LMX2470SLEX/NOPB
Active2.6-GHZ DELTA-SIGMA FRACTIONAL-N PLL WITH 800-MHZ INTEGER-N PLL
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LMX2470SLEX/NOPB
Active2.6-GHZ DELTA-SIGMA FRACTIONAL-N PLL WITH 800-MHZ INTEGER-N PLL
Technical Specifications
Parameters and characteristics for this part
| Specification | LMX2470SLEX/NOPB |
|---|---|
| Differential - Input:Output | Yes/No |
| Frequency - Max [Max] | 2.6 GHz |
| Input | CMOS |
| Mounting Type | Surface Mount |
| Number of Circuits | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output | CMOS |
| Package / Case | 24-UFQFN |
| PLL | Yes with Bypass |
| Ratio - Input:Output [custom] | 3:3 |
| Supplier Device Package | 24-ULGA |
| Supplier Device Package [x] | 4.5 |
| Supplier Device Package [y] | 3.5 |
| Type | PLL Frequency Synthesizer, Delta Sigma |
| Voltage - Supply [Max] | 2.75 V |
| Voltage - Supply [Min] | 2.25 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Bulk | 125 | $ 2.40 | |
| Cut Tape (CT) | 1 | $ 4.71 | ||
| 10 | $ 4.23 | |||
| 25 | $ 4.00 | |||
| 100 | $ 3.47 | |||
| 250 | $ 3.29 | |||
| 500 | $ 2.95 | |||
| 1000 | $ 2.49 | |||
| Digi-Reel® | 1 | $ 4.71 | ||
| 10 | $ 4.23 | |||
| 25 | $ 4.00 | |||
| 100 | $ 3.47 | |||
| 250 | $ 3.29 | |||
| 500 | $ 2.95 | |||
| 1000 | $ 2.49 | |||
| Tape & Reel (TR) | 2500 | $ 2.20 | ||
| Texas Instruments | LARGE T&R | 1 | $ 3.24 | |
| 100 | $ 2.64 | |||
| 250 | $ 2.08 | |||
| 1000 | $ 1.76 | |||
Description
General part information
LMX2470 Series
The LMX2470 is a low power, high performance delta-sigma fractional-N PLL with an auxiliary integer-N PLL. The device is fabricated using TI’s advanced BiCMOS process.
With delta-sigma architecture, fractional spur compensation is achieved with noise shaping capability of the delta-sigma modulator and the inherent low pass filtering of the PLL loop filter. Fractional spurs at lower frequencies are pushed to higher frequencies outside the loop bandwidth. Unlike analog compensation, the digital feedback techniques used in the LMX2470 are highly resistant to changes in temperature and variations in wafer processing. With delta-sigma architecture, the ability to push close in spur and phase noise energy to higher frequencies is a direct function of the modulator order. The higher the order, the more this energy can be spread to higher frequencies. The LMX2470 has a programmable modulator up to order four, which allows the designer to select the optimum modulator order to fit the phase noise, spur, and lock time requirements of the system.
Programming is fast and simple. Serial data is transferred into the LMX2470 via a three line MICROWIRE interface (Data, Clock, Load Enable). Nominal supply voltage is 2.5 V. The LMX2470 features a typical current consumption of 4.1 mA at 2.5 V. The LMX2470 is available in a 24 lead 3.5 X 4.5 X 0.6 mm package.
Documents
Technical documentation and resources
