DS1305+ Real-Time Clock IC: High-Precision Timekeeping & NVSRAM | Analog Devices
DS1305+ Real-Time Clock IC: Precision Timekeeping with NVSRAM by Analog Devices
The DS1305+ from Analog Devices Inc./Maxim Integrated is a cutting-edge Real-Time Clock (RTC) IC engineered for ultra-reliable timekeeping and non-volatile data storage. This 16-pin DIP component integrates advanced features like alarms, leap year compensation, and a trickle charger, making it a top choice for applications demanding accuracy and durability. Below, we delve into its specifications, benefits, and ideal use cases to help you leverage its full potential.
DS1305+ RTC: Technical Specifications & Features
1. Clock/Calendar Precision
The DS1305+ maintains seconds, minutes, hours, day, date, month, and year with automatic leap-year adjustment (valid until 2100). It supports:
- 12-hour (AM/PM) and 24-hour formats
- Accuracy: 2ppm (typical) with crystal oscillator
2. 96-Byte NVSRAM for Data Retention
The integrated Non-Volatile SRAM ensures critical data persists during power loss, eliminating the need for external EEPROM.
3. Programmable Alarm & Interrupt
Configure alarms to trigger system events or wake-up signals via the INT pin, ideal for IoT and battery-powered devices.
4. Trickle Charger for Backup Power
The built-in trickle charger maintains a super capacitor or rechargeable battery, ensuring uninterrupted operation during outages.
5. SPI Interface for Seamless Communication
The Serial Peripheral Interface (SPI) enables fast, noise-resistant communication with microcontrollers.
Electrical & Environmental Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 2V 5.5V (Main/Battery) |
| Timekeeping Current | 25.3 A (max @ 2V) |
| Operating Temperature | 0 C to +70 C |
| Package | 16-Pin DIP (7.62mm) |
Applications of DS1305+ RTC
- Industrial Automation: Event logging, PLC timing
- Medical Devices: Patient monitoring systems
- Consumer Electronics: Smart appliances, digital clocks
- Portable Devices: GPS trackers, wearables
Why Choose DS1305+ Over Competing RTCs?
The DS1305+ outperforms alternatives with:
- Lower power consumption vs. DS1302
- Integrated NVSRAM (unlike DS3231)
- SPI interface for faster data transfer than I C
Purchase & Support
Ready to integrate the DS1305+ into your design? Visit our store for datasheets, pricing, and technical support. For bulk orders, contact our sales team for exclusive discounts.
Conclusion
The DS1305+ combines high precision, robust NVSRAM, and low-power operation in a single package, making it a versatile solution for time-sensitive applications. Its SPI compatibility and alarm features further streamline integration into modern electronics. Whether for industrial, medical, or consumer use, the DS1305+ delivers unmatched reliability.
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