The MAX2395 fully monolithic quasi-direct modulator IC
is designed for use in WCDMA/UMTS transmitters. The
quasi-direct modulation architecture reduces system
cost, component count, and board space compared to
transmitters using an IF SAW filter with IF VCO and IF
synthesizer blocks.
The MAX2395 includes I/Q baseband filters, an IF I/Q
modulator with VGA, a fully monolithic VCO with PLL,
an upconverter mixer, an RF VGA, and a power amplifier
(PA) driver. The use of the quasi-direct modulator
scheme ensures 5% (typ) EVM and a 30dB (min) carrier
suppression. The RF VGA and IF VGA provide a
nominal 90dB of output power control. No external local
oscillators are required, enabling efficient implementation
of variable duplex offset systems.
The PLL is programmed by loading data on the SPI™/MICROWIRE™-compatible 3-wire serial bus. The IC
operates from a single +2.7V to +3.3V supply. The
devices are available in space-saving 28-pin QFN and
thin QFN exposed-pad packages (5mm x 5mm).
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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