My Inquiry
My Account
Analog Devices Inc. ADM6322C46ARJZ-RL7
- Part No.:
- ADM6322C46ARJZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ADM6322C46ARJZ-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,616
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM6322C46ARJZ-RL7 from Analog Devices is a supervisory circuit with manual reset and open-drain active-low reset output, designed for microprocessor supply voltage monitoring. It features a 4.63 V reset threshold (±2.5% over −40°C to +85°C), 140 ms minimum reset timeout, no watchdog timer, and operates down to VCC = 1 V with 5 µA typical supply current in 5-lead SOT-23 package. It is used in embedded controllers where reliable power-on and brownout reset assertion is required.
For engineers reviewing the ADM6322C46ARJZ-RL7 datasheet, ADM6322C46ARJZ-RL7 pinout, ADM6322C46ARJZ-RL7 application, or ADM6322C46ARJZ-RL7 equivalent, key selection criteria include its open-drain RESET output requiring external pull-up, absence of watchdog functionality, manual reset input with internal 52 kΩ pull-up, and guaranteed reset validity at VCC ≥ 1 V - critical for low-voltage portable and industrial control systems.
Technical Context
The ADM6322C46ARJZ-RL7 implements a precision voltage monitor with hysteresis (3 mV) and temperature coefficient of 40 ppm/°C, ensuring stable reset assertion across industrial temperature range (−40°C to +85°C). Its reset generator asserts active-low output when VCC falls below 4.63 V or when MR is pulsed low for ≥1 µs, holding reset for ≥140 ms after recovery.
Unlike watchdog-equipped variants (e.g., ADM6320/ADM6321), ADM6322C46ARJZ-RL7 omits WDI functionality entirely - confirmed by device selection table and functional block diagram. Its open-drain RESET output requires an external pull-up resistor (typically 10 kΩ) to a logic rail ≤6 V, enabling level-shifting and wired-OR configurations in multi-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63 V ±2.5% over −40°C to +85°C - sets precise brownout detection point for 5 V nominal rails. |
| Reset Timeout | 140 ms minimum - ensures sufficient reset pulse width for full microprocessor initialization. |
| Supply Current | 5 µA typical at VCC = 3.6 V - enables integration into battery-powered portable equipment. |
| Operating Voltage Range | 1 V to 5.5 V - guarantees valid reset output even during deep brownout conditions. |
| Output Type | Open-drain active-low RESET - supports flexible interface with diverse logic families and shared reset buses. |
| Manual Reset Input | MR with 52 kΩ internal pull-up and 100 ns glitch rejection - allows push-button reset without external components. |
| Reset Hysteresis | 3 mV - prevents oscillation near threshold during slow VCC recovery. |
Pinout & Package
ADM6322C46ARJZ-RL7 is housed in a 5-lead SOT-23 (RJ-5) package per JEDEC MO-178-AA, with 1.3 mm max height and 2.9 mm × 1.6 mm footprint - suitable for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active low) | Open-drain output requiring external pull-up; sinks ≥1.2 mA at VCC ≥ 2.7 V for robust logic-low assertion. |
| 2 | GND | Ground reference for all internal comparators and reset timing circuits. |
| 3 | MR (active low) | Manual reset input with internal 52 kΩ pull-up; accepts ≥1 µs low pulse to trigger reset regardless of VCC state. |
| 4 | VCC | Monitored power supply input; reset asserted when VCC drops below 4.63 V or during power-up until timeout expires. |
| 5 | NC | No connect - internally unconnected; must be left floating or tied to GND per datasheet recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| Reset threshold accuracy | ±2.5% over full temperature range - eliminates need for external trimming in production calibration. |
| Low-power operation | 5 µA typical supply current - extends battery life in portable instrumentation and IoT edge nodes. |
| Guaranteed reset validity | Valid down to VCC = 1 V - ensures deterministic reset behavior during severe undervoltage events. |
| Integrated MR debounce | 100 ns glitch rejection on MR pin - removes need for external RC filtering in noisy industrial environments. |
| Open-drain flexibility | RESET output compatible with 1.8 V to 5 V logic rails via external pull-up - simplifies mixed-voltage system design. |
Applications
| Industrial PLC Controller | Medical Patient Monitor |
|---|---|
|
Use Scenario: Power supply supervision during mains-to-battery switchover in programmable logic controller modules. IC Role / Device Role / Timing Role: Monitors 5 V system rail and asserts open-drain RESET to hold CPU in reset until stable; MR enables field-service hard reset. Use Value: Prevents corrupted firmware execution during transient brownouts, with 140 ms timeout ensuring full FPGA configuration completion before release. |
Use Scenario: Ensuring safe boot sequence in battery-powered vital signs monitors with dual 3.3 V and 5 V domains. IC Role / Device Role / Timing Role: Provides VCC-monitored reset to microcontroller and open-drain RESET output pulled to 3.3 V for peripheral ICs. Use Value: Guarantees reset assertion at VCC ≥ 1 V, enabling fail-safe shutdown before lithium battery drops below 3.0 V cutoff. |
| Smart Energy Meter | Automotive Body Control Module |
|
Use Scenario: Supervising auxiliary 5 V supply derived from vehicle battery in residential smart meter designs. IC Role / Device Role / Timing Role: Detects dips below 4.63 V caused by load switching transients and asserts RESET to prevent EEPROM write corruption. Use Value: 3 mV hysteresis avoids chatter during slow VCC recovery; MR pin allows utility technician reset via test port. |
Use Scenario: Reset coordination between MCU and CAN transceiver during cold-cranking (battery dip to 6 V). IC Role / Device Role / Timing Role: Monitors 5 V domain and drives shared open-drain RESET bus that holds both MCU and transceiver in reset. Use Value: Open-drain output enables wired-OR with other supervisors; 5 µA quiescent current minimizes parasitic drain on vehicle battery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADM6319C46ARJZ-RL7 | Same 4.63 V threshold, 140 ms timeout, and SOT-23 package, but features dual push-pull RESET/RESET outputs instead of open-drain. | Requires separate logic-level handling for active-high and active-low reset signals; not suitable for wired-OR bus topologies. | Select when system needs simultaneous active-high and active-low reset assertions without external inverters. |
| MAX6322CS31+T | Maxim Integrated part with identical 4.63 V threshold, 140 ms timeout, open-drain RESET, and manual reset; differs in MR threshold (0.8–2.0 V vs. 0.3×VCC/0.7×VCC) and supply current (2.5 µA typ). | Higher noise immunity on MR due to fixed voltage threshold; lower quiescent current benefits ultra-low-power designs. | Select when MR noise immunity in high-EMI automotive environments is prioritized over Analog Devices' established qualification history. |
Compared with ADM6322C46ARJZ-RL7, ADM6319C46ARJZ-RL7 offers dual push-pull outputs for synchronous reset distribution but lacks bus-sharing capability, while MAX6322CS31+T provides lower supply current and fixed-threshold MR for enhanced noise margin - making each suitable for distinct board-level architecture constraints.
Availability
ADM6322C46ARJZ-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, medical patient monitors, smart energy meters, and automotive body control modules requiring stable component supply with guaranteed long-term availability.
Supply support for ADM6322C46ARJZ-RL7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADM63xx family was engineered specifically for robust power-supply supervision in microprocessor-based systems, emphasizing precision threshold accuracy, low quiescent current, and industrial-grade reliability across temperature and voltage extremes.
FAQ
What is the reset threshold voltage of the ADM6322C46ARJZ-RL7?
The ADM6322C46ARJZ-RL7 has a nominal reset threshold of 4.63 V, with tolerance of ±2.5% over the industrial temperature range (−40°C to +85°C). This value is confirmed in Table 5 of the Rev. I datasheet and corresponds to reset threshold number 46. The ADM6322C46ARJZ-RL7 uses this fixed threshold to assert RESET when VCC falls below this level, ensuring compatibility with standard 5 V power rails.
Does the ADM6322C46ARJZ-RL7 include a watchdog timer?
No, the ADM6322C46ARJZ-RL7 does not include a watchdog timer. Per Table 1 and the device selection matrix, ADM6322 is defined as having "No" watchdog input (WDI) and "Yes" manual reset (MR), distinguishing it from ADM6320/ADM6321. The ADM6322C46ARJZ-RL7 relies solely on voltage monitoring and MR for reset generation - a deliberate design choice for applications where software-level watchdog supervision is handled externally.
What is the function of Pin 5 (NC) on the ADM6322C46ARJZ-RL7?
Pin 5 on the ADM6322C46ARJZ-RL7 is designated NC (no connect) and is internally unconnected. The datasheet explicitly states it must be left floating or tied to GND - it serves no electrical function and carries no risk of damage if grounded. This pin assignment is consistent across all ADM6322 variants and reflects package pinout standardization within the ADM63xx family's 5-lead SOT-23 layout.
What is the minimum reset timeout period for the ADM6322C46ARJZ-RL7?
The ADM6322C46ARJZ-RL7 has a minimum reset timeout period of 140 ms, corresponding to the "C" suffix in its ordering code. This value is specified in Table 6 and verified in the "Reset Timeout Period" row of Table 2 (140 ms min / 200 ms typ / 280 ms max). The ADM6322C46ARJZ-RL7 holds RESET asserted for at least this duration after VCC rises above 4.63 V, ensuring reliable microprocessor initialization.
How does the manual reset (MR) input behave on the ADM6322C46ARJZ-RL7?
The MR input on the ADM6322C46ARJZ-RL7 is active-low with an internal 52 kΩ pull-up resistor, requiring a ≥1 µs low pulse to trigger reset. Its threshold is VTH-dependent: for VTH > 4.0 V (as with 4.63 V), MR triggers at 0.8–2.0 V; for lower thresholds, it follows 0.3×VCC/0.7×VCC. Glitch rejection is 100 ns, and MR-to-RESET delay is 230 ns at VCC = 5 V. This behavior is fully documented in Table 2 and Figure 11 of the ADM6322C46ARJZ-RL7 datasheet.
ADM6322C46ARJZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
ADM6322C46ARJZ-RL7 FAQ
1.How can I place an order for ADM6322C46ARJZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6322C46ARJZ-RL7 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 ADM6322C46ARJZ-RL7 reliable?
The price and inventory of ADM6322C46ARJZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6322C46ARJZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM6322C46ARJZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6322C46ARJZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6322C46ARJZ-RL7?
ADM6322C46ARJZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6322C46ARJZ-RL7 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 ADM6322C46ARJZ-RL7?
For technical support, including ADM6322C46ARJZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6322C46ARJZ-RL7 requirements.
6.How does Aetrix verify that ADM6322C46ARJZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM6322C46ARJZ-RL7 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 ADM6322C46ARJZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM6322C46ARJZ-RL7?
All ADM6322C46ARJZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6322C46ARJZ-RL7, 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 ADM6322C46ARJZ-RL7 part is unused and in its original packaging.
Return procedure for ADM6322C46ARJZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM6322C46ARJZ-RL7 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…
