The LT®6604-10 consists of two matched, fully differential
amplifi ers, each with a 4th order, 10MHz lowpass fi lter. The
fi xed frequency lowpass fi lter approximates a Chebyshev
response. By integrating a fi lter and a differential amplifi
er, distortion and noise are made exceptionally low. At
unity gain, the measured in band signal-to-noise ratio is
an impressive 82dB. At higher gains, the input referred
noise decreases, allowing the part to process smaller
input differential signals without signifi cantly degrading
the signal-to-noise ratio.
Gain and phase are highly matched between the two channels.
Gain for each channel is independently programmed
using two external resistors. The LT6604-10 enables level
shifting by providing an adjustable output common mode
voltage, making it ideal for directly interfacing to ADCs.
The LT6604-10 is fully specifi ed for 3V operation. The
differential design enables outstanding performance at
a 2VP-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 fi lters.
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