My Inquiry
My Account
Analog Devices Inc. ADM809RAKSZ-REEL7
- Part No.:
- ADM809RAKSZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ADM809RAKSZ-REEL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,345
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM809RAKSZ-REEL7 from Analog Devices is a microprocessor supervisory circuit with push-pull active-low RESET output, 2.63 V reset threshold (±0.04 V at 25°C), 240 ms typical power-on reset timeout, and operation down to 1 V VCC. It monitors 2.5 V–3.3 V supply rails in embedded controllers and portable instrumentation.
For engineers reviewing the ADM809RAKSZ-REEL7 datasheet, ADM809RAKSZ-REEL7 pinout, ADM809RAKSZ-REEL7 application, or ADM809RAKSZ-REEL7 equivalent, key selection criteria include reset threshold accuracy over −40°C to +125°C, low 17 μA supply current, SC70-3 package footprint, and compatibility with 3 V logic interfaces requiring active-low push-pull assertion.
Technical Context
The ADM809RAKSZ-REEL7 integrates a precision voltage comparator with built-in glitch immunity and an internal 240 ms reset timer. Its reference circuit maintains ±0.08 V threshold tolerance across −40°C to +125°C, enabling reliable brownout detection even during fast VCC transients.
It features a push-pull RESET output capable of sinking 1.2 mA at 0.3 V (VCC = VTH min) and sourcing 500 μA at 0.8×VCC, eliminating external pull-up components required by open-drain variants like the ADM803.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63 V (typical at 25°C); accurate monitoring of 2.5 V/2.7 V supplies with ±0.08 V variation over full temperature range |
| Supply Current | 17 μA (typical at VCC < 3.6 V); enables battery-powered operation without significant quiescent drain |
| Reset Timeout | 240 ms (typical); ensures microprocessor initialization completes before release from reset state |
| VCC Operating Range | 1.0 V to 5.5 V; guarantees functional reset assertion even during deep brownout conditions |
| Output Type | Push-pull active-low; drives CMOS/TTL inputs directly without external pull-up resistor |
| Temperature Range | −40°C to +125°C; qualified for automotive under-hood and industrial control environments |
| Package | 3-lead SC70 (KS-3); 2.0 mm × 2.1 mm footprint compatible with high-density PCB layouts |
Pinout & Package
ADM809RAKSZ-REEL7 uses a 3-lead SC70 (KS-3) package with 0.65 mm lead pitch and coplanarity ≤0.10 mm. The device has no exposed pad and is RoHS compliant (Z suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and timer; must be connected to system ground plane |
| 2 | RESET | Active-low push-pull output; asserts low during power-up/brownout and holds for 240 ms after VCC exceeds threshold |
| 3 | VCC | Monitored supply input; powers internal circuitry and defines reset assertion level via internal reference |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 2.63 V ±0.04 V at 25°C, ±0.08 V over −40°C to +125°C - eliminates need for external trimming in 2.5 V rail monitoring |
| Glitch-immune comparator | Rejects transients up to 200 mV overdrive for ≤100 μs - prevents false resets during switching noise |
| Low-voltage operation | Functional RESET assertion down to VCC = 1.0 V - supports ultra-low-power wake-up sequencing |
| Push-pull output drive | Sinks 1.2 mA at 0.3 V and sources 500 μA at 0.8×VCC - interfaces directly with 3 V microcontrollers without pull-up |
| Ultra-low quiescent current | 17 μA typical at VCC < 3.6 V - extends battery life in portable medical and sensor nodes |
Applications
| Industrial PLC Controller | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 2.5 V FPGA configuration supply during cold start and brownout events. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to hold FPGA in configuration-safe state until supply stabilizes. Use Value: 240 ms guaranteed timeout prevents premature configuration load; 2.63 V threshold matches 2.5 V rail tolerance band. |
Use Scenario: Ensures reliable boot of ARM Cortex-M4 MCU in battery-powered ECG device. IC Role / Device Role / Timing Role: Power-on reset generator with VCC monitoring down to 1.0 V during battery discharge. Use Value: 17 μA supply current minimizes standby drain; push-pull output eliminates pull-up resistor, saving board space. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: Supervises 3.3 V microcontroller supply in under-dash environment with wide thermal swing. IC Role / Device Role / Timing Role: High-temperature-rated reset supervisor maintaining valid assertion from −40°C to +125°C. Use Value: ±0.08 V threshold drift over temperature avoids spurious resets during engine heat soak cycles. |
Use Scenario: Provides fail-safe reset for metrology SoC during AC line sags and capacitor discharge. IC Role / Device Role / Timing Role: Brownout detector asserting RESET when 2.5 V LDO output drops below 2.63 V threshold. Use Value: Glitch-immune comparator ignores 50 ns switching spikes on 2.5 V rail from isolated DC-DC converter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809RTRG+T | 2.63 V threshold, SOT-23-3 package, 1.2 μA max supply current at 25°C (vs. ADM809RAKSZ-REEL7's 17 μA) | Lower quiescent current but narrower operating temperature range (−40°C to +85°C vs. +125°C) | Select for cost-sensitive consumer applications where extended temperature qualification is unnecessary |
| TPS3808G12DBVR | 1.2 V fixed threshold (not adjustable); requires external resistor divider for 2.63 V monitoring | Supports programmable delay (0–10 s) but lacks integrated 240 ms timeout; higher BOM count | Choose only if variable reset timeout or multi-rail supervision is required alongside 2.63 V monitoring |
Compared with MAX809RTRG+T, ADM809RAKSZ-REEL7 offers superior high-temperature reliability for automotive/industrial use; compared with TPS3808G12DBVR, it delivers plug-and-play 2.63 V supervision without external components or configuration overhead.
