My Inquiry
My Account
Analog Devices Inc. ADM809MARTZ-REEL7
- Part No.:
- ADM809MARTZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM809MARTZ-REEL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,421
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM809MARTZ-REEL7 from Analog Devices is a microprocessor supervisory circuit with push-pull active-low RESET output, 4.38 V reset threshold, −40°C to +125°C operating temperature range, 17 μA supply current, and 240 ms typical reset timeout. It monitors VCC in embedded controllers and ensures reliable power-on reset assertion during brownout conditions.
For engineers reviewing the ADM809MARTZ-REEL7 datasheet, ADM809MARTZ-REEL7 pinout, ADM809MARTZ-REEL7 application, or ADM809MARTZ-REEL7 equivalent, key selection factors include reset threshold accuracy (±2.5% over temperature), operation down to 1 V VCC, SC70/SOT-23 package compatibility, and push-pull drive capability without external pull-up.
Technical Context
The ADM809MARTZ-REEL7 integrates a precision voltage comparator with built-in glitch immunity and an internal 240 ms reset timer. Its reference circuit maintains stable threshold detection across −40°C to +125°C, enabling robust brownout response even under fast VCC transients.
It features a push-pull RESET output capable of sinking 3.2 mA at VTH min and sourcing 800 μA at VTH max, with logic-level compatibility across 1.8 V to 5.5 V VCC. The device asserts RESET low when VCC falls below 4.38 V and holds it for ≥140 ms after VCC rises above threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38 V nominal; ±2.5% tolerance over −40°C to +125°C ensures reliable detection of 4.5 V supply droop. |
| Supply Current | 17 μA typical at VCC < 3.6 V; enables battery-backed or ultra-low-power system monitoring. |
| Reset Timeout | 240 ms typical power-up delay; holds microprocessor in reset until supply stabilizes post-power-on. |
| VCC Operating Range | 1.0 V to 5.5 V; guarantees functional RESET assertion even during deep brownout down to 1 V. |
| RESET Output Type | Push-pull active-low; eliminates need for external pull-up resistor and supports direct CMOS/TTL interfacing. |
| Temperature Range | −40°C to +125°C; qualified for automotive under-hood, industrial control, and harsh-environment applications. |
Pinout & Package
ADM809MARTZ-REEL7 uses a 3-lead SOT-23 (RT-3) package with 1.3 mm × 2.9 mm footprint and 0.95 mm height, compatible with standard reflow profiles and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | 0 V return path for internal comparator and reset generator; must be connected to system ground plane. |
| RESET (Pin 2) | Active-low push-pull output | Drives low during reset condition; sources up to 800 μA when high; interfaces directly to µP /CPLD reset inputs. |
| VCC (Pin 3) | Monitored supply input | Primary power rail being supervised; also powers internal circuitry; valid from 1.0 V to 5.5 V. |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | 4.38 V with ±2.5% max deviation over full temperature range ensures consistent trip point across environments. |
| Low-power operation | 17 μA supply current extends battery life in portable instrumentation and remote sensors. |
| Brownout immunity | Functional down to 1 V VCC allows reset assertion during severe undervoltage events before system collapse. |
| Glitch-immune comparator | Rejects fast transients ≤100 µs duration at VCC, preventing spurious resets in noisy power rails. |
| Wide temperature qualification | −40°C to +125°C operation supports deployment in engine control units and industrial PLCs. |
Applications
| Industrial Motor Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 5 V logic rail in motor drive firmware that requires deterministic restart after power interruption. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to ARM Cortex-M4 MCU during VCC sag below 4.38 V. Use Value: Prevents erratic motor sequencing by guaranteeing 240 ms minimum reset hold time after brownout recovery. | Use Scenario: Embedded in door module PCB where 12 V-to-5 V DC/DC output supplies microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Voltage monitor triggering hardware reset of Infineon AURIX TC275 when 5 V rail drops due to load dump or cold-crank. Use Value: Ensures safe state entry before firmware executes, eliminating race conditions during vehicle start-stop cycles. |
| Medical Patient Monitor | Ruggedized Data Logger |
Use Scenario: Secures boot integrity in battery-powered ECG unit with dual-supply architecture (3.3 V analog, 1.8 V digital). IC Role / Device Role / Timing Role: Resets ADuCM360 precision analog microcontroller when main 3.3 V rail falls below 4.38 V threshold. Use Value: Guarantees clean initialization of ADC calibration routines and avoids corrupted waveform capture on power resumption. | Use Scenario: Deployed in oil-field telemetry node powered by Li-SOCl₂ battery with wide temperature swing (−40°C to +85°C). IC Role / Device Role / Timing Role: Supervises buck converter output feeding MSP430FR5994 MCU; asserts RESET during low-battery cutoff. Use Value: Maintains ±2.5% threshold accuracy across full range, preventing premature shutdown during cold-weather startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2T-T | 4.38 V threshold, SOT-23-3, push-pull active-low RESET, but 20 μA typical supply current and −40°C to +105°C rating. | Limited to commercial/industrial ambient; not qualified for extended automotive temperature range. | Select when cost sensitivity outweighs extended temperature requirement and 3 μA higher quiescent current is acceptable. |
| TPS3808G33DBVR | 3.3 V fixed threshold, SOT-23-6, open-drain RESET, adjustable delay option, 1.6 μA typical supply current. | Requires external pull-up; different pinout and threshold value; suited for lower-voltage systems only. | Choose for ultra-low-power 3.3 V designs where programmable delay and smaller IQ justify added complexity and pin count. |
Compared with MAX809TRD2T-T, ADM809MARTZ-REEL7 offers broader temperature support and lower IQ; versus TPS3808G33DBVR, it provides fixed 4.38 V detection with push-pull simplicity but targets higher-supply systems.
