The LMH6645MF is a 2.7V 650µA 55MHz Rail-to-rail input-output Amplifier with shutdown option. This amplifier offers high speed (55MHz) and low voltage operation (2.7V) in addition to micro-power shutdown capability. 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.
650µA/channel Supply current
42mA Output short-circuit current
±20mA Linear output current
Input common-mode voltage 0.3V beyond rails
Output voltage swing 20mV from rails
17nV/√Hz Input voltage noise
0.75pA/√Hz Input current noise
This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
