LMH6643MAX Datasheet

3V, Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers


General Description
The LMH664X family true single supply voltage feedback amplifiers offer high speed (130MHz), low distortion (−62dBc), and exceptionally high output current (approximately 75mA) at low cost and with reduced power consumption when compared against existing devices with similar performance.
Input common mode voltage range extends to 0.5V below V− and 1V from V+. Output voltage range extends to within 40mV of either supply rail, allowing wide dynamic range especially desirable in low voltage applications. The output stage is capable of approximately 75mA in order to drive heavy loads. Fast output Slew Rate (130V/µs) ensures large peak-to-peak output swings can be maintained even at higher speeds, resulting in exceptional full power bandwidth of 40MHz with a 3V supply. These characteristics, along with low cost, are ideal features for a multitude of industrial and commercial applications.

(VS = ±5V, TA = 25˚C, RL = 2kΩ, AV = +1. Typical values unless specified).
■ −3dB BW (AV = +1) 130MHz
■ Supply voltage range 3V to 12.8V
■ Slew rate (Note 8), (AV = −1) 130V/µs
■ Supply current (no load) 2.7mA/amp
■ Output short circuit current +115mA/−145mA
■ Linear output current ±75mA
■ Input common mode volt. 0.5V beyond V−, 1V from V+
■ Output voltage swing 40mV from rails
■ Input voltage noise (100kHz) 17nV/√Hz
■ Input current noise (100kHz) 0.9pA/√Hz
■ THD (5MHz, RL = 2kΩ, VO = 2VPP, AV = +2) −62dBc
■ Settling time 68ns
■ Fully characterized for 3V, 5V, and ±5V
■ Overdrive recovery 100ns
■ Output short circuit protected (Note 11)
■ No output phase reversal with CMVR exceeded

■ Active filters
■ ADC buffer amp
■ Portable video
■ Current sense buffer



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