Availability
ADM809RAKSZ-REEL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, automotive body control modules, smart energy meters, and battery-backed instrumentation requiring stable component supply across extended temperature ranges.
Supply support for ADM809RAKSZ-REEL7 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, headquartered in Norwood, MA.
The ADM809RAKSZ-REEL7 belongs to the ADM803/ADM809/ADM810 family of microprocessor supervisory circuits, designed specifically for robust power-on reset and brownout protection in space-constrained, thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of ADM809RAKSZ-REEL7 and how does it vary with temperature?
The ADM809RAKSZ-REEL7 has a nominal reset threshold of 2.63 V at 25°C, with a guaranteed range of 2.55 V to 2.70 V over −40°C to +85°C and 2.52 V to 2.74 V over −40°C to +125°C. This tight tolerance ensures precise 2.5 V supply monitoring without calibration, critical for deterministic system startup in industrial and automotive applications where ADM809RAKSZ-REEL7 is deployed.
Does ADM809RAKSZ-REEL7 require an external pull-up resistor on its RESET pin?
No, ADM809RAKSZ-REEL7 features a push-pull RESET output, unlike the open-drain ADM803. It actively drives both high and low states, sourcing up to 500 μA at 0.8×VCC and sinking 1.2 mA at 0.3 V, enabling direct interface with 3 V microcontrollers without external components - a key design advantage confirmed in the ADM809RAKSZ-REEL7 datasheet Figure 3 and Table 1.
What is the minimum VCC voltage at which ADM809RAKSZ-REEL7 continues to assert RESET?
ADM809RAKSZ-REEL7 maintains valid RESET assertion down to VCC = 1.0 V, as specified in the Absolute Maximum Ratings table and General Description section. Below this, the output enters high-impedance; however, for reliable operation down to 0 V, a 100 kΩ pull-down is recommended per Figure 12 - a behavior explicitly documented for ADM809RAKSZ-REEL7 and shared across the ADM809 family.
Is ADM809RAKSZ-REEL7 pin-compatible with other devices in the ADM803/ADM809/ADM810 family?
Yes, ADM809RAKSZ-REEL7 shares identical 3-lead SC70 pinout (GND, RESET, VCC) with all ADM803/ADM809/ADM810 variants in KS-3 packaging, including ADM803RAKSZ-REEL7 and ADM810RAKSZ-REEL7. Pin compatibility is confirmed in Figure 3 and Table 4 of the ADM809RAKSZ-REEL7 datasheet, though output polarity differs between ADM809 (active-low) and ADM810 (active-high).
What is the typical supply current of ADM809RAKSZ-REEL7 and how does it impact battery life?
ADM809RAKSZ-REEL7 draws 17 μA typical supply current at VCC < 3.6 V and −40°C to +85°C, rising to 60 μA at 85°C to 125°C. In a 10-year battery-powered application drawing 17 μA continuously, this consumes ~1.5 Ah - making ADM809RAKSZ-REEL7 suitable for long-life portable instrumentation where low quiescent current is essential for system-level energy budgeting.
ADM809RAKSZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
ADM809RAKSZ-REEL7 FAQ
1.How can I place an order for ADM809RAKSZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM809RAKSZ-REEL7 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 ADM809RAKSZ-REEL7 reliable?
The price and inventory of ADM809RAKSZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM809RAKSZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM809RAKSZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM809RAKSZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM809RAKSZ-REEL7?
ADM809RAKSZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM809RAKSZ-REEL7 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 ADM809RAKSZ-REEL7?
For technical support, including ADM809RAKSZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM809RAKSZ-REEL7 requirements.
6.How does Aetrix verify that ADM809RAKSZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM809RAKSZ-REEL7 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 ADM809RAKSZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM809RAKSZ-REEL7?
All ADM809RAKSZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM809RAKSZ-REEL7, 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 ADM809RAKSZ-REEL7 part is unused and in its original packaging.
Return procedure for ADM809RAKSZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM809RAKSZ-REEL7 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…
