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Analog Devices Inc. ADM6346-34ARTZ-R7
- Part No.:
- ADM6346-34ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6346-34ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,937
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Product details
Overview
ADM6346-34ARTZ-R7 from Analog Devices is an ultralow-power, push-pull microprocessor reset circuit in a 3-lead SOT-23 package, monitoring 3.4 V supply rails with ±2.5% threshold accuracy over −40°C to +85°C, 1 µA max supply current, and 100 ms minimum reset timeout-used for reliable power-up sequencing in portable microprocessor systems.
For engineers reviewing the ADM6346-34ARTZ-R7 datasheet, ADM6346-34ARTZ-R7 pinout, ADM6346-34ARTZ-R7 application, or ADM6346-34ARTZ-R7 equivalent, key selection criteria include reset threshold tolerance, push-pull output drive capability, glitch immunity against VCC transients, and compatibility with low-voltage brownout detection in battery-powered embedded designs.
Technical Context
The ADM6346-34ARTZ-R7 integrates a precision voltage reference, comparator with hysteresis (9.5 mV), and a 100 ms–280 ms internal reset timeout timer. It asserts active-low RESET within 20 µs when VCC drops below 3.4 V ±2.5%, and maintains valid output down to VCC = 1 V.
This device operates across 1.0 V to 5.5 V supply range, delivers push-pull RESET capable of sourcing 800 µA at VCC ≥ 4.5 V, and exhibits 40 ppm/°C temperature coefficient on threshold voltage-ensuring stable reset behavior under thermal stress in industrial and portable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.4 V ±2.5% (TA = 25°C); ensures accurate brownout detection for 3.3 V nominal rails with margin. |
| Supply Current | 1.0 µA max at VCC = 3.2 V; enables multi-year operation in coin-cell–powered IoT sensors. |
| Reset Timeout | 100–280 ms; guarantees sufficient hold time for microprocessor core and PLL stabilization during cold start. |
| Operating Temp | −40°C to +85°C; supports deployment in automotive cabin electronics and industrial edge controllers. |
| VCC Range | 1.0 V to 5.5 V; allows reset assertion even during deep brownout, preserving system integrity below logic supply. |
| Output Type | Active-low push-pull; eliminates need for external pull-up resistor and simplifies interface to FPGA/microcontroller reset pins. |
| Hysteresis | 9.5 mV; prevents oscillatory reset toggling near threshold during slow-ramping or noisy supply conditions. |
Pinout & Package
ADM6346-34ARTZ-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 internal reference and comparator; must be connected directly to system ground plane. |
| RESET (Pin 2) | Active-low push-pull output | Drives low during power-up/brownout; sinks 1.6 mA at VCC > 2.1 V; sources 800 µA at VCC ≥ 4.5 V. |
| VCC (Pin 3) | Monitored supply input | Input voltage sensed for reset generation; functional down to 1.0 V, enabling fail-safe operation during severe undervoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 1.0 µA max ensures negligible impact on battery life in always-on wearable and sensor nodes. |
| Glitch-immune sensing | Rejects negative VCC transients ≤100 µs duration without false reset assertion-critical for noisy DC-DC outputs. |
| Precision threshold | 3.4 V ±2.5% over full temperature range avoids premature or delayed reset in thermally varying enclosures. |
| Wide VCC operating range | 1.0 V to 5.5 V enables use with Li-ion, LiPo, and multi-rail systems without auxiliary biasing. |
| Robust reset timing | 185 ms typical timeout (−40°C to +85°C) provides deterministic delay independent of external components. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered glucose monitors and pulse oximeters requiring guaranteed startup integrity after cold boot or battery insertion. IC Role / Device Role / Timing Role: Monitors 3.3 V LDO output and asserts RESET until rail stabilizes above 3.4 V, holding MCU in reset for ≥100 ms. Use Value: Prevents firmware execution before ADC reference and analog front-end settle, eliminating erroneous readings on first measurement cycle. |
Use Scenario: DIN-rail mounted PLC modules exposed to wide ambient temperature swings and 24 V DC field supply ripple. IC Role / Device Role / Timing Role: Supervises 3.3 V logic rail derived from switching regulator; triggers system-wide reset on brownout below 3.4 V. Use Value: Ensures deterministic recovery from transient dips caused by solenoid switching, avoiding corrupted I/O state transitions. |
| Automotive Infotainment Head Units | Edge AI Accelerator Cards |
|
Use Scenario: Low-power wake-up circuits in head units that must initialize DSP and display controller only after stable 3.3 V rail. IC Role / Device Role / Timing Role: Provides clean, glitch-free reset signal synchronized to 3.3 V rail ramp; push-pull output drives multiple ASIC reset inputs. Use Value: Eliminates need for discrete RC network and reduces BOM count while meeting AEC-Q200–aligned reliability targets. |
