Overview
The LMX2582RHAR is a high-performance, wideband PLLatinum RF synthesizer produced by Texas Instruments. This device is designed to support a wide frequency range from 20 MHz to 5.5 GHz, making it suitable for various high-frequency applications. It features an integrated Voltage-Controlled Oscillator (VCO) and supports both fractional-N and integer-N modes, allowing for fine frequency selection with a 32-bit fractional divider. The LMX2582RHAR is known for its industry-leading phase noise performance and low jitter, making it an ideal low-noise source for high-performance systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Frequency Range | 20 MHz to 5.5 GHz | |
| VCO Phase Noise | –144.5 dBc/Hz at 1-MHz Offset for 1.8-GHz Output | |
| Normalized PLL Noise Floor | –231 dBc/Hz | |
| Normalized PLL Flicker Noise | –126 dBc/Hz | |
| RMS Jitter | 47 fs (12 kHz to 20 MHz) for 1.8 GHz Output | |
| Input Clock Frequency | Up to 1400 MHz | |
| Phase Detector Frequency | Up to 200 MHz, and Up to 400 MHz in Integer-N Mode | |
| Package Type | VQFN (RHA) with 40 pins | |
| Operating Temperature Range | –40°C to 85°C | °C |
| Power Supply Voltage | 3.15 V to 3.45 V | V |
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)
- Single Power Supply Operation: 3.3 V
- Fast Calibration Option (less than 25 µs)
Applications
- Test and Measurement Equipment
- Cellular Base-Station
- Microwave Backhaul
- High-Performance Clock Source for High-Speed Data Converters
- Software Defined Radio
Q & A
- What is the output frequency range of the LMX2582RHAR?
The output frequency range of the LMX2582RHAR is from 20 MHz to 5.5 GHz.
- What are the supported modes for the LMX2582RHAR?
The LMX2582RHAR supports both fractional-N and integer-N modes.
- What is the phase noise performance of the LMX2582RHAR?
The LMX2582RHAR features industry-leading phase noise performance with VCO phase noise of –144.5 dBc/Hz at 1-MHz offset for a 1.8-GHz output.
- What is the RMS jitter of the LMX2582RHAR for a 1.8 GHz output?
The RMS jitter is 47 fs (12 kHz to 20 MHz) for a 1.8 GHz output.
- What is the maximum input clock frequency for the LMX2582RHAR?
The maximum input clock frequency is up to 1400 MHz.
- What types of outputs does the LMX2582RHAR support?
The LMX2582RHAR supports dual differential outputs that can be configured as single-ended outputs.
- Does the LMX2582RHAR support programmable phase adjustment?
Yes, the LMX2582RHAR supports programmable phase adjustment.
- What is the power supply voltage range for the LMX2582RHAR?
The power supply voltage range is from 3.15 V to 3.45 V.
- What is the operating temperature range for the LMX2582RHAR?
The operating temperature range is from –40°C to 85°C.
- What are some common applications for the LMX2582RHAR?
Common applications include test and measurement equipment, cellular base-stations, microwave backhaul, high-performance clock sources for high-speed data converters, and software-defined radio.
