500MHz to 14GHz Wideband, Low Noise Fractional N PLL With Ramp/Chirp Generation
Product details
Parameters
Package | Pins | Size
Features
- –227 dBc/Hz Normalized PLL Noise
- 500 MHz – 14 GHz Wideband PLL
- 3.15 – 5.25 V Charge Pump PLL Supply
- Versatile Ramp / Chirp Generation
- 200 MHz Max Phase Detector Frequency
- FSK / PSK Modulation Pin
- Digital Lock Detect
- Single 3.3 V Supply Capability
- Automotive 125°C Q100 Grade 1 Qualification
- Non-Automotive (LMX2492) Option
Description
The LMX2492/92-Q1 is a low noise 14 GHz wideband delta-sigma fractional N PLL with ramp and chirp generation. It consists of a phase frequency detector, programmable charge pump, and high frequency input for the external VCO. The LMX2492/92-Q1 supports a broad and flexible class of ramping capabilities, including FSK, PSK, and configurable piecewise linear FM modulation profiles of up to 8 segments. It supports fine PLL resolution and fast ramp with up to a 200 MHz phase detector rate. The LMX2492/92-Q1 allows any of its registers to be read back. The LMX2492/92-Q1 can operate with a single 3.3 V supply. Moreover, supporting up to 5.25 V charge pump can eliminate the need of external amplifier, leading to a simpler solution with improved phase noise performance.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LMX2492/LMX2492-Q1 14 GHz Low Noise Fractional N PLL with Ramp/Chirp Generation datasheet (Rev. B) | May 28, 2015 |
User guide | LMX2492EVM Instructions User's Guide (Rev. E) | May 05, 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LMX2492EVM supports evaluation of the LMX2492 and LMX2492-Q1 which is an ultra-low noise 14 GHz wideband RF PLL with ramp/chirp generation, consisting of a delta-sigma fractional N PLL, phase detector, programmable 5V charge pump and high frequency divider for the VCO. The LMX2492 supports a (...)
Features
- -227 dBc/Hz Normalized PLL Noise in Fractional Mode
- 500 MHz to 14 GHz Wideband PLL
- 3.15V to 5.5V Charge Pump PLL Voltage
- Integrated FMCW Ramp / Chirp Generation
- FSK / PSK Modulation
- Excellent Ramp Linearity
- 200 MHz Maximum Phase Detector Frequency
- Integrated LDO for Digital Supply
- Frequency / Phase (...)
Software development
Features
- Part selection based on current, cost, phase noise and package
- Filter design up for passive and active filters up to 4th-order
- Simulation of phase noise including PLL, fractional engine, voltage-controlled oscillator (VCO), input, dividers, and loop filter
- Simulation of spurs including phase detector (...)
Features
- Program EVMs through the USB2ANY Interface Adaptor or onboard USB interface.
- Export programming configurations for use in end application.
Design tools & simulation
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WQFN (RTW) | 24 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.