My Inquiry
My Account
Analog Devices Inc. ADM803ZAKS-REEL
- Part No.:
- ADM803ZAKS-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM803ZAKS-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,764
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM803ZAKS-REEL from Analog Devices is a 3-lead SC70 microprocessor supervisory circuit with open-drain active-low RESET output, 2.32 V reset threshold (±0.07 V over −40°C to +125°C), 17 μA supply current, and 240 ms typical power-on reset timeout. It monitors VCC down to 1.0 V and asserts reset during power-up, brownout, and power-down in embedded microcontroller systems.
For engineers reviewing the ADM803ZAKS-REEL datasheet, ADM803ZAKS-REEL pinout, ADM803ZAKS-REEL application, or ADM803ZAKS-REEL equivalent, key selection criteria include reset threshold accuracy at extended temperature, open-drain interface compatibility with 1.8–5.5 V logic, low-quiescent-current operation for battery-backed systems, and SC70 package footprint constraints.
Technical Context
The ADM803ZAKS-REEL implements a precision bandgap voltage reference and comparator with built-in glitch immunity to reject fast transients on VCC up to 100 mV overdrive. Its internal timer ensures reset remains asserted for 240 ms (typical) after VCC rises above the 2.32 V threshold.
Designed for single-supply monitoring, it operates across 1.0 V to 5.5 V VCC and maintains functional reset assertion down to 1.0 V VCC - enabling reliable reset generation even during deep brownout conditions in low-voltage microprocessor applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32 V (typ), ±0.07 V over −40°C to +125°C - matches 2.5 V rail monitoring with margin for dropout |
| Supply Current | 17 μA (typ) at VCC < 3.6 V - enables multi-year operation in coin-cell–powered backup circuits |
| VCC Operating Range | 1.0 V to 5.5 V - supports reset assertion during deep undervoltage events down to 1.0 V |
| Reset Timeout | 240 ms (typ), 140–460 ms (min/max) - holds microprocessor in reset until power stabilizes post-power-up |
| Output Type | Open-drain active-low RESET - requires external pull-up; compatible with mixed-voltage I/O domains |
| Reset Output Low | ≤0.3 V at ISINK = 1.2 mA - ensures solid logic-low drive into standard CMOS inputs |
| Package | 3-lead SC70 (KS-3), 2.0 mm × 2.1 mm footprint - space-constrained PCB integration |
Pinout & Package
ADM803ZAKS-REEL uses a 3-lead SC70 (KS-3) package with exposed pad not connected internally. Pin 1 = GND, Pin 2 = RESET (open-drain), Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for internal reference and comparator; must connect to system ground plane |
| RESET (Pin 2) | Open-drain active-low output | Requires external pull-up resistor; sinks current only when asserted; floats high when deasserted |
| VCC (Pin 3) | Supply input | Monitored voltage rail; powers internal circuitry and defines reset threshold reference point |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 2.32 V with ±0.07 V tolerance over −40°C to +125°C - eliminates need for external trimming in 2.5 V systems |
| Ultra-low quiescent current | 17 μA typical - extends battery life in always-on supervisory functions |
| Brownout detection down to 1.0 V | Functional reset assertion at VCC ≥ 1.0 V - prevents premature release during slow power ramp-down |
| Glitch-immune comparator | Immune to transients ≤100 mV overdrive - avoids false resets from switching noise or ESD |
| SC70 footprint | 2.0 mm × 2.1 mm body size - fits high-density layouts where SOT-23 is too large |
Applications
| Industrial PLC Controller | Medical Sensor Node |
|---|---|
Use Scenario: Power sequencing in DIN-rail mounted programmable logic controllers with 2.5 V FPGA configuration rails. IC Role / Device Role / Timing Role: Monitors 2.5 V auxiliary supply and holds FPGA in reset until rail reaches 2.32 V and stabilizes for 240 ms. Use Value: Prevents configuration corruption by guaranteeing FPGA startup only after stable 2.5 V rail, using minimal board area via SC70 package. | Use Scenario: Battery-powered wearable vital sign monitor with ultra-low-power MCU and analog front-end. IC Role / Device Role / Timing Role: Supervises 2.5 V sensor bias rail and triggers controlled shutdown when voltage drops below 2.32 V during battery depletion. Use Value: Enables graceful data save and state retention before brownout, leveraging 17 μA current draw to minimize standby drain. |
| Automotive Body Control Module | IoT Edge Gateway |
Use Scenario: Reset management for 2.5 V CAN transceiver and microcontroller in under-hood control units exposed to −40°C to +125°C. IC Role / Device Role / Timing Role: Provides temperature-stable 2.32 V reset threshold with <30 ppm/°C drift to ensure deterministic reset timing across full automotive grade range. Use Value: Eliminates cold-start failures by maintaining valid reset assertion down to 1.0 V VCC during cranking-induced dips. | Use Scenario: Supervision of 2.5 V PMIC output powering Wi-Fi SoC and secure element in smart home gateway. IC Role / Device Role / Timing Role: Generates clean, glitch-free reset pulse on power-up and brownout, interfacing via open-drain to SoC's shared reset bus. Use Value: Ensures synchronized boot across multiple ICs without level-shifter components, reducing BOM count and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809ZTR | 2.32 V threshold, SOT-23-3 package, push-pull output, 20 μA supply current | Requires no pull-up resistor but incompatible with wired-OR reset buses | Select when board space allows SOT-23 and push-pull drive simplifies routing |
| TPS3801K23DBVR | 2.33 V threshold, SOT-23-3, open-drain output, 1.6 μA supply current, wider VCC range (0.9–6.0 V) | Lower current enables decade-long battery life but reduced temperature range (−40°C to +85°C) | Select for ultra-low-power portable devices where extended temperature is not required |
Compared with MAX809ZTR and TPS3801K23DBVR, ADM803ZAKS-REEL offers SC70 footprint advantage in dense layouts, guaranteed operation to +125°C, and proven glitch immunity - making it optimal for automotive and industrial edge nodes where thermal robustness and noise immunity are critical.
