LMX2522
- Small
Size
- Small 5.0 mm x 5.0 mm x 0.75 mm 28-Pin WQFN Package
- RF/GPS Synthesizer
System
- Integrated RF VCO
- Integrated GPS VCO
- Integrated Loop Filter
- Low Spurious, Low Phase Noise Fractional-N RF PLL Based on 11-bit Delta Sigma Modulator
- 10 kHz Frequency Resolution
- IF Synthesizer
System
- Integer-N IF PLL
- Programmable Charge Pump Current Levels
- Programmable Frequencies
- Supports Various Reference Oscillator
Frequencies
- 19.20/19.68 MHz
- Fast Lock Time: 500 µs
- Low
Current Consumption
- 17 mA at 2.8 V
- 2.7 V to 3.3 V Operation
- Digital Filtered Lock Detect Output
- Hardware and Software Power Down Control
All trademarks are the property of their respective owners.
LMX2522 and LMX2532 are highly integrated, high performance, low power frequency synthesizer systems optimized for Korean PCS (K-PCS) with GPS and Korean Cellular (K-Cellular) with GPS, CDMA (1xRTT, IS-95) mobile handsets. Using a proprietary digital phase locked loop technique, LMX2522 and LMX2532 generate very stable, low noise local oscillator signals for up and down conversion in wireless communications devices.
LMX2522 and LMX2532 include a RF voltage controlled oscillator (VCO), a GPS VCO, a loop filter, and a fractional-N RF PLL based on a delta sigma modulator. In concert these blocks form a closed loop RF and GPS synthesizer system. LMX2522 supports the Korean PCS band with GPS and LMX2532 supports the Korean Cellular band with GPS.
LMX2522 and LMX2532 include an Integer-N IF PLL also. For more flexible loop filter designs, the IF PLL includes a 4-level programmable charge pump. Together with an external VCO and loop filter, LMX2522 and LMX2532 make a complete closed loop IF synthesizer system.
Serial data is transferred to the device via a three-wire MICROWIRE interface (DATA, LE, CLK).
Operating supply voltage ranges from 2.7 V to 3.3 V. LMX2502 and LMX2512 feature low current consumption: 17 mA at 2.8 V.
LMX2522 and LMX2532 are available in a 28-pin WQFN package.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | LMX2522/LMX2532 PLLatinum Frequency Synthesizer System with Integrated VCOs データシート (Rev. B) | 2013/04/19 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
CODELOADER — CodeLoader Device Register Programming v4.19.0
The CodeLoader 4 software is used to program the LMX PLLs and LMK timing devices through either the USB or line print terminal (LPT) port of a computer. This software also provides information on how to program the device by showing the bits that are actually sent.
Which software do I use?
Product | (...) |
PLLATINUMSIM-SW — PLL ループ フィルタ、位相ノイズ、ロック時間、スプア シミュレーション ツール
PLLATINUMSIM-SW は、開発ユーザーが TI の各種 PLLatinum™ IC の詳細な設計とシミュレーションを行うためのシミュレーション ツールです。これらの IC は LMX シリーズのフェーズ ロック ループ (PLL) とシンセサイザを搭載しています。
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| WQFN (NJB) | 28 | Ultra Librarian |