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Analog Devices Inc. ADM8617RCYAKSZ-RL7
- Part No.:
- ADM8617RCYAKSZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
ADM8617RCYAKSZ-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,970
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Product details
Overview
ADM8617RCYAKSZ-RL7 from Analog Devices is a low-voltage supervisory circuit with watchdog timer, designed for microprocessor supply monitoring and code execution integrity verification. It features a 2.63 V reset threshold, 140 ms reset timeout, 1.6 s watchdog timeout, open-drain active-low RESET output, and operates across −40°C to +85°C in portable embedded systems.
For engineers reviewing the ADM8617RCYAKSZ-RL7 datasheet, ADM8617RCYAKSZ-RL7 pinout, ADM8617RCYAKSZ-RL7 application, or ADM8617RCYAKSZ-RL7 equivalent, key selection criteria include reset threshold accuracy (±2.7% at 2.63 V), guaranteed RESET validity down to VCC = 1 V, glitch-immune transient rejection, and SC70 package compatibility with space-constrained PCB layouts.
Technical Context
The ADM8617RCYAKSZ-RL7 implements a precision bandgap reference-based voltage monitor with 40 ppm/°C temperature coefficient and 2 × VTH hysteresis. Its watchdog timer clears on any WDI logic transition (min. 50 ns pulse width) and asserts RESET if unattended for 1.6 s.
RESET assertion occurs when VCC falls below 2.63 V or WDI remains static beyond 1.6 s; deassertion follows a fixed 140 ms timeout after VCC rises above threshold. The open-drain output supports wired-OR configurations and level-shifting with external pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63 V ±2.7% - sets precise brownout detection point for 2.7–3.3 V supply rails |
| Reset Timeout | 140 ms min - ensures stable power-up delay before releasing microprocessor from reset |
| Watchdog Timeout | 1.6 s typ - provides sufficient margin for firmware watchdog strobe intervals in real-time applications |
| Supply Current | 5 µA typ at 3.6 V - enables battery-powered operation for >10-year shelf life in IoT sensors |
| Operating Temp | −40°C to +85°C - qualified for industrial control and automotive under-hood environments |
| RESET Output | Open-drain active-low - allows flexible pull-up voltage selection and multi-device reset bus sharing |
| VCC Range | 1 V to 5.5 V - guarantees functional RESET assertion even during deep brownout conditions |
Pinout & Package
ADM8617RCYAKSZ-RL7 is housed in a 4-lead SC70 (KS-4) package measuring 2.20 mm × 1.35 mm × 0.90 mm, optimized for high-density portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for internal reference and output stage; must be low-impedance connection to system ground plane |
| RESET (Pin 2) | Active-low open-drain output | Drives low during undervoltage or watchdog timeout; requires external pull-up for logic-high state |
| WDI (Pin 3) | Watchdog input | Edge-sensitive trigger; toggling within 1.6 s prevents reset; floating disables watchdog function |
| VCC (Pin 4) | Monitored supply input | Primary power source and voltage sense node; supports 1 V to 5.5 V operation with glitch immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 2.63 V with ±2.7% tolerance and 40 ppm/°C drift - eliminates need for external trimming in 3.3 V systems |
| Glitch-immune monitoring | Detects transients ≥100 mV below VTH only if sustained >8 µs - prevents false resets from switching noise |
| Low-power operation | 5 µA typical supply current at 3.6 V - extends battery life in always-on wearable devices |
| VCC = 1 V RESET validity | Guaranteed logic-low RESET output down to 1 V supply - ensures fail-safe behavior during deep brownout |
| WDI edge sensitivity | Accepts 50 ns minimum pulse width - accommodates fast GPIO toggling without timing overhead |
Applications
| Industrial PLC Controller | Medical Infusion Pump |
|---|---|
Use Scenario: Microcontroller supervises motor actuation and sensor sampling in factory automation cabinets subject to 24 V rail fluctuations. IC Role / Device Role / Timing Role: Voltage supervisor and watchdog timer ensuring deterministic recovery from brownout or firmware lockup. Use Value: 2.63 V threshold matches 2.7 V LDO output; 140 ms reset timeout aligns with FPGA configuration time; open-drain RESET enables shared reset bus with FPGA and ADC. |
Use Scenario: Battery-powered infusion pump runs safety-critical dosing algorithms requiring guaranteed restart on software hang. IC Role / Device Role / Timing Role: Fail-safe watchdog supervisor monitoring main MCU execution and asserting hardware reset on missed WDI toggle. Use Value: 1.6 s watchdog timeout allows ample margin for complex dose calculation loops; 5 µA quiescent current preserves Li-ion battery runtime over 18-month service life. |
| Automotive Telematics Unit | Smart Energy Meter |
Use Scenario: LTE modem and GPS module powered from vehicle battery via buck converter with variable 3.3 V output. IC Role / Device Role / Timing Role: Supply monitor detecting undervoltage during cold-crank events and initiating graceful shutdown. Use Value: Glitch immunity rejects 100 mV/5 µs cranking transients; −40°C to +85°C rating covers under-dash thermal range; SC70 footprint saves space on compact modem PCB. |
Use Scenario: Revenue-grade meter uses isolated MCU to log kWh data and communicate via PLC or RF, operating from supercapacitor backup during mains outage. IC Role / Device Role / Timing Role: Brownout detector triggering controlled save-to-EEPROM and shutdown when VCC drops below 2.63 V. Use Value: RESET valid to 1 V ensures last-write integrity as supercapacitor discharges to 1.2 V; 2.63 V threshold avoids premature reset during nominal 2.7 V backup regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UT26D3+ | 2.63 V reset threshold, 140 ms timeout, push-pull RESET, 1.6 s watchdog, SOT-23-5 | Requires PCB redesign due to 5-pin SOT-23 vs. 4-pin SC70; push-pull output lacks wired-OR capability | Select when board layout allows extra pin and system requires driven high-state RESET |
| TPS3808G125DBVR | 2.63 V threshold, 200 ms timeout (not 140 ms), no watchdog, open-drain RESET, SOT-23-6 | Lacks watchdog functionality; longer timeout may delay system boot; larger package increases footprint | Select only if watchdog is unnecessary and 200 ms reset delay is acceptable in target application |
Compared with MAX6326UT26D3+ and TPS3808G125DBVR, ADM8617RCYAKSZ-RL7 uniquely combines 4-pin SC70 packaging, open-drain RESET, precise 140 ms timeout, and integrated 1.6 s watchdog-enabling compact, fail-safe microprocessor supervision without layout or firmware compromise.