Availability
ADM803ZAKS-REEL is available at Aetrix Electronics and suitable for industrial PLC controllers, medical sensor nodes, automotive body control modules, and IoT edge gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM803ZAKS-REEL 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 instrumentation, industrial automation, and communications.
The ADM803 series belongs to Analog Devices' microprocessor supervisory product line, engineered specifically for reliable power-monitoring and reset generation in harsh-temperature embedded systems with stringent reliability requirements.
FAQ
What is the exact reset threshold voltage of ADM803ZAKS-REEL and its tolerance over temperature?
The ADM803ZAKS-REEL has a nominal reset threshold of 2.32 V at 25°C, with a guaranteed range of 2.25 V to 2.38 V over −40°C to +85°C and 2.22 V to 2.42 V over −40°C to +125°C. This 2.32 V threshold is optimized for monitoring 2.5 V supply rails with sufficient margin for dropout and ripple.
Does ADM803ZAKS-REEL require an external pull-up resistor on the RESET pin?
Yes, ADM803ZAKS-REEL features an open-drain RESET output and requires an external pull-up resistor to the target logic rail (e.g., 1.8 V, 3.3 V, or 5 V). Typical values range from 10 kΩ to 100 kΩ depending on rise time and bus loading requirements.
Can ADM803ZAKS-REEL operate reliably when VCC drops below 2.0 V?
Yes, ADM803ZAKS-REEL remains fully functional and continues asserting RESET down to VCC = 1.0 V, as specified in its absolute operating range. This ensures deterministic reset behavior during severe brownout conditions common in automotive and battery-powered applications.
What is the power-on reset timeout duration for ADM803ZAKS-REEL?
The ADM803ZAKS-REEL provides a minimum power-on reset timeout of 140 ms, typical of 240 ms, and maximum of 460 ms over −40°C to +85°C. At higher temperatures (85°C to 125°C), the timeout ranges from 100 ms to 840 ms, ensuring robust reset hold time across full industrial and automotive temperature grades.
Is ADM803ZAKS-REEL RoHS compliant and what does the 'Z' suffix indicate?
Yes, ADM803ZAKS-REEL is RoHS compliant, as confirmed by the 'Z' suffix in its part number per Analog Devices' ordering guide. The 'Z' denotes lead-free, halogen-free packaging meeting JEDEC J-STD-020 and IPC/JEDEC J-STD-033 standards.
ADM803ZAKS-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.32V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
ADM803ZAKS-REEL FAQ
1.How can I place an order for ADM803ZAKS-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM803ZAKS-REEL 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 ADM803ZAKS-REEL reliable?
The price and inventory of ADM803ZAKS-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM803ZAKS-REEL is usually 5 days.
3.What payment methods are accepted for ADM803ZAKS-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM803ZAKS-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM803ZAKS-REEL?
ADM803ZAKS-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM803ZAKS-REEL 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 ADM803ZAKS-REEL?
For technical support, including ADM803ZAKS-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM803ZAKS-REEL requirements.
6.How does Aetrix verify that ADM803ZAKS-REEL is sourced from the original manufacturer or authorized distributors?
All ADM803ZAKS-REEL 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 ADM803ZAKS-REEL meets industry standards.
7.What is the process for return or replacement of ADM803ZAKS-REEL?
All ADM803ZAKS-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM803ZAKS-REEL, 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 ADM803ZAKS-REEL part is unused and in its original packaging.
Return procedure for ADM803ZAKS-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM803ZAKS-REEL 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…
