LMH6645

現行

單通道 2.7V、650µA、55MHz 軌至軌輸入和輸出放大器

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OPA863 現行 單通道、低功耗、110-MHz、12-V、軌至軌輸入和輸出電壓回饋放大器 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)
最新 OPA863A 現行 單通道、高精密、低功耗、105-MHz、12-V 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)

產品詳細資料

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) 17 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) 17 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 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

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開發板

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模擬型號

LMH6645 PSPICE Model

SNOM138.ZIP (2 KB) - PSpice Model
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The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
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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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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian

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