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Analog Devices Inc. ADM6823TYRJZ-RL7
- Part No.:
- ADM6823TYRJZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ADM6823TYRJZ-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:11,087
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Product details
Overview
ADM6823TYRJZ-RL7 from Analog Devices is a precision low-voltage supervisory circuit with integrated watchdog timer and manual reset input, designed for microprocessor supply monitoring in embedded systems. It features a 3.08 V reset threshold, 140 ms minimum reset timeout, 1.6 sec typical watchdog timeout, push-pull active-low RESET output, and operates across −40°C to +125°C. Used in portable controllers and intelligent instruments where brownout detection and code execution integrity are critical.
For engineers reviewing the ADM6823TYRJZ-RL7 datasheet, ADM6823TYRJZ-RL7 pinout, ADM6823TYRJZ-RL7 application, or ADM6823TYRJZ-RL7 equivalent, this device delivers guaranteed reset validity down to VCC = 1 V, glitch-immune power monitoring, and deterministic watchdog behavior - key selection criteria for industrial microcontroller supervision.
Technical Context
The ADM6823TYRJZ-RL7 implements a fixed-threshold voltage monitor with internal reference (2.19 V nominal), comparator, and digital reset generator with 140 ms minimum assertion time. Its watchdog circuit clears on any logic transition at WDI and times out after 1.6 sec if unstimulated, directly asserting RESET without external components.
It integrates a 50 kΩ internal MR pull-up, debounced manual reset input, and push-pull active-low RESET output capable of sinking ≥1.2 mA at VCC ≥ 3.15 V. All timing and threshold parameters are specified over full −40°C to +125°C operating range with 60 ppm/°C temperature coefficient on VTH.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08 V (typ), ±0.08 V tolerance - sets precise brownout detection point for 3.3 V systems |
| Reset Timeout | 140 ms (min) - ensures stable power-up before processor release |
| Watchdog Timeout | 1.6 sec (typ), 1.12–2.40 sec (min–max) - provides robust software hang detection window |
| Supply Current | 7 μA (typ) at VCC = 3.6 V - enables battery-powered operation for >10 years in standby |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| RESET Output Type | Push-pull active-low - eliminates need for external pull-up resistor; drives logic-low directly |
| VCC Validity | RESET asserted valid down to VCC = 1 V - guarantees reliable reset assertion during deep brownout |
Pinout & Package
ADM6823TYRJZ-RL7 is housed in a lead-free 5-lead SOT-23 (RJ-5) package per JEDEC MO-178-AA, with 1.90 mm × 2.80 mm footprint and 1.15 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull reset output; sinks ≥1.2 mA at VCC ≥ 3.15 V; valid to VCC = 1 V |
| 2 | GND | Ground reference for all internal circuits and reset assertion logic |
| 3 | MR | Active-low manual reset input with 50 kΩ internal pull-up; 1 μs minimum pulse width; debounced |
| 4 | WDI | Watchdog input; cleared by any logic transition (50 ns min pulse); draws ≤160 μA when high |
| 5 | VCC | Monitored supply input; supports 2.1 V to 2.75 V operation per ADM682_T/S/R family designation |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed Reset Validity to VCC = 1 V | Ensures deterministic reset assertion even during severe brownout conditions before power collapse |
| Integrated 50 kΩ MR Pull-Up | Eliminates external resistor; enables single-button reset with no floating-input risk |
| Glitch-Immune VCC Monitoring | Rejects transients <100 ns duration - prevents spurious resets from switching noise or ESD |
| Fixed 140 ms Reset Timeout | Provides consistent, predictable release timing independent of external RC components |
| Watchdog Clear on Any WDI Transition | Supports minimal firmware overhead - no strict duty cycle or frequency requirements |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Supervising 3.3 V microcontroller supply in programmable logic controllers exposed to wide ambient temperature swings and electrical noise. IC Role / Device Role / Timing Role: Voltage supervisor and watchdog timer ensuring safe boot, brownout recovery, and software hang detection. Use Value: Prevents erratic controller behavior during line dips or EMI events via guaranteed 140 ms reset hold and 3.08 V threshold matched to 3.3 V rail tolerance. |
Use Scenario: Monitoring MCU power in body control units operating from vehicle battery (9–16 V) with LDO-regulated 3.3 V domain. IC Role / Device Role / Timing Role: Primary reset generator with manual override and watchdog supervision for ASIL-B-relevant functions. Use Value: −40°C to +125°C rating and 60 ppm/°C VTH drift ensure stable reset behavior across engine bay thermal cycles. |
| Portable Medical Sensors | Smart Energy Meters |
|
Use Scenario: Power-on and runtime supervision of ultra-low-power ARM Cortex-M0+ in battery-operated glucose monitors. IC Role / Device Role / Timing Role: Low-quiescent-current (7 μA) supervisor enabling multi-year battery life while maintaining watchdog safety. Use Value: Push-pull RESET eliminates pull-up current drain; 1.6 sec watchdog timeout aligns with sensor sampling intervals to detect firmware lockup. |
