The MAX2361 dual-band, triple-mode complete transmitter
for cellular phones represents an integrated and architecturally
advanced solution for this application. The
device takes a differential I/Q baseband input and converts
it up to IF through a quadrature modulator and IF
variable-gain amplifier (VGA). The signal is then routed to
an external bandpass filter and upconverted to RF
through an image-reject mixer and RF VGA. The signal is
further amplified with an on-chip PA driver. An IF synthesizer,
an RF synthesizer, a local oscillator (LO) buffer, and
a 3-wire programmable bus complete the basic functional
blocks of this IC. The MAX2363 supports single-band, single-
mode (PCS) operation. The MAX2365 supports single-
band cellular dual-mode operation.
The MAX2361 enables architectural flexibility because
of its two IF voltage-controlled oscillators (VCOs), two IF
ports, two RF LO input ports, and three PA driver output
ports. The devices allow the use of a single receive IF
frequency and split-band PCS filters for optimum out-ofband
noise performance. The low-noise PA drivers
allow up to three RF SAW filters to be eliminated. Select
a mode of operation by loading data on the
SPI™/QSPI™/MICROWIRE™-compatible 3-wire serial
bus. Charge-pump current, IF/RF gain balancing,
standby, shutdown plus additional functions, are also
controlled with the serial interface.
The MAX2361/MAX2363/MAX2365 come in a 48-pin
TQFN-EP and QFN-EP package and are specified for
the extended (-40°C to +85°C) temperature range.
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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