LTC6246/LTC6247/LTC6248 180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps FEATURESDESCRIPTION n Gain Bandwidth Product: 180MHz The LTC®6246/LTC6247/LTC6248 are single/dual/quad low n –3dB Frequency (AV = 1): 120MHz power, high speed unity gain stable rail-to-rail input/output n Low Quiescent Current: 1mA Max operational amplifiers. On only 1mA of supply current they n High Slew Rate: 90V/µs feature an impressive 180MHz gain-bandwidth product, n Input Common Mode Range Includes Both Rails 90V/µs slew rate and a low 4.2nV/√Hz of input-referred n Output Swings Rail-to-Rail noise. The combination of high bandwidth, high slew rate, n
Low Broadband Voltage Noise: 4.2nV/√Hz low power consumption and low broadband noise makes n
Power-Down Mode: 42μA these amplifiers unique among rail-to-rail input/output op n
Fast Output Recovery amps with similar supply currents. They are ideal for lower n Supply Voltage Range: 2.5V to 5.25V supply voltage high speed signal conditioning systems. n Input Offset Voltage: 0.5mV Max n The LTC6246 family maintains high efficiency performance Input Bias Current: 100nA n from supply voltage levels of 2.5V to 5.25V and is fully Large Output Current: 50mA n specified at supplies of 2.7V and 5.0V. CMRR: 110dB n Open Loop Gain: 45V/mV For applications that require power-down, the LTC6246 and n Operating Temperature Range: –40°C to 125°C the LTC6247 in MS10 offer a shutdown pin which disables n Single in 6-Lead TSOT-23 the amplifier and reduces current consumption to 42µA. n Dual in MS8, 2mm × 2mm DFN,TS0T-23, MS10 The LTC6246 family can be used as a plug-in replacement n Quad in MS16 for many commercially available op amps to reduce power or to improve input/output range and performance. APPLICATIONS All registered trademarks and trademarks are the property of their respective owners. n Low Voltage, High Frequency Signal Processing n Driving A/D Converters n Rail-to-Rail Buffer Amplifiers n Active Filters n Video Amplifiers n Fast Current Sensing Amplifiers n Battery Powered Equipment TYPICAL APPLICATION350kHz FFT Driving ADC 0 Low Noise Low Distortion Gain = 2 ADC Driver f –10 IN = 350.195kHz fSAMP = 2.2Msps –20 SFDR = 82dB 3.3V 2.5V SNR = 70dB –30 1024 POINT FFT 3.3V VDD VREF –40 VIN + CS –50 SDO LTC6246 AIN LTC2366 –60 SCK – –70 499Ω OVDD MAGNITUDE (dB) GND 1% –80 624678 TA01a –90 499Ω 10pF –100 1% –110 0 200 400 600 800 1000 FREQUENCY (kHz) 624678 TA01b Rev C Document Feedback For more information www.analog.com 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Typical Applications Revision History Typical Application Related Parts
