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Analog Devices Inc./Maxim Integrated ADPL63164AKA31+T
- Part No.:
- ADPL63164AKA31+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-8
- Datasheet:
-
ADPL63164AKA31+T.pdf
- Description:
- RESET CIRCUITS FOR THE MID-MARKE
- Quantity:
- Payment:
- Shipping:
Inventory:4,490
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Product details
Overview
ADPL63164AKA31+T from Analog Devices is a low-power microprocessor supervisory IC that monitors single/dual supply voltages (1.575V–5V), provides capacitor-adjustable reset and watchdog timeout delays, and features ±2% factory-trimmed 3.075V reset threshold (suffix "31"), open-drain active-low RESET output, and -40°C to +125°C operation - used in automotive and medical equipment for brownout and software fault recovery.
For engineers reviewing the ADPL63164AKA31+T datasheet, ADPL63164AKA31+T pinout, ADPL63164AKA31+T application, or ADPL63164AKA31+T equivalent, key selection criteria include its 3.075V factory-trimmed VTH, 4μA typical supply current at 3.3V, 7.59ms typical reset timeout with 1500pF CSRT, 128× extended watchdog mode, and SOT23-8 package compatibility with space-constrained embedded controllers.
Technical Context
The ADPL63164AKA31+T implements dual-voltage monitoring via internal VCC comparator (3.075V threshold) and external resistor-divider on RESET IN pin, enabling independent supervision of two rails. Its reset assertion logic combines voltage-fall detection, manual reset input, and watchdog fault response - all cleared by rising-edge transitions on WDI or WDS.
Reset and watchdog timing rely on linear ramp-current charging of external capacitors (CSRT/CSWT) against fixed 1.235V thresholds, yielding predictable timeout periods governed by t = 4.94×10⁶ × C. The WDS pin selects between normal (tWD) and extended (128×tWD) watchdog modes, with mode change clearing the timer.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.075V ±2% (factory-trimmed, suffix "31") - ensures reliable power-on reset for 3.3V systems without external resistors. |
| Supply Current | 4.5–10µA at VCC ≤ 3.3V - enables battery-powered operation for >10-year runtime in portable controllers. |
| Reset Timeout | 5.692–9.487ms (CSRT = 1500pF) - accommodates slow-rising microprocessor clocks and PLL lock times. |
| Watchdog Timeout | 5.692–9.487ms (normal) or 728.6–1214.4ms (extended, 128×) - supports both fast-boot firmware and long-loop safety-critical tasks. |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and industrial motor-control environments. |
| RESET Output | Open-drain, VOL ≤ 0.3V @ ISINK = 1.2mA - interfaces directly with 1.8V–5V microcontroller reset inputs using external pull-up. |
| VCC Range | 1.2V to 5.5V - guarantees valid RESET state during deep brownout down to 1.2V, preventing undefined MCU behavior. |
Pinout & Package
ADPL63164AKA31+T is housed in an 8-pin SOT23 package (package code K8+5A, outline 21-0078), with 0.65mm pitch, 2.9mm × 1.6mm footprint, and RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET IN | Adjustable reset comparator input | Accepts external resistor-divider to monitor secondary voltage rail (e.g., 1.8V core); threshold = 1.235V × (R1+R2)/R2. |
| 2 - SWT | Watchdog timeout capacitor terminal | Connects to ground via CSWT to set base watchdog period; shorting to GND disables watchdog function. |
| 3 - SRT | Reset timeout capacitor terminal | Connects to ground via CSRT to set reset pulse duration; determines minimum reset hold time after power recovery. |
| 4 - GND | Analog/digital ground reference | Common return path for internal comparators, ramp generators, and output driver; must be low-impedance. |
| 5 - WDS | Watchdog mode select | Pull to GND for normal mode (tWD); pull to VCC for extended mode (128×tWD); transition clears watchdog timer. |
| 6 - WDI | Watchdog input trigger | Falling edge resets watchdog counter; pulse width ≥300ns required; floating not allowed (100kΩ to GND recommended). |
| 7 - RESET | Open-drain active-low reset output | Sinks current to assert reset on MCU; requires external pull-up; remains valid down to VCC = 1.2V. |
