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Analog Devices Inc. ADM824RYKSZ-REEL7
- Part No.:
- ADM824RYKSZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
ADM824RYKSZ-REEL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
ADM824RYKSZ-REEL7 from Analog Devices is a supervisory circuit with watchdog timer and dual push-pull reset outputs, designed for microprocessor supply voltage monitoring and code execution integrity assurance. It features a 2.63 V reset threshold (±50 mV over temperature), 140 ms minimum reset timeout, 1.6 s typical watchdog timeout, and operates across −40°C to +125°C in automotive-grade applications such as engine control units and ADAS domain controllers.
For engineers reviewing the ADM824RYKSZ-REEL7 datasheet, ADM824RYKSZ-REEL7 pinout, ADM824RYKSZ-REEL7 application, or ADM824RYKSZ-REEL7 equivalent, key selection criteria include reset threshold accuracy, guaranteed reset validity down to VCC = 1 V, watchdog input timing compatibility, and SC70 package thermal performance in space-constrained embedded systems.
Technical Context
The ADM824RYKSZ-REEL7 integrates a precision voltage monitor with hysteresis (10 mV), a glitch-immune reset generator, and a watchdog timer cleared by logic transitions on WDI. Its dual active-low and active-high RESET outputs are push-pull configured and guaranteed functional down to VCC = 1 V.
It uses an internal bandgap reference and comparator architecture to detect VCC falling below 2.63 V (typical) with ±40 ppm/°C temperature coefficient. The watchdog timeout is fixed at 1.6 s (typical), with WDI pulse width tolerance of 50 ns and input current ranging from −20 µA to +160 µA depending on WDI voltage level.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63 V (typical), 2.55–2.70 V range over −40°C to +125°C - ensures reliable brownout detection for 2.7 V nominal systems. |
| Reset Timeout | 140–280 ms - guarantees sufficient processor initialization time after power stabilization. |
| Watchdog Timeout | 1.12–2.40 s - provides robust code-execution supervision without false triggers during transient software delays. |
| Supply Current | 5 µA (typical) at VCC = 2.7 V - enables use in always-on battery-backed subsystems. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
| Output Type | Dual push-pull RESET and RESET - eliminates need for external pull-up/pull-down resistors in most MCU interface configurations. |
| VCC Validity Range | Reset outputs valid down to VCC = 1 V - supports graceful shutdown and low-voltage fault handling. |
Pinout & Package
ADM824RYKSZ-REEL7 is housed in a 5-lead SC70 (KS-5) package, measuring 2.00 mm × 1.25 mm × 0.90 mm, with 0.65 mm lead pitch and JEDEC MO-203-AA compliance. Thermal impedance is 146°C/W (θJA), supporting operation in thermally dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output - asserts low when VCC < 2.63 V, MR is pulled low, or WDI timeout occurs. |
| 2 | GND | Ground reference - must be connected to system ground plane with low-inductance path for noise immunity. |
| 3 | RESET | Active-high push-pull reset output - complements pin 1 for direct interface with MCUs requiring active-high reset assertion. |
| 4 | WDI | Watchdog input - requires logic transition every ≤1.6 s; floating or high-impedance state disables watchdog function. |
| 5 | VCC | Monitored supply voltage input - powers device and serves as reference for reset threshold detection. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive-grade temperature range | Qualified from −40°C to +125°C - enables deployment in engine control, transmission, and body electronics without derating. |
| Power supply glitch immunity | Rejects transients ≤100 ns (typical) - prevents spurious resets during EMI events or switching noise. |
| Dual push-pull reset outputs | Eliminates external biasing components - reduces BOM count and PCB footprint in dual-signaling MCU interfaces. |
| Internal MR pull-up not applicable | ADM824 lacks manual reset input - simplifies layout by removing MR trace and debouncing capacitor requirements. |
| Low quiescent current | 5 µA typical at 2.7 V - extends battery life in always-on vehicle subsystems such as telematics wake-up circuits. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
|
Use Scenario: Monitors 2.7 V supply rail powering safety-critical MCU and sensor interface ASICs during cold cranking and load dump conditions. IC Role / Device Role / Timing Role: Supervisory circuit providing power-on reset, brownout detection, and watchdog-based recovery from firmware lockup. Use Value: Ensures deterministic MCU startup and automatic recovery from software faults without requiring host processor intervention. |
Use Scenario: Embedded in radar processing module to supervise 3.3 V core supply and validate real-time processing loop execution. IC Role / Device Role / Timing Role: Dual-output reset generator with watchdog timer enforcing strict timing boundaries on sensor fusion algorithms. Use Value: Guarantees fail-safe behavior by asserting both active-high and active-low reset signals to FPGA and ARM Cortex-R5 cores simultaneously. |
| Industrial PLC I/O Module | Automotive Infotainment Head Unit |
|
Use Scenario: Secures operation of isolated CAN/FlexRay communication controller powered from regulated 2.7 V rail in harsh factory environments. IC Role / Device Role / Timing Role: Voltage supervisor with watchdog input tied to communication stack heartbeat signal to detect protocol stack hangs. Use Value: Prevents bus arbitration failures by forcing controlled reboot before corrupted messages propagate across distributed control network. |
Use Scenario: Integrated into display cluster MCU power domain to manage reset sequencing during ignition-on/off transitions and USB hot-plug events. IC Role / Device Role / Timing Role: Dual-reset supervisor enabling synchronized reset assertion to application processor and graphics controller via independent output pins. Use Value: Eliminates display artifacts and audio glitches caused by asynchronous power-up of co-located processors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UT26D3+T | 2.63 V reset threshold, 140 ms timeout, no watchdog timer, SOT-23-5 package | Lacks watchdog functionality - suitable only where software-level fault detection is implemented externally | Select when watchdog capability is unnecessary and board space allows SOT-23 instead of SC70 |
| TPS3808G33DBVR | 3.3 V reset threshold, 200 ms timeout, adjustable watchdog (1.25 s default), SOT-23-6 package | Higher reset threshold and extra pin - requires redesign for 2.7 V system compatibility and PCB layout change | Choose if system operates at 3.3 V and requires programmable watchdog timeout or enhanced ESD protection |
Compared with ADM824RYKSZ-REEL7, MAX6326UT26D3+T omits watchdog supervision but offers identical threshold and package footprint, while TPS3808G33DBVR shifts reset voltage upward and adds configurability at the cost of pin count and layout compatibility.
