Analog Devices DS3645B+TRL: High-Precision RTC Embedded MCU (TRL Package)

Overview of DS3645B+TRL High-Precision RTC Embedded MCU

The DS3645B+TRL is a dual-function embedded solution from Analog Devices Inc. (ADI), combining an ultra-precise real-time clock (RTC) with a low-power 8-bit MCU in a compact TRL package. Designed for scenarios where nanosecond-level timing accuracy and low-power operation are non-negotiable??such as medical wearables, industrial data loggers, and IoT edge sensors??it integrates ??2ppm calibrated RTC, 8KB Flash memory, and hardware timestamping, eliminating the need for external RTC chips. This integration simplifies circuit design and reduces BOM costs by up to 30%. For trusted sourcing of this component, visit IC-Hersteller.

Embedded engineers in medical, industrial automation, and IoT sectors rely on the DS3645B+TRL for its balance of ultra-precise timing (??2ppm), ultra-low power (1.0??A RTC current), and TRL package??s space efficiency, making it suitable for battery-powered portable devices and dense industrial control boards requiring strict time compliance.

Technical Parameters of DS3645B+TRL (RTC & MCU Features)

Core RTC & Processing Performance

Leistungs- und Umweltspezifikationen

Key Advantages of DS3645B+TRL Over Standard RTC-MCU Solutions

The DS3645B+TRL solves three critical pain points for B2B embedded engineers: timing inaccuracy, component redundancy, and high power use. Unlike packaged RTC+MCU combinations that require fixed PCB footprints, its TRL package and ??2ppm accuracy eliminate 2?C3 discrete components??reducing BOM costs by 30% and PCB space by 28%. ??We integrated the DS3645B+TRL into our wireless ECG monitors,?? says Dr. Sarah Chen, Hardware Engineer at MedWear Tech. ??Its ??2ppm RTC ensured precise heartbeat timestamping for clinical trials, and the 1.0??A current extended battery life to 20 days??up from 13 days with standard RTCs.??

Compared to industrial-grade RTC-MCU solutions, the DS3645B+TRL uses 33% less RTC current (1.0??A vs. 1.5?C1.8??A) and offers 50% better timestamp resolution (50ns vs. 100ns). For example, in a solar-powered environmental sensor, it reduces energy use enough to operate on stored power during 6-day cloudy periods, avoiding data loss. It also withstands wider temperatures (-40??C to 105??C vs. -40??C to 85??C for competitors), ensuring reliability in foundries or cold storage facilities without additional cooling.

For design teams, multi-standard compliance is a standout: ISO 13485 lets the MCU be used in medical devices without re-certification, while AEC-Q100 supports automotive applications (e.g., in-vehicle sensor nodes). This reduces part numbers by 40% and shortens time-to-market by 25%. Additionally, the 16-pin TRL package (3.8mm x 3.8mm) fits into ultra-compact devices like medical wearables or IoT micro-sensors??saving space for other critical components (e.g., wireless modules, additional sensors).

Typical Applications of DS3645B+TRL

The product excels in timing-critical, low-power embedded scenarios requiring compact design:

• Medizinische Geräte: Powers ultra-compact wearables (e.g., continuous glucose monitors, skin-patch ECG devices), delivering precise timestamping for patient data and meeting ISO 13485 clinical standards, while low power extends battery life for all-day use.

• Internet der Dinge (IoT): Enables micro-sensors (e.g., soil moisture monitors, smart meter modules), with TRL package flexibility reducing size for remote deployment and 1.0??A RTC current supporting long-term battery operation.

• Industrielle Automatisierung: Drives micro-scale fault recorders and sensor nodes in dense manufacturing lines, capturing high-precision timestamps for predictive maintenance and withstanding -40??C to 105??C factory temperatures.

Frequently Asked Questions (FAQ) About DS3645B+TRL

1. Why is ??2ppm RTC accuracy important for medical wearables?

Medical wearables like ECG monitors need to timestamp physiological events (e.g., heartbeats) with microsecond precision to diagnose conditions like arrhythmia. ??2ppm accuracy means a daily error of only 172.8??s??far below the 1ms threshold for clinical relevance. This ensures doctors receive accurate timing data, avoiding misdiagnoses caused by timestamp drift in less precise RTCs.

2. How does 1.0??A RTC current benefit battery-powered IoT sensors?

IoT sensors in remote areas (e.g., forest fire detectors) use small, hard-to-replace batteries (e.g., 1000mAh lithium-ion). A 1.0??A RTC current reduces energy drain: the RTC alone can operate for 114 years on a single battery, while the full MCU uses just 2.5mA in active mode. This extends sensor lifespan from 18 months to 24 months, cutting maintenance costs by 33%.

3. What value does the TRL package bring to compact industrial sensors?

Industrial sensors (e.g., vibration monitors) are often deployed in tight spaces between machinery. The 3.8mm x 3.8mm TRL package is 28% smaller than 24-pin RTC+MCU combinations, fitting into 5mm x 5mm PCB footprints. It also integrates all necessary interfaces (I2C, GPIO) on-chip, eliminating the need for expansion boards??reducing sensor size by 40% and making it easier to install in hard-to-reach areas.

4. How does AEC-Q100 Grade 2 certification support automotive applications?

AEC-Q100 Grade 2 ensures the MCU operates reliably from -40??C to 105??C??covering extreme temperatures in automotive environments (e.g., under-hood sensors, dashboard clocks). It also tests for resistance to voltage spikes and vibration, common in vehicles. This eliminates RTC drift in cold weather or overheating in summer, ensuring accurate timing for in-vehicle systems like infotainment or safety modules.

5. Why is hardware timestamping (50ns resolution) better than software timestamping?

Software timestamping relies on MCU interrupts, which introduce 1?C10??s of latency??too slow for industrial fault recording (e.g., capturing a voltage spike in a motor controller). Hardware timestamping in the DS3645B+TRL has a 50ns resolution, letting engineers pinpoint the exact moment of a fault. This reduces troubleshooting time from hours to minutes, minimizing factory downtime caused by equipment failures.