LMH6645

正在供貨

單通道 2.7V 650μA 55MHz 軌到軌輸入和輸出放大器

可提供此產(chǎn)品的更新版本

功能優(yōu)于所比較器件的普遍直接替代產(chǎn)品
OPA863 正在供貨 單通道低功耗 110MHz 12V 軌到軌輸入和輸出電壓反饋放大器 Single-channel, higher bandwidth (50 MHz), lower noise (5.9 nV/√Hz), lower offset (1.3 mV), lower offset drift (3.5 μV/C) & lower power consumption (0.7 mA)
OPA863A 正在供貨 單通道、高精度、低功耗、105MHz、12V RRIO 電壓反饋放大器 Higher bandwidth (50 MHz), lower noise (5.9 nV/√Hz), lower offset (95 μV), lower offset drift (0.3 μV/°C) and lower power consumption (0.75 mA)

產(chǎn)品詳情

Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 40 BW at Acl (MHz) 55 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/μs) 22 Vn at flatband (typ) (nV√Hz) 17 Vn at 1 kHz (typ) (nV√Hz) 25 Iq per channel (typ) (mA) 0.725 Vos (offset voltage at 25°C) (max) (mV) 3 Rail-to-rail In, Out Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 84 Input bias current (max) (pA) 2000000 Offset drift (typ) (μV/°C) 5 Iout (typ) (mA) 20 2nd harmonic (dBc) 62 3rd harmonic (dBc) 72 Frequency of harmonic distortion measurement (MHz) 1
Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 40 BW at Acl (MHz) 55 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/μs) 22 Vn at flatband (typ) (nV√Hz) 17 Vn at 1 kHz (typ) (nV√Hz) 25 Iq per channel (typ) (mA) 0.725 Vos (offset voltage at 25°C) (max) (mV) 3 Rail-to-rail In, Out Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 84 Input bias current (max) (pA) 2000000 Offset drift (typ) (μV/°C) 5 Iout (typ) (mA) 20 2nd harmonic (dBc) 62 3rd harmonic (dBc) 72 Frequency of harmonic distortion measurement (MHz) 1
SOIC (D) 8 29.4 mm2 4.9 x 6 SOT-23 (DBV) 5 8.12 mm2 2.9 x 2.8
  • (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
  • (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.

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.
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類型 標題 下載最新的英語版本 日期
* 數(shù)據(jù)表 LMH664x 2.7 V, 650 uA, 55 MHz, Rail-to-Rail I/O Amplifiers w/Shutdown Option 數(shù)據(jù)表 (Rev. D) 2014年 11月 25日
電子書 The Signal e-book: 有關運算放大器設計主題的博客文章匯編 英語版 2018年 1月 31日
設計指南 High-Precision Reference Design for Buffering a DAC Signal 2017年 2月 3日
更多文獻資料 用于顯示屏的放大器 2013年 7月 8日
應用手冊 AN-1515 A Comprehensive Study of the Howland Current Pump (Rev. A) 2013年 4月 26日

設計和開發(fā)

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仿真模型

LMH6645 PSPICE Model

SNOM138.ZIP (2 KB) - PSpice Model
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計算工具

ANALOG-ENGINEER-CALC — 模擬工程師計算器

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除了可用作獨立工具之外，該計算器還能很好地與模擬工程師口袋參考中所述的概念配合使用。

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計算工具

VOLT-DIVIDER-CALC — Voltage divider calculation tool

The voltage divider calculation tool (VOLT-DIVIDER-CALC) quickly determines a set of resistors for a voltage divider. This KnowledgeBase JavaScript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. VOLT-DIVIDER-CALC can also be used to (...)
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借助?PSpice for TI 的設計和仿真環(huán)境及其內置的模型庫，您可對復雜的混合信號設計進行仿真。創(chuàng)建完整的終端設備設計和原型解決方案，然后再進行布局和制造，可縮短產(chǎn)品上市時間并降低開發(fā)成本。?

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用戶指南: PDF
英語版 (Rev.A): PDF
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封裝 引腳 CAD 符號、封裝和 3D 模型
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian

訂購和質量

包含信息：
  • RoHS
  • REACH
  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續(xù)可靠性監(jiān)測
包含信息：
  • 制造廠地點
  • 封裝廠地點

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