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Analog Devices Inc. ADM1232ARMZ-REEL7
- Part No.:
- ADM1232ARMZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADM1232ARMZ-REEL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
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Product details
Overview
ADM1232ARMZ-REEL7 from Analog Devices is a 5 V microprocessor supervisory circuit in an 8-lead MSOP package, featuring adjustable voltage monitoring (4.5 V or 4.75 V trip), programmable strobe timeout (150 ms / 600 ms / 1.2 s), push-button reset with 20 ms debounce, −40°C to +85°C operation, and dual active-high/active-low RESET outputs. It ensures reliable power-on reset and watchdog supervision in embedded control systems.
For engineers reviewing the ADM1232ARMZ-REEL7 datasheet, ADM1232ARMZ-REEL7 pinout, ADM1232ARMZ-REEL7 application, or ADM1232ARMZ-REEL7 equivalent, key selection criteria include supply voltage tolerance configuration (TOLERANCE pin), STROBE timeout setting via TD pin, open-drain vs. push-pull RESET output drive capability, and thermal performance in MSOP (θJA = 206°C/W).
Technical Context
The ADM1232ARMZ-REEL7 integrates three core supervision functions: precision VCC monitor with selectable 5% or 10% tolerance, debounced manual reset input (PB RESET), and programmable watchdog timer triggered by STROBE activity. Its internal time-base generator sets reset timing without external components.
It uses a dedicated TD pin to configure strobe timeout period-0 V selects ~150 ms, floating selects ~600 ms, and VCC selects ~1.2 s-enabling flexible system-level watchdog behavior. The RESET output sources/sinks up to 10 mA, while RESET is open-drain requiring external pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.5 V (10% tolerance) or 4.75 V (5% tolerance); set by TOLERANCE pin connection to VCC or GND. |
| Strobe Timeout Options | 150 ms (TD = 0 V), 600 ms (TD = floating), or 1.2 s (TD = VCC); determines max allowed STROBE inactivity before reset. |
| RESET Active Time | 250–1000 ms; defines minimum duration of asserted reset pulse after trigger event. |
| Push-Button Reset Delay | 1–20 ms debounce; guarantees reset only if PB RESET held low ≥20 ms, ignoring transients <1 ms. |
| Operating Temperature | −40°C to +85°C; validated for industrial-grade reliability without derating. |
| Supply Current | 20–50 μA at CMOS logic levels; ultra-low quiescent current enables use in battery-backed systems. |
| Output Drive | RESET sources/sinks 8–10 mA; RESET is open-drain, requiring external pull-up for logic-high assertion. |
Pinout & Package
ADM1232ARMZ-REEL7 is housed in an 8-lead Mini Small Outline Package (MSOP, RM-8), measuring 3.0 mm × 3.0 mm × 0.85 mm, with exposed pad for thermal enhancement and RoHS-compliant finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | PB RESET | Debounced active-low manual reset input; requires ≥20 ms low pulse to guarantee reset assertion. |
| 2 | TD | Time delay select input; configures STROBE timeout period (0 V = 150 ms, floating = 600 ms, VCC = 1.2 s). |
| 3 | TOLERANCE | Voltage tolerance select; GND = 5% (4.75 V trip), VCC = 10% (4.5 V trip). |
| 4 | GND | Ground reference for all internal circuits and I/O pins. |
| 5 | RESET | Active-high push-pull reset output; drives high/low actively; supports 8–10 mA load. |
| 6 | RESET | Active-low open-drain reset output; requires external pull-up resistor for logic-high state. |
| 7 | STROBE | Watchdog input; monitors microprocessor activity; reset triggered if no high-to-low transition occurs within TD-set timeout. |
| 8 | VCC | 5 V power supply input; powers internal circuitry and defines reference for voltage monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Pin-compatible supervision IC | Direct replacement for MAX1232 and Dallas DS1232LP, enabling drop-in upgrade in legacy designs. |
| No external timing components | Internal oscillator eliminates need for external RC network, reducing BOM count and board space. |
| Dual-reset output topology | Simultaneous active-high (push-pull) and active-low (open-drain) RESET signals support diverse host interface requirements. |
| Configurable voltage threshold | Single-pin (TOLERANCE) selection between 4.5 V and 4.75 V trip points simplifies design across varying 5 V rail tolerances. |
| Industrial temperature range | Guaranteed operation from −40°C to +85°C supports deployment in harsh environments without thermal margining. |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Monitoring microcontroller operation in programmable logic controllers deployed in factory automation cabinets with wide ambient temperature swings. IC Role / Device Role / Timing Role: Supervisory circuit providing power-on reset, brownout detection, and watchdog timeout for main MCU. Use Value: Prevents erratic behavior during voltage sags or software lockups by asserting RESET within 50 μs of VCC falling below 4.75 V and holding it for ≥250 ms. |
Use Scenario: Ensuring safe startup and runtime integrity of body control units managing door locks, lighting, and HVAC in passenger vehicles. IC Role / Device Role / Timing Role: Dual-role supervisor: voltage monitor during ignition sequence and activity watchdog during CAN bus communication cycles. Use Value: STROBE input tied to MCU's periodic CAN transmit signal; timeout set to 600 ms ensures reset if communication halts due to firmware fault or bus error. |
| Medical Diagnostic Handhelds | Network Edge Routers |
Use Scenario: Maintaining deterministic boot sequence and runtime stability in portable ultrasound or glucose meter devices powered by Li-ion batteries. IC Role / Device Role / Timing Role: Power supervisor with low-current operation and precise 4.75 V trip point to avoid false resets during battery discharge. Use Value: Draws only 20–50 μA supply current, extending battery life; TOLERANCE pin grounded to fix 4.75 V threshold matching typical LDO regulation limits. |
