Overview
The STuW81300TR, produced by STMicroelectronics, is a wideband RF/microwave PLL (Phase-Locked Loop) frequency synthesizer that integrates a dual architecture frequency synthesizer (Fractional-N and Integer-N). This device features four low phase noise VCOs (Voltage-Controlled Oscillators) with fast automatic center frequency calibration, providing a wide frequency range from 1.925 GHz to 16 GHz. The STuW81300TR is designed to optimize the size and cost of the final application by integrating low noise LDO (Low Drop-Out) voltage regulators and internally matched broadband RF outputs.
Key Specifications
| Specification | Value |
|---|---|
| Output Frequency Range | 1.925 GHz to 16 GHz |
| RF out 1 (VCO, VCO÷2) | 1.925-8.0 GHz |
| RF out 2 (VCO x 2) | 7.7-16.0 GHz |
| Normalized Phase Noise Floor | -227 dBc/Hz |
| VCO Phase Noise (6.0 GHz) | -131 dBc/Hz @ 1 MHz offset |
| Noise Floor (6.0 GHz) | -158 dBc/Hz |
| Phase Noise (12 GHz) | -125 dBc/Hz @ 1 MHz offset |
| Noise Floor (12 GHz) | -154 dBc/Hz |
| Maximum Phase Detector Frequency | 100 MHz |
| Differential Reference Clock Input | Up to 800 MHz (LVDS and LVECPL compliant) |
| Integrated Reference Crystal Oscillator Core | Yes |
| R/W SPI Interface | Yes |
| Logic Compatibility/Tolerance | 1.8 V/3.3 V |
| Supply Voltage | 3.0 V to 5.4 V |
| Package Type | VFQFPN36 6x6x1.0 mm |
| Process | BICMOS 0.25 µm SiGe |
Key Features
- Integrated VCOs with fast automatic center frequency calibration
- External VCO option with 5 V charge pump
- Fundamental VCO rejection at doubler output higher than 20 dB
- Internally broadband matched RF outputs delivering +6 dBm @6 GHz and +4 dBm @12 GHz single-ended
- Integrated low noise LDOs
- Output mute function and low power mode to trade current consumption with phase noise performance and/or output level
- Crystal oscillator core
- R/W SPI interface
- Logic compatibility/tolerance 1.8 V/3.3 V
Applications
- Infrastructure equipment
- Satellite communications for terrestrial applications
- Other wireless communication systems
Q & A
- What is the output frequency range of the STuW81300TR?
The output frequency range is from 1.925 GHz to 16 GHz. - What are the frequency ranges for RF out 1 and RF out 2?
RF out 1 (VCO, VCO÷2): 1.925-8.0 GHz, RF out 2 (VCO x 2): 7.7-16.0 GHz. - What is the normalized phase noise floor of the STuW81300TR?
The normalized phase noise floor is -227 dBc/Hz. - What is the phase noise at 6 GHz and 12 GHz?
At 6 GHz: -131 dBc/Hz @ 1 MHz offset, At 12 GHz: -125 dBc/Hz @ 1 MHz offset. - Does the STuW81300TR have an integrated reference crystal oscillator core?
Yes, it does. - What is the maximum phase detector frequency?
The maximum phase detector frequency is 100 MHz. - What is the supply voltage range for the STuW81300TR?
The supply voltage range is from 3.0 V to 5.4 V. - What package type does the STuW81300TR use?
The package type is VFQFPN36 6x6x1.0 mm. - What process is used in the STuW81300TR?
The process used is BICMOS 0.25 µm SiGe. - Does the STuW81300TR support SPI interface?
Yes, it supports R/W SPI interface.