| 8 - VCC | Power supply input | Supplies internal circuitry and powers VCC monitor comparator; also serves as reference for RESET IN divider bias. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage supervision | Simultaneously monitors VCC (3.075V) and external rail via RESET IN - eliminates need for second supervisor in multi-rail systems. |
| Capacitor-adjustable timing | CSRT and CSWT set precise reset/watchdog durations (ms to seconds) without trimming resistors or firmware changes. |
| 128× watchdog extension | WDS pin enables one-pin selection of extended timeout - supports long-latency firmware routines without increasing capacitor size. |
| Transient-immune reset logic | Rejects VCC glitches ≤50µs at 100mV overdrive - prevents spurious resets in noisy automotive or industrial power environments. |
| Ultra-low quiescent current | 4µA typical at 3.3V - extends battery life in portable medical sensors and remote IoT nodes. |
Applications
| Automotive Engine Control Unit | Portable Medical Glucose Monitor |
|---|---|
Use Scenario: Monitors 3.3V ECU microcontroller supply and 5V sensor rail during cold cranking, where battery dips to 6V with high ripple. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail falls below threshold; uses 1500pF CSRT for 7.6ms hold time to ensure full MCU initialization. Use Value: Prevents corrupted CAN message transmission during voltage sag by guaranteeing clean reset before firmware execution resumes. | Use Scenario: Powers on/off cycle triggered by button press in a disposable glucose meter with coin-cell battery. IC Role / Device Role / Timing Role: Provides power-on reset and software watchdog; WDS tied to VCC for extended 728ms timeout to cover full self-test sequence. Use Value: Ensures complete ADC calibration and sensor warm-up completes before measurement begins - eliminating false low-glucose alarms. |
| Industrial PLC I/O Module | Battery-Powered Smart Thermostat |
Use Scenario: Supervises 2.5V FPGA configuration voltage and 3.3V communication interface in a DIN-rail mounted controller exposed to 85°C ambient. IC Role / Device Role / Timing Role: Uses RESET IN pin with resistor divider to monitor 2.5V rail; operates across full -40°C to +125°C range with guaranteed timing stability. Use Value: Maintains deterministic reset behavior despite thermal drift - critical for fail-safe shutdown of motor drives during overtemperature events. | Use Scenario: Long-term deployment in HVAC systems powered by AA batteries, requiring >5-year shelf life and periodic BLE wake-ups. IC Role / Device Role / Timing Role: Delivers 4µA supply current and open-drain RESET compatible with 1.8V BLE SoC; CSRT = 100pF yields 506µs reset pulse. Use Value: Minimizes system leakage during sleep mode while ensuring reliable wake-from-reset synchronization with wireless stack initialization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6369KA29+T | Fixed 2.93V reset threshold, no adjustable RESET IN, 1.6µA ICC at 3.3V | Lacks dual-rail monitoring; suited only for single-supply systems with tighter current budget | Select when ultra-low ICC (<2µA) outweighs need for external rail supervision. |
| TPS3808G33DBVR | Fixed 3.3V threshold, no watchdog extension mode, 16µA ICC at 3.3V | Offers push-pull RESET but no WDS-controlled 128× timeout scaling | Select when simple 3.3V-only reset suffices and extended watchdog timing is unnecessary. |
Compared with MAX6369KA29+T and TPS3808G33DBVR, ADPL63164AKA31+T uniquely supports dual-voltage supervision, 128× scalable watchdog timing, and sub-5µA operation - making it optimal for safety-critical, multi-rail, and battery-sensitive designs where flexibility and precision timing are mandatory.
Availability
ADPL63164AKA31+T is available at Aetrix Electronics and suitable for automotive engine control units, portable medical devices, industrial PLC modules, battery-powered thermostats, and intelligent instrumentation requiring stable component supply across extended temperature ranges.
