My Inquiry
My Account
Analog Devices Inc. ADM823LYKSZ-R7
- Part No.:
- ADM823LYKSZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
ADM823LYKSZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,219
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM823LYKSZ-R7 from Analog Devices is a precision supervisory circuit with watchdog timer and manual reset, designed for microprocessor supply voltage monitoring in automotive-grade systems. It features a 4.63 V reset threshold, 140 ms minimum reset timeout, 1.6 sec watchdog timeout, push-pull active-low RESET output, and operates across −40°C to +125°C. Used in engine control units to ensure reliable boot-up and runtime fault recovery.
For engineers reviewing the ADM823LYKSZ-R7 datasheet, ADM823LYKSZ-R7 pinout, ADM823LYKSZ-R7 application, or ADM823LYKSZ-R7 equivalent, key selection criteria include reset threshold accuracy (±25 mV over temperature), guaranteed reset validity down to VCC = 1 V, SC70-5 package footprint compatibility, and integrated 52 kΩ MR pull-up for push-button reset implementation.
Technical Context
The ADM823LYKSZ-R7 integrates a precision voltage monitor, a 1.6 sec watchdog timer cleared by WDI transitions, and a debounced manual reset input with internal 52 kΩ pull-up. Its reset generator asserts active-low RESET for ≥140 ms after VCC rises above 4.63 V or after MR release.
It uses a bandgap reference with 40 ppm/°C temperature coefficient and 10 mV hysteresis to maintain threshold stability. The push-pull output drives up to 3.2 mA sink at VCC ≥ VTH min, enabling direct interface with microcontroller reset inputs without external pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63 V (nominal), ±25 mV over −40°C to +125°C - ensures accurate brownout detection for 5 V systems |
| Reset Timeout | 140 ms (min) - guarantees sufficient hold time for microprocessor initialization sequences |
| Watchdog Timeout | 1.6 sec (typical) - provides robust code execution monitoring without excessive false triggers |
| Supply Current | 5 µA (typical at VCC = 4.75–5.5 V) - enables use in always-on automotive subsystems |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive applications per AEC-Q100 stress requirements |
| Reset Output Type | Active-low push-pull - eliminates need for external pull-up resistor on RESET line |
| VCC Validity Range | RESET valid down to VCC = 1 V - supports graceful reset assertion during deep brownout conditions |
Pinout & Package
ADM823LYKSZ-R7 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. This ultra-compact footprint supports high-density PCB layouts in space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Asserts logic low when VCC < 4.63 V, MR is pulled low, or watchdog times out; sinks 3.2 mA at VCC = VTH min |
| 2 - GND | Ground reference | Primary return path for internal comparators, reset generator, and watchdog logic |
| 3 - MR | Manual reset input (active low) | Accepts ≥1 µs low pulse; includes internal 52 kΩ pull-up - enables push-button reset without external components |
| 4 - WDI | Watchdog input | Clears 1.6 sec timer on any logic transition; detects pulses as short as 50 ns; disabled when floating |
| 5 - VCC | Supply voltage input | Monitored rail (4.75–5.5 V); powers internal circuitry and defines WDI/MR thresholds as fractions of VCC |
Key Features
| Feature | Design Value |
|---|---|
| Automotive temperature range | Qualified from −40°C to +125°C - supports deployment in powertrain, body control, and ADAS modules |
| Glitch-immune reset detection | Rejects VCC transients ≤100 ns - prevents spurious resets during load dump or switching noise events |
| Integrated MR pull-up | 52 kΩ internal resistor - eliminates discrete component for push-button reset, reducing BOM count and layout area |
| Low-power operation | 5 µA typical supply current - extends battery life in always-on vehicle subsystems such as telematics and sensors |
| Valid reset at low VCC | RESET asserted reliably down to VCC = 1 V - ensures deterministic behavior during severe brownout or cold-cranking conditions |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance System (ADAS) Camera Module |
|---|---|
|
Use Scenario: Monitors 5 V supply rail during vehicle start-stop cycles and load dump events. IC Role / Device Role / Timing Role: Supervisory circuit providing power-on reset, brownout protection, and watchdog-triggered recovery. Use Value: Prevents ECU firmware lockup during transient voltage sags by asserting RESET for ≥140 ms and clearing watchdog only on valid WDI toggles. |
Use Scenario: Ensures reliable boot and runtime integrity of image processing SoC in rear-view camera systems. IC Role / Device Role / Timing Role: Voltage supervisor with manual reset for field service and watchdog timer for firmware hang detection. Use Value: Enables fail-safe restart within 1.6 sec if SoC freezes, while MR pin allows technician-initiated reset via chassis-mounted button. |
| Automotive Infotainment Head Unit | Electric Power Steering (EPS) Controller |
|
Use Scenario: Manages reset sequencing for dual-core application processor and audio DSP during ignition cycling. IC Role / Device Role / Timing Role: Single-chip reset supervisor with precise 4.63 V threshold and push-pull outputs. Use Value: Guarantees synchronized reset assertion across multiple ICs using one active-low signal, eliminating timing skew from RC networks. |
