Apparatus for the mobile communication device in low power...

Details Apparatus for the mobile communication device in low power... Apparatus for the mobile communication device in low power...

2005-12-06

2005-12-06

Gesesse, Tilahun (Department: 2684)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S127500, C455S343500, C323S274000

Reexamination Certificate

active

06973337

ABSTRACT:
A mobile communications device (50) includes a plurality of LDOs (30) for supplying a stable voltage to various circuits on the device. In a normal mode, the LDO's main bandgap voltage source (12) supplies a voltage to a main amplifier (16). During deep sleep mode, sleep logic (40) places the LDOs in a sleeping state, where a low current sleep bandgap voltage source (32) supplies a voltage to a smaller, sleep amplifier (36), which maintains a charge on capacitors (24, 26) for a fast transitions to a full ON state.

REFERENCES:
patent: 6031362 (2000-02-01), Bradley
patent: 6236194 (2001-05-01), Manabe et al.
patent: 6441591 (2002-08-01), Nokkonen
patent: 6677735 (2004-01-01), Xi
patent: 6806690 (2004-10-01), Xi
patent: 0 686 903 (1995-12-01), None
patent: 1 361 664 (2003-11-01), None

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