My Inquiry
My Account
Analog Devices Inc. ADM809ZAKS-REEL
- Part No.:
- ADM809ZAKS-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM809ZAKS-REEL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,714
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM809ZAKS-REEL from Analog Devices is a microprocessor supervisory circuit with push-pull active-low RESET output, 2.32 V reset threshold (±0.07 V over −40°C to +125°C), 140–460 ms power-on reset timeout, 17 μA supply current at VCC < 3.6 V, and SC70-3 package. It monitors supply voltage in embedded controllers during power-up, brownout, and power-down to ensure reliable microprocessor initialization.
For engineers reviewing the ADM809ZAKS-REEL datasheet, ADM809ZAKS-REEL pinout, ADM809ZAKS-REEL application, or ADM809ZAKS-REEL equivalent, key selection considerations include its precise 2.32 V threshold for 2.5 V rail monitoring, −40°C to +125°C industrial temperature range, push-pull output eliminating external pull-up, low 17 μA quiescent current, and SC70-3 footprint compatibility with space-constrained designs.
Technical Context
The ADM809ZAKS-REEL integrates a precision voltage comparator with built-in glitch immunity and an internal 240 ms (typical) reset timer. Its reset assertion remains valid down to VCC = 1.0 V, enabling robust operation during deep brownouts.
It features a fixed 2.32 V reset threshold optimized for 2.5 V systems, with ±0.07 V tolerance over full temperature range and 30 ppm/°C temperature coefficient. The push-pull RESET output drives low to ≤0.3 V at 1.2 mA sink and high to ≥0.8×VCC at 500 μA source, supporting direct interface to CMOS inputs without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32 V (±0.07 V, −40°C to +125°C); precisely monitors 2.5 V rails with margin for dropout |
| Supply Current | 17 μA (typical, VCC < 3.6 V); enables battery-backed or ultra-low-power embedded systems |
| Reset Timeout | 140–460 ms (−40°C to +85°C); ensures microprocessor stabilization before release |
| VCC Operating Range | 1.0 V to 5.5 V; asserts reset even during severe undervoltage conditions |
| Output Type | Push-pull active-low RESET; eliminates need for external pull-up resistor |
| Package | 3-lead SC70 (KS-3); 2.0 mm × 2.1 mm footprint for high-density PCB layouts |
| Temp Range | −40°C to +125°C; qualified for automotive under-hood and industrial control environments |
Pinout & Package
ADM809ZAKS-REEL uses a 3-lead SC70 (KS-3) package with 0.65 mm lead pitch, 2.0 mm × 2.1 mm body, and 0.1 mm coplanarity - optimized for automated assembly and thermal performance (θJA = 146°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for all internal circuitry; must be connected to system ground plane for stable reset timing |
| RESET (Pin 2) | Active-low push-pull output | Drives low (≤0.3 V @ 1.2 mA) during fault; high (≥0.8×VCC) otherwise; directly interfaces to µP /C reset pin |
| VCC (Pin 3) | Monitored supply input | Connects to 2.5 V rail being supervised; powers internal circuitry and enables reset assertion down to 1.0 V |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.32 V threshold | Guaranteed ±0.07 V tolerance across −40°C to +125°C, enabling accurate 2.5 V rail supervision without calibration |
| Push-pull RESET output | Eliminates external pull-up resistor, reducing BOM count and PCB area in space-constrained applications |
| 17 μA supply current | Supports always-on monitoring in battery-powered IoT nodes and portable instrumentation without significant drain |
| Reset valid to 1.0 V VCC | Ensures deterministic reset assertion during deep brownout events where other supervisors fail |
| Built-in glitch immunity | Rejects fast transients up to 100 mV overdrive, preventing false resets on noisy power rails |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 2.5 V logic supply in programmable logic controller CPU board subject to load switching and EMI. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low RESET to ARM Cortex-M7 core until 2.5 V rail stabilizes post-power-up. Use Value: Prevents firmware corruption by guaranteeing 240 ms minimum reset hold time and rejecting 100 mV transients per datasheet Figure 11. | Use Scenario: Secures boot sequence of microcontroller in door module exposed to cold cranking (4.5 V) and load dump (18 V) conditions. IC Role / Device Role / Timing Role: Voltage monitor detecting undervoltage on 2.5 V LDO output feeding CAN transceiver and sensor interface ASIC. Use Value: Operates reliably from −40°C to +125°C and asserts reset down to 1.0 V VCC, ensuring safe shutdown during battery sag. |
| Medical Infusion Pump | Smart Energy Meter |
Use Scenario: Ensures deterministic startup of safety-critical MCU after AC/DC power interruption or battery switchover. IC Role / Device Role / Timing Role: Reset generator providing 240 ms (typ) power-on reset pulse synchronized to 2.5 V analog front-end supply. Use Value: 30 ppm/°C tempco and ±0.07 V threshold tolerance prevent spurious resets during ambient temperature cycling. | Use Scenario: Supervises isolated 2.5 V rail powering metrology ADC and real-time clock in utility-grade meter. IC Role / Device Role / Timing Role: Precision voltage detector triggering hardware reset if 2.5 V supply drops below 2.25 V during grid instability. Use Value: Low 17 μA quiescent current minimizes self-heating error in metrology section while maintaining Class 0.2 accuracy. |
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, 1.2 μA max supply current, 140 ms min reset timeout | Lacks extended −40°C to +125°C qualification; rated only to +85°C | Select when cost sensitivity outweighs extended temperature requirement and SOT-23 footprint is preferred |
| TPS3809K33DBVR | 3.08 V threshold (not 2.32 V), SOT-23-3, 1.6 μA supply current, 200 ms min reset timeout | Designed for 3.3 V rails; incompatible for 2.5 V supervision without external resistor divider | Choose only if redesigning to 3.3 V supply or adding external scaling network is acceptable |
Compared with MAX809ZTR and TPS3809K33DBVR, ADM809ZAKS-REEL uniquely combines 2.32 V threshold, −40°C to +125°C operation, and SC70-3 packaging - making it the sole option for compact, high-reliability 2.5 V rail supervision in harsh environments without layout or BOM changes.
