3.76-GHz wideband frequency synthesizer with integrated VCO
製品の詳細
パラメータ
パッケージ|ピン|サイズ
特長
- Output Frequency from 50 to 3760 MHz
- Input Clock Frequency up to 900 MHz
- Phase Detector Frequency up to 200 MHz
- Supports Fractional and Integer Modes
- –229 dBc/Hz Normalized PLL Phase Noise
- –120.8 dBc/Hz Normalized PLL 1/f Noise
- –137 dBc/Hz VCO Phase Noise @ 1 MHz
offset for a 2.5 GHz Carrier - 100 fs RMS Jitter in Integer Mode
- Programmable Fractional Modulator Order
- Programmable Fractional Denominator
- Programmable Output Power up to +12 dBm
- Programmable 32 Level Charge Pump Current
- Programmable Option to Use an External VCO
- Digital Lock Detect
- 3-Wire Serial Interface and Readback
- Single Supply Voltage from 3.15 V to 3.45 V
- Supports Logic Levels down to 1.6 V
概要
The LMX2581 is a low noise wideband frequency synthesizer that integrates a delta-sigma fractional N PLL, multiple core VCO, programmable output divider, and two differential output buffers. The VCO frequency range is from 1880 to 3760 MHz and can be sent directly to the output buffers or divided down by even values from 2 to 38. Each buffer is capable of output power from 3 to +12 dBm at 2700 MHz. Integrated low noise LDOs are used for superior noise immunity and consistent performance.
This synthesizer is a highly programmable device and it enables the user to optimize its performance. In fractional mode, the denominator and the modulator order are programmable and can be configured with dithering as well. The user also has the ability to directly specify a VCO core or entirely bypass the internal VCO. Finally, many convenient features are included such as power down, Fastlock, auto mute, and lock detection. All registers can be programmed through a simple 3 wire interface and a read back feature is also available.
The LMX2581 operates on a single 3.3 V supply and comes in a 32 pin 5.0 mm × 5.0 mm WQFN package.
技術資料
種類 | タイトル | 英語版のダウンロード | 日付 | |
---|---|---|---|---|
* | データシート | LMX2581 Wideband Frequency Synthesizer with Integrated VCO データシート (Rev. G) | 2014年 9月 5日 | |
ユーザー・ガイド | LMX2581EVM User's Guide (Rev. C) | 2013年 11月 25日 | ||
技術記事 | High-speed design: Why phase noise matters! | 2013年 8月 2日 |
設計と開発
追加の事項や他のリソースを参照するには、以下のタイトルをクリックすると、詳細ページを表示できます。ハードウェア開発
概要
The LMX2581 Wideband frequency synthesizer allows the generation of a broad range of frequencies with excellent phase noise. The LMX2581 Reference Board (LMX2581EVM) is designed to assist in the evaluation of the LMX2581 in a system, as well as serve as a reference design for the customer’s (...)
特長
- LED to indicate lock
- Accomidations for on board external VCO or external oscillator input
- Serial control through USB
概要
The TSW16DX370EVM is a reference design board used to evaluate the high performance receiver IF super-heterodyne subsystem solution including the following products from Texas Instruments:
- TRF37B32 dual down-converting mixer with integrated IF amplifier
- LMH6521 dual digitally controlled variable gain (...)
特長
- High linearity, low noise Superheterodyne sub-system reference design
- Wide RF input range and greater than 100MHz of IF bandwidth
- Quickly evaluate ADC performance through High Speed Data Converter Pro software
- Simple connection to TSW14J56EVM data capture card or direct connection to FMC based Xilinx (...)
ソフトウェア開発
特長
- 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, VCO, Input, Dividers, and Loop Filter
- Simulation of spurs including phase detector and fractional.
- Simulation of (...)
特長
- Program EVMs through the USB2ANY Interface Adaptor or onboard USB interface.
- Export programming configurations for use in end application.
Which software do I use?
Product | Loop (...) |
設計ツールとシミュレーション
リファレンス・デザイン
設計ファイル
-
download TIDA-00426 BOM.pdf (231KB) -
download TIDA-00426 Assembly Drawing .pdf (122KB) -
download TIDA-00426 PCB.pdf (3746KB) -
download TIDA-00426 CAD Files.zip (5011KB) -
download TIDA-00426 Gerber.zip (467KB)
設計ファイル
-
download TIDA-00360 BOM.pdf (70KB) -
download TIDA-00360 Assembly Drawing.pdf (101KB) -
download TIDA-00360 Fabrication Drawing.pdf (118KB) -
download TIDA-00360 PCB.pdf (1521KB) -
download TIDA-00360 CAD Files.zip (1758KB) -
download TIDA-00360 Gerber.zip (2383KB)
CAD/CAE シンボル
パッケージ | ピン数 | ダウンロード |
---|---|---|
WQFN (RTV) | 32 | オプションの表示 |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL rating/ リフローピーク温度
- MTBF/FIT の推定値
- 原材料組成
- 認定試験結果
- 継続的な信頼性モニタ試験結果
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