홈 증폭기 연산 증폭기 (op amps) 고속 연산 증폭기(GBW ≥ 50MHz)
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증폭기
연산 증폭기 (op amps)
고속 연산 증폭기(GBW ≥ 50MHz)

LMH6646

활성

듀얼 채널, 2.7V, 650µA, 55MHz 레일 투 레일 입력 및 출력 증폭기

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OPA2863A 활성 듀얼, 고정밀, 저전력, 105MHz, 12V RRIO 전압 피드백 증폭기 Higher bandwidth (50 MHz), lower noise (5.9 nV/√Hz), lower offset (95 µV), lower offset drift (0.4 µV/°C) and lower power consumption (0.75 mA)
OPA2863 활성 듀얼, 저전력, 110MHz, 12V, RRIO(레일 투 레일 입력 및 출력) 전압 피드백 증폭기 Higher bandwidth (50 MHz), lower noise (5.9 nV/√Hz), lower offset (1.3 mV), lower offset drift (3.5 µV/C) and lower power consumption (0.7 mA)

LMH6646

활성
지금 주문하기

제품 상세 정보

Architecture Voltage FB Number of channels 2 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) 0.65 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 2 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) 0.65 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
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • (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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* 데이터 시트 LMH664x 2.7 V, 650 uA, 55 MHz, Rail-to-Rail I/O Amplifiers w/Shutdown Option datasheet (Rev. D) PDF | HTML 2014. 11. 25
e북 The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 2017. 3. 28
설계 가이드 High-Precision Reference Design for Buffering a DAC Signal 2017. 2. 3
추가 자료 Amplifiers for Displays 2013. 7. 8
애플리케이션 노트 AN-1515 A Comprehensive Study of the Howland Current Pump (Rev. A) 2013. 4. 26
EVM User's guide LMH730036 Evaluation Board User’s Guide 2012. 5. 6

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시뮬레이션 모델

LMH6646 PSPICE Model

SNOM139.ZIP (1 KB) - PSpice 모델
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패키지 핀 CAD 기호, 풋프린트 및 3D 모델
VSSOP (DGK) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
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