The MAX2510 is a highly integrated IF transceiver for digital
wireless applications. It operates from a +2.7V to +5.5V supply voltage and
features four operating modes for advanced system power management. Supply
current is reduced to 0.2µA in shutdown mode.
In a typical application, the receiver downconverts a high IF/RF (up to
600MHz) to a low IF (up to 30MHz) using a double-balanced mixer. Additional
functions included in the receiver section are an IF buffer that can drive an
off-chip filter, an on-chip limiting amplifier offering 90dB of
received-signal-strength indication (RSSI), and a robust differential limiter
output driver designed to directly drive a CMOS input. The transmitter section
upconverts I and Q baseband signals to an IF in the 100MHz to 600MHz range using
a quadrature modulator. The transmit output is easily matched to drive a SAW
filter with an adjustable output from 0dBm to -40dBm and excellent linearity.
The MAX2511 has features similar to the MAX2510, but upconverts a low IF with
an image-reject mixer. The MAX2511 downconverter also offers image rejection with a limiter/RSSI stage similar to that of the MAX2510.
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