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MAX1727 - GSM Cellular/PCN Handset RF Power Management IC

Description

The MAX1727 is a radio frequency (RF) power-management IC intended for Global Satellite Mobile (GSM) communication cellular and personal cellular network (PCN) handsets using a single lithium-ion (Li+) cell battery with inputs from +3.1V to +5.5V.

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MAX1727 19-1489; Rev 0; 12/00 GSM Cellular/PCN Handset RF Power Management IC General Description The MAX1727 is a radio frequency (RF) power-management IC intended for Global Satellite Mobile (GSM) communication cellular and personal cellular network (PCN) handsets using a single lithium-ion (Li+) cell battery with inputs from +3.1V to +5.5V. The IC contains four low-noise, low-dropout (LDO) linear regulators to provide all the supply voltage requirements for the RF portion of the handset, and two high-speed, wide-bandwidth op amps for the power amplifier (PA) power control loop. Each LDO has its own individual on/off control to maximize design flexibility. All LDOs are internally trimmed to a fixed output voltage and are optimized for low noise and high crosstalk isolation.
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