Delta-Sigma Low Power Dual PLL for RF Personal Communications The LMX2485E is a delta-sigma fractional-N PLL (Phase-Locked Loop) manufactured by Texas Instruments (formerly National Semiconductor, NS).
### **Specifications:**
- **Frequency Range:**
- RF Input: Up to 6 GHz
- Output Frequency: Up to 6 GHz
- **Phase Detector Frequency:** Up to 100 MHz
- **Fractional-N Resolution:** 32 bits
- **Phase Noise Performance:**
- Low in-band phase noise
- Optimized for high-performance applications
- **Power Supply:** 3.3 V
- **Package:** 24-pin TSSOP
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
The LMX2485E is a high-performance delta-sigma fractional-N PLL designed for wireless communication systems, test equipment, and other RF applications. It provides excellent phase noise and spurious performance, making it suitable for demanding frequency synthesis applications.
### **Features:**
- **Delta-Sigma Fractional-N PLL:** Enables fine frequency resolution.
- **Integrated VCO (Voltage-Controlled Oscillator):** Supports frequencies up to 6 GHz.
- **Programmable Output Power:** Adjustable output level for different applications.
- **Low Power Consumption:** Optimized for power-sensitive designs.
- **Digital Lock Detect:** Provides indication of PLL lock status.
- **SPI Interface:** Allows easy configuration and control.
- **High Integration:** Reduces external component count.
This device is commonly used in base stations, microwave backhaul, and other high-frequency communication systems.
