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LTC6247 - 180MHz, 1mA Power Efficient Dual Rail-to-Rail I/O Op Amps

The LTC6246/LTC6247/LTC6248 are single/dual/quad low power, high speed unity gain stable rail-to-rail input/output operational amplifiers. On only 1mA of supply current they feature an impressive 180MHz gain-bandwidth product, 90V/μs slew rate and a low 4.2nV/√Hz of input-referred noise. The combination of high bandwidth, high slew rate, low power consumption and low broadband noise makes these amplifiers unique among rail-to-rail input/output op amps with similar supply currents. They are ideal for lower supply voltage high speed signal conditioning systems.

The LTC6246 family maintains high efficiency performance from supply voltage levels of 2.5V to 5.25V and is fully specified at supplies of 2.7V and 5.0V.

For applications that require power-down, the LTC6246 and the LTC6247 in MS10 offer a shutdown pin which disables the amplifier and reduces current consumption to 42μA.

The LTC6246 family can be used as a plug-in replacement for many commercially available op amps to reduce power or to improve input/output range and performance.

Features Gain Bandwidth Product: 180MHz –3dB Frequency (AV = 1): 120MHz Low Quiescent Current: 1mA Max High Slew Rate: 90V/μs Input Common Mode Range Includes Both Rails Output Swings Rail-to-Rail Low Broadband Voltage Noise: 4.2nV/√Hz Power-Down Mode: 42μA Fast Output Recovery Supply Voltage Range: 2.5V to 5.25V Input Offset Voltage: 0.5mV Max Input Bias Current: 100nA Large Output Current: 50mA CMRR: 110dB Open Loop Gain: 45V/mV Operating Temperature Range: –40°C to 125°C Single in 6-Pin TSOT-23 Dual in MS8, 2mm × 2mm Thin DFN,TS0T-23, MS10 Quad in MS16 Typical Application

Applications Low Voltage, High Frequency Signal Processing Driving A/D Converters Rail-to-Rail Buffer Amplifiers Active Filters Video Amplifiers Fast Current Sensing Amplifiers Battery Powered Equipment Packaging