Overview
The LMX2572RHAT from Texas Instruments is a 6.4-GHz low-power wideband RF synthesizer designed for high-performance and low-power consumption. This device can generate frequencies from 12.5 MHz to 6.4 GHz without the need for an internal doubler. It features excellent phase noise and PLL performance, making it suitable for a variety of applications requiring precise frequency synthesis.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 3.3 | 3.5 | V |
| Supply Current (ICC) | - | 75 | 86 | mA |
| Phase Noise at 100-kHz Offset | - | -106 | - | dBc/Hz |
| PLL Figure of Merit | - | -232 | - | dBc/Hz |
| OSCin Input Frequency | 5 | - | 250 | MHz |
| Multiplier Input Frequency | 10 | - | 40 | MHz |
| Phase Detector Frequency | 0.25 | - | 250 | MHz |
| Charge Pump Current | 625 | - | 6875 | µA |
| Junction Temperature | -40 | - | 125 | °C |
| Package Type | - | - | VQFN (40-pin) | - |
Key Features
- Output frequency range: 12.5 MHz to 6.4 GHz
- Low power consumption: 75 mA at 3.3-V supply
- Excellent phase noise: –106 dBc/Hz at 100-kHz offset with 6.4-GHz carrier
- PLL figure of merit: –232 dBc/Hz
- 32-Bit Fractional-N divider
- Support for JESD204B SYSREF with programmable delay
- Support for ramp and chirp functions
- Support for FSK direct digital modulation
- Two programmable output power level differential outputs
- Fast VCO calibration speed: < 20 µs
- Single 3-V to 3.5-V power supply
- Phase synchronization across multiple devices
Applications
- Test and measurement equipment
- Digital 2-way radios
- Low power radio communication systems
- Satellite communication
- Wireless microphones
- Proprietary wireless connectivity
- MIMO (Multiple-Input Multiple-Output) systems
- RADAR systems
- High-speed data converter clocking
Q & A
- What is the output frequency range of the LMX2572RHAT?
The output frequency range is from 12.5 MHz to 6.4 GHz. - What is the typical supply current of the LMX2572RHAT?
The typical supply current is 75 mA at a 3.3-V supply. - What is the phase noise performance of the LMX2572RHAT?
The phase noise is –106 dBc/Hz at a 100-kHz offset with a 6.4-GHz carrier. - Does the LMX2572RHAT support JESD204B SYSREF?
Yes, it supports JESD204B SYSREF with programmable delay. - What types of modulation does the LMX2572RHAT support?
The device supports FSK direct digital modulation. - How many programmable output power levels does the LMX2572RHAT have?
It has two programmable output power level differential outputs. - What is the calibration speed of the VCO in the LMX2572RHAT?
The VCO calibration speed is less than 20 µs. - Can the LMX2572RHAT synchronize output phases across multiple devices?
Yes, it can synchronize output phases across multiple devices. - What is the package type of the LMX2572RHAT?
The package type is VQFN (40-pin). - What are some of the key applications of the LMX2572RHAT?
Key applications include test and measurement equipment, digital 2-way radios, satellite communication, wireless microphones, and high-speed data converter clocking.
