My Inquiry
My Account
Analog Devices Inc. ADM8616RCYAKSZ-RL7
- Part No.:
- ADM8616RCYAKSZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
ADM8616RCYAKSZ-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,123
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM8616RCYAKSZ-RL7 from Analog Devices is a low-voltage supervisory circuit with integrated watchdog timer in a 4-lead SC70 package, designed to monitor VCC supply integrity and microprocessor code execution. It features a 2.63 V reset threshold, 140 ms reset timeout, 1.6 s watchdog timeout, push-pull active-low RESET output, and guaranteed operation down to VCC = 1 V-used in portable controllers and embedded systems requiring reliable power-on reset and fail-safe recovery.
For engineers reviewing the ADM8616RCYAKSZ-RL7 datasheet, ADM8616RCYAKSZ-RL7 pinout, ADM8616RCYAKSZ-RL7 application, or ADM8616RCYAKSZ-RL7 equivalent, key selection criteria include reset threshold accuracy (±13 mV at 2.63 V), watchdog timeout stability over temperature, push-pull drive capability up to 1.2 mA at 2.7 V, and glitch-immune operation during fast VCC transients.
Technical Context
The ADM8616RCYAKSZ-RL7 implements a precision bandgap-based voltage reference for reset threshold detection with 40 ppm/°C temperature coefficient and 2 × VTH hysteresis. Its internal watchdog timer clears on any WDI logic transition (≥50 ns pulse width) and asserts RESET if no toggle occurs within 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 push-pull output ensures valid logic levels (VOL ≤ 0.3 V, VOH ≥ 0.8 × VCC) across 1 V to 5.5 V VCC range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63 V ±13 mV - sets precise undervoltage detection point for 2.7 V–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 service intervals while detecting lockups |
| Supply Current | 5 µA typ at 3.6 V - enables battery-powered operation for >10 years in always-on monitoring |
| RESET Output Type | Push-pull active-low - drives high/low without external pull-up, supports direct MCU RESET input |
| VCC Operating Range | 1 V to 5.5 V - guarantees RESET validity during brownout down to 1 V, critical for low-power wake-up |
| Temp Range | −40°C to +85°C - qualified for industrial and automotive cabin environments |
Pinout & Package
ADM8616RCYAKSZ-RL7 is housed in a 4-lead SC70 (KS-4) package measuring 2.20 mm × 1.35 mm × 0.9 mm, optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground Reference | Return path for internal reference and RESET driver; must be low-impedance connection to system ground plane |
| 2 RESET | Active-Low Reset Output | Push-pull output asserted low during VCC < 2.63 V or WDI timeout; drives MCU RESET pin directly |
| 3 WDI | Watchdog Input | Edge-sensitive input; toggling resets internal 1.6 s timer; floating disables watchdog function |
| 4 VCC | Monitored Supply Input | Primary power rail under supervision; also powers internal circuitry; requires local 0.1 µF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Precision Reset Threshold | 2.63 V with ±13 mV tolerance and 40 ppm/°C drift - eliminates need for external trimming in 2.7 V systems |
| Glitch-Immune Detection | Rejects transients <100 mV/8 µs (at 2.63 V threshold) - prevents spurious resets during switching noise |
| Low-Power Operation | 5 µA typical supply current - extends battery life in coin-cell–powered IoT sensors and wearables |
| Valid RESET Below 1 V | Guaranteed VOL ≤ 0.3 V and VOH ≥ 0.8 × VCC down to VCC = 1 V - ensures deterministic reset release during deep brownout |
| WDI Edge Sensitivity | Detects 50 ns pulses - allows minimal firmware overhead for watchdog strobing in real-time applications |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: Microcontroller-based programmable logic controller operating from 3.3 V rail in factory automation cabinets subject to voltage sags and EMI. IC Role / Device Role / Timing Role: Supervises 3.3 V supply and monitors firmware execution via WDI; asserts RESET on undervoltage or software hang. Use Value: Prevents corrupted I/O state during brownout by holding MCU in reset until 3.3 V stabilizes for 140 ms, and recovers from infinite loops via 1.6 s watchdog timeout. | Use Scenario: Battery-powered ECG recorder with ARM Cortex-M0+ MCU, requiring ultra-low quiescent current and fail-safe boot sequence. IC Role / Device Role / Timing Role: Provides power-on reset and runtime watchdog supervision; push-pull RESET eliminates need for external pull-up resistor. Use Value: 5 µA supply current extends lithium coin-cell life beyond 5 years; 2.63 V threshold matches LDO output, ensuring reset before brownout-induced data corruption. |
| Smart Energy Meters | Automotive Body Control Modules |
Use Scenario: ANSI C12.22-compliant electricity meter with dual-supply MCU (3.3 V core, 5 V interface) exposed to grid fluctuations. IC Role / Device Role / Timing Role: Monitors 3.3 V core rail; uses WDI to verify metering firmware heartbeat; asserts RESET on sustained supply dip or code stall. Use Value: 140 ms reset timeout accommodates slow LDO startup; 2.63 V threshold avoids false triggers during 100-ms dips to 2.8 V. | Use Scenario: Door module MCU powered from vehicle battery (9–16 V) via 3.3 V LDO, operating in −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Supervises 3.3 V rail and validates firmware execution; push-pull output interfaces directly with automotive-grade MCU RESET pin. Use Value: −40°C to +85°C qualification ensures reliability in under-hood thermal cycling; 40 ppm/°C threshold drift maintains accuracy across temperature extremes. |
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, open-drain RESET, no watchdog timer | Lacks watchdog functionality; requires external timer or MCU-based supervision | Select when watchdog is unnecessary and open-drain output is preferred for wired-OR reset buses |
| TPS3808G33DBVR | 3.3 V reset threshold, 200 ms timeout, no watchdog, 1.6 µA quiescent current | Higher reset threshold unsuitable for 2.7 V systems; no WDI interface | Choose for ultra-low-power 3.3 V-only applications where watchdog is handled separately in firmware |
Compared with MAX6326UT26D3+ and TPS3808G33DBVR, the ADM8616RCYAKSZ-RL7 uniquely integrates both precision 2.63 V supervision and hardware watchdog in one SC70 package, eliminating external timing components and reducing BOM count for compact embedded controllers.
