My Inquiry
My Account
Analog Devices Inc. ADM8641T263ACBZ-R7
- Part No.:
- ADM8641T263ACBZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 6-WFBGA, WLCSP
- Datasheet:
-
ADM8641T263ACBZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,367
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM8641T263ACBZ-R7 from Analog Devices is an ultralow power voltage detector IC designed for precision supply monitoring in battery-constrained systems. It monitors VCC directly with a factory-trimmed 2.63 V threshold (±1.3% over −40°C to +85°C), consumes only 92 nA typical quiescent current, features open-drain output, and operates from 0.9 V to 5.5 V supply. It is used in portable equipment to trigger system reset or low-battery warning when VCC falls below threshold.
For engineers reviewing the ADM8641T263ACBZ-R7 datasheet, ADM8641T263ACBZ-R7 pinout, ADM8641T263ACBZ-R7 application, or ADM8641T263ACBZ-R7 equivalent, this page delivers verified specifications, functional context, package mapping, real-world use cases, and validated alternative options - all confirmed against Analog Devices' Rev. D datasheet and ordering guide.
Technical Context
The ADM8641T263ACBZ-R7 implements a precision bandgap-based voltage reference and comparator architecture with internal hysteresis (0.9% × VTH) to prevent chatter near threshold. Its VCC pin serves dual role as power input and monitored node, eliminating need for external sensing resistors.
It includes an active-low DIS input with 0.6 MΩ internal pull-up and on-chip debounce, enabling hardware-controlled output disable independent of VCC level. Propagation delay is tightly specified: 26 μs typical (VCC falling), 36 μs typical (VCC rising), with glitch immunity up to 23–35 μs depending on edge direction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Threshold | 2.63 V ±1.3% (−40°C to +85°C); enables accurate brown-out detection for 3.3 V rail monitoring |
| Quiescent Current | 92 nA typical; supports >10-year battery life in coin-cell-powered IoT sensors |
| Supply Range | 0.9 V to 5.5 V; guarantees valid OUT behavior down to sub-1 V, critical for ultra-low-power wake-up circuits |
| Propagation Delay | 26 μs typical (VCC falling); ensures fast response to supply collapse without false triggering |
| Output Type | Open-drain; allows wired-OR configuration and flexible pull-up to any compatible rail (e.g., I²C bus) |
| Hysteresis | 0.9% × VTH = 23.7 mV; prevents oscillation during slow-rising/falling supply transitions |
| Operating Temp | −40°C to +85°C; qualified for industrial and extended-temperature portable applications |
Pinout & Package
ADM8641T263ACBZ-R7 is housed in a 6-ball, 1.46 mm × 0.96 mm wafer-level chip-scale package (WLCSP, CB-6-17), RoHS-compliant and lead-free (Z suffix). All GND balls must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | VCC | Power input and monitored voltage node; requires 0.1 µF decoupling to GND |
| A2 | GND | Primary ground connection; must be connected to PCB ground plane |
| B1 | DNC | Do Not Connect - electrically isolated; no trace or pad should attach |
| B2 | GND | Secondary ground connection; improves thermal dissipation and noise immunity |
| C1 | DIS | Active-low disable input; internally pulled up to VCC (0.6 MΩ); drives OUT low when asserted |
| C2 | OUT | Open-drain output; sinks up to 6.5 mA at VCC > 4.25 V; requires external pull-up |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 92 nA typical - enables multi-year operation on CR2032 batteries in always-on monitoring nodes |
| Precision Threshold | 2.63 V ±1.3% over full temperature range - eliminates need for calibration in production test |
| Glitch Immunity | 23–35 μs input filtering - rejects short transients common in switching regulator outputs |
| DIS Input Debounce | On-chip RC filtering and noise rejection - removes need for external RC or firmware debouncing |
| UVLO Protection | Valid output guaranteed only above 0.9 V VCC - prevents undefined logic states during power ramp |
Applications
| Portable Power Management | Microprocessor Supervision |
|---|---|
Use Scenario: Monitoring 3.3 V system rail in handheld medical sensor to detect battery depletion before shutdown. IC Role / Device Role / Timing Role: Voltage detector asserting reset signal to microcontroller when VCC drops below 2.63 V. Use Value: Prevents data corruption by initiating controlled shutdown with 26 μs response time and no false triggers from supply ripple. |
Use Scenario: Ensuring reliable boot sequence in ARM Cortex-M0+ based asset tracker powered by Li-SOCl₂ cell. IC Role / Device Role / Timing Role: Reset supervisor holding processor in reset until VCC stabilizes above 2.63 V after cold start. Use Value: Guarantees clean startup with <92 nA quiescent draw during sleep, extending field lifetime beyond 15 years. |
| Energy Harvesting Node | Smart Meter Auxiliary Supply |
Use Scenario: Enabling wake-up of ultra-low-power MCU in solar-harvested environmental monitor when storage capacitor reaches operating voltage. IC Role / Device Role / Timing Role: Threshold detector triggering energy management controller once harvested voltage crosses 2.63 V. Use Value: Minimizes startup energy loss with sub-100 nA static current and direct VCC sensing - no divider losses. |
Use Scenario: Supervising auxiliary 3.3 V rail derived from mains transformer in Class 0.5 smart electricity meter. IC Role / Device Role / Timing Role: Brown-out detector asserting fault flag to metrology ASIC when AC-derived supply dips. Use Value: Maintains measurement integrity via ±1.3% threshold accuracy across −40°C to +85°C and immunity to 23 μs transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB26DPWR | 2.63 V threshold, 350 nA ICC, SOT-23-5 package, no DIS pin | Lacks disable input; larger footprint; higher current draw reduces battery life in long-term deployments | Choose if board space permits SOT-23 and DIS functionality is unnecessary |
| MAX6375XR26+T | 2.63 V threshold, 1.2 µA ICC, 5-pin SC70, no hysteresis adjustment | 13× higher quiescent current; fixed hysteresis; not suitable for >5-year battery operation | Acceptable only for line-powered or frequently recharged systems where ultra-low ICC is not critical |
Compared with TLV803EB26DPWR and MAX6375XR26+T, the ADM8641T263ACBZ-R7 uniquely combines 92 nA ICC, integrated DIS control, and WLCSP footprint - making it the only option capable of supporting decade-long battery life in space-constrained, feature-rich supervision designs.
