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Analog Devices Inc. ADM6346-40ARTZ-R7
- Part No.:
- ADM6346-40ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6346-40ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,968
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Product details
Overview
ADM6346-40ARTZ-R7 from Analog Devices is a push-pull microprocessor reset circuit designed to monitor 4.0 V supply rails in embedded systems. It provides accurate reset assertion with ±2.5% threshold tolerance, 100 ms minimum reset timeout, ultralow 1 µA supply current, and guaranteed operation down to 1 V VCC - enabling reliable power-up sequencing in battery-powered portable equipment.
For engineers reviewing the ADM6346-40ARTZ-R7 datasheet, ADM6346-40ARTZ-R7 pinout, ADM6346-40ARTZ-R7 application, or ADM6346-40ARTZ-R7 equivalent, key selection criteria include its 4.0 V reset threshold accuracy, push-pull active-low RESET output, SOT-23-3 package compatibility, −40°C to +85°C operating range, and glitch immunity against negative-going VCC transients.
Technical Context
The ADM6346-40ARTZ-R7 integrates a precision voltage reference, comparator with hysteresis (9.5 mV), and an internal 100–280 ms reset timeout timer. Its push-pull output drives low (≤0.3 V at 1.6 mA) during undervoltage conditions and pulls high to ≥0.8 × VCC when asserted inactive, eliminating need for external pull-up resistors.
This device operates across 1.0 V to 5.5 V supply range and maintains valid reset signaling down to 1 V VCC. Its 40 ppm/°C temperature coefficient ensures stable 4.0 V threshold performance over industrial temperature extremes, while 20 µs typical response time enables fast brownout detection before system logic fails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.0 V ±2.5% (TA = 25°C); ensures precise 4.0 V rail monitoring with minimal false triggering |
| Supply Current | 1.0 µA max at 3.0 V; enables multi-year battery life in always-on portable systems |
| Reset Timeout | 100–280 ms; holds microprocessor in reset long enough for full power stabilization |
| Operating Range | −40°C to +85°C; supports industrial and automotive under-hood environments |
| VCC Range | 1.0 V to 5.5 V; allows reset assertion even during deep brownout or partial power loss |
| Output Type | Active-low push-pull; eliminates external pull-up resistor and simplifies PCB layout |
| Hysteresis | 9.5 mV; prevents oscillation near threshold during slow-rising/falling VCC transitions |
Pinout & Package
ADM6346-40ARTZ-R7 is housed in a JEDEC-compliant 3-lead SOT-23-3 (RT-3) package with 270°C/W junction-to-ambient thermal resistance, optimized for space-constrained PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | 0 V return path for all internal circuitry; must be connected directly to system ground plane |
| RESET (Pin 2) | Active-low push-pull output | Drives low ≤0.3 V (at 1.6 mA) during reset; sources ≥0.8 × VCC when inactive - no external pull-up required |
| VCC (Pin 3) | Monitored supply input | Input voltage source being supervised; also powers internal circuitry - valid from 1.0 V to 5.5 V |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 1 µA maximum supply current enables use in energy-harvesting and coin-cell applications |
| Glitch immunity | Immune to negative-going VCC transients up to 100 µs duration at 100 mV overdrive |
| Precision threshold | 4.0 V nominal with ±2.5% tolerance over temperature ensures consistent reset behavior |
| Wide VCC range | Operates and asserts reset down to 1.0 V VCC - critical for detecting deep brownouts |
| Industrial temp range | −40°C to +85°C operation supports deployment in harsh environmental conditions |
Applications
| Telecom Power Management | Portable Medical Devices |
|---|---|
|
Use Scenario: Monitoring 4.0 V backup battery or PoE-derived rail in base station control modules. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low reset to ARM Cortex-M4 MCU during brownout. Use Value: Prevents firmware corruption by holding processor in reset until 4.0 V rail stabilizes post-transient. |
Use Scenario: Ensuring safe startup of glucose meter SoC powered by single Li-ion cell (nominal 3.7 V). IC Role / Device Role / Timing Role: Reset generator providing 185 ms typical timeout to allow ADC reference settling and sensor initialization. Use Value: Guarantees deterministic boot sequence even as battery voltage drops to 4.0 V threshold during discharge. |
| Industrial PLC I/O Modules | Automotive Infotainment Head Units |
|
Use Scenario: Supervising 4.0 V FPGA configuration rail in programmable logic controller backplane. IC Role / Device Role / Timing Role: Push-pull reset driver interfacing directly with FPGA PROG_B pin without external components. Use Value: Eliminates BOM cost and board area for pull-up resistor while ensuring noise-immune reset signaling. |
