM707ARZ-REEL has a fixed reset threshold of 4.65 V with ±150 mV tolerance and 40 mV hysteresis. This value is factory-trimmed and specified over the full industrial temperature range (−40°C to +85°C). The ADM707ARZ-REEL asserts RESET when VCC falls below this threshold and holds it active for 200 ms after VCC recovers above threshold.
Does the ADM707ARZ-REEL include a watchdog timer function?
No, the ADM707ARZ-REEL does not include a watchdog timer. It is part of the ADM707/ADM708 family, which omits the WDI and WDO pins present in the ADM705/ADM706 variants. The ADM707ARZ-REEL provides only voltage monitoring, manual reset, and power-fail comparator functions-making it suitable for applications where software supervision is handled externally.
What is the purpose of the PFI and PFO pins on the ADM707ARZ-REEL?
The PFI (Power-Fail Input) pin connects to a resistive divider monitoring an auxiliary supply, comparing it against an internal 1.25 V reference. When PFI voltage drops below 1.25 V, the PFO (Power-Fail Output) pin goes low to signal impending failure. This enables early-warning interrupts or secondary reset generation. The ADM707ARZ-REEL uses this feature to extend supervision beyond the main VCC rail.
Can the ADM707ARZ-REEL operate with VCC below 4.65 V and still generate a valid reset signal?
Yes-the ADM707ARZ-REEL guarantees valid RESET assertion down to VCC = 1.0 V. Its internal circuitry remains functional and drives RESET high (for active-high output) or low (for active-low output) even during deep brownout. This ensures the microprocessor stays held in reset until power fully collapses, preventing undefined behavior. The ADM707ARZ-REEL specification explicitly confirms this capability in its absolute minimum operating voltage rating.
What package type and lead count does the ADM707ARZ-REEL use?
The ADM707ARZ-REEL uses an 8-lead SOIC_N (Small Outline Integrated Circuit, narrow) package designated R-8 per JEDEC MS-012-AA. It features 1.27 mm lead pitch, 4.90 mm × 3.90 mm body dimensions, and RoHS-compliant matte tin lead finish. The "Z" suffix indicates lead-free compliance, and "REEL" denotes tape-and-reel packaging for automated assembly.
ADM707ARZ-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:
- 4.65V
- Output:
- Push-Pull, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 160ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADM707ARZ-REEL FAQ
1.How can I place an order for ADM707ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM707ARZ-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 ADM707ARZ-REEL reliable?
The price and inventory of ADM707ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM707ARZ-REEL is usually 5 days.
3.What payment methods are accepted for ADM707ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM707ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM707ARZ-REEL?
ADM707ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM707ARZ-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 ADM707ARZ-REEL?
For technical support, including ADM707ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM707ARZ-REEL requirements.
6.How does Aetrix verify that ADM707ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADM707ARZ-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 ADM707ARZ-REEL meets industry standards.
7.What is the process for return or replacement of ADM707ARZ-REEL?
All ADM707ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM707ARZ-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 ADM707ARZ-REEL part is unused and in its original packaging.
Return procedure for ADM707ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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