LT6600-5 Datasheet | Linear Technology

LT6600-5 .. Very Low Noise, Differential Amplifier and 5MHz Lowpass Filter Features DESCRIPTION n Programmable Differential Gain via Two External Resistors n Adjustable Output mon Mode Voltage n Operates and Specified with 3V, 5V, ±5V Supplies n 0.5d B Ripple 4th Order Lowpass Filter with 5MHz Cutoff n 82d B S/N with 3V Supply and 2VP-P Output n Low Distortion, 2VP-P, 800Ω Load 1MHz: 93d Bc 2nd, 96d Bc 3rd n Fully Differential Inputs and Outputs n patible with Popular Differential Amplifier Pinouts n Available in an SO-8 Package APPLICATIONS n High Speed ADC Antialiasing and DAC Smoothing in Networking or Cellular Base Station Applications n High Speed Test and Measurement Equipment n Medical Imaging n Drop-in Replacement for Differential Amplifiers L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. The LT®6600-5 bines a fully differential amplifier with a 4th order 5MHz lowpass filter approximating a Chebyshev frequency response. Most differential amplifiers require many precision external ponents to tailor gain and bandwidth. In contrast, with the LT6600-5, two external resistors program differential gain, and the filter’s 5MHz cutoff frequency and passband ripple are internally set. The LT6600-5 also provides the necessary level shifting to set its output mon mode voltage to acmodate the reference voltage requirements of A/Ds. Using a proprietary internal architecture, the LT6600-5 integrates an antialiasing filter and a differential amplifier/driver without promising distortion or low noise performance. At unity gain the measured in band signal-to-noise ratio is an impressive 82d B. At higher gains the input referred noise decreases so the part can process smaller input differential signals without significantly degrading the output signal-to-noise ratio. The LT6600-5 also Features low voltage operation. The differential design provides...