Features (VS = 2.7V, TA = 25°C, RL = 1k to V+/2, AV = +1. Typical values unless specified). -3dB BW 55MHz Supply voltage range 2.5V to 12V Slew rate 22V/µs Supply current 650µA/channel Output short circuit current 42mA Linear output current ±20mA Input common mode voltage 0.3V beyond rails Output voltage swing 20mV from rails  Input voltage noise 17nV/ Input current noise 0.75pA/ Description The LMH™6645 (single) and LMH6646 (dual), rail-to-rail input and output voltage feedback amplifiers, offer high speed (55MHz), and low voltage operation (2.7V) in addition to micro-power shutdown capability (LMH6647, single). Input common mode voltage range exceeds either supply by 0.3V, enhancing ease of use in multitude of applications where previously only inferior devices could be used. Output voltage range extends to within 20mV of either supply rails, allowing wide dynamic range especially in low voltage applications. Even with low supply current of 650µA/amplifier, output current capability is kept at a respectable ±20mA 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 50µA. 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 (SOT23, MSOP-8, and SO-8) are further means to ease the adoption of these low power high speed devices in applications where board area is at a premium. Applications • Active filters • High speed portable devices • Multiplexing applications (LMH6647) • Current sense buffer • High speed transducer amp

LMH6645 Webench® Custom Design/Analyze/Build It Select Topology Active Filter Designer Inverting Amplifier AC-Coupled Inverting Amp NonInverting Amp Integrator Lowpass Filter Lowpass Filter 4th Order Highpass Filter Required Parameters Supply voltage: 5V 3.3V +/-5V +/-3.3V Other If "Other", Positive Supply is: V If "Other", Negative Supply is: V NOTE: 2.5 V <= Total Supply Voltage <= 12 V What is Webench? Also Recommended LMH6618▲ Higher 130 MHz Bandwidth With Rail To Rail Input And Output MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

	Connection Diagram *click for larger image *click for larger image
Typical Performance click for larger image

Datasheet

Title		Size	Date	Other Language
	LMH6645/46/47 2.7V, 650µA, 55MHz, Rail-to-Rail Input and Output Amplifiers with Shutdown Option	1088 Kbytes	15-Jun-05	日本語

Featured Application Notes

Title		Size	Date	Other Language
	AN-1255: Application Note 1255 An OrCAD PSPICE Library for the VIP10 High-Speed Op Amp	160 Kbytes	19-Nov-08	日本語 中文
	AN-1240: Application Note 1240 Video Transmission Over Twisted Pair Wire	59 Kbytes	24-Sep-02

More Application Notes

Title		Size	Date	Other Language
	AN-1255: Application Note 1255 An OrCAD PSPICE Library for the VIP10 High-Speed Op Amp	160 Kbytes	19-Nov-08	日本語 中文
	AN-1244: Application Note 1244 Photo-Diode Current-to-Voltage Converters	77 Kbytes	17-Sep-02
	AN-1240: Application Note 1240 Video Transmission Over Twisted Pair Wire	59 Kbytes	24-Sep-02

Design Tools

Title	Size	Date
"LMH730227/LMH730216/LMH730165 Single High Speed Op Amp Evaluation Boards (SOIC, SOT23, and SC70) (Chinese)"	371 Kbytes	6-Dec-2006
Amplifiers Selection Guide software for Windows
LMH Family Qualification Package	2791 Kbytes	3-Aug-2001
CLC730116 SOT23-6 Evaluation Board - Included with LMH6645MF Sample Order	93 Kbytes	22-Jun-01
"LMH730227/LMH730216/LMH730165 Single High Speed Op Amp Evaluation Boards (SOIC, SOT23, and SC70)"	6588 Kbytes	15-Dec-2008

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMH6645MA	VIP 10	0	12801	0	0	1155000	4	327734403
LMH6645MAX	VIP 10	0	12801	0	0	1155000	4	327734403
LMH6645MF	VIP 10	0	12801	0	0	1155000	4	327734403
LMH6645MFX	VIP 10	0	12801	0	0	1155000	4	327734403

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

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