Texas Instruments LMX2571
The LMX2571 is a low-power, high-performance, wideband PLLatinum™ RF synthesizer that integrates a delta-sigma fractional N PLL, multiple core voltage-controlled oscillator (VCO), programmable output dividers and two output buffers. The VCO cores work up to 5.376 GHz resulting in continuous output frequency range of 10 MHz to 1344 MHz. This synthesizer can also be used with an external VCO.| Part No. | LMX2571 |
|---|---|
| Datasheet | LMX2571 Download |
| Manufacturer |  Texas Instruments |
| Description | RF Synthesizer |
| Buy | Stock & Price |
FEATURES
●1 Any Frequency from 10 MHz to 1344 MHz● Low Phase Noise and Spurs – –123 dBc/Hz at 12.5 kHz Offset at 480 MHz – –145 dBc/Hz at 1 MHz Offset at 480 MHz – Normalized PLL Noise Floor of –231 dBc/Hz – Spurious Better Than –75 dBc/Hz
● New FastLock to Reduce Lock Time
● A Novel Technique to Remove Integer Boundary Spurs
● Integrated 5-V Charge Pump and Output Divider for External VCO Operation
● 2-, 4- and 8-Level or Arbitrary Level Direct Digital FSK Modulation
● One TX/RX Output or Two Fanout Outputs
● Crystal, XO or Differential Reference Clock Input
● Low Current Consumption – 39-mA Typical Synthesizer Mode (Internal VCO) – 9-mA Typical PLL Mode (External VCO)
● 24-Bit Fractional-N Delta Sigma Modulator 2
APPLICATIONS
● Duplex Mode Digital Professional 2-Way Radio – dPMR, DMR, PDT, P25 Phase I● Low Power Radio Communication Systems – Satcom Modem – Wireless Microphone – Propriety Wireless Connectivity
● Handheld Test and Measurement Equipment 3
DESCRIPTION
To that end, a dedicated 5-V charge pump and an output divider are available for this configuration.
