LT6604-2.5

he LT^®6604-2.5 consists of two matched, fully differential amplifi ers, each with a 4th order, 2.5MHz lowpass fi lter. The fi xed frequency lowpass fi lter approximates a Chebyshevresponse. By integrating a fi lter and a differential amplifier, distortion and noise are made exceptionally low. At unity gain, the measured in-band signal-to-noise ratio is an impressive 86dB. At higher gains, the input referrednoise decreases, allowing the part to process smallerinput differential signals without signifi cantly degrading the signal-to-noise ratio.

Gain and phase are well matched between the two channels. Gain for each channel is independently programmed using two external resistors. The LT6604-2.5 enables level shifting by providing an adjustable output common modevoltage, making it ideal for directly interfacing to ADCs.The LT6604-2.5 is fully specifi ed for 3V operation. Thedifferential design enables outstanding performance up to a 4VP-P signal level for a single 3V supply.

See the back page of this datasheet for a complete list of related single and dual differential amplifi ers with integrated 2.5MHz to 20MHz lowpass filters.