Availability
ADM8616RCYAKSZ-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, smart energy meters, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADM8616RCYAKSZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADM8616/ADM8617 family delivers integrated power supervision and watchdog functionality in ultra-small SC70 packages, targeting space- and power-constrained microprocessor systems in portable, industrial, and automotive applications.
FAQ
What is the exact reset threshold voltage of the ADM8616RCYAKSZ-RL7?
The ADM8616RCYAKSZ-RL7 has a nominal reset threshold of 2.63 V, with a guaranteed range of 2.55 V to 2.70 V at +25°C and ±13 mV tolerance. This value is laser-trimmed during production and exhibits 40 ppm/°C temperature coefficient, making it suitable for precise 2.7 V supply monitoring in industrial and portable systems.
Does the ADM8616RCYAKSZ-RL7 require an external pull-up resistor on the RESET pin?
No, the ADM8616RCYAKSZ-RL7 does not require an external pull-up resistor because it features a push-pull active-low RESET output. The internal driver actively pulls RESET low during assertion and drives it high (to ≥0.8 × VCC) during deassertion across its full 1 V to 5.5 V VCC range, enabling direct connection to most microcontroller RESET inputs.
How is the watchdog timer disabled on the ADM8616RCYAKSZ-RL7?
The watchdog timer on the ADM8616RCYAKSZ-RL7 is disabled by leaving the WDI pin unconnected (floating). Internal circuitry detects the floating state and disconnects the watchdog timer from the RESET generation path, preventing unintended resets. Alternatively, tri-stating the WDI driver achieves the same effect without requiring physical disconnection.
What is the minimum VCC voltage at which the ADM8616RCYAKSZ-RL7 guarantees valid RESET output levels?
The ADM8616RCYAKSZ-RL7 guarantees valid RESET output levels down to VCC = 1 V: VOL ≤ 0.3 V (with 50 µA sink) and VOH ≥ 0.8 × VCC (with 500 µA source). This ensures deterministic reset behavior during deep brownout conditions, a critical feature for battery-backed or energy-harvesting systems where supply may decay slowly.
Can the ADM8616RCYAKSZ-RL7 be used with a 1.8 V supply rail?
Yes, the ADM8616RCYAKSZ-RL7 supports VCC from 1 V to 5.5 V, so it operates correctly with a 1.8 V supply. However, its 2.63 V reset threshold means it will assert RESET continuously on a 1.8 V rail. It is intended for supervision of higher rails (e.g., 2.7 V, 3.3 V) where 2.63 V provides appropriate undervoltage margin-not for 1.8 V rail monitoring.
ADM8616RCYAKSZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- 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
ADM8616RCYAKSZ-RL7 FAQ
1.How can I place an order for ADM8616RCYAKSZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8616RCYAKSZ-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 ADM8616RCYAKSZ-RL7 reliable?
The price and inventory of ADM8616RCYAKSZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8616RCYAKSZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM8616RCYAKSZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8616RCYAKSZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8616RCYAKSZ-RL7?
ADM8616RCYAKSZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8616RCYAKSZ-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 ADM8616RCYAKSZ-RL7?
For technical support, including ADM8616RCYAKSZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8616RCYAKSZ-RL7 requirements.
6.How does Aetrix verify that ADM8616RCYAKSZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM8616RCYAKSZ-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 ADM8616RCYAKSZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM8616RCYAKSZ-RL7?
All ADM8616RCYAKSZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM8616RCYAKSZ-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 ADM8616RCYAKSZ-RL7 part is unused and in its original packaging.
Return procedure for ADM8616RCYAKSZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM8616RCYAKSZ-RL7 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
