Overview
The LMX2582RHAT from Texas Instruments is a high-performance, low-noise, wideband RF PLL (Phase-Locked Loop) with an integrated VCO (Voltage-Controlled Oscillator). This device supports a frequency range from 20 MHz to 5.5 GHz, making it suitable for a wide range of applications including wireless infrastructure, test and measurement equipment, and satellite communications. The LMX2582RHAT is designed to provide industry-leading phase noise performance, ensuring a clean signal for RF systems. It operates on a single 3.3-V power supply and is available in a compact 40-pin QFN package, ideal for space-constrained applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Frequency Range | 20 MHz to 5.5 GHz | MHz |
| VCO Phase Noise | –144.5 dBc/Hz at 1-MHz Offset for 1.8-GHz Output | dBc/Hz |
| Normalized PLL Noise Floor | –231 dBc/Hz | dBc/Hz |
| Normalized PLL Flicker Noise | –126 dBc/Hz | dBc/Hz |
| RMS Jitter | 47 fs (12 kHz to 20 MHz) for 1.8 GHz Output | fs |
| Input Clock Frequency | Up to 1400 MHz | MHz |
| Phase Detector Frequency | Up to 200 MHz, and Up to 400 MHz in Integer-N Mode | MHz |
| Power Supply Voltage | 3.3 V | V |
| Operating Temperature Range | –40°C to 85°C | °C |
| Package Type | 40-pin QFN |
Key Features
- Output Frequency Range from 20 MHz to 5.5 GHz
- Industry Leading Phase Noise Performance
- Supports Fractional-N and Integer-N Modes
- Dual Differential Outputs, configurable as single-ended outputs
- Innovative Solution to Reduce Spurs
- Programmable Phase Adjustment
- Programmable Charge Pump Current
- Programmable Output Power Level
- SPI or uWire (4-Wire Serial Interface) for control and programming
- Single Power Supply Operation: 3.3 V
- Low-Noise Digital Lock Detect
- Power-Down Modes for Power Savings
Applications
- Wireless Infrastructure
- Test and Measurement Equipment
- Satellite Communications
- Cellular Base-Station
- Microwave Backhaul
- High-Performance Clock Source for High-Speed Data Converters
- Software Defined Radio
- RF/IF and RFID Applications
Q & A
- What is the output frequency range of the LMX2582RHAT?
The output frequency range of the LMX2582RHAT is from 20 MHz to 5.5 GHz.
- What is the phase noise performance of the LMX2582RHAT?
The LMX2582RHAT has industry-leading phase noise performance, with VCO phase noise of –144.5 dBc/Hz at 1-MHz offset for a 1.8-GHz output.
- Does the LMX2582RHAT support both fractional-N and integer-N modes?
- What is the power supply voltage for the LMX2582RHAT?
The LMX2582RHAT operates on a single 3.3-V power supply.
- What type of package is the LMX2582RHAT available in?
The LMX2582RHAT is available in a 40-pin QFN package.
- Can the outputs of the LMX2582RHAT be configured independently?
- What is the operating temperature range of the LMX2582RHAT?
The operating temperature range of the LMX2582RHAT is from –40°C to 85°C.
- Does the LMX2582RHAT support fast frequency hopping?
- How is the LMX2582RHAT controlled and programmed?
The LMX2582RHAT can be controlled and programmed using an SPI or uWire (4-Wire Serial Interface).
- What are some of the key applications of the LMX2582RHAT?
The LMX2582RHAT is used in various applications including wireless infrastructure, test and measurement equipment, satellite communications, and software defined radio.