Availability
ADM809ZAKS-REEL is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical infusion pumps, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM809ZAKS-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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADM809 series belongs to Analog Devices' precision supervisory IC product line, engineered specifically for deterministic power-on reset generation and brownout protection in mission-critical embedded systems operating across extreme temperatures.
FAQ
What is the exact reset threshold voltage of ADM809ZAKS-REEL and how does it vary with temperature?
The ADM809ZAKS-REEL has a nominal reset threshold of 2.32 V at 25°C, with guaranteed limits 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. Its temperature coefficient is 30 ppm/°C, meaning threshold drift is ≤±0.003 V across a 100°C span - critical for stable 2.5 V rail supervision in automotive and industrial applications where ADM809ZAKS-REEL operates.
Does ADM809ZAKS-REEL require an external pull-up resistor on the RESET pin?
No, ADM809ZAKS-REEL features a push-pull RESET output, unlike the open-drain ADM803. It actively drives high (≥0.8×VCC) and low (≤0.3 V at 1.2 mA) without external components. This simplifies design, reduces BOM count, and improves noise immunity - a key differentiator confirmed in the ADM809/ADM810 functional description and pin table, where ADM809ZAKS-REEL's RESET pin is explicitly defined as push-pull.
What is the minimum VCC voltage at which ADM809ZAKS-REEL continues to assert RESET?
ADM809ZAKS-REEL guarantees RESET assertion down to VCC = 1.0 V at −40°C to +85°C and 1.2 V at −40°C to +125°C, per Absolute Maximum Ratings and General Description. This ensures fail-safe behavior during deep brownouts where other supervisors lose functionality - a core reliability feature of ADM809ZAKS-REEL enabling robust operation in automotive and industrial power systems.
Can ADM809ZAKS-REEL be used in place of ADM809ZART-REEL?
Yes, ADM809ZAKS-REEL and ADM809ZART-REEL share identical electrical specifications (2.32 V threshold, push-pull output, −40°C to +125°C range) but differ in package: ADM809ZAKS-REEL uses SC70-3 (KS-3), while ADM809ZART-REEL uses SOT-23-3 (RT-3). They are functionally interchangeable for 2.5 V supervision, but PCB layout must match the respective 2.0×2.1 mm SC70 or 2.9×1.3 mm SOT-23 footprint - ADM809ZAKS-REEL is not a drop-in replacement without board revision.
What is the typical supply current of ADM809ZAKS-REEL and under what conditions is it measured?
The typical supply current of ADM809ZAKS-REEL is 17 μA, measured at VCC < 3.6 V and TA = −40°C to +85°C, per Table 1 in the datasheet. This ultra-low quiescent current enables continuous monitoring in battery-powered devices like portable medical instruments and wireless sensors - a defining characteristic of ADM809ZAKS-REEL that supports multi-year operation on coin cells.
ADM809ZAKS-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:
- 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:
- SC-70-3
ADM809ZAKS-REEL FAQ
1.How can I place an order for ADM809ZAKS-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM809ZAKS-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 ADM809ZAKS-REEL reliable?
The price and inventory of ADM809ZAKS-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM809ZAKS-REEL is usually 5 days.
3.What payment methods are accepted for ADM809ZAKS-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM809ZAKS-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM809ZAKS-REEL?
ADM809ZAKS-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM809ZAKS-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 ADM809ZAKS-REEL?
For technical support, including ADM809ZAKS-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM809ZAKS-REEL requirements.
6.How does Aetrix verify that ADM809ZAKS-REEL is sourced from the original manufacturer or authorized distributors?
All ADM809ZAKS-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 ADM809ZAKS-REEL meets industry standards.
7.What is the process for return or replacement of ADM809ZAKS-REEL?
All ADM809ZAKS-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADM809ZAKS-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 ADM809ZAKS-REEL part is unused and in its original packaging.
Return procedure for ADM809ZAKS-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM809ZAKS-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…