Availability
ADM824RYKSZ-REEL7 is available at Aetrix Electronics and suitable for automotive engine control, ADAS domain controllers, and industrial PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM824RYKSZ-REEL7 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 company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control systems.
The ADM824 belongs to Analog Devices' automotive-qualified supervisory IC product line, engineered specifically for robust power monitoring and fault recovery in safety-critical embedded systems operating under extreme thermal and electrical stress.
FAQ
What is the reset threshold voltage of the ADM824RYKSZ-REEL7?
The ADM824RYKSZ-REEL7 has a nominal reset threshold of 2.63 V, with a guaranteed range of 2.55 V to 2.70 V over the full −40°C to +125°C operating temperature range. This threshold is factory-trimmed and exhibits ±40 ppm/°C temperature coefficient, making it suitable for 2.7 V nominal supply rails in automotive applications where precise brownout detection is required. The ADM824RYKSZ-REEL7 maintains this specification without external calibration.
Does the ADM824RYKSZ-REEL7 include a manual reset input?
No, the ADM824RYKSZ-REEL7 does not feature a manual reset (MR) input. Per the Analog Devices ADM823/ADM824/ADM825 selection table, only ADM823 and ADM825 variants include MR functionality. The ADM824RYKSZ-REEL7 provides watchdog input (WDI) and dual push-pull reset outputs (RESET and RESET) but omits MR to simplify design and reduce pin count in applications where external reset buttons are not required.
What package type is used for the ADM824RYKSZ-REEL7?
The ADM824RYKSZ-REEL7 is packaged in a 5-lead SC70 (KS-5) outline, compliant with JEDEC MO-203-AA standards. Its dimensions are 2.00 mm × 1.25 mm × 0.90 mm with 0.65 mm lead pitch. This compact footprint supports high-density PCB layouts in automotive and portable electronics, and its 146°C/W θJA thermal impedance enables reliable operation in thermally constrained enclosures without additional heatsinking.
How does the watchdog timer in the ADM824RYKSZ-REEL7 operate?
The ADM824RYKSZ-REEL7 watchdog timer has a fixed 1.6 s typical timeout period and is cleared by any logic transition (low-to-high or high-to-low) on the WDI pin. If no transition occurs within the timeout window, the device asserts both RESET and RESET outputs. WDI accepts pulses as short as 50 ns and draws up to 160 µA when driven high; leaving WDI floating disables the watchdog. This behavior is documented in the ADM824RYKSZ-REEL7 datasheet Rev. D, Figure 16 and Table 2.
Is the ADM824RYKSZ-REEL7 suitable for automotive applications?
Yes, the ADM824RYKSZ-REEL7 is explicitly qualified for automotive use with guaranteed operation from −40°C to +125°C and AEC-Q100 stress testing alignment. Its 2.63 V reset threshold targets 2.7 V supply rails common in modern automotive microcontrollers, and its power supply glitch immunity (100 ns transient rejection) meets requirements for engine bay and chassis-mounted electronics. The SC70 package also supports automated optical inspection and reflow soldering in high-reliability automotive manufacturing lines.
ADM824RYKSZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- Push-Pull, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
ADM824RYKSZ-REEL7 FAQ
1.How can I place an order for ADM824RYKSZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM824RYKSZ-REEL7 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 ADM824RYKSZ-REEL7 reliable?
The price and inventory of ADM824RYKSZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM824RYKSZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM824RYKSZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM824RYKSZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM824RYKSZ-REEL7?
ADM824RYKSZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM824RYKSZ-REEL7 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 ADM824RYKSZ-REEL7?
For technical support, including ADM824RYKSZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM824RYKSZ-REEL7 requirements.
6.How does Aetrix verify that ADM824RYKSZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM824RYKSZ-REEL7 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 ADM824RYKSZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM824RYKSZ-REEL7?
All ADM824RYKSZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM824RYKSZ-REEL7, 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 ADM824RYKSZ-REEL7 part is unused and in its original packaging.
Return procedure for ADM824RYKSZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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