Use Scenario: Monitoring 4.0 V domain supplying audio codec and display interface in head unit mainboard. IC Role / Device Role / Timing Role: Brownout detector triggering system-wide reset before DSP core enters undefined state. Use Value: 20 µs response time prevents latch-up or data corruption during engine cranking transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326T40D2-T | 4.0 V threshold, open-drain output, 2.5 µA ICC, same SOT-23-3 package | Requires external pull-up resistor; higher supply current reduces battery life | Select when legacy board design already includes pull-up or when reset line must be wire-OR'd with other sources |
| TPS3808G33DBVR | 3.3 V threshold, push-pull output, 1.1 µA ICC, SOT-23-6 package (different pinout) | Lower threshold incompatible with 4.0 V rail; requires PCB redesign due to 6-pin footprint | Consider only if system voltage is revised to 3.3 V and board layout allows 6-pin replacement |
Compared with MAX6326T40D2-T and TPS3808G33DBVR, the ADM6346-40ARTZ-R7 uniquely combines 4.0 V precision, push-pull drive, and sub-µA quiescent current in a 3-pin SOT-23 - delivering optimal fit for space- and power-constrained 4.0 V monitoring without layout changes.
Availability
ADM6346-40ARTZ-R7 is available at Aetrix Electronics and suitable for telecommunications infrastructure, portable medical instrumentation, industrial PLCs, and automotive infotainment systems requiring stable component supply and long-term production continuity.
Supply support for ADM6346-40ARTZ-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, communications, automotive, and healthcare markets since 1965.
The ADM63xx family was engineered specifically for ultralow-power, precision supply monitoring in battery-operated and thermally demanding embedded systems - prioritizing accuracy, reliability, and minimal board footprint.
FAQ
What is the exact reset threshold voltage of ADM6346-40ARTZ-R7?
The ADM6346-40ARTZ-R7 has a nominal reset threshold of 4.0 V at 25°C, with guaranteed tolerance of ±2.5% over the full −40°C to +85°C operating range. Per Table 2 in the datasheet, the min/max thresholds are 3.90 V to 4.10 V at temperature extremes, ensuring robust 4.0 V rail supervision without false resets.
Does ADM6346-40ARTZ-R7 require an external pull-up resistor on the RESET pin?
No, ADM6346-40ARTZ-R7 does not require an external pull-up resistor because it features an active-low push-pull output. The RESET pin actively drives high to ≥0.8 × VCC when inactive and low to ≤0.3 V when asserted - unlike open-drain variants such as ADM6348-40ARTZ-R7, which do require external pull-up.
Can ADM6346-40ARTZ-R7 operate with supply voltages below 4.0 V?
Yes, ADM6346-40ARTZ-R7 operates from 1.0 V to 5.5 V VCC and continues asserting RESET down to 1.0 V. This means it can supervise a 4.0 V rail while remaining functional even as that rail collapses - a critical capability for detecting and responding to deep brownout events before system failure.
What is the reset timeout duration of ADM6346-40ARTZ-R7?
The ADM6346-40ARTZ-R7 guarantees a minimum reset timeout of 100 ms after VCC rises above the 4.0 V threshold, with typical duration of 185 ms and maximum of 280 ms over temperature. This built-in delay ensures microprocessors and FPGAs have sufficient time to stabilize clocks and references before exiting reset.
Is ADM6346-40ARTZ-R7 RoHS compliant and lead-free?
Yes, ADM6346-40ARTZ-R7 is RoHS compliant and lead-free, as indicated by the "Z" suffix in the part number per Analog Devices' Ordering Guide. It meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for standard reflow soldering processes.
ADM6346-40ARTZ-R7 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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ADM6346-40ARTZ-R7 FAQ
1.How can I place an order for ADM6346-40ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6346-40ARTZ-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 ADM6346-40ARTZ-R7 reliable?
The price and inventory of ADM6346-40ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6346-40ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6346-40ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6346-40ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6346-40ARTZ-R7?
ADM6346-40ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6346-40ARTZ-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 ADM6346-40ARTZ-R7?
For technical support, including ADM6346-40ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6346-40ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6346-40ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6346-40ARTZ-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 ADM6346-40ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6346-40ARTZ-R7?
All ADM6346-40ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6346-40ARTZ-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 ADM6346-40ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6346-40ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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