1 Features
• Typical values unless otherwise noted
• Ultra low supply current; 20μA/amplifier
• Specified characteristics at 3V and 5V
• Rail-to-rail input common-mode voltage range
• Rail-to-rail output swing
– Within 10mV of rail, VS = 5V and RL = 25kΩ
• Low input current: 150fA
• Low input offset voltage: 0.25mV

2 Applications
• Battery-operated circuits
• Transducer interface circuits
• Portable-communication devices
• Medical applications
• Battery monitoring

3 Description
The LMC6462 and LMC6464 (LMC646x) are
micropower versions of the popular LMC6482 and
LMC6484, combining a rail-to-rail input and output
range with very low power consumption.
The LMC646x provide an input common-mode
voltage range that exceeds both rails. The rail-torail
output swing of the amplifiers, specified for
loads down to 25kΩ, provides maximum dynamic
signal range. This rail-to-rail performance of the
amplifiers, combined with a high voltage gain, makes
these device unique among rail-to-rail amplifiers. The
LMC646x are an excellent upgrade for circuits using
limited common-mode range amplifiers.
The LMC646x, with specifications at 3V and 5V, is
an excellent choice for low-voltage applications. A
quiescent power consumption of 60μW per amplifier
(at VS = 3V) can extend the useful life of batteryoperated
systems. The 150fA input current, low
offset voltage of 0.25mV, and 85dB CMRR maintain
accuracy in battery-powered systems.