LMH6646

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LMH6645, LMH6646, LMH6647 SNOS970D – JUNE 2001 – REVISED NOVEMBER 2014 LMH664x 2.7 V, 650 μA, 55 MHz, Rail-to-Rail Input and Output Amplifiers with Shutdown Option 1 Features 1 (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 2 Applications Active Filters High Speed Portable Devices Multiplexing Applications (LMH6647) Current Sense Buffer High Speed Transducer Amp 3 Description The LMH6645 (single) and LMH6646 (dual), rail-torail 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 hea...