Availability
ADM8641T263ACBZ-R7 is available at Aetrix Electronics and suitable for portable electronics, microprocessor reset supervision, and energy harvesting systems requiring stable component supply, long-lifecycle assurance, and consistent parametric performance.
Supply support for ADM8641T263ACBZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADM8641 series belongs to Analog Devices' precision supervisory IC product line, engineered specifically for ultralow-power voltage monitoring in battery-operated and energy-constrained applications - emphasizing accuracy, minimal ICC, and robust transient immunity.
FAQ
What is the exact voltage threshold and tolerance of the ADM8641T263ACBZ-R7?
The ADM8641T263ACBZ-R7 has a factory-trimmed detection threshold of 2.63 V, with guaranteed accuracy of ±1.3% over the full −40°C to +85°C operating temperature range. This specification is confirmed in Table 6 of the Rev. D datasheet and applies directly to the ADM8641T263ACBZ-R7 variant, not the broader ADM8641 family.
Does the ADM8641T263ACBZ-R7 require external components for basic operation?
No external components are required for core voltage detection functionality. A 0.1 µF ceramic decoupling capacitor between VCC and GND is recommended per the datasheet, but not mandatory for operation. The DIS pin has an internal 0.6 MΩ pull-up resistor, and the open-drain OUT requires only an external pull-up resistor - no additional passive or active circuitry is needed for standard use of ADM8641T263ACBZ-R7.
Can the ADM8641T263ACBZ-R7 monitor voltages below its 2.63 V threshold?
No - the ADM8641T263ACBZ-R7 monitors VCC directly and is factory-trimmed exclusively for 2.63 V detection. It cannot sense lower voltages like 0.5 V or 1.0 V; those thresholds are only available in the ADM8642 variant (e.g., ADM8642T100ACBZ-R7), which uses a separate VIN pin. Attempting to use ADM8641T263ACBZ-R7 for sub-threshold monitoring violates its specified operating conditions.
What is the maximum sink current supported by the ADM8641T263ACBZ-R7's OUT pin?
The ADM8641T263ACBZ-R7's open-drain OUT pin supports up to 6.5 mA sink current when VCC > 4.25 V, 6 mA at VCC > 2.5 V, and 4.6 mA at VCC > 1.2 V - all with VOUT_OL ≤ 0.4 V. At VCC = 0.9 V, it guarantees 0.9 mA sink capability. These values are measured and specified in the "OUT PIN OUTPUT" section of the Rev. D datasheet for ADM8641T263ACBZ-R7.
Is the ADM8641T263ACBZ-R7 pin-compatible with other ADM8641 variants?
Yes - all ADM8641 variants, including ADM8641T263ACBZ-R7, share identical 6-ball WLCSP (CB-6-17) pinout and footprint per Figure 3 and Table 4 of the datasheet. Pin assignments (VCC, GND×2, DNC, DIS, OUT) and ball layout are invariant across threshold options and temperature grades within the ADM8641 family.
ADM8641T263ACBZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-WFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLCSP (0.96x1.46)
ADM8641T263ACBZ-R7 FAQ
1.How can I place an order for ADM8641T263ACBZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM8641T263ACBZ-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 ADM8641T263ACBZ-R7 reliable?
The price and inventory of ADM8641T263ACBZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM8641T263ACBZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM8641T263ACBZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM8641T263ACBZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM8641T263ACBZ-R7?
ADM8641T263ACBZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM8641T263ACBZ-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 ADM8641T263ACBZ-R7?
For technical support, including ADM8641T263ACBZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM8641T263ACBZ-R7 requirements.
6.How does Aetrix verify that ADM8641T263ACBZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM8641T263ACBZ-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 ADM8641T263ACBZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM8641T263ACBZ-R7?
All ADM8641T263ACBZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM8641T263ACBZ-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 ADM8641T263ACBZ-R7 part is unused and in its original packaging.
Return procedure for ADM8641T263ACBZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM8641T263ACBZ-R7 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…
