Overview
The LMX2820RTCR is a high-performance, wideband RF synthesizer developed by Texas Instruments. This device is capable of generating frequencies in the range of 45 MHz to 22.6 GHz, making it highly versatile for various high-frequency applications. The LMX2820RTCR features a high-performance PLL with a figure of merit of –236 dBc/Hz and high phase detector frequency, which enables very low in-band noise and integrated jitter. It supports phase synchronization across multiple devices and includes features such as fast VCO calibration, low jitter, and high-frequency performance, making it ideal for applications requiring precise and reliable frequency generation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Frequency Range | 45 MHz to 22.6 GHz | |
| RMS Jitter (12 kHz – 95 MHz) at 6 GHz | 36 fs | |
| Figure of Merit | –236 dBc/Hz | |
| Phase Detector Frequency | Up to 2000 MHz | |
| Integer Mode Spurs (fPD=100 MHz) | –95 dBc | |
| VCO Calibration Time | 2.5 µs | |
| Supply Voltage | 3.15 to 3.45 V | V |
| Operating Temperature Range | –40 to 85 °C | °C |
| Package Type | VQFN (48 pins) | |
| Package Size | 7 mm x 7 mm |
Key Features
- Output frequency range of 45 MHz to 22.6 GHz
- High-performance PLL with low in-band noise and integrated jitter
- 36-fs rms jitter (12 kHz – 95 MHz) at 6 GHz
- Support for external VCO up to 22.6 GHz
- Synchronization of output phase across multiple devices
- Two differential RF outputs and one differential SYSREF output for JESD204B support
- Fast VCO calibration time of 2.5 µs
- Mute pin with 200-ns mute/unmute time
- Direct PFD input for offset mixing support
- Integrated LDOs eliminating the need for onboard low-noise LDOs
Applications
- Radar and electronic warfare systems
- 5G and mm-Wave wireless infrastructure
- Microwave backhaul systems
- Test and measurement equipment
- High-speed data converter clocking
- Point-to-point communication links
- Satellite communications
Q & A
- What is the output frequency range of the LMX2820RTCR?
The output frequency range of the LMX2820RTCR is from 45 MHz to 22.6 GHz.
- What is the RMS jitter of the LMX2820RTCR at 6 GHz?
The RMS jitter of the LMX2820RTCR at 6 GHz is 36 fs.
- Does the LMX2820RTCR support phase synchronization across multiple devices?
- What is the VCO calibration time of the LMX2820RTCR?
The VCO calibration time of the LMX2820RTCR is 2.5 µs.
- What is the supply voltage range for the LMX2820RTCR?
The supply voltage range for the LMX2820RTCR is from 3.15 V to 3.45 V.
- What type of package does the LMX2820RTCR come in?
The LMX2820RTCR comes in a VQFN package with 48 pins.
- What are some common applications of the LMX2820RTCR?
The LMX2820RTCR is commonly used in radar systems, 5G and mm-Wave wireless infrastructure, microwave backhaul, test and measurement equipment, and high-speed data converter clocking.
- Does the LMX2820RTCR support external VCOs?
- What is the operating temperature range of the LMX2820RTCR?
The operating temperature range of the LMX2820RTCR is from –40 °C to 85 °C.
- Does the LMX2820RTCR have integrated LDOs?
