LT6600-2.5 Datasheet | Linear Technology

LT6600-2.5 Very Low Noise, Differential Amplifier and 2.5MHz Lowpass Filter .. Features n n n n n n n n n DESCRIPTION The LT®6600-2.5 bines a fully differential amplifier with a 4th order 2.5MHz lowpass filter approximating a Chebyshev frequency response. Most differential amplifiers require many precision external ponents to tail or gain and bandwidth. In contrast, with the LT6600-2.5, two external resistors program differential gain, and the filter’s 2.5MHz cutoff frequency and passband ripple are internally set. The LT6600-2.5 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 LT6600-2.5 integrates an antialiasing filter and a differential amplifier/driver without promising distortion or low noise performance. At unity gain the measured in band signalto-noise ratio is an impressive 86d 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 LT6600-2.5 also Features low voltage operation. The differential design provides outstanding performance for a 4VP-P signal level while the part operates with a single 3V supply. The LT6600-2.5 is available in SO-8 and DFN-12 packages. For similar devices with higher cutoff frequency, refer to the LT6600-5, LT6600-10, LT6600-15 and LT6600-20 data sheets. ±0.6d B (Max) Ripple 4th Order Lowpass Filter with 2.5MHz Cutoff Programmable Differential Gain via Two External Resistors Adjustable Output mon Mode Voltage Operates and Specified with 3V, 5V, ±5V Supplies 86d B S/N with 3V Supply and 1VRMS Output Low Distortion, 1VRMS, 800Ω Load 1MHz: 95d Bc 2nd, 88d Bc 3rd Fully Differential Inputs and Outputs patible with Popular Differential Amplifier Pinouts SO-8 and DFN-12 Packages APPLICATIONS n n n n High Speed ADC Antialiasing and DAC Smoothing in...