Use Scenario: Compact PCIe-based AI inference cards using heterogeneous SoCs where power sequencing must prevent configuration lockup. IC Role / Device Role / Timing Role: Monitors auxiliary 3.3 V supply feeding FPGA configuration memory and ML accelerator core logic. Use Value: Guarantees FPGA reconfiguration completes before accelerator firmware loads, preventing bitstream corruption or bus hang. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326TRD34+T | 3.4 V threshold, open-drain output, 1.5 µA max ICC, same SOT-23-3 package. | Requires external pull-up; less suitable for driving multiple reset inputs without buffering. | Select when interfacing with bidirectional microprocessor reset pins or shared reset buses. |
| TPS3808G33DBVR | 3.3 V threshold (not 3.4 V), push-pull output, 1.1 µA max ICC, 200 ms fixed timeout, SOT-23-6 package. | Larger footprint and different pinout; tighter 3.3 V threshold may trigger earlier on 3.3 V ±5% rails. | Choose if design already uses TPS3808 family and requires identical timeout behavior across multiple voltage rails. |
Compared with MAX6326TRD34+T and TPS3808G33DBVR, the ADM6346-34ARTZ-R7 offers exact 3.4 V threshold alignment for 3.3 V systems with margin, push-pull drive without external components, and superior glitch immunity-making it optimal for compact, single-rail reset supervision where layout area and component count are constrained.
Availability
ADM6346-34ARTZ-R7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive infotainment head units, and edge AI accelerator cards requiring stable component supply with RoHS-compliant packaging and extended temperature support.
Supply support for ADM6346-34ARTZ-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, automotive, communications, and healthcare markets since 1965.
The ADM63xx series was designed specifically for ultralow-power, precision supply monitoring in battery-operated and thermally demanding embedded systems-emphasizing accuracy, stability, and minimal quiescent current.
FAQ
What is the exact reset threshold voltage of ADM6346-34ARTZ-R7?
The ADM6346-34ARTZ-R7 has a nominal reset threshold of 3.4 V at 25°C, with guaranteed tolerance of ±2.5% over the full operating temperature range (−40°C to +85°C). This means the actual trip point falls between 3.315 V and 3.485 V under worst-case conditions, ensuring robust detection of 3.3 V rail brownouts while avoiding false triggers from normal ripple.
Does ADM6346-34ARTZ-R7 require an external pull-up resistor?
No, ADM6346-34ARTZ-R7 features an active-low push-pull RESET output and does not require an external pull-up resistor. It can source up to 800 µA at VCC ≥ 4.5 V and sink 1.6 mA at VCC > 2.1 V, enabling direct connection to microcontroller, FPGA, or ASIC reset inputs without additional components.
Can ADM6346-34ARTZ-R7 operate with supply voltages below 3.3 V?
Yes, ADM6346-34ARTZ-R7 operates from 1.0 V to 5.5 V and maintains valid RESET output functionality down to VCC = 1.0 V. Its internal circuitry remains active and asserts RESET correctly even during deep brownout conditions, making it suitable for ultra-low-voltage backup domains and energy-harvesting systems.
What is the reset timeout duration of ADM6346-34ARTZ-R7?
The ADM6346-34ARTZ-R7 guarantees a minimum reset timeout of 100 ms after VCC rises above the threshold, with typical duration of 185 ms and maximum of 280 ms over temperature. This fixed internal timer eliminates dependency on external RC networks and ensures consistent power-up sequencing across production units and environmental conditions.
Is ADM6346-34ARTZ-R7 RoHS compliant and lead-free?
Yes, ADM6346-34ARTZ-R7 is RoHS compliant and lead-free, as indicated by the "Z" suffix in its part number per Analog Devices' ordering guide. It meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified for standard reflow soldering processes without special handling requirements.
ADM6346-34ARTZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.4V
- 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
ADM6346-34ARTZ-R7 FAQ
1.How can I place an order for ADM6346-34ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6346-34ARTZ-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 ADM6346-34ARTZ-R7 reliable?
The price and inventory of ADM6346-34ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6346-34ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6346-34ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6346-34ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6346-34ARTZ-R7?
ADM6346-34ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6346-34ARTZ-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 ADM6346-34ARTZ-R7?
For technical support, including ADM6346-34ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6346-34ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6346-34ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6346-34ARTZ-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 ADM6346-34ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6346-34ARTZ-R7?
All ADM6346-34ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6346-34ARTZ-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 ADM6346-34ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6346-34ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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