LMH2190
- 1 Input Clock, 4 Output Clocks
- Supports both Square or Sine Wave Input
- 1.8V Square Wave Clock Outputs
- Skewed Clock Outputs
- Independent Clock Request
- High Isolation of Supply Noise to Clock Input
- High Output to Output Isolation
- Output Drive up to 50 pF
- EMI Controlled Output Edges and EMI Filtering
- Integrated 1.8V Low-Dropout Regulator
- Low Output Noise Voltage
- 10 mA load Current
- I2C Configurable up to 400 kHz (Fast Mode)
- Ultra Low Standby Current
- VBAT Range = 2.5V to 5.5V
All trademarks are the property of their respective owners.
The LMH2190 is a quad channel configurable clock tree driver which supplies a digital system clock to peripherals in mobile handsets or other applications. It provides a solution to clocking issues such as limited drive capability for fanout or longer traces, protection of the master clock from varying loads and frequency pulling effects, isolation buffering from noisy modules, and crosstalk isolation. It has very low phase noise which enables it to drive sensitive modules such as Wireless LAN and Bluetooth.
The LMH2190 can be clocked up to 27 MHz, and has an independent clock request pin for each clock output which allows the peripheral to control the clock. It features an integrated LDO which provides an ultra low noise voltage supply with 10 mA external load current which can be used to supply the TCXO or other clock source.
The I2C serial interface can be used to override the default configuration of the device to optimize the LMH2190 for the application. Some of these programmable features include setting the polarity of both the clock and the clock request inputs. In addition, the clock outputs have programmable output drive current to optimize for the connected load. EMI switching noise can be controlled by configuring output drive and skew settings.
The LMH2190 quad clock distributor is offered in a tiny 1.61mm x 1.61mm 16 bump DSBGA package. Its small size and low supply current make it ideal for portable applications.
技術資料
| 種類 | タイトル | 最新の英語版をダウンロード | 日付 | |||
|---|---|---|---|---|---|---|
| * | データシート | LMH2190 Quad Channel 27 MHz Clock Tree Driver with I 2 C Interface データシート (Rev. H) | 2013年 5月 2日 | |||
| EVM ユーザー ガイド (英語) | AN-1966 Evaluation Board for the LMH2190 (Rev. B) | 2013年 5月 1日 |
設計および開発
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。
LMH2190TMEVAL — LMH2190 評価ボード
The LMH2190EVAL board helps evaluating the LMH2190 Quad Channel 26 MHz Clock Tree Driver with I2C. It is designed such that it gives maximum flexibility in evaluating the LMH2190 in various configurations.
The LMH2190 provides a digital system clock to peripheral devices in mobile handsets. It (...)
PSPICE-FOR-TI — TI Design / シミュレーション・ツール向け PSpice®
設計とシミュレーション向けの環境である PSpice for TI (...)
| 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 |
|---|---|---|
| DSBGA (YFQ) | 16 | Ultra Librarian |
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 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用原材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点
推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。