現在提供此產品的更新版本
可直接投入的替代產品,相較於所比較的裝置,具備升級功能
LMH6646
- (VS = 2.7V, TA = 25°C, RL = 1kΩ to V+/2, AV = +1.
Typical Values Unless Specified. - −3dB BW 55 MHz
- Supply Voltage Range 2.5 V to 12 V
- Slew Rate 22 V/µs
- Supply Current 650 µA/channel
- Output Short Circuit Current 42 mA
- Linear Output Current ±20 mA
- Input Common Mode Voltage 0.3 V Beyond Rails
- Output Voltage Swing 20 mV from Rails
- Input Voltage Noise 17 nV/√Hz
- Input Current Noise 0.75 pA/√Hz
The LMH6645 (single) and LMH6646 (dual), rail-to-rail input and output voltage feedback amplifiers, offer high speed (55 MHz), and low voltage operation (2.7 V) in addition to micro-power shutdown capability (LMH6647, single).
Input common mode voltage range exceeds either supply by 0.3 V, enhancing ease of use in multitude of applications where previously only inferior devices could be used. Output voltage range extends to within 20 mV of either supply rails, allowing wide dynamic range especially in low voltage applications. Even with low supply current of 650 µA/amplifier, output current capability is kept at a respectable ±20 mA for driving heavier loads. Important device parameters such as BW, Slew Rate and output current are kept relatively independent of the operating supply voltage by a combination of process enhancements and design architecture.
In portable applications, the LMH6647 provides shutdown capability while keeping the turn-off current to less than 50 µA. Both turn-on and turn-off characteristics are well behaved with minimal output fluctuations during transitions. This allows the part to be used in power saving mode, as well as multiplexing applications. Miniature packages (SOT-23, VSSOP-8, and SOIC-8) are further means to ease the adoption of these low power high speed devices in applications where board area is at a premium.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | LMH664x 2.7 V, 650 uA, 55 MHz, Rail-to-Rail I/O Amplifiers w/Shutdown Option datasheet (Rev. D) | 2014年 11月 25日 | |
E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 2017年 3月 28日 | ||
Design guide | High-Precision Reference Design for Buffering a DAC Signal | 2017年 2月 3日 | ||
More literature | Amplifiers for Displays | 2013年 7月 8日 | ||
Application note | AN-1515 A Comprehensive Study of the Howland Current Pump (Rev. A) | 2013年 4月 26日 | ||
More literature | Die D/S LMH6646 MDC 2.7V, 650µa, 55Mhz, Rail-Rail Input/Output Amp W/ Shutdown | 2012年 9月 28日 | ||
EVM User's guide | LMH730036 Evaluation Board User’s Guide | 2012年 5月 6日 |
設計與開發
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Texas Instruments offers this unpopulated Evaluation Board to aid in the evaluation and testing of high-speed Op Amp that are offered in the 8-Pin MSOP package. Resistors, capacitors, or any other surface-mount components can be easily mounted on this board in the desired circuit configuration. The (...)
ANALOG-ENGINEER-CALC — 類比工程師計算機
VOLT-DIVIDER-CALC — Voltage divider calculation tool
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
SOIC (D) | 8 | Ultra Librarian |
VSSOP (DGK) | 8 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點