Availability
ADM8617RCYAKSZ-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, medical infusion pumps, automotive telematics units, and smart energy meters requiring stable component supply and long-term lifecycle support.
Supply support for ADM8617RCYAKSZ-RL7 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 ADM8616/ADM8617 family delivers ultra-low-power, precision voltage supervision with integrated watchdog for resource-constrained microprocessor systems where reliability and PCB area are critical.
FAQ
What is the exact reset threshold voltage of ADM8617RCYAKSZ-RL7?
The ADM8617RCYAKSZ-RL7 has a nominal reset threshold of 2.63 V, with a guaranteed tolerance of ±2.7% (2.55 V to 2.70 V) over −40°C to +85°C. This value is laser-trimmed during production and specified in Table 1 of the Rev. C datasheet under "ADM861xR" option. The threshold remains stable with 40 ppm/°C temperature coefficient.
Does ADM8617RCYAKSZ-RL7 support watchdog functionality, and what is its timeout period?
Yes, ADM8617RCYAKSZ-RL7 includes a fully integrated watchdog timer with a typical timeout period of 1.6 seconds, corresponding to the "Y" suffix in its ordering code. The timer clears on any WDI pin transition (low-to-high or high-to-low) and asserts RESET if unattended beyond this period. This is confirmed in the Ordering Guide and Table 1 under "Watchdog Timeout Period" for "ADM861xxxY".
What is the RESET output configuration of ADM8617RCYAKSZ-RL7, and why does it matter?
ADM8617RCYAKSZ-RL7 features an active-low open-drain RESET output, distinct from the push-pull output of the ADM8616 series. This allows multiple devices to share a common reset bus using a single pull-up resistor, supports level-shifting across voltage domains, and prevents contention in multi-master systems-critical in complex embedded designs where ADM8617RCYAKSZ-RL7 is deployed.
Can ADM8617RCYAKSZ-RL7 operate reliably at very low supply voltages?
Yes, ADM8617RCYAKSZ-RL7 guarantees valid RESET output down to VCC = 1 V, as explicitly stated in the General Description and Specifications table. Its internal circuitry remains functional and asserts logic-low RESET even during deep brownout conditions, making it suitable for battery-backed or energy-harvesting applications where ADM8617RCYAKSZ-RL7 must supervise until near-exhaustion.
What package type and dimensions does ADM8617RCYAKSZ-RL7 use?
ADM8617RCYAKSZ-RL7 uses a 4-lead SC70 package (package code KS-4), with outline dimensions of 2.20 mm × 1.35 mm × 0.90 mm. This is confirmed in Figure 16 (Outline Dimensions) and the Ordering Guide, where "KS" denotes the SC70 variant. The small footprint supports high-density layouts in portable and space-constrained electronics where ADM8617RCYAKSZ-RL7 is commonly applied.
ADM8617RCYAKSZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
ADM8617RCYAKSZ-RL7 FAQ
1.How can I place an order for ADM8617RCYAKSZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8617RCYAKSZ-RL7 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 ADM8617RCYAKSZ-RL7 reliable?
The price and inventory of ADM8617RCYAKSZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8617RCYAKSZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM8617RCYAKSZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8617RCYAKSZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8617RCYAKSZ-RL7?
ADM8617RCYAKSZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8617RCYAKSZ-RL7 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 ADM8617RCYAKSZ-RL7?
For technical support, including ADM8617RCYAKSZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8617RCYAKSZ-RL7 requirements.
6.How does Aetrix verify that ADM8617RCYAKSZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM8617RCYAKSZ-RL7 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 ADM8617RCYAKSZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM8617RCYAKSZ-RL7?
All ADM8617RCYAKSZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM8617RCYAKSZ-RL7, 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 ADM8617RCYAKSZ-RL7 part is unused and in its original packaging.
Return procedure for ADM8617RCYAKSZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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