This is the Calypso chip, part of a GSM modem chipset.

For more information: https://osmocom.org/projects/baseband/wiki/TypicalCalypsoModemDesign

Thank you to blackbit for supplying the sample.

Package

(Logo)
D751749ZHH
82A2T1W $4
GI

Die

(Logo)
(M)2003 TI
F751749

(mirrored:)
(Logo) (M)TI 2002 CLEAD_R7