Use Scenario: Ensuring reliable meter MCU operation during grid voltage sags and transient surges in residential electricity meters. IC Role / Device Role / Timing Role: Dual-role supervisor providing both power-fail reset and software watchdog with MR override for field calibration. Use Value: MR debounce and 100 ns glitch rejection prevent false resets from relay switching noise on shared PCB ground planes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326T31D2T+ | 3.08 V threshold, open-drain RESET, no watchdog, 140 ms timeout, 1.8–5.5 V operation | Lacks watchdog functionality; requires external pull-up; suited for simpler reset-only use cases | Select when watchdog is unnecessary and board space allows external pull-up resistor |
| TPS3808G33DBVR | 3.3 V threshold, push-pull RESET, no manual reset, 200 ms timeout, 1.8–6.5 V operation | Higher threshold (3.3 V vs. 3.08 V); no MR pin; longer timeout; higher quiescent current (12 μA) | Choose only if system requires exact 3.3 V trip point and MR is unused; verify timing compatibility |
Compared with ADM6823TYRJZ-RL7, MAX6326T31D2T+ omits watchdog capability but offers wider VCC range, while TPS3808G33DBVR trades manual reset and tighter threshold accuracy for higher supply voltage tolerance and simplified interface - neither matches the integrated watchdog + MR + push-pull + 3.08 V precision combination of ADM6823TYRJZ-RL7.
Availability
ADM6823TYRJZ-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and portable medical sensors requiring stable component supply, long-term lifecycle support, and guaranteed −40°C to +125°C performance.
Supply support for ADM6823TYRJZ-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 ADM682x family was engineered specifically for microprocessor-based systems needing deterministic power-on reset, brownout protection, and code-execution integrity assurance - with emphasis on low power, wide temperature range, and integration of watchdog and manual reset in compact SOT-23 packages.
FAQ
What is the exact reset threshold voltage of the ADM6823TYRJZ-RL7?
The ADM6823TYRJZ-RL7 has a nominal reset threshold of 3.08 V, with a guaranteed range of 3.00 V (min) to 3.15 V (max) across −40°C to +125°C. This value is factory-trimmed and specified in Table 2 of the datasheet under "ADM682xT" variant; the 'T' in the part number explicitly denotes the 3.08 V option.
Does the ADM6823TYRJZ-RL7 require an external pull-up resistor on the RESET pin?
No, the ADM6823TYRJZ-RL7 does not require an external pull-up resistor on the RESET pin because it features a push-pull active-low output stage. The internal driver actively pulls RESET low during assertion and drives it high (to ~0.8×VCC) when deasserted - eliminating external components and reducing board area and BOM count.
How does the watchdog timer in the ADM6823TYRJZ-RL7 respond to WDI pin transitions?
The watchdog timer in the ADM6823TYRJZ-RL7 clears on any logic transition - either low-to-high or high-to-low - at the WDI pin. Pulses as short as 50 ns are recognized, and the timer resets to zero upon each valid edge. If no transition occurs within 1.6 sec (typ), the timer expires and asserts RESET.
Can the ADM6823TYRJZ-RL7 operate reliably at VCC = 1.2 V?
Yes, the ADM6823TYRJZ-RL7 guarantees valid RESET output behavior down to VCC = 1 V. At VCC = 1.2 V, the RESET output remains functional: VOL ≤ 0.3 V (ISINK = 100 μA) and VOH ≥ 0.8×VCC (ISOURCE = 200 μA), ensuring interoperability with 1.2 V logic families during deep brownout recovery.
What is the function of Pin 3 (MR) on the ADM6823TYRJZ-RL7?
Pin 3 (MR) on the ADM6823TYRJZ-RL7 is an active-low manual reset input with integrated 50 kΩ pull-up. Driving MR low for ≥1 μs forces RESET assertion regardless of VCC level or watchdog state. On-chip debounce and 100 ns glitch rejection prevent false triggers from mechanical switch bounce or noise.
ADM6823TYRJZ-RL7 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:
- 3.08V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
ADM6823TYRJZ-RL7 FAQ
1.How can I place an order for ADM6823TYRJZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6823TYRJZ-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 ADM6823TYRJZ-RL7 reliable?
The price and inventory of ADM6823TYRJZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6823TYRJZ-RL7 is usually 5 days.
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ADM6823TYRJZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6823TYRJZ-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 ADM6823TYRJZ-RL7?
For technical support, including ADM6823TYRJZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6823TYRJZ-RL7 requirements.
6.How does Aetrix verify that ADM6823TYRJZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM6823TYRJZ-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 ADM6823TYRJZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM6823TYRJZ-RL7?
All ADM6823TYRJZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6823TYRJZ-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 ADM6823TYRJZ-RL7 part is unused and in its original packaging.
Return procedure for ADM6823TYRJZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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