LT6600-5

The LT^®6600-5 combines a fully differential amplifi er with a 4th order 5MHz lowpass fi lter approximating a Chebyshev frequency response. Most differential amplifi ers require many precision external components to tailor gain and bandwidth. In contrast, with the LT6600-5, two external resistors program differential gain, and the fi lter's 5MHz cutoff frequency and passband ripple are internally set. The LT6600-5 also provides the necessary level shifting to set its output common mode voltage to accommodate the reference voltage requirements of A/Ds.

Using a proprietary internal architecture, the LT6600-5 integrates an antialiasing fi lter and a differential amplifi er/driver without compromising distortion or low noise performance. At unity gain the measured in band signal- to-noise ratio is an impressive 82dB. At higher gains the input referred noise decreases so the part can process smaller input differential signals without signifi cantly degrading the output signal-to-noise ratio.

The LT6600-5 also features low voltage operation. The differential design provides outstanding performance for a 2V_P-P signal level while the part operates with a single 3V supply.

For similar devices with other cutoff frequencies, refer to the LT6600-20, LT6600-10 and LT6600-2.5.