The LTC?6602 is a dual, matched, programmable bandpass
or lowpass fi lter and differential driver. The selectivity of the
LTC6602, combined with its phase matching and dynamic
range, make it ideal for fi ltering in RFID systems. With two
degree phase matching between channels, the LTC6602 can
be used in applications requiring highly matched fi lters,
such as transceiver I and Q channels. Gain programmability,
and the fully differential inputs and outputs, simplify
implementation in most systems.
Both channels of the LTC6602 consist of a programmable
lowpass and highpass fi lter. For bandpass functionality,
the lowpass fi lters are programmed for the upper cutoff
frequency. For lowpass functionality, the highpass fi lters
can by bypassed. The fi lter cutoff frequencies can be set
with a guaranteed accuracy of 3% with the use of a single
resistor. Alternatively, the fi lter cutoff frequencies can be
controlled with an external clock.
The LTC6602 operates on a single 2.7V to 3.6V supply
and features a low power shutdown mode.