Availability
ADM809MARTZ-REEL7 is available at Aetrix Electronics and suitable for industrial motor controllers, automotive body control modules, and medical patient monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADM809MARTZ-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, serving precision instrumentation, industrial automation, and automotive markets since 1965.
The ADM809 series belongs to Analog Devices' microprocessor supervisory product line, engineered specifically for deterministic power-on reset generation and brownout protection in safety-critical embedded systems.
FAQ
What is the exact reset threshold voltage of ADM809MARTZ-REEL7 and how does it vary with temperature?
The ADM809MARTZ-REEL7 has a nominal reset threshold of 4.38 V, with guaranteed limits of 4.20 V to 4.56 V over the full −40°C to +125°C operating range. This ±2.5% tolerance ensures reliable detection of supply droop in automotive and industrial environments where rail stability is critical. The device's internal reference exhibits 30 ppm/°C temperature coefficient, contributing to tight threshold consistency.
Does ADM809MARTZ-REEL7 require an external pull-up resistor on the RESET pin?
No, ADM809MARTZ-REEL7 does not require an external pull-up resistor because it features a push-pull RESET output. Unlike open-drain variants such as the ADM803, this version actively drives both high and low states - sourcing up to 800 μA when high and sinking up to 3.2 mA when low - enabling direct interface with microcontroller reset inputs without additional components.
Can ADM809MARTZ-REEL7 operate reliably when VCC drops below 2.0 V?
Yes, ADM809MARTZ-REEL7 remains fully functional down to 1.0 V VCC, maintaining accurate reset assertion and timing behavior. Its internal circuitry continues to monitor the supply and assert RESET low as long as VCC stays below 4.38 V, even during deep brownout conditions. This capability is confirmed in the datasheet's Absolute Maximum Ratings and Specifications tables.
What is the package type and lead finish of ADM809MARTZ-REEL7?
ADM809MARTZ-REEL7 uses a 3-lead SOT-23 (JEDEC TO-236-AB, package option RT-3) with RoHS-compliant matte tin lead finish. The "Z" suffix in the part number explicitly denotes RoHS compliance, and the "REEL7" indicates 3,000-unit tape-and-reel packaging optimized for SMT assembly lines.
How does the reset timeout period of ADM809MARTZ-REEL7 behave across temperature?
The ADM809MARTZ-REEL7 guarantees a minimum reset timeout of 140 ms and maximum of 460 ms over −40°C to +85°C, with typical value of 240 ms at 25°C. At elevated temperatures (85°C to 125°C), the timeout range expands to 100 ms to 840 ms. This variation is inherent to the internal RC timing circuit and is fully characterized in the datasheet's Specifications table.
ADM809MARTZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.38V
- 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-23-3
ADM809MARTZ-REEL7 FAQ
1.How can I place an order for ADM809MARTZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM809MARTZ-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 ADM809MARTZ-REEL7 reliable?
The price and inventory of ADM809MARTZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM809MARTZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM809MARTZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM809MARTZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM809MARTZ-REEL7?
ADM809MARTZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM809MARTZ-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 ADM809MARTZ-REEL7?
For technical support, including ADM809MARTZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM809MARTZ-REEL7 requirements.
6.How does Aetrix verify that ADM809MARTZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM809MARTZ-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 ADM809MARTZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM809MARTZ-REEL7?
All ADM809MARTZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM809MARTZ-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 ADM809MARTZ-REEL7 part is unused and in its original packaging.
Return procedure for ADM809MARTZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM809MARTZ-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…
