LTC6905CS5#TRMPBF: High-Performance Programmable Oscillator IC | Features & Applications
LTC6905CS5#TRMPBF: A High-Performance Programmable Oscillator IC by Analog Devices
The LTC6905CS5#TRMPBF is a precision programmable oscillator integrated circuit (IC) manufactured by Analog Devices Inc., a global leader in high-performance analog electronics. This advanced IC is engineered to deliver exceptional frequency generation capabilities in a compact, surface-mount package, making it an ideal solution for modern applications requiring flexible and reliable timing solutions. In this comprehensive guide, we explore its technical specifications, key benefits, and diverse applications to help you understand why this IC stands out in the competitive landscape of clock/timing components.
Product Overview: LTC6905CS5#TRMPBF
The LTC6905CS5#TRMPBF is part of Analog Devices' renowned lineup of Programmable Timers and Oscillators. As a silicon-based oscillator, it eliminates the need for external crystals or resonators, simplifying design while reducing BOM costs. Its TSOT-23-5 (SOT-23-5 Thin) package ensures minimal PCB footprint, catering to space-constrained applications like IoT devices and wearable technology.
Key Attributes:
- Type: Programmable Oscillator IC
- Manufacturer: Analog Devices Inc.
- Package: TSOT-23-5 (Surface Mount)
- Moisture Sensitivity Level (MSL): 1 (Unlimited Floor Life)
- RoHS Compliance: Yes
Detailed Technical Specifications
1. Frequency Generation
- Range: 17 MHz to 170 MHz
- Resolution: Programmable via a single resistor
- Stability: 0.5% typical frequency accuracy
2. Power Efficiency
- Supply Voltage: 2.7V to 5.5V (Wide operating range)
- Current Consumption: 14 mA typical at 170 MHz
- Low-Power Mode: Available for battery-sensitive applications
3. Environmental Robustness
- Operating Temperature: 0 C to +70 C (Commercial grade)
- Storage Temperature: -65 C to +150 C
4. Physical Dimensions
- Package Size: 2.8mm x 2.9mm x 1.1mm (TSOT-23-5)
- Weight: 8mg typical
Advanced Features
1. Resistor-Programmable Frequency
The LTC6905CS5#TRMPBF allows designers to set the output frequency by simply adjusting an external resistor value, offering unparalleled flexibility without complex programming interfaces.
2. Low Jitter Performance
With <1% cycle-to-cycle jitter, this IC ensures precise timing for sensitive applications like high-speed data converters and RF systems.
3. Start-Up Time
Ultra-fast <1ms start-up enables quick system initialization, critical for power-cycled devices.
Industry Applications
1. Telecommunications
Provides clock synchronization for:
- 5G infrastructure equipment
- Optical networking systems
- Software-defined radios
2. Industrial Automation
Used in:
- PLC timing circuits
- Motor control systems
- Precision sensor interfaces
3. Consumer Electronics
Ideal for:
- Smart home devices
- Wearable technology
- High-end audio/video equipment
4. Medical Devices
Ensures accurate timing in:
- Patient monitoring systems
- Diagnostic imaging equipment
- Portable medical instruments
Design Advantages
1. Simplified Circuit Design
Eliminates need for:
- External crystals
- Complex PLL circuits
- Multiple clock generators
2. Cost Efficiency
Reduces:
- BOM count
- PCB real estate requirements
- Assembly complexity
3. Reliability
Features:
- Robust silicon construction
- ESD protection
- Long-term availability from Analog Devices
Comparative Analysis
vs. Crystal Oscillators:
- 30% smaller footprint
- No aging effects
- Programmable vs. fixed frequency
vs. Competing Silicon Oscillators:
- Wider frequency range (17-170MHz vs. typical 1-125MHz)
- Lower jitter
- Analog Devices' proven reliability
Implementation Guide
1. Basic Connection Diagram
[Visual description of typical application circuit with:
- Power supply decoupling
- Frequency-setting resistor
- Output load considerations
2. Layout Recommendations
- Place decoupling capacitors within 2mm of V+ pin
- Minimize trace length to frequency-setting resistor
- Use ground plane for optimal noise immunity
Frequently Asked Questions
Q1: Can the LTC6905CS5#TRMPBF replace a crystal oscillator?
A: Yes, in most applications it provides superior flexibility without the mechanical limitations of crystals.
Q2: How is frequency programmed?
A: Through a single external resistor (RSET) using the formula: fOSC = 20MHz (10k /RSET).
Q3: What's the typical frequency stability?
A: 0.5% over temperature and supply variations, comparable to mid-range crystal oscillators.
Purchasing Information
The LTC6905CS5#TRMPBF is available through Analog Devices' authorized distributors:
- Sample quantities: Typically ship within 24 hours
- Production volumes: Available on standard lead times
- Packaging options: Tape and reel for automated assembly
Technical Support: Analog Devices provides comprehensive design resources including:
- SPICE models
- Evaluation boards
- Application notes
Conclusion
The LTC6905CS5#TRMPBF represents the pinnacle of programmable oscillator technology, combining Analog Devices' engineering excellence with practical design features. Its unique combination of wide frequency range, compact packaging, and resistor-based programmability makes it an exceptional choice for engineers developing next-generation electronic systems across telecommunications, industrial, consumer, and medical markets.
For designers seeking to optimize their clock generation architecture while reducing component count and improving reliability, the LTC6905CS5#TRMPBF delivers measurable advantages over traditional timing solutions. Its performance characteristics and design flexibility ensure it will remain relevant as electronic systems continue evolving toward higher integration and greater functionality.
To explore how this innovative IC can enhance your specific application, contact our technical sales team today for personalized consultation and sample requests.