Supply support for ADPL63164AKA31+T 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision sensing, power management, and connectivity.
The ADPL63164 product line delivers configurable microprocessor supervisors with capacitor-adjustable timing and dual-rail monitoring - designed specifically for automotive, medical, and industrial systems demanding robust power-on reset and software fault recovery.
FAQ
What is the factory-trimmed reset threshold voltage of the ADPL63164AKA31+T?
The ADPL63164AKA31+T has a factory-trimmed reset threshold voltage of 3.075V ±2%, indicated by the "31" suffix in its part number per Table 1 of the datasheet. This value is laser-trimmed during production and applies to the internal VCC monitor; the RESET IN pin retains its fixed 1.235V comparator threshold for external rail supervision.
How do I calculate the capacitor value needed for a 10ms reset timeout with the ADPL63164AKA31+T?
To achieve a 10ms reset timeout using the ADPL63164AKA31+T, connect a capacitor CSRT between pin 3 (SRT) and GND. Use the formula CSRT = tRP / 4.94×10⁶, where tRP = 0.01 seconds. This yields CSRT ≈ 2024pF - a standard 2000pF or 2200pF ceramic capacitor (low-leakage, <10nA) is recommended for accuracy and stability.
Can the ADPL63164AKA31+T monitor two different supply voltages simultaneously?
Yes, the ADPL63164AKA31+T supports true dual-voltage monitoring: it supervises VCC (at 3.075V threshold) internally and an external voltage rail via the RESET IN pin, which compares against a fixed 1.235V threshold. By connecting a resistor divider to RESET IN, users can scale any monitored voltage (e.g., 1.8V, 2.5V) to match this reference - enabling independent fault detection on two rails with a single IC.
What is the maximum watchdog timeout achievable with the ADPL63164AKA31+T and how is it configured?
The ADPL63164AKA31+T achieves a maximum watchdog timeout of 1214.4ms (≈1.2 seconds) when operating in extended mode with CSWT = 1500pF. This is configured by connecting pin 5 (WDS) to VCC, which multiplies the base timeout (9.487ms) by 128×. For longer intervals, increase CSWT - e.g., 0.1µF yields ~65s in extended mode, per the Typical Operating Characteristics graph.
Does the ADPL63164AKA31+T remain functional during deep brownout conditions?
Yes, the ADPL63164AKA31+T guarantees valid RESET output behavior down to VCC = 1.2V, as specified in the Electrical Characteristics table. Its internal circuitry continues to monitor VCC and RESET IN, assert RESET correctly, and maintain timing accuracy even as supply voltage collapses - ensuring safe microprocessor halt before logic corruption occurs in battery-depleted or faulted systems.
ADPL63164AKA31+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.075V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 5.692ms Minimum
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
ADPL63164AKA31+T FAQ
1.How can I place an order for ADPL63164AKA31+T through Aetrix?
Please submit a Request for Quotation (RFQ) for ADPL63164AKA31+T 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 ADPL63164AKA31+T reliable?
The price and inventory of ADPL63164AKA31+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADPL63164AKA31+T is usually 5 days.
3.What payment methods are accepted for ADPL63164AKA31+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADPL63164AKA31+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADPL63164AKA31+T?
ADPL63164AKA31+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADPL63164AKA31+T 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 ADPL63164AKA31+T?
For technical support, including ADPL63164AKA31+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADPL63164AKA31+T requirements.
6.How does Aetrix verify that ADPL63164AKA31+T is sourced from the original manufacturer or authorized distributors?
All ADPL63164AKA31+T 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 ADPL63164AKA31+T meets industry standards.
7.What is the process for return or replacement of ADPL63164AKA31+T?
All ADPL63164AKA31+T units undergo pre-shipment inspection (PSI). If there is an issue with ADPL63164AKA31+T, 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 ADPL63164AKA31+T part is unused and in its original packaging.
Return procedure for ADPL63164AKA31+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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