Use Scenario: Provides safety-critical reset supervision for motor control MCU operating in high-noise steering column environment. IC Role / Device Role / Timing Role: Automotive-grade voltage monitor with glitch rejection and MR input for diagnostic mode entry. Use Value: Maintains functional safety by detecting undervoltage faults and enabling controlled shutdown before torque loss occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADM824LYRJZ-REEL7 | Dual active-low and active-high RESET outputs; no MR input; same 4.63 V threshold and 1.6 sec watchdog | Suitable where dual-polarity reset signaling is required (e.g., legacy ASICs needing both RESET and RESET̅) | Select when system requires complementary reset outputs and manual reset is handled externally |
| TPS3808G33DBVR | 3.3 V fixed reset threshold; 200 ms reset timeout; no watchdog; SOT-23-5 package; 1.5 µA quiescent current | Applicable in lower-voltage domains (e.g., 3.3 V MCU rails) where watchdog functionality is unnecessary | Choose for cost-sensitive, non-safety-critical 3.3 V applications without runtime code monitoring needs |
Compared with ADM823LYKSZ-R7, ADM824LYRJZ-REEL7 adds dual-output flexibility but removes manual reset capability, while TPS3808G33DBVR reduces power and cost at the expense of watchdog coverage and automotive temperature support.
Availability
ADM823LYKSZ-R7 is available at Aetrix Electronics and suitable for automotive engine control, ADAS camera modules, and infotainment head units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM823LYKSZ-R7 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 ADM823 family delivers automotive-qualified power supply supervision with integrated watchdog and manual reset, targeting safety-critical microprocessor systems where deterministic reset behavior and runtime fault recovery are mandatory.
FAQ
What is the exact reset threshold voltage of the ADM823LYKSZ-R7?
The ADM823LYKSZ-R7 has a nominal reset threshold of 4.63 V, with a tolerance of ±25 mV over the full −40°C to +125°C operating temperature range. This value is factory-trimmed and specified in Table 2 of the Rev. D datasheet under "ADM82xL" grade, confirming its suitability for 5 V system supervision with tight margin control.
Does the ADM823LYKSZ-R7 support manual reset functionality?
Yes, the ADM823LYKSZ-R7 includes a dedicated MR (manual reset) input on Pin 3. It is active-low, accepts pulses as short as 1 µs, and features an internal 52 kΩ pull-up resistor. This allows direct connection to a push-button switch between MR and ground, enabling field-serviceable reset without external components.
What package type and dimensions does the ADM823LYKSZ-R7 use?
The ADM823LYKSZ-R7 is packaged in a 5-lead SC70 (KS-5) outline per JEDEC MO-203-AA, with body dimensions of 2.00 mm × 1.25 mm × 0.90 mm and 0.65 mm lead pitch. Its compact size supports high-density placement in automotive ECUs and ADAS modules where board space is constrained.
How does the watchdog timer in the ADM823LYKSZ-R7 operate?
The ADM823LYKSZ-R7 watchdog timer has a typical timeout of 1.6 sec and is cleared on any logic transition (low-to-high or high-to-low) at the WDI pin. It asserts RESET if no transition occurs within that period. The timer is also cleared during VCC undervoltage or MR assertion, ensuring coordinated fault response across all supervision channels.
Is the ADM823LYKSZ-R7 qualified for automotive applications?
Yes, the ADM823LYKSZ-R7 is rated for −40°C to +125°C operation and is manufactured and tested to meet automotive reliability standards. Its specifications - including reset threshold stability, glitch immunity, and low quiescent current - are validated across this full temperature range, making it appropriate for under-hood and cabin applications per AEC-Q100 guidelines.
ADM823LYKSZ-R7 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:
- 4.63V
- Output:
- Push-Pull
- Reset:
- 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
ADM823LYKSZ-R7 FAQ
1.How can I place an order for ADM823LYKSZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM823LYKSZ-R7 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 ADM823LYKSZ-R7 reliable?
The price and inventory of ADM823LYKSZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM823LYKSZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM823LYKSZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM823LYKSZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM823LYKSZ-R7?
ADM823LYKSZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM823LYKSZ-R7 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 ADM823LYKSZ-R7?
For technical support, including ADM823LYKSZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM823LYKSZ-R7 requirements.
6.How does Aetrix verify that ADM823LYKSZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM823LYKSZ-R7 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 ADM823LYKSZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM823LYKSZ-R7?
All ADM823LYKSZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM823LYKSZ-R7, 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 ADM823LYKSZ-R7 part is unused and in its original packaging.
Return procedure for ADM823LYKSZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM823LYKSZ-R7 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…
