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Analog Devices Inc. ADM6316BX30ARJZ-R7
- Part No.:
- ADM6316BX30ARJZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ADM6316BX30ARJZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,948
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Product details
Overview
ADM6316BX30ARJZ-R7 from Analog Devices is a supervisory circuit with integrated watchdog timer and manual reset input, designed for microprocessor supply voltage monitoring and code execution integrity assurance. It features a 3.0 V reset threshold (±2.5% over −40°C to +85°C), 20 ms minimum reset timeout, 102 ms typical watchdog timeout, push-pull active-low RESET output, and consumes ≤12 µA at 3.6 V - enabling reliable power-on reset and brownout recovery in portable embedded systems.
For engineers reviewing the ADM6316BX30ARJZ-R7 datasheet, ADM6316BX30ARJZ-R7 pinout, ADM6316BX30ARJZ-R7 application, or ADM6316BX30ARJZ-R7 equivalent, key selection criteria include its precise 3.0 V reset threshold, industrial temperature rating, 5-lead SOT-23 footprint, watchdog timeout compatibility with firmware strobe intervals, and push-pull active-low reset drive capability into microprocessor reset inputs.
Technical Context
The ADM6316BX30ARJZ-R7 implements a precision bandgap-based voltage reference with 40 ppm/°C temperature coefficient and 3 mV hysteresis to ensure stable reset assertion during VCC transients. Its watchdog detector clears on any WDI logic transition (≥50 ns pulse width) and times out after 102 ms (typical), requiring periodic firmware toggling to prevent unintended reset.
Reset generation is triggered by VCC falling below 3.0 V, MR pin assertion (active-low, 52 kΩ internal pull-up), or watchdog timeout - with reset held active for ≥20 ms after VCC recovery or MR release. The push-pull RESET output guarantees valid logic low (≤0.3 V at 1.2 mA sink) down to VCC = 1 V, supporting robust interface with modern low-voltage MCUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.0 V ±2.5% over −40°C to +85°C - ensures deterministic power-on reset at nominal 3.0 V rail without false triggering during thermal drift. |
| Reset Timeout | 20 ms minimum - provides sufficient hold time for microprocessor core and peripherals to stabilize post-power-up. |
| Watchdog Timeout | 102 ms typical - balances fault detection responsiveness with firmware execution margin for mid-speed MCU applications. |
| Supply Current | ≤12 µA at 3.6 V - enables integration into battery-powered devices with multi-year standby life. |
| RESET Output Type | Push-pull active-low - eliminates need for external pull-up resistor and supports direct connection to standard MCU reset pins. |
| Operating Temp | −40°C to +85°C - qualified for industrial and automotive under-hood environments where ambient thermal stress is present. |
| VCC Range | 1 V to 5.5 V - allows operation during deep brownout conditions and compatibility with 1.8 V–5 V system rails. |
Pinout & Package
ADM6316BX30ARJZ-R7 is housed in a 5-lead SOT-23 package (JEDEC MO-178-AA compliant), measuring 2.90 mm × 1.60 mm × 1.15 mm, with gull-wing leads and 0.95 mm lead pitch. Thermal resistance θJA is 270°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: RESET | Active-low push-pull reset output | Asserts logic low when VCC < 3.0 V, MR is pulled low, or watchdog times out; sinks up to 1.2 mA at VCC ≥ 2.7 V. |
| 2: GND | Ground reference | Primary return path for internal reference, reset driver, and watchdog comparator circuits. |
| 3: MR | Manual reset input (active-low) | Internal 52 kΩ pull-up ensures default high state; ≥1 µs low pulse forces reset; immune to <100 ns noise spikes. |
| 4: WDI | Watchdog input | Clears internal timer on any logic transition; floating disables watchdog; accepts 50 ns minimum pulses. |
| 5: VCC | Monitored supply voltage input | Input to internal voltage reference and reset comparator; also powers internal circuitry; valid down to 1 V. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed reset validity to VCC = 1 V | Ensures reliable reset assertion even during severe brownout, preventing MCU lockup in undervoltage states. |
| Power supply glitch immunity | Rejects fast transients (e.g., 100 mV overdrive for ≤8 µs at VTH = 2.93 V), eliminating spurious resets from switching noise. |
| Low quiescent current (≤12 µA) | Minimizes battery drain in always-on monitoring applications such as IoT edge nodes and portable medical devices. |
| Integrated MR pull-up (52 kΩ) | Reduces BOM count by eliminating external resistor; enables simple push-button reset with no additional components. |
| 40 ppm/°C reset threshold TC | Maintains tight voltage tolerance across industrial temperature range, critical for systems operating near reset threshold margins. |
Applications
| Industrial PLC Controller | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 3.3 V main supply in a DIN-rail mounted programmable logic controller subjected to wide ambient temperature swings and EMI-rich factory floor environments. IC Role / Device Role / Timing Role: Supervisory IC providing power-on reset, brownout protection, and watchdog supervision of real-time control firmware. Use Value: Prevents erratic I/O behavior during cold start and ensures automatic recovery from transient supply dips without operator intervention. | Use Scenario: Embedded in a handheld blood glucose meter powered by a single Li-ion cell, where supply voltage decays from 4.2 V to 3.0 V during discharge. IC Role / Device Role / Timing Role: Voltage supervisor asserting reset when battery drops below 3.0 V and watchdog resetting firmware if sensor readout loop hangs. Use Value: Guarantees measurement accuracy by forcing controlled restart before low-VCC analog front-end errors corrupt results. |
| Smart Energy Meter | Automotive Body Control Module |
Use Scenario: Used in a Class 0.5 electricity meter with isolated MCU, where mains-derived 3.3 V rail experiences ripple and surges during grid switching events. IC Role / Device Role / Timing Role: Reset generator and watchdog monitor ensuring deterministic boot sequence and continuous firmware health checking. Use Value: Eliminates cumulative metering errors caused by silent MCU hangs during long-term unattended operation. | Use Scenario: Integrated into a BCM managing door locks, lighting, and window controls, operating from a 12 V automotive battery regulated to 3.0 V. IC Role / Device Role / Timing Role: Supervisory circuit detecting battery undervoltage during cranking and resetting MCU after engine start stabilization. Use Value: Maintains functional safety by preventing undefined states during cold-cranking voltage sag (down to ~6 V battery, ~3.0 V LDO output). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LU30D2T | 3.0 V reset threshold, 20 ms reset timeout, open-drain active-low RESET, no watchdog timer | Lacks watchdog functionality; requires external RC or MCU-driven strobe for code integrity monitoring | Select when watchdog is unnecessary and open-drain output matches existing pull-up architecture. |
| TPS3808G30DBVR | 3.0 V reset threshold, 20 ms reset timeout, push-pull active-low RESET, no manual reset input | Omits MR pin; relies solely on VCC monitoring and optional external watchdog via separate IC | Choose when board space is constrained and manual reset is handled externally or omitted. |
Compared with MAX6316LU30D2T and TPS3808G30DBVR, the ADM6316BX30ARJZ-R7 uniquely integrates watchdog timer, manual reset, and push-pull output in a single 5-lead SOT-23 - reducing component count and enabling autonomous firmware recovery without layout or firmware redesign.
Availability
ADM6316BX30ARJZ-R7 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, smart energy meters, automotive body control modules, and battery-powered IoT endpoints requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM6316BX30ARJZ-R7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers and manufacturing facilities worldwide.
The ADM6316 family was developed specifically for microprocessor-based systems needing guaranteed power-on reset, brownout protection, and autonomous code execution monitoring - targeting industrial, medical, and automotive applications where reliability under voltage stress is non-negotiable.
FAQ
What is the exact reset threshold voltage of the ADM6316BX30ARJZ-R7?
The ADM6316BX30ARJZ-R7 has a nominal reset threshold of 3.00 V, specified as 2.925 V (min) to 3.075 V (max) at +25°C, and 2.925 V (min) to 3.075 V (max) over the full industrial temperature range of −40°C to +85°C. This corresponds to the "30" in the part number per Table 5 of the datasheet.
Does the ADM6316BX30ARJZ-R7 require an external pull-up resistor on the RESET pin?
No, the ADM6316BX30ARJZ-R7 features a push-pull active-low RESET output, which actively drives low and high states without external components. Unlike open-drain variants, it does not require a pull-up resistor - simplifying layout and reducing BOM count.
How does the watchdog timeout of the ADM6316BX30ARJZ-R7 map to the ordering code?
The "X" in ADM6316BX30ARJZ-R7 indicates the 102 ms typical watchdog timeout option (per Table 7), while "B" denotes the 20 ms minimum reset timeout and "30" specifies the 3.0 V reset threshold. The "Z" suffix confirms RoHS compliance and 25.6 sec watchdog option is *not* used here - only "X" applies.
Can the ADM6316BX30ARJZ-R7 operate reliably below 1.8 V supply?
Yes - the ADM6316BX30ARJZ-R7 is fully specified down to VCC = 1.0 V, with guaranteed RESET output validity (logic low ≤0.3 V at 100 µA sink) and functional reset assertion. This enables use in ultra-low-power systems during deep brownout, though full functionality resumes above 1.0 V.
What is the function of Pin 3 (MR) on the ADM6316BX30ARJZ-R7?
Pin 3 is the Manual Reset (MR) input - an active-low, internally pulled-up (52 kΩ) signal that forces a reset when driven low for ≥1 µs. It supports external push-button reset without external components and includes on-chip debounce and 100 ns glitch rejection for noise immunity in electrically noisy environments.
ADM6316BX30ARJZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
ADM6316BX30ARJZ-R7 FAQ
1.How can I place an order for ADM6316BX30ARJZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6316BX30ARJZ-R7 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 ADM6316BX30ARJZ-R7 reliable?
The price and inventory of ADM6316BX30ARJZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6316BX30ARJZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6316BX30ARJZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6316BX30ARJZ-R7 transactions.
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4.How is shipping managed for ADM6316BX30ARJZ-R7?
ADM6316BX30ARJZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6316BX30ARJZ-R7 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 ADM6316BX30ARJZ-R7?
For technical support, including ADM6316BX30ARJZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6316BX30ARJZ-R7 requirements.
6.How does Aetrix verify that ADM6316BX30ARJZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6316BX30ARJZ-R7 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 ADM6316BX30ARJZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6316BX30ARJZ-R7?
All ADM6316BX30ARJZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6316BX30ARJZ-R7, 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 ADM6316BX30ARJZ-R7 part is unused and in its original packaging.
Return procedure for ADM6316BX30ARJZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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