Use Scenario: Securing reliable initialization and crash recovery of ARM-based control processors in enterprise-grade Ethernet switches. IC Role / Device Role / Timing Role: System-level watchdog and voltage supervisor interfacing with processor's nRST and WDI pins. Use Value: PB RESET pin connected to front-panel hardware reset button; internal 20 ms debounce eliminates mechanical contact bounce without external RC filter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1232ESA+ | Same 8-pin SOIC package; identical pinout and functional spec; slightly higher quiescent current (60 μA typ). | Validated in commercial-temp (0°C to +70°C) systems; lacks extended industrial temp rating. | Select when cost sensitivity outweighs extended temperature requirement and SOIC footprint is preferred over MSOP. |
| DS1232LPZ+ | Pin-compatible; same 5 V operation and strobe timeout options; lower RESET sink current (−6 mA vs −12 mA). | Optimized for low-power embedded systems; not rated for automotive qualification testing. | Choose for legacy designs already using Dallas parts where minimal layout change is critical and drive strength demand is ≤6 mA. |
Compared with MAX1232ESA+ and DS1232LPZ+, the ADM1232ARMZ-REEL7 offers guaranteed −40°C to +85°C operation, superior RESET drive (10 mA sourcing), and RoHS-compliant MSOP packaging-making it optimal for new industrial and automotive designs requiring long-term supply stability and thermal robustness.
Availability
ADM1232ARMZ-REEL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical handheld diagnostics, and network edge routers requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for ADM1232ARMZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers and manufacturing facilities worldwide.
The ADM1232 belongs to Analog Devices' microprocessor supervisory product line, engineered specifically for deterministic power sequencing, brownout protection, and watchdog supervision in resource-constrained embedded systems operating across industrial and automotive environments.
FAQ
What is the function of the TD pin on the ADM1232ARMZ-REEL7?
The TD pin on the ADM1232ARMZ-REEL7 selects the strobe timeout period: connecting TD to 0 V sets ~150 ms, leaving it floating sets ~600 ms, and connecting it to VCC sets ~1.2 s. This determines the maximum allowable interval between high-to-low transitions on the STROBE input before a reset is generated. The TD pin directly configures the internal time-base generator without external components.
How does the TOLERANCE pin affect the reset threshold voltage of the ADM1232ARMZ-REEL7?
The TOLERANCE pin on the ADM1232ARMZ-REEL7 sets the VCC trip point: grounding it selects a 5% tolerance (4.75 V nominal trip), while connecting it to VCC selects a 10% tolerance (4.5 V nominal trip). This configuration is hardwired at power-up and remains fixed until VCC cycles; it directly determines the voltage level below which the ADM1232ARMZ-REEL7 asserts RESET.
Can the ADM1232ARMZ-REEL7 be used with a 3.3 V microprocessor system?
No-the ADM1232ARMZ-REEL7 is specified only for 5 V operation (VCC = 4.5 V to 5.5 V) and has no 3.3 V compatible version. Its internal voltage reference, reset thresholds, and logic thresholds are calibrated for 5 V rails. Using it with a 3.3 V system would result in incorrect trip points and unreliable reset assertion; a dedicated 3.3 V supervisor like ADM1233 should be selected instead.
What is the difference between the RESET and RESET outputs on the ADM1232ARMZ-REEL7?
The RESET output of the ADM1232ARMZ-REEL7 is an active-high push-pull driver capable of sourcing and sinking up to 10 mA, while RESET is an active-low open-drain output that sinks current only and requires an external pull-up resistor. This dual-output architecture allows direct interface with both standard logic inputs and microcontrollers needing inverted reset polarity or wired-OR reset buses.
Is the ADM1232ARMZ-REEL7 RoHS compliant?
Yes-the "Z" suffix in ADM1232ARMZ-REEL7 explicitly denotes RoHS compliance per Analog Devices' ordering guide. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), and meets JEDEC J-STD-609A marking requirements for homogeneous material declarations.
ADM1232ARMZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 250ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ADM1232ARMZ-REEL7 FAQ
1.How can I place an order for ADM1232ARMZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1232ARMZ-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 ADM1232ARMZ-REEL7 reliable?
The price and inventory of ADM1232ARMZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1232ARMZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM1232ARMZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1232ARMZ-REEL7 transactions.
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4.How is shipping managed for ADM1232ARMZ-REEL7?
ADM1232ARMZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1232ARMZ-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 ADM1232ARMZ-REEL7?
For technical support, including ADM1232ARMZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1232ARMZ-REEL7 requirements.
6.How does Aetrix verify that ADM1232ARMZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM1232ARMZ-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 ADM1232ARMZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM1232ARMZ-REEL7?
All ADM1232ARMZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1232ARMZ-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 ADM1232ARMZ-REEL7 part is unused and in its original packaging.
Return procedure for